American Journal of Botany最新文献

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An evolutionary disruption of the buzz pollination syndrome in neotropical montane plants 新热带高山植物嗡嗡授粉综合征的进化破坏。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-07-02 DOI: 10.1002/ajb2.16367
Eduardo K. Nery, Mayara K. Caddah, Fabian A. Michelangeli, Anselmo Nogueira
{"title":"An evolutionary disruption of the buzz pollination syndrome in neotropical montane plants","authors":"Eduardo K. Nery,&nbsp;Mayara K. Caddah,&nbsp;Fabian A. Michelangeli,&nbsp;Anselmo Nogueira","doi":"10.1002/ajb2.16367","DOIUrl":"10.1002/ajb2.16367","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>Under pollinator limitations, specialized pollination syndromes may evolve toward contrasting responses: a generalized syndrome with increased pollinator attraction, pollinator reward, and pollen transfer capacity; or the selfing syndrome with increased self-pollen deposition, but reduced pollinator attraction and pollen transfer capacity. The buzz-pollination syndrome is specialized to explore female vibrating bees as pollinators. However, vibrating bees become less-active pollinators at montane areas of the Atlantic Forest (AF) domain. This study investigated whether the specialized buzz-pollination syndrome would evolve toward an alternative floral syndrome in montane areas of the AF domain, considering a generalized and the selfing syndromes as alternative responses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We utilized a lineage within the buzz-pollinated <i>Miconia</i> as study system, contrasting floral traits between montane AF-endemic and non-endemic species. We measured and validated floral traits that were proxies for pollinator attraction, reward access, pollen transfer capacity, and self-pollen deposition. We inferred the evolution of floral trait via phylogenetic comparative methods.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>AF-endemic species have selectively evolved greater reward access and more frequently had generalist pollination. Nonetheless, AF-endemic species also have selectively evolved toward lower pollen transfer capacity and greater self pollination. These patterns indicated a complex evolutionary process that has jointly favored a generalized and the selfing syndromes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The buzz pollination syndrome can undergo an evolutionary disruption in montane areas of the AF domain. This floral syndrome is likely more labile than often assumed, allowing buzz-pollinated plants to reproduce in environments where vibrating bees are less-reliable pollinators.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141490595","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
Nitrogen-fixing bacteria boost floral attractiveness in a tropical legume species during nutrient limitation. 固氮细菌在热带豆科植物养分受限期间提高了花的吸引力。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-07-02 DOI: 10.1002/ajb2.16363
Caroline Souza, Lorena B Valadão-Mendes, Isadora Schulze-Albuquerque, Pedro J Bergamo, Douglas D Souza, Anselmo Nogueira
{"title":"Nitrogen-fixing bacteria boost floral attractiveness in a tropical legume species during nutrient limitation.","authors":"Caroline Souza, Lorena B Valadão-Mendes, Isadora Schulze-Albuquerque, Pedro J Bergamo, Douglas D Souza, Anselmo Nogueira","doi":"10.1002/ajb2.16363","DOIUrl":"https://doi.org/10.1002/ajb2.16363","url":null,"abstract":"<p><strong>Premise: </strong>Legumes establish mutualistic interactions with pollinators and nitrogen (N)-fixing bacteria that are critical for plant reproduction and ecosystem functioning. However, we know little about how N-fixing bacteria and soil nutrient availability affect plant attractiveness to pollinators.</p><p><strong>Methods: </strong>In a two-factorial greenhouse experiment to assess the impact of N-fixing bacteria and soil types on floral traits and attractiveness to pollinators in Chamaecrista latistipula (Fabaceae), plants were inoculated with N-fixing bacteria (NF+) or not (NF-) and grown in N-rich organic soil (+N organic soil) or N-poor sand soil (-N sand soil). We counted buds and flowers and measured plant size during the experiment. We also measured leaf, petal, and anther reflectance with a spectrophotometer and analyzed reflectance curves. Using the bee hexagon model, we estimated chromatic contrasts, a crucial visual cues for attracting bees that are nearby and more distant.</p><p><strong>Results: </strong>NF+ plants in -N sand soil had a high floral display and color contrasts. On the other hand, NF- plants and/or plants in +N organic soil had severely reduced floral display and color contrasts, decreasing floral attractiveness to bee pollinators.</p><p><strong>Conclusions: </strong>Our findings indicate that the N-fixing bacteria positively impact pollination, particularly when nutrients are limited. This study provides insights into the dynamics of plant-pollinator interactions and underscores the significant influence of root symbionts on key floral traits within tropical ecosystems. These results contribute to understanding the mechanisms governing mutualisms and their consequences for plant fitness and ecological dynamics.</p>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141490596","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
