Aquatic BotanyPub Date : 2024-03-26DOI: 10.1016/j.aquabot.2024.103771
Laura Bossaer , Tim Sierens , Ludwig Triest
{"title":"Founder populations of Stuckenia pectinata in restored ponds originate from genetically diverse propagule pool: A case study of urban ponds in Brussels, Belgium","authors":"Laura Bossaer , Tim Sierens , Ludwig Triest","doi":"10.1016/j.aquabot.2024.103771","DOIUrl":"https://doi.org/10.1016/j.aquabot.2024.103771","url":null,"abstract":"<div><p>Eutrophication and cyanobacteria blooms are considered major problems for the biodiversity and water quality of urban ponds. While biomanipulation techniques such as drawdown with fish removal have great potential to restore turbid ponds to a clearwater status, it remains difficult to predict if and how macrophytes will recover naturally. Here, we used individual genotyping and population genetics based on 20 nuclear microsatellite loci to investigate the recruitment and recolonization strategies of the submerged macrophyte <em>Stuckenia pectinata</em> (L.) Börner. More specifically, we compared the founder genetic diversity of recovering populations just after biomanipulation to the genetic diversity of spontaneous, contiguous populations that settled over an extended period of time and were within the same catchment. Our results showed that turbid ponds may contain a persistent propagule bank that allows for an immediate re-establishment of genetically diverse populations of <em>S. pectinata</em> once a desired clearwater state is restored. Therefore, biomanipulation without sediment removal proved to be successful for founding populations to become immediately integrated with their established populations, thus maintaining the overall diversity of this species within local areas. Additionally, our results demonstrated an excess of heterozygotes in established populations that may be caused by substantial drift in albeit small effective population sizes of this predominantly outbreeding species.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103771"},"PeriodicalIF":1.8,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140328196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-03-24DOI: 10.1016/j.aquabot.2024.103774
Bradley T. Sartain , Nathan E. Harms , Andrew B. Coomes
{"title":"Influence of shade and cold stratification on germination success of vegetative propagules from multiple Butomus umbellatus genotypes","authors":"Bradley T. Sartain , Nathan E. Harms , Andrew B. Coomes","doi":"10.1016/j.aquabot.2024.103774","DOIUrl":"https://doi.org/10.1016/j.aquabot.2024.103774","url":null,"abstract":"<div><p>Three experimental trials were conducted to investigate the influence of shade and cold stratification on germination success of vegetative propagules from multiple <em>Butomus umbellatus</em> genotypes. Shade level did not significantly impact germination of propagules in trial 1 (p=0.16); however, significant differences (p<0.0001) in germination percentages at the conclusion of the study were detected between genotypes. Rhizome segments of the triploid genotype one (G1) had the highest mean germination (95±1%); whereas bulbils of the diploid genotypes three (G3), four (G4), and five (G5) germinated to 9±2%, 1±1%, and 15±2%, respectively. Trial 2 focused on bulbils from G3, G4, and G5 diploid plants that were stratified at 4℃ for 35d. Like Trial 1, shade level was not significant (p=0.19) relative to the overall germination of cold-stratified bulbils. However, cold-stratified bulbils exhibited a much higher mean germination (≥93%) for all three genotypes. In Trial 3, the cold stratification treatments were significant and positively correlated to overall germination for G4 (p=0.005, r=0.77) and G5 (p=0.002, r=0.82), but not G3 (p=0.22, r=0.40) bulbils. Germination time significantly differed between genotypes in all cold-stratification treatments except for the 0, 120, and 180-day treatments. These studies demonstrate that a high percentage of vegetative propagules produced by <em>B. umbellatus</em> are capable of successfully germinating under laboratory conditions, but some require extended periods of cold exposure. Given that a single diploid bulbil can produce thousands of bulbils within a growing season; long term management of this species will need to be focused towards limiting bulbil production.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103774"},"PeriodicalIF":1.8,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0304377024000263/pdfft?md5=921894129fe1f0bcb7f73f5d2a2169b4&pid=1-s2.0-S0304377024000263-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140296536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-03-20DOI: 10.1016/j.aquabot.2024.103772
