Journal of Phycology最新文献

筛选
英文 中文
Light stress regulates pigment concentrations, growth, and gene expression in hatchery-cultivated Kappaphycus alvarezii (Solieriaceae, Rhodophyta). 光胁迫对孵化场栽培木参色素浓度、生长和基因表达的影响。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-14 DOI: 10.1111/jpy.70148
April Mae Tabonda-Nabor, Bea A Crisostomo, Alexandros Armaos, Gabriel Schweizer, Arturo O Lluisma, Michael Y Roleda, Scott C Fahrenkrug
{"title":"Light stress regulates pigment concentrations, growth, and gene expression in hatchery-cultivated Kappaphycus alvarezii (Solieriaceae, Rhodophyta).","authors":"April Mae Tabonda-Nabor, Bea A Crisostomo, Alexandros Armaos, Gabriel Schweizer, Arturo O Lluisma, Michael Y Roleda, Scott C Fahrenkrug","doi":"10.1111/jpy.70148","DOIUrl":"10.1111/jpy.70148","url":null,"abstract":"<p><p>Kappaphycus alvarezii is a commercially valuable red seaweed cultivated for biomass and phycocolloid production. Enhancing its productivity, stress tolerance, and phycocolloid yield requires genetic diversification and optimized cultivation techniques. This study investigated the effects of different light intensities on growth, pigment composition, and gene expression in wild K. alvarezii to inform hatchery cultivation strategies. Eight wild-type strains were clonally cultivated under low, medium (control), and high light conditions for 28 days. High light resulted in the highest daily growth rate (6.03% ± 1.86%), whereas phycoerythrin (PE) levels were significantly higher under low light conditions. Gene expression analysis revealed that high light upregulated antioxidant-related genes (e.g., carotenoid-associated genes) and genes involved in DNA synthesis and repair, while repressing photosynthesis-related genes, likely as a protective response against oxidative stress. Low light reduced the expression of light-harvesting-related genes and intensified the expression of polysaccharide-degradation genes, potentially compromising carrageenan biosynthesis. Notably, the lectin KAA protein was highly induced under low light, suggesting a potential protective role against mannose-dependent pathogens. These results highlight the acclimative mechanisms of K. alvarezii under light stress and provide insights into metabolic regulation and energy allocation. Understanding these responses can help inform seaweed farmers about optimal cultivation depth and light exposure to maximize growth and enhance carrageenan yield, thereby contributing to sustainable aquaculture practices. Furthermore, transcriptome profiling identified key genes associated with carrageenan biosynthesis; together with the identification of light-regulated processes, these results provide candidate molecular targets for future genotype-based improvement and cultivation strategies aimed at enhancing carrageenan production.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"568-588"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147457353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Population and herbarium genomics provide a comprehensive framework for a revision of Microcoleus (Cyanobacteria). 种群和植物标本室基因组学为修订微藻(蓝藻)提供了一个全面的框架。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-18 DOI: 10.1111/jpy.70145
Svatopluk Skoupý, Aleksandar Stanojković, Jeffrey R Johansen, Dale A Casamatta, Callahan McGovern, Anne D Jungblut, Jutta Fastner, Petr Dvořák
{"title":"Population and herbarium genomics provide a comprehensive framework for a revision of Microcoleus (Cyanobacteria).","authors":"Svatopluk Skoupý, Aleksandar Stanojković, Jeffrey R Johansen, Dale A Casamatta, Callahan McGovern, Anne D Jungblut, Jutta Fastner, Petr Dvořák","doi":"10.1111/jpy.70145","DOIUrl":"10.1111/jpy.70145","url":null,"abstract":"<p><p>Microcoleus is a cosmopolitan, filamentous cyanobacterium and a key component of biological soil crusts-complex microbial communities essential for primary production in diverse terrestrial environments. Here, we performed a taxonomic revision of several species of Microcoleus based on a large population genomic dataset. The dataset was based on a Microcoleus speciation continuum characterized by variable levels of gene flow between the species. The putative species ranged from cryptic to distinctly morphologically defined lineages. We identify the type herbarium specimen and obtained a genome for the type species M. vaginatus and herein describe 10 novel species of Microcoleus. We provide epitypifications for the previously described species M. vaginatus and M. attenuatus. This research contributes to a more comprehensive understanding of terrestrial cyanobacterial biodiversity and cryptic species in cyanobacteria. It highlights the need for an extensive genomic and phenotypic dataset in the taxonomy of Cyanobacteria.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"454-476"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103696/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147474178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A clonal legacy? Reproductive mode variation in hard- and soft-bottom Gracilaria vermiculophylla populations. 克隆遗产?硬底和软底江蓠群体生殖方式的变异。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-19 DOI: 10.1111/jpy.70143
