Botanical Journal of the Linnean Society最新文献_第9页

Atypical tracheid organization in proximal wood of late Palaeozoic Sigillaria approximata Fontaine et White (Lycopsida) 晚古生代方丹贝母近端木材中的非典型管胞组织

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-25 DOI: 10.1093/botlinnean/boad028

Michael P. D'Antonio

{"title":"Atypical tracheid organization in proximal wood of late Palaeozoic Sigillaria approximata Fontaine et White (Lycopsida)","authors":"Michael P. D'Antonio","doi":"10.1093/botlinnean/boad028","DOIUrl":"https://doi.org/10.1093/botlinnean/boad028","url":null,"abstract":"\u0000 It is thought that arborescent lycopsid cambial expansion kept pace with radial wood growth via tangential broadening of the fusiform initials, resulting in progressive outward expansion in tracheid diameters and an absence of de novo tracheid files. This pattern appears in distal lycopsid axes but has not been investigated in proximal-most trunk vasculature where wood was thickest and primary xylem thinnest. Here, a ground-level trunk vasculature fossil of Sigillaria approximata in transverse section is described. This proximal vasculature diverges from the expectations of the current lycopsid wood production model in two main ways: first, inner and outer wood tracheids have approximately the same lumen diameters, such that there is no trend towards centrifugally increasing lumen diameters; and second, de novo cell files commonly appear within the wood. The outwards rate of cambial circumference expansion closely tracks the outwards rate of new wood tracheid file appearance, suggesting that the addition of new files is the primary way the cambium expanded proximally. Because this vasculature can only be studied in transverse section, the developmental mode producing new files cannot be determined. However, evidence from this specimen is sufficient to demonstrate that arborescent lycopsid wood production was more complex than previously understood.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49337904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 1

Surrounded by concrete: genetic isolation of Tillandsia recurvata L. in an urban landscape in southeastern Brazil 混凝土环绕：巴西东南部城市景观中蒂兰的遗传隔离

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-17 DOI: 10.1093/botlinnean/boad031

Megan Quail, F. Ramos, T. Dallimore, P. Ashton, Jennifer Clayton-Brown, J. Provan, S. Batke

{"title":"Surrounded by concrete: genetic isolation of Tillandsia recurvata L. in an urban landscape in southeastern Brazil","authors":"Megan Quail, F. Ramos, T. Dallimore, P. Ashton, Jennifer Clayton-Brown, J. Provan, S. Batke","doi":"10.1093/botlinnean/boad031","DOIUrl":"https://doi.org/10.1093/botlinnean/boad031","url":null,"abstract":"\u0000 Increasing urban expansion has resulted in the decline of many natural and seminatural communities globally. However, the connectivity and genetic structure of species that survive in these urban landscapes have received little attention, especially with regard to epiphytic plants. This study aimed to describe and evaluate the connectivity and genetic structure of populations of Tillandsia recurvata, a highly abundant and widely distributed atmospheric epiphyte, amongst urban green spaces within a city. A total of 288 T. recurvata individuals were sampled across 65 trees throughout the city of Alfenas in South-East Brazil. We designed seven novel microsatellite markers and used four cross-amplified loci to determine the basic genetic structure of T. recurvata. All populations showed high global spatial genetic structure, which indicated low connectivity between urban populations. The findings of this study, as well as evidence from previous assessments of T. recurvata genetic structure, suggest that the combined effects of genetic drift, breeding system, and dispersal may have dictated the connectivity of these urban populations. This study represents an important step towards understanding epiphyte population structure within urban landscapes. Low connectivity across urban landscapes is likely to benefit epiphytes such as T. recurvata, due to their adaptability and high tolerance; this suggests a bleak future for many other more sensitive epiphytic species under predicted urbanization globally.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44941597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Intracellular gene transfer and codon usage of cytoplasmic genomes in green plants 绿色植物细胞质基因组的细胞内基因转移和密码子使用

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-14 DOI: 10.1093/botlinnean/boad017

Tingting Zhang, Yang-Yan Zhang, Xiao-Ling Wang, Chen-Qi Zhang, Wenyong Shi, Ai-Gen Fu, Min-Feng Fang, Xiao Zhang, Zhong‐Hu Li