Kylie Cherneskie , Daouda Njie , Lena Champlin , Darci Swenson Perger , Elizabeth Watson
{"title":"Drainage Influences Coastal Salt Marsh Productivity and Soil Biogeochemistry","authors":"Kylie Cherneskie , Daouda Njie , Lena Champlin , Darci Swenson Perger , Elizabeth Watson","doi":"10.1016/j.aquabot.2024.103772","DOIUrl":"10.1016/j.aquabot.2024.103772","url":null,"abstract":"<div><p>Coastal wetlands display ecohydrological zonation such that horizontal differences in plant zones are driven by soil aeration and varying groundwater levels. However, it is less clear how variable levels of drainage directly impact biotic and abiotic factors in coastal wetland ecosystems. To determine the impacts of drainage levels, simulated tides in mesocosms with varying degrees of drainage were created with <em>Spartina alterniflora</em> and <em>Salicornia pacifica,</em> the dominant coastal salt marsh plant species on the United States’ Atlantic and Pacific coasts respectively. We measured biomass production and photosynthesis as indicators of plant health, and we also measured soil and porewater characteristics to help interpret patterns of productivity. These measures included above and belowground biomass, porewater pH, salinity, ammonium concentration, sulfide concentration, soil redox potential, net ecosystem exchange, photosynthesis rate, respiration rate, and methane flux. We found the greatest plant production in soils with intermediate drainage levels, with production values that were 13.7% higher for <em>S. alterniflora</em> and 57.7% higher for <em>S. pacifica.</em> Understanding how drainage impacts plant species is important for predicting wetland resilience to sea level rise, as increasing water levels alter ecohydrological zonation.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103772"},"PeriodicalIF":1.8,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140269263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-03-18DOI: 10.1016/j.aquabot.2024.103773
Emily K. Griffin , Kaylie Anne Costa , Dylan Lukacsa , Justin Greenberg , Lauren M. Hall , Bradley T. Furman , Victoria M. Congdon , Trisha Green , Katherine Suchanec , John A. Bowden
{"title":"Nontargeted lipidomics of Florida seagrasses","authors":"Emily K. Griffin , Kaylie Anne Costa , Dylan Lukacsa , Justin Greenberg , Lauren M. Hall , Bradley T. Furman , Victoria M. Congdon , Trisha Green , Katherine Suchanec , John A. Bowden","doi":"10.1016/j.aquabot.2024.103773","DOIUrl":"10.1016/j.aquabot.2024.103773","url":null,"abstract":"<div><p>Seagrasses are one of the most productive foundation species in the world and are important for maintaining ecosystem homeostasis. However, seagrasses have experienced a global decline in areal extent, due in part to environmental stressors. Despite ongoing decline, little is known about the lipidome of most seagrass species. Generally, lipidome profiles closely align with phenotypic changes and can be used to evaluate the condition of an individual. In this study, a nontargeted lipidomics approach, utilizing high-performance liquid chromatography tandem mass spectrometry, was used to assess the lipidome of wild seagrasses in Florida. Overall, 399 individual lipid species, comprised of 33 lipid subclasses, were identified across all specimens. The lipid classes with the highest total concentration, accounting for 75% of total identified lipids in all seagrasses were: monogalactosyldiacylglycerols (MGDG), digalactosyldiacylglycerols (DGDG), and sulfoquinovosyl diacylglycerols (SQDG). Here, the lipidomic profiles of wild seagrasses were identified for the first time, a necessary step toward using lipodomics as a tool for prospective assessments of condition. Once regional and species-specific baselines have been mapped, lipodomic surveys could provide new insight into the effects of environmental stressors on seagrass condition and help to augment ongoing efforts to document and understand seagrass ecosystem status and trends.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103773"},"PeriodicalIF":1.8,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-02-24DOI: 10.1016/j.aquabot.2024.103762
Chiara Anglana, Fabrizio Barozzi, Piergiorgio Capaci, Danilo Migoni, Makarena Rojas, Francesco Paolo Fanizzi, Gian-Pietro Di Sansebastiano