Alexis P Oetterer, Solenn Stoeckel, Will H Ryan, Stacy A Krueger-Hadfield
{"title":"A clonal legacy? Reproductive mode variation in hard- and soft-bottom Gracilaria vermiculophylla populations.","authors":"Alexis P Oetterer, Solenn Stoeckel, Will H Ryan, Stacy A Krueger-Hadfield","doi":"10.1111/jpy.70143","DOIUrl":"10.1111/jpy.70143","url":null,"abstract":"<p><p>The invasion of the red macroalga Gracilaria vermiculophylla provided an opportunity to investigate the influence of benthic habitats on the reproductive mode, population structure, and colonization dynamics in haploid-diploid life cycles. In hard-bottom habitats, we observed gametophytes and tetrasporophytes fixed by holdfasts to hard substrata, whereas in soft-bottom habitats, we observed free-living tetrasporophytes either drifting or anchored by tube-building polychaetes. We collected thalli from hard- and soft-bottom habitats along the Eastern Shore of Virginia and Maryland to investigate the role of substrate on life cycle and reproductive mode dynamics. We determined the phase and sex using observable reproductive structures and a sex-linked polymerase chain reaction (PCR) assay, followed by genotyping all thalli using nine microsatellite loci. Sexual reproduction prevailed in hard-bottom sites, whereas clonal (asexual) reproduction dominated soft-bottom sites, also accompanied by tetrasporophytic dominance. There was site-specific variation in selfing and clonal rates that were supported by observations of physiological stress and local extirpation, such as at Ape Hole Creek and Fowling Point, respectively. We observed evidence of isolation by distance and the structuring of genetic diversity by habitat type, then by site, and, finally, by year. Although broad patterns have been described across the extant range, we clarified population genetic patterns in hard- versus soft-bottom habitats with patterns not confounded by the invasion history comparing native and non-native thalli. These results have implications for the ongoing spread of this alga and contribute to our understanding of the population genetics of partially clonal taxa.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"427-453"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103712/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147481005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the phylogenetic position of the type species of the syndinean genus Amoebophrya and broad divergence of the A. ceratii complex. 揭示变形虫属模式种的系统发育位置和角蜂复合体的广泛分化。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-30 DOI: 10.1111/jpy.70160
Sunju Kim, Jiae Yoo, D Wayne Coats
{"title":"Unveiling the phylogenetic position of the type species of the syndinean genus Amoebophrya and broad divergence of the A. ceratii complex.","authors":"Sunju Kim, Jiae Yoo, D Wayne Coats","doi":"10.1111/jpy.70160","DOIUrl":"10.1111/jpy.70160","url":null,"abstract":"<p><p>The syndinean genus Amoebophrya comprises endoparasitic dinoflagellates that infect various marine protists. Since the description of the type species, A. sticholonchae, a parasite of the radiolarian Sticholonche zanclea, an additional six Amoebophrya species have been formally described. Over the past 2 decades, intensive high-throughput environmental sequencing has discovered widespread and extensive diversity of novel marine alveolate group II (MALV II), generally considered the Amoebophryidae. Of the large number of uncultured environmental sequences, only several clades of MALV II are associated with a few sequences representing the Amoebophrya ceratii complex (ACC) infecting free-living dinoflagellates. In this study, we examined developmental traits and molecular signatures of A. sticholonchae and nine members of the ACC infecting diverse dinoflagellates from Korean coastal waters. Molecular phylogeny inferred from 18S rRNA gene sequences revealed that A. sticholonchae clustered with radiolarian-associated sequences, forming a basal lineage to the ACC, which comprised eight distinct clades (ACC1-8). Developmental traits were phylogenetically structured. Of the eight clades, ACC1-4 infected host nuclei and lacked temporary polyploidy, except that cytoplasmic infection occurred in Karlodinium veneficum cells containing multiple parasites; ACC5 and ACC8 exhibited cytoplasmic infection with temporary polyploidy, except for Prorocentrum micans, showing a similar frequency of cytoplasmic and nuclear infections, and ACC6-7 showed nuclear infection accompanied by temporary polyploidy. In contrast, A. sticholonchae uniquely combined cytoplasmic infection with the absence of temporary polyploidy. Although complex, these results suggest that phylogenetic divergence of the ACC group is generally consistent with developmental stage-specific characteristics, which is potentially useful in future taxonomic classification of this diverse lineage.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"689-702"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103698/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147574374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photoacclimation of cryptophytes and diatoms to light variability in the Western Antarctic Peninsula. 南极半岛西部隐生植物和硅藻对光变率的光驯化。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-04-09 DOI: 10.1111/jpy.70158