Linking the macroclimatic niche of native lithophytic ferns and their prevalence in urban environments 将本地石生蕨类植物的宏观气候生态位与它们在城市环境中的分布联系起来。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-07-01 DOI: 10.1002/ajb2.16364
Tammo Reichgelt
{"title":"Linking the macroclimatic niche of native lithophytic ferns and their prevalence in urban environments","authors":"Tammo Reichgelt","doi":"10.1002/ajb2.16364","DOIUrl":"10.1002/ajb2.16364","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>Vertical surfaces in urban environments represent a potential expansion of niche space for lithophytic fern species. There are, however, few records of differential success rates of fern species in urban environments.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The occurrence rates of 16 lithophytic fern species native to the northeastern USA in 14 biomes, including four urban environments differentiated by percentage of impervious surfaces, were evaluated. In addition, the natural macroclimatic ranges of these species were analyzed to test whether significant differences existed in climatic tolerance between species that occur in urban environments and species that do not.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Three species appear to preferentially occur in urban environments, two species may facultatively occur in urban environments, and the remaining 11 species preferentially occur in nondeveloped rural environments. The natural range of fern species that occur in urban environments had higher summer temperatures than the range of species that do not, whereas other macroclimatic variables, notably winter temperatures and precipitation, were less important or insignificant.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Vertical surfaces in urban environments may represent novel niche space for some native lithophytic fern species in northeastern USA. However, success in this environment depends, in part, on tolerance of the urban heat island effect, especially heating of impervious surfaces in summer.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16364","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141465661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Naturally diverse plant communities do not resist invasion by the strong competitor, Microstegium vimineum 自然多样化的植物群落无法抵御强大的竞争者--Microstegium vimineum 的入侵。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-28 DOI: 10.1002/ajb2.16362
Griffin Lee Williams, J. Stephen Brewer
{"title":"Naturally diverse plant communities do not resist invasion by the strong competitor, Microstegium vimineum","authors":"Griffin Lee Williams,&nbsp;J. Stephen Brewer","doi":"10.1002/ajb2.16362","DOIUrl":"10.1002/ajb2.16362","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>Theory predicts and empirical studies have shown that ecologically manipulated communities with high species diversity are resistant to invasion, but do these predictions and results hold true when applied to highly competitive invaders in natural communities? Few studies of diversity-mediated invasion resistance have measured both invasion resistance and invader impact in the same study.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We used a two-year field experiment to test: (1) diversity-mediated competitive resistance to patch expansion by the grass, <i>Microstegium vimineum</i>; and (2) the competitive effect of <i>M. vimineum</i> on resident plant diversity. We examined responses of <i>M. vimineum</i> to two native plant density-reduction treatments that had opposite effects on species diversity: (1) reducing species richness via the removal of rare species; and (2) reducing dominance by reducing the density of the dominant resident species. We examined the effects of <i>M. vimineum</i> reduction by pre-emergent herbicide on resident diversity in the second year of the study.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Neither rare species removal nor dominant species reduction significantly increased <i>M. vimineum</i> density (relative growth rate). The pre-emergent herbicide dramatically reduced <i>M. vimineum</i> in year 2 of the study, but not most resident plants, which were perennials and indirectly benefited from the herbicide at a more productive site, presumably due to reduced competition from <i>M. vimineum</i>.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Diversity-mediated resistance did not effectively deter invasion by a highly competitive invader. In the case of <i>M. vimineum</i> and at more productive sites, it would appear that nearly complete removal of this invader is necessary to preserve plant species diversity.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141465678","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
Challenge accepted: Evolutionary lineages versus taxonomic classification of North American shrub willows (Salix) 接受挑战:北美灌木柳(Salix)的进化世系与分类学分类。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-25 DOI: 10.1002/ajb2.16361
Pia Marinček, Étienne Léveillé-Bourret, Ferris Heiduk, Jing Leong, Stéphane M. Bailleul, Martin Volf, Natascha D. Wagner