{"title":"Intracellular gene transfer and codon usage of cytoplasmic genomes in green plants","authors":"Tingting Zhang, Yang-Yan Zhang, Xiao-Ling Wang, Chen-Qi Zhang, Wenyong Shi, Ai-Gen Fu, Min-Feng Fang, Xiao Zhang, Zhong‐Hu Li","doi":"10.1093/botlinnean/boad017","DOIUrl":"https://doi.org/10.1093/botlinnean/boad017","url":null,"abstract":"\u0000 Intracellular gene transfer is widely recognized as one of the most important driving forces for species evolution. Here we investigated transferred cytoplasmic motifs in green plants including spore-bearing plants and seed-bearing plants (hereafter termed spore plants and seed plants) . Our analyses revealed that gene transfer in spore plants was characterized by shorter motifs than that of seed plants. Several spore species did not exhibit intracellular gene transfer. Meanwhile, high frequency transferred tRNA genes were identified with average values of minimum free energy at moderate level. From the chloroplast to the mitochondrial genome, trnP was found to have transferred with high frequency in green plants. In gene transfer from the mitochondrial to the chloroplast genome, trnN was found to be a highly transferred gene. We observed that several tRNA genes including trnF, trnW, and trnN were involved in bidirectional transfer, which may be related to application strategy of functional protein-coding genes in a plant’s adaptive evolution. Codon Adaptation Index (CAI) analysis showed that codon usage was unbalanced in spore and seed plants. CAI values for seed plants were higher than those for spore plants in general, which may reveal rapid divergence adaptability of codon usage in the former. These results provide novel insights into gene transfer and codon usage within cytoplasmic genomes.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41399256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Young stem and leaf anatomy of 15 Malagasy-endemic Diospyros species (Ebenaceae): taxonomic implications 马达加斯加特有的15种薯蓣(Ebenaceae)的幼茎和叶片解剖:分类意义

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-07 DOI: 10.1093/botlinnean/boad013

Ninah Andrianasolo Sandratriniaina, Ravo Nantenaina Ramanantsialonina, Bakolimalala Rakouth, M. Wiemann, J. Hermanson, Bako Harisoa Ravaomanalina

{"title":"Young stem and leaf anatomy of 15 Malagasy-endemic Diospyros species (Ebenaceae): taxonomic implications","authors":"Ninah Andrianasolo Sandratriniaina, Ravo Nantenaina Ramanantsialonina, Bakolimalala Rakouth, M. Wiemann, J. Hermanson, Bako Harisoa Ravaomanalina","doi":"10.1093/botlinnean/boad013","DOIUrl":"https://doi.org/10.1093/botlinnean/boad013","url":null,"abstract":"\u0000 Eighty-eight of the 255 Diospyros species from Madagascar are potential sources of ebony wood. Unfortunately, several species are currently threatened with extinction due in part to illegal and unsustainable logging. Reliable identification of living Diospyros species is necessary prior to any sustainable exploitation, so as not to compromise those species threatened with extinction. This study aims to identify features that might contribute to supporting taxonomic studies and to provide a complementary tool for the identification of standing trees. Fifteen species of Diospyros endemic to Madagascar were studied using standard anatomical methods. Each species showed a different shape of the leaf midrib and some have distinctive leaf anatomical characteristics, such as the presence of extrafloral nectaries in the distal part of the petiole in Diospyros baronii and filiform sclerenchyma in the mesophyll in Diospyros lewisiae. Statistical analysis showed that petiole and midrib vascular patterns, spongy parenchyma structure, the presence of papillae, thickness of epidermis, presence of extrafloral nectaries, stratification of epidermis, and presence of a cuticle are useful to distinguish species groups and even some species. The anatomy of young stems and leaves of Diospyros species from Madagascar is examined for the first time; the study will be extended to other potentially exploitable species.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41969893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Eocene palynoflora from the La Marcelina Formation, Patagonia, Argentina 阿根廷巴塔哥尼亚La Marcelina组始新世孢粉植物群

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-07 DOI: 10.1093/botlinnean/boad016

S. Noetinger, I. Aramendía, Roberto R. Pujana, J. G. García Massini, V. Barreda

引用次数: 0

The origin and fate of fungal mitochondrial horizontal gene transferred sequences in orchids (Orchidaceae) 兰花（兰科）真菌线粒体水平基因转移序列的起源与命运

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-05 DOI: 10.1093/botlinnean/boad019