Afonso Ferreira, Raul R Costa, Bruno Jesus, Ana C Brito, Savênia B Silveira, Vanda Brotas, Catarina V Guerreiro, Eduardo Resende Secchi, Carlos Rafael B Mendes
{"title":"Photoacclimation of cryptophytes and diatoms to light variability in the Western Antarctic Peninsula.","authors":"Afonso Ferreira, Raul R Costa, Bruno Jesus, Ana C Brito, Savênia B Silveira, Vanda Brotas, Catarina V Guerreiro, Eduardo Resende Secchi, Carlos Rafael B Mendes","doi":"10.1111/jpy.70158","DOIUrl":"10.1111/jpy.70158","url":null,"abstract":"<p><p>Meltwater stratification during austral summer along the rapidly warming Western Antarctic Peninsula (WAP) exposes coastal phytoplankton to sudden light shifts. Such variability is thought to modulate phytoplankton dynamics, yet the photoacclimation capacity of Antarctic phytoplankton, especially cryptophytes, remains unclear. We grew a pennate diatom (Fragilariopsis cylindrus), a centric diatom (Porosira glacialis), and a cryptophyte (Geminigera cryophila) in microcosms subjected to low (30 μmol photons · m<sup>-2</sup> · s<sup>-1</sup>), high (450 μmol photons · m<sup>-2</sup> · s<sup>-1</sup>), and very low (6 μmol photons · m<sup>-2</sup> · s<sup>-1</sup>) light over 24 days at 3°C, while monitoring cell growth, pigments, photo system II (PSII) quantum yield, and non-photochemical quenching (NPQ). All taxa maintained positive growth (0.12-0.25 · d<sup>-1</sup>) and rapidly adjusted pigment ratios after light shifts, demonstrating efficient photoacclimation. The small pennate diatom reached 10-fold higher cell densities than the centric diatom, although the latter accumulated more chlorophyll per cell and consumed twice as much inorganic nitrogen. Geminigera cryophila exhibited the most flexible short-term NPQ response, dissipating over 60% of excess energy during high light pulses, yet this flexibility did not translate into any apparent advantage in growth over both diatoms during the period of the experiment. Field data showed cryptophyte dominance in shallower, more stratified waters, whereas diatoms prevailed in more mixed waters. Our results show that all three species can acclimate to Antarctica's complex light regime over days to weeks, yet cryptophytes may have a competitive advantage under sustained high light at shorter timescales. As warming and glacial melting continue, potentially favoring smaller cells over large bloom-forming diatoms, it is crucial to understand how it will impact carbon export and trophic transfer.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"643-665"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103710/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147639080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differential transcriptomic and circadian regulation across giant kelp blades based on relative tissue age. 基于相对组织年龄的巨藻叶片转录组学和昼夜节律差异调节。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-02-21 DOI: 10.1111/jpy.70137
Mikaela I Chandra, Sergey V Nuzhdin, Andrew Y Gracey
{"title":"Differential transcriptomic and circadian regulation across giant kelp blades based on relative tissue age.","authors":"Mikaela I Chandra, Sergey V Nuzhdin, Andrew Y Gracey","doi":"10.1111/jpy.70137","DOIUrl":"10.1111/jpy.70137","url":null,"abstract":"<p><p>Kelps are ecologically and economically important organisms. Kelp biomass generates habitat structure and carbon flux and is increasingly harvested as a sustainable resource. Kelp blades grow through cell proliferation at the proximal meristem and erode from the distal end, resulting in a spatiotemporal map reflecting tissue development. Diel physiology, such as photosynthesis, respiration, and carbohydrate metabolism, changes across the growing blade, yet the interaction of the circadian clock with age / blade structure has not been explicitly tested. Here, we sampled the proximal and distal ends of giant kelp (Macrocystis pyrifera) blades over 48 h under constant lab conditions to compare differential transcriptomic and circadian regulation across the blade. Gene function was differentially enriched across the blade, with proliferative and protective pathways upregulated in the younger proximal tissue and carbon acquisition and metabolic pathways upregulated in older distal tissue. We identified candidate aging-related genes based on similarities to plant, animal, and fungal senescence-associated genes, which were enriched in the older, distal tissue. While ~13% of analyzed genes displayed consistent circadian regulation across the blade, ~2% displayed altered rhythmic parameters, with consistently lower amplitudes and longer periods in older distal tissue. This is evidence of variable circadian physiology across giant kelp anatomy. The interacting developmental and circadian influences on the giant kelp transcriptome evoked here are integral for understanding the coordination of physiology important to kelp growth and health.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"329-346"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146258043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polyketides and fatty acids: Decoding the polyketide and fatty acid synthases evolution in Amphidinium carterae (Dinophyceae). 聚酮和脂肪酸:解析甲藻类甲藻聚酮和脂肪酸合成酶的进化。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-14 DOI: 10.1111/jpy.70149