{"title":"Characterization of three species of aquatic mosses in axenic culture for biomonitoring and biotechnological applications","authors":"Chiara Anglana, Fabrizio Barozzi, Piergiorgio Capaci, Danilo Migoni, Makarena Rojas, Francesco Paolo Fanizzi, Gian-Pietro Di Sansebastiano","doi":"10.1016/j.aquabot.2024.103762","DOIUrl":"10.1016/j.aquabot.2024.103762","url":null,"abstract":"<div><p>Bryophytes are known bioindicators and are also emerging as effective tools for bioremediation. <em>In vitro</em> culture of bryophytes is an important tool for the implementation of several research and industrial applications but it is a poorly explored technology. In this study, we characterize in sterile conditions three aquatic moss species largely used all over the world for decoration but poorly studied: <em>Leptodictyum riparium</em>, <em>Vesicularia montagnei</em> and <em>Taxiphyllum barbieri</em>. They share interesting morphological traits that suggest their use as natural biofilters. Results include protocols for the establishment of axenic <em>in vitro</em> cultures, different for the different species because of their sensitivity to treatments, on which the morphological characters of the three species were described. The sporophytic generation was observed in <em>L. riparium</em> and <em>V. montagnei</em> but not in <em>T. barbieri</em> that may be unable to develop the diploid generation. The effect of plant growth regulators on gametophyte fragments was described applying 6-benzylaminopurine as cytokinin and α-naphthalene acetic acid as auxin. The absorption of several trace elements was measured in a mixed solution simulating environmental pollution, evidencing specie specificity toward the different elements. The possible applications for these mosses are not only in the field of bioindication but also in bioremediation and environmental restoration. Our study produced widely applicable protocols and basic information for further applications.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103762"},"PeriodicalIF":1.8,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0304377024000147/pdfft?md5=c75d2a5e2fea6a25fbfc644dd0d33891&pid=1-s2.0-S0304377024000147-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140011312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-02-21DOI: 10.1016/j.aquabot.2024.103761
Raissa Tais Santos , Sara Sofia Medina Benavides , Daniel Maximo Correa Alcantara , Suzana Neves Moreira , Vali J. Pott , Arnildo Pott , Camila Aoki , Camila Silveira Souza
{"title":"High floral trait diversity of aquatic plants in the Pantanal reveals different pollination strategies","authors":"Raissa Tais Santos , Sara Sofia Medina Benavides , Daniel Maximo Correa Alcantara , Suzana Neves Moreira , Vali J. Pott , Arnildo Pott , Camila Aoki , Camila Silveira Souza","doi":"10.1016/j.aquabot.2024.103761","DOIUrl":"10.1016/j.aquabot.2024.103761","url":null,"abstract":"<div><p>This research brings novel information regarding the floral traits and pollinator groups of aquatic macrophytes. Classifying functional traits and pollinator groups contributes to understanding reproductive processes, community structuring, and ecosystem functioning. Based on an extensive survey of information on 524 species of aquatic macrophyte angiosperms from the Pantanal wetland, we classified the floral traits of these species to identify their potential group of pollinators and how these traits are distributed throughout the botanical families of aquatic plants. We classified their life forms, floral traits (flower type, color, and resource), and main pollinator groups. We also investigated trends, plotting the occurrence of species throughout the phylogeny of angiosperm families, and using a network of interactions, we verified how interactions with different groups of pollinators are distributed within species traits. As a result, the species of aquatic macrophytes in the Pantanal are well distributed within the phylogeny, indicating that they may be more related to ecological than phylogenetic factors. We found a high diversity of floral traits and pollinator groups, predominating white flowers, providing nectar as a resource, and bees as their primary pollinators. Although bees were the main group of pollinators, we also found abiotic interactions linked to the species richness in Poaceae and Cyperaceae, with pollination system mainly performed by wind. Our research represents a first step towards identifying key information gaps. Future studies should focus on understanding <em>in loco</em> traits to fill this gap, besides information on ecological interactions with potential pollinators and species phenology.