Janice Valencia-D., Kurt M. Neubig, D. Clark

引用次数: 0

Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics 精子科茜草科（精子科）分支中圆形分子的形态和进化及其系统学意义

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-04 DOI: 10.1093/botlinnean/boad023

Mariela Nuñez-Florentin, B. Verstraete, R. M. Salas, S. Dessein

{"title":"Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics","authors":"Mariela Nuñez-Florentin, B. Verstraete, R. M. Salas, S. Dessein","doi":"10.1093/botlinnean/boad023","DOIUrl":"https://doi.org/10.1093/botlinnean/boad023","url":null,"abstract":"\u0000 The orbicules are tiny structures of sporopollenin that occur on the interior wall of anthers in several groups of plants, and they are associated with pollen grains and tapetal cells. Although their function remains still unresolved, they have been widely used in systematics. Rubiaceae is one of the most studied families in this aspect. However, scarce information is available about the orbicules in the tribe Spermacoceae, especially in the Spermacoce clade. The main objectives of this work were to investigate the occurrence, general morphology, evolution, and systematic utility of the orbicular characters in the Spermacoce clade. We investigated the presence/absence, size, abundance, shape, and ornamentation of orbicules in 104 specimens from 84 species in the Spermacoce clade using scanning electron microscopy (SEM). On the basis of these features, the ancestral state reconstruction analyses were performed on a custom-made phylogeny by stochastic character mapping. The orbicules are present in 38 (44%) of 84 analysed species, corresponding to 13 genera (56%) of the Spermacoce clade. Seven genera have orbicules in all analysed species, eight genera lack orbicules in all analysed species, and six genera show both presence and absence of orbicules. The absence of orbicules was estimated to be the ancestral state for the Spermacoce clade and the presence of orbicules evolved several times independently within Clade B. The absence of orbicules in the common ancestor of the Spermacoce clade can be seen as one of the independent losses that occurred during the evolutionary history of the Rubiaceae.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44869991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phylogenetic relationships and diversification dynamics of Cerastium (Alsineae: Caryophyllaceae): implications for biogeographical patterns of herbs in the Northern Hemisphere Cerastium（Alsineae:石竹科）的系统发育关系和多样化动态：对北半球草本植物生物地理格局的影响

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-03 DOI: 10.1093/botlinnean/boad018

Cui Liu, Rui Zhang, Lin Li, Junyan Su, Shengdan Wu, L. Xiong, Linjing Zhang

{"title":"Phylogenetic relationships and diversification dynamics of Cerastium (Alsineae: Caryophyllaceae): implications for biogeographical patterns of herbs in the Northern Hemisphere","authors":"Cui Liu, Rui Zhang, Lin Li, Junyan Su, Shengdan Wu, L. Xiong, Linjing Zhang","doi":"10.1093/botlinnean/boad018","DOIUrl":"https://doi.org/10.1093/botlinnean/boad018","url":null,"abstract":"\u0000 The evolutionary history of herbaceous species in the Northern Hemisphere remains poorly understood. The genus Cerastium is one of the most species-rich herbaceous genera in the Alsineae (Caryophyllaceae), and is mainly distributed in the Northern Hemisphere. Thus, it provides an ideal opportunity to explore the biogeographical history of herbs in the Northern Hemisphere. Here, we present a comprehensive phylogenetic tree for Cerastium with 75 species based on one nuclear and five plastid DNA markers. We then use an integrated phylogenetic, molecular dating, biogeographical, and diversification rate method to examine the spatiotemporal evolution of Cerastium. Cerastium is strongly supported as monophyletic and contains three major clades (Orthodon, Strephodon, and C. fragillimum). Cerastium originated from Europe in the middle Miocene (c. 13.45 million years ago), and subsequently colonized the New World, Africa, Asia, and Australasia through multiple intercontinental dispersal events. The dispersal of Cerastium from Europe (to both the East and West) and subsequent diversifications contributed to the formation of its contemporary Holarctic distribution pattern. The genus experienced rapid lineage accumulation during the late Miocene, possibly coinciding with a global decrease in temperature. These findings highlight the importance of the Northern Hemisphere in herbaceous species diversification in the late Miocene and Pliocene, and will deepen our understanding of the evolution of herbaceous plants.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48634652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Floral trait variation in a putative hybrid zone between specialist pollination systems: how could it impact pollinator attraction? 专业传粉系统间的杂交区花性状变异:它如何影响传粉者的吸引力?