Armando Mendoza-Flores, Clara Elizabeth Galindo-Sánchez, Paulina Mejía-Ruíz, M Del Pilar Sánchez-Saavedra
{"title":"Polyketides and fatty acids: Decoding the polyketide and fatty acid synthases evolution in Amphidinium carterae (Dinophyceae).","authors":"Armando Mendoza-Flores, Clara Elizabeth Galindo-Sánchez, Paulina Mejía-Ruíz, M Del Pilar Sánchez-Saavedra","doi":"10.1111/jpy.70149","DOIUrl":"10.1111/jpy.70149","url":null,"abstract":"<p><p>Amphidinium carterae is a harmful bloom-forming dinoflagellate, a key source of polyketide metabolites-such as amphidinolides, amphidinols and amphidinins-and a producer of fatty acids. The biosynthesis of these compounds is mediated by polyketide synthases (PKSs) and fatty acid synthases (FASs). This study aimed to identify PKS and FAS genes present in the transcriptome of A. carterae and to understand the biosynthesis of polyketides and fatty acids, as well as the evolution of these secondary metabolites. A total of 24 transcripts encoding single-domain KS and seven multi-domain PKS transcripts were identified, including one with three KS domains and another comprising nine modules, the largest PKS reported in dinoflagellates to date. Phylogenetic analyses revealed a distinct clade separating single-domain and multi-domain PKSs in dinoflagellates, all of which resembled a type I PKSs. The modular architecture observed in A. carterae was like other dinoflagellates, suggesting a conserved domain structure likely shaped by gene duplication events. Seven transcripts were related to FASs; each transcript encoded an individual type II FAS, with a subcellular localization in the plastid. Gene duplication events appear to be a critical factor in the evolution of dinoflagellate PKSs. Furthermore, the similarity in multi-domain PKS architecture across different dinoflagellate species indicates that polyketide biosynthesis shares a common evolutionary origin within this group.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"400-411"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147457512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An updated classification of growth forms in non-geniculate coralline algae (Corallinophycidae, Rhodophyta). 非膝状珊瑚藻生长形式的最新分类(珊瑚藻科,红藻门)。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-12 DOI: 10.1111/jpy.70144
Gavin W Maneveldt, Juliet Brodie, Martha S Calderon, Guillermo Diaz-Pulido, Paul W Gabrielson, Aki Kato, Line Le Gall, Clio Maridakis, Patrick T Martone, Isabella Moro, Robert J Mrowicki, Wendy A Nelson, Viviana Peña, Fabio Rindi, Florence Rousseau, Tom Schils, Jakop Schwoerbel, Frederico T S Tâmega, Riccardo Trentin
{"title":"An updated classification of growth forms in non-geniculate coralline algae (Corallinophycidae, Rhodophyta).","authors":"Gavin W Maneveldt, Juliet Brodie, Martha S Calderon, Guillermo Diaz-Pulido, Paul W Gabrielson, Aki Kato, Line Le Gall, Clio Maridakis, Patrick T Martone, Isabella Moro, Robert J Mrowicki, Wendy A Nelson, Viviana Peña, Fabio Rindi, Florence Rousseau, Tom Schils, Jakop Schwoerbel, Frederico T S Tâmega, Riccardo Trentin","doi":"10.1111/jpy.70144","DOIUrl":"10.1111/jpy.70144","url":null,"abstract":"<p><p>The current challenge of defining growth forms in the non-geniculate coralline red algae was addressed. Since the 19th century, those who have worked on this large and globally distributed group of algae have tried to summarize and systematically describe their growth forms. This effort resulted in a plethora of terms, which could sometimes be confusing, overlapping, and difficult to apply in the field. We reviewed the past literature to provide a coherent key to the non-geniculate coralline growth forms, incorporating the latest observations. Our revision expands the 10 currently recognized growth forms (unconsolidated, encrusting, warty, lumpy, fruticose, discoid, layered, foliose, ribbon-like, and arborescent) by redefining some of them, by reintroducing the columnar growth form, and by adding two new growth forms-convoluted and imbricate-to include recently documented specimens. This updated and refined tool better encompasses the diverse external morphologies of non-geniculate corallines. The goal was to facilitate taxonomic descriptions and to support ecological studies of non-geniculate corallines given the extreme difficulty of identifying species using only external characters.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"490-511"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147433787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative analysis of canonical and noncanonical rhodopsins in Amphidinium carterae and Karlodinium veneficum. 黄花水仙和黄花水仙典型与非典型视紫红质比较分析。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-07 DOI: 10.1111/jpy.70152