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"193 ","pages":"Article 103761"},"PeriodicalIF":1.8,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Plasma membrane aquaporins function in moisture regulation during seed germination and leaf hydration in eelgrass","authors":"Ken-ichi Yanada, Kaho Kondo, Natsumi Ino, Yukiko Bando, Keita Kurokawa, Ichiro Tanaka, Hajime Shiota","doi":"10.1016/j.aquabot.2024.103760","DOIUrl":"10.1016/j.aquabot.2024.103760","url":null,"abstract":"<div><p>Eelgrass (<em>Zostera marina</em>) is a marine angiosperm distributed in shallow seas that has a unique mechanism for regulating water content. Water transfer across the plasma membrane is facilitated by aquaporins, which are membrane proteins. In this study, we investigated the physiological functions of plasma membrane intrinsic proteins (PIPs) in eelgrass. <em>ZoPIP1;1</em> and <em>ZoPIP2;1</em> in eelgrass leaves were amplified by RT-PCR. Both ZoPIPs localized to the plasma membrane, and only ZoPIP2;1 showed water permeability. <em>ZoPIP1;1</em> and <em>ZoPIP2;1</em> were expressed in all tissues except male flowers. <em>ZoPIP</em>s were expressed during seed and fruit development, and their expression levels were low in mature seeds and elevated in germinating seeds. Moisture content decreased in the later phases of seed development and increased during seed germination. These findings imply that ZoPIPs participate in water uptake during seed germination. In leaves, <em>ZoPIP</em> expression was upregulated by dehydration but downregulated by rehydration. Water reabsorption of leaves was inhibited by HgCl<sub>2</sub>, an inhibitor of aquaporins. These findings indicate that ZoPIPs are upregulated by dehydration during extremely low tides and promote water uptake when the tide turns. Therefore, eelgrass PIPs function in moisture regulation during growth, seed germination, and the flood-ebb tidal cycle in seawater.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"192 ","pages":"Article 103760"},"PeriodicalIF":1.8,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139924264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-01-26DOI: 10.1016/j.aquabot.2024.103759
Suleiman Dauda , Ejiroghene Ebelechukwu Uyovbisere , Abdullahi Bala Alhassan , Ramatu Idris Sha’aba , Ibrahim Madu Katsallah Gadzama , Maria Onma Onaji , Mathias Ahii Chia
{"title":"Allelopathic interactions between Lemna minor and Microcystis aeruginosa are influenced by the antimalarial drug lumefantrine","authors":"Suleiman Dauda , Ejiroghene Ebelechukwu Uyovbisere , Abdullahi Bala Alhassan , Ramatu Idris Sha’aba , Ibrahim Madu Katsallah Gadzama , Maria Onma Onaji , Mathias Ahii Chia","doi":"10.1016/j.aquabot.2024.103759","DOIUrl":"10.1016/j.aquabot.2024.103759","url":null,"abstract":"<div><p>The aquatic macrophyte <span><em>Lemna minor</em></span><span> and cyanobacterium </span><span><em>Microcystis aeruginosa</em></span><span> coexist and alternate in freshwater ecosystems<span>, and nutrient changes, physical conditions, and micropollutants such as pharmaceuticals drive their succession. However, the effects of the antimalarial drug Lumefantrine on allelopathic interactions have not been previously investigated. This study investigated the effect of Lumefantrine on the allelopathic interactions between </span></span><em>L. minor</em> and <em>M. aeruginosa</em>. The drug adversely affected pigment levels at 1000 µg L<sup>-1</sup> on day one, while the highest levels were observed at the same concentration on days three and five in <em>M. aeruginosa</em> cultures. The intracellular hydrogen peroxide (H<sub>2</sub>O<sub>2</sub><span><span>) and lipid peroxidation (MDA) levels and </span>peroxidase<span> (POD) and glutathione S-transferase (GST) activity of </span></span><em>L. minor</em> and <em>M. aeruginosa</em><span> increased at varying degrees depending on the concentration of Lumefantrine. Increased concentrations of Lumefantrine induced higher microcystin content in </span><em>M. aeruginosa</em>. <em>L. minor</em> significantly decreased the growth and increased GST and POD activities of <em>M. aeruginosa</em> on day five of the assay. The introduction of Lumefantrine further altered these parameters when the species were co-cultured. Similarly, <em>M. aeruginosa</em> inhibited the growth of <em>L. minor</em>. The combination of <em>M. aeruginosa</em> and Lumefantrine increased GST activity compared with <em>M. aeruginosa</em> alone. Microcystin content was higher in co-cultures without Lumefantrine than in those exposed to the drug. These results show that allelopathic interactions between <em>L. minor</em> and <em>M. aeruginosa</em> are influenced by Lumefantrine and may have implications for managing freshwater ecosystems.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"192 ","pages":"Article 103759"},"PeriodicalIF":1.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139590045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquatic BotanyPub Date : 2024-01-24DOI: 10.1016/j.aquabot.2024.103758