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-01 DOI: 10.1093/botlinnean/boad021

Maria A. M. S. Couto, M. Teixeira, Alexia Gope, Alice Backes, Daniele M. Rodrigues, G. Soares, C. Turchetto

{"title":"Floral trait variation in a putative hybrid zone between specialist pollination systems: how could it impact pollinator attraction?","authors":"Maria A. M. S. Couto, M. Teixeira, Alexia Gope, Alice Backes, Daniele M. Rodrigues, G. Soares, C. Turchetto","doi":"10.1093/botlinnean/boad021","DOIUrl":"https://doi.org/10.1093/botlinnean/boad021","url":null,"abstract":"\u0000 Floral traits are used as signals to attract pollinators and play an important role in species identification and isolation. Nicotiana is a genus with a diverse range of flower morphologies, colours, and pollination systems related to a natural history of hybridization, a driver of speciation in this genus. Nicotiana alata and Nicotiana forgetiana are pollinated by hawkmoths and hummingbirds, respectively, and a putative hybrid population was recently found. This population presents flowers with intermediate phenotypes providing an opportunity to investigate the impact of hybridization on floral trait variation. Here we investigated the floral shape, floral pigments, and nectar traits in a putative hybrid population, hereafter termed atypical populations (AP) compared to phenotypes of allopatric populations of both species. We found a high variation in floral pigmentation in AP plants and observed phenotype segregation in some genotypes. Nicotiana forgetiana and AP plants showed the same flavanol peaks as Nicotiana alata, suggesting the same UV-absorbent phenotype attractive to hawkmoths. The geometric morphometric results showed that the intermediate-coloured flowers had similar floral shape and size to N. alata. Our results suggest that the putative hybrid population would be able to attract the same parental pollinator—hawkmoths and hummingbirds—making backcrossing events possible and attracting other pollinators, such as bees.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45273026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Repeated evolution of pollination syndromes in a highly diverse bromeliad lineage is correlated with shifts in life form and habitat 在高度多样化的凤梨科谱系中，传粉综合征的反复进化与生命形式和栖息地的变化有关

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-01 DOI: 10.1093/botlinnean/boad015

Beatriz Neves, Paola L. Ferreira, F. Prosdocimi, I. M. Kessous, D. R. Couto, R. L. Moura, F. Salgueiro, A. Costa, C. Bacon, A. Antonelli

{"title":"Repeated evolution of pollination syndromes in a highly diverse bromeliad lineage is correlated with shifts in life form and habitat","authors":"Beatriz Neves, Paola L. Ferreira, F. Prosdocimi, I. M. Kessous, D. R. Couto, R. L. Moura, F. Salgueiro, A. Costa, C. Bacon, A. Antonelli","doi":"10.1093/botlinnean/boad015","DOIUrl":"https://doi.org/10.1093/botlinnean/boad015","url":null,"abstract":"\u0000 Mutualistic plant-pollinator interactions play a critical role in the diversification of flowering plants. The spatiotemporal correlates of such interactions can be understood in a phylogenetic context. Here, we generate ddRAD-seq data for the highly diverse Vriesea-Stigmatodon lineage to test for correlated trait evolution among pollination syndromes and life form, habitat type, and altitude. Our results show that pollination syndromes are correlated with changes in life form and habitat type. The ancestor of the Vriesea-Stigmatodon lineage was likely bat pollinated, rock dwelling and inhabited open, mid-elevation forests. Transitions from bat to hummingbird pollination are correlated with transitions to the epiphytic life form in shaded habitats, whereas bat pollination is correlated with the rock-dwelling life form and open habitats. Our dated phylogenetic tree reveals independent origins of hummingbird pollination, occurring twice in Vriesea at c. 5.8 and 5.4 Mya. The timing for the shifts in pollination syndrome coincides with geological and environmental transformations across the Serra do Mar Mountain Chain, which increased habitat heterogeneity where Vriesea and their mutualists diversified. The phylogenetic tree reinforces the non-monophyly of taxonomic sections within the genus Vriesea previously defined by flower morphology, indicating that some lineages should be treated as species complexes. This study identifies synergetic drivers of speciation in a tropical biodiversity hotspot.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44765253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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