Jens Wira, Miranda Judd, Anne Baldino, Tsvetan Bachvaroff, Allen R Place
{"title":"Comparative analysis of canonical and noncanonical rhodopsins in Amphidinium carterae and Karlodinium veneficum.","authors":"Jens Wira, Miranda Judd, Anne Baldino, Tsvetan Bachvaroff, Allen R Place","doi":"10.1111/jpy.70152","DOIUrl":"10.1111/jpy.70152","url":null,"abstract":"<p><p>Rhodopsins are ancient and versatile light-sensitive proteins, widely distributed across microbial life. In dinoflagellates, however, their diversity and function remain poorly understood, owing to the lineage's extreme genomic divergence. Here, we surveyed the rhodopsin complements of two dinoflagellates, Amphidinium carterae and Karlodinium veneficum, using iterative profile-based searches, structural modeling, and motif-guided annotation. From the two species, 18 and 10 putative rhodopsin sequences were identified, respectively, with highly conserved retinal binding residues and a pocket. Of these sequences, several belonged to canonical families, including a finding of a heliorhodopsin in dinoflagellates. However, the majority were highly divergent sequences bearing noncanonical motifs and extensive accessory domains. The predicted ion-pumping capacities for both species were divergent based on helix C functional motifs, with K. veneficum rhodopsins maintaining canonical ion-pumping capacity, whereas A. carterae rhodopsins showed no functional similarity with canonical ion pumps. These results suggest functional innovation beyond ion-pumping, potentially toward signaling or light-dependent enzymatic activity in these two species.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"360-376"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147372951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temporal stability and spatial patterns of genetic diversity in populations of the climate-vulnerable fucoid Scytothalia dorycarpa. 气候易损性岩藻褐藻种群遗传多样性的时间稳定性和空间格局。
IF 3.4 3区 生物学
Journal of Phycology Pub Date : 2026-04-01 Epub Date: 2026-03-24 DOI: 10.1111/jpy.70156
Jane M Edgeloe, Melinda A Coleman, Georgina V Wood, Samuel Starko, Matt J Nimbs, Jacqueline Batley, Thomas Wernberg
{"title":"Temporal stability and spatial patterns of genetic diversity in populations of the climate-vulnerable fucoid Scytothalia dorycarpa.","authors":"Jane M Edgeloe, Melinda A Coleman, Georgina V Wood, Samuel Starko, Matt J Nimbs, Jacqueline Batley, Thomas Wernberg","doi":"10.1111/jpy.70156","DOIUrl":"10.1111/jpy.70156","url":null,"abstract":"<p><p>Climate change is driving the loss of genetic diversity, potentially limiting species' capacity to adapt to environmental change. Detecting changes in genetic diversity requires replicated temporal data, which is lacking for most species. Here, we combined contemporary and historical specimens of the climate-vulnerable fucoid Scytothalia dorycarpa to assess genetic diversity across ~2700 km of its geographic range. We analyzed four conserved organellar markers (rbcL, CO1, cox3, and trnW-1) using newly collected specimens and herbarium material to reconstruct past diversity. Scytothalia dorycarpa is endemic to Australia and has experienced climate-mediated declines over recent decades. We found stability in haplotype diversity over the 16-year sampling period, as well as across additional historical herbarium collections (1800s, 1883, 1960). We identified several common contemporary and historical haplotypes across the sampled range, but diversity patterns varied between markers. Nonetheless, consistent trends emerged for certain populations, with high, unique haplotype diversity consistently present across all markers and timepoints in the Cape Naturaliste-Leeuwin region (Western Australia). Notably, both contemporary and historical (now extinct) warm-edge populations had unique haplotypes that were absent elsewhere in the sampled range. These results demonstrate strong temporal stability in S. dorycarpa genetic diversity, with limited haplotype turnover, highlighting the resilience of sampled populations. The presence of unique haplotypes in specific populations underscores their role as reservoirs of evolutionary potential. By documenting long-term stability alongside localized diversity losses, this study provides a critical baseline for understanding the processes shaping genetic variation in S. dorycarpa and predicting its responses to future climate change.</p>","PeriodicalId":16831,"journal":{"name":"Journal of Phycology","volume":" ","pages":"715-731"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13103687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147504215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书