Mike Jerauld , Jessica Vaccare , Forrest Dierberg , Nichole L. Carr , Janelle Potts , Thomas DeBusk
{"title":"Mercury concentrations in macrophytes, periphyton, and detritus in the Everglades, Florida, USA, with special attention to Utricularia species","authors":"Mike Jerauld , Jessica Vaccare , Forrest Dierberg , Nichole L. Carr , Janelle Potts , Thomas DeBusk","doi":"10.1016/j.aquabot.2024.103758","DOIUrl":"10.1016/j.aquabot.2024.103758","url":null,"abstract":"<div><p>Elevated mercury (Hg) levels in biota is one issue facing the Everglades ecosystem in south Florida, USA. Methylmercury (MeHg) is a concern in the environment because it bioaccumulates through the food web and can harm fauna and humans if ingested through contaminated food sources (e.g., fish). Total mercury (THg) and MeHg concentrations were measured in several common macrophyte species, periphyton, and detritus in the Everglades to investigate Hg concentrations spatially and among different ecosystem components. At each site, two species from the carnivorous genus <span><em>Utricularia</em></span>, <em>U. purpurea</em> and <em>U. foliosa</em>, which are widespread and abundant in Everglades sloughs, had much higher average tissue MeHg concentrations (2.4–81 ng/g dry weight [dw]) than all other sampled macrophytes (<1.5–7.5 ng/g dw), periphyton (0.4–6.2 ng/g dw), and detritus (<1.5–5.7 ng/g dw). The <em>Utricularia</em> species were likewise enriched with THg (14.6–115 ng/g dw) compared to the other macrophytes (2.6–27 ng/g dw), although slough detritus had the highest THg at most sites (24–182 ng/g dw). The <em>Utricularia</em> species generally had a higher average percent of THg as MeHg (8.2–75%) compared to the other macrophytes, periphyton, and detritus (0–32%). MeHg concentrations in <em>Utricularia</em> species were quite variable among sites with a spatial distribution that generally reflected historical Hg concentration patterns known in mosquitofish (<span><em>Gambusia holbrooki</em></span>). <em>Utricularia</em> species merit further investigation to understand how they accumulate relatively high MeHg concentrations and how they might influence Hg accumulation up the food web.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"192 ","pages":"Article 103758"},"PeriodicalIF":1.8,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139557843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling germination responses of three Mediterranean stem-succulent halophytes to salinity and temperature","authors":"Zaineb Hayder , Mansour Sekrafi , Abderrazak Tlili , Fayçal Boughalleb , Esmaeil Bakhshandeh , Raoudha Abdellaoui , Mohamed Tarhouni","doi":"10.1016/j.aquabot.2024.103757","DOIUrl":"10.1016/j.aquabot.2024.103757","url":null,"abstract":"<div><p><span>Population-based threshold models may aid in quantification of germination niches under stressful conditions such as salinity, temperature, and their interactions to understand seedling emergence patterns. Seeds of </span><span><em>Sarcocornia</em><em> fruticosa</em></span>, <em>Sarcocornia alpini</em>, and <span><em>Salicornia</em><em> emerici</em></span> were subjected to various temperatures at different NaCl concentrations. The median base NaCl concentration was roughly steady (0.68, 0.73, and 0.70 M, respectively) at sub-optimal temperatures, then decreased linearly at supra-optimal temperatures until the ceiling temperature. The estimated base, optimum and ceiling temperatures, in water, were –0.5, 15, and 29 °C for <span><em>Sarcocornia fruticosa</em></span>, –2.5, 11, and 24 °C for <em>Sarcocornia alpini</em>, and 9.5, 25, and 40 °C for <em>Salicornia emerici</em>, respectively. For all species, the base temperature did not change with the salinity, while both optimal and ceiling temperatures decreased. <em>S. emerici</em> showed rapid and synchronized germination when salinity decreased during the rainy season coinciding with favorable temperatures.</p></div>","PeriodicalId":8273,"journal":{"name":"Aquatic Botany","volume":"192 ","pages":"Article 103757"},"PeriodicalIF":1.8,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139506907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}