{"title":"Challenge accepted: Evolutionary lineages versus taxonomic classification of North American shrub willows (Salix)","authors":"Pia Marinček,&nbsp;Étienne Léveillé-Bourret,&nbsp;Ferris Heiduk,&nbsp;Jing Leong,&nbsp;Stéphane M. Bailleul,&nbsp;Martin Volf,&nbsp;Natascha D. Wagner","doi":"10.1002/ajb2.16361","DOIUrl":"10.1002/ajb2.16361","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>The huge diversity of <i>Salix</i> subgenus <i>Chamaetia/Vetrix</i> clade in North America and the lack of phylogenetic resolution within this clade has presented a difficult but fascinating challenge for taxonomists to resolve. Here we tested the existing taxonomic classification with molecular tools.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In this study, 132 samples representing 46 species from 22 described sections of shrub willows from the United States and Canada were analyzed and combined with 67 samples from Eurasia. The ploidy levels of the samples were determined using flow cytometry and nQuire. Sequences were produced using a RAD sequencing approach and subsequently analyzed with ipyrad, then used for phylogenetic reconstructions (RAxML, SplitsTree), dating analyses (BEAST, SNAPPER), and character evolution analyses of 14 selected morphological traits (Mesquite).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The RAD sequencing approach allowed the production of a well-resolved phylogeny of shrub willows. The resulting tree showed an exclusively North American (NA) clade in sister position to a Eurasian clade, which included some North American endemics. The NA clade began to diversify in the Miocene. Polyploid species appeared in each observed clade. Character evolution analyses revealed that adaptive traits such as habit and adaxial nectaries evolved multiple times independently.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The diversity in shrub willows was shaped by an evolutionary radiation in North America. Most species were monophyletic, but the existing sectional classification could not be supported by molecular data. Nevertheless, monophyletic lineages share several morphological characters, which might be useful in the revision of the taxonomic classification of shrub willows.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16361","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141454616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Relationships of the wild peanut species, section Arachis: A resource for botanical classification, crop improvement, and germplasm management 野生花生物种(Arachis 部分)的关系:植物分类、作物改良和种质管理的资源。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-19 DOI: 10.1002/ajb2.16357
Soraya C. M. Leal-Bertioli, Francisco J. de Blas, M. Carolina Chavarro, Charles E. Simpson, José F.M. Valls, Shyam P. Tallury, Márcio C. Moretzsohn, Adriana R. Custodio, H. Thomas Stalker, Guillermo Seijo, David J. Bertioli
{"title":"Relationships of the wild peanut species, section Arachis: A resource for botanical classification, crop improvement, and germplasm management","authors":"Soraya C. M. Leal-Bertioli,&nbsp;Francisco J. de Blas,&nbsp;M. Carolina Chavarro,&nbsp;Charles E. Simpson,&nbsp;José F.M. Valls,&nbsp;Shyam P. Tallury,&nbsp;Márcio C. Moretzsohn,&nbsp;Adriana R. Custodio,&nbsp;H. Thomas Stalker,&nbsp;Guillermo Seijo,&nbsp;David J. Bertioli","doi":"10.1002/ajb2.16357","DOIUrl":"10.1002/ajb2.16357","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>Wild species are strategic sources of valuable traits to be introduced into crops through hybridization. For peanut, the 33 currently described wild species in the section <i>Arachis</i> are particularly important because of their sexual compatibility with the domesticated species, <i>Arachis hypogaea</i>. Although numerous wild accessions are carefully preserved in seed banks, their morphological similarities pose challenges to routine classification.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Using a high-density array, we genotyped 272 accessions encompassing all diploid species in section <i>Arachis</i>. Detailed relationships between accessions and species were revealed through phylogenetic analyses and interpreted using the expertise of germplasm collectors and curators.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Two main groups were identified: one with A genome species and the other with B, D, F, G, and K genomes. Species groupings generally showed clear boundaries. Structure within groups was informative, for instance, revealing the history of the proto-domesticate <i>A. stenosperma</i>. However, some groupings suggested multiple sibling species. Others were polyphyletic, indicating the need for taxonomic revision. Annual species were better defined than perennial ones, revealing limitations in applying classical and phylogenetic species concepts to the genus<i>.</i> We suggest new species assignments for several accessions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Curated by germplasm collectors and curators, this analysis of species relationships lays the foundation for future species descriptions, classification of unknown accessions, and germplasm use for peanut improvement. It supports the conservation and curation of current germplasm, both critical tasks considering the threats to the genus posed by habitat loss and the current restrictions on new collections and germplasm transfer.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141426140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Clinal variation in quantitative traits but not in evolutionary potential along elevational and latitudinal gradients in the widespread Anthyllis vulneraria 在广布的鱼鳞藻中,沿海拔和纬度梯度存在数量性状而非进化潜力的支系变异。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-18 DOI: 10.1002/ajb2.16360
Laura Daco, Guy Colling, Diethart Matthies
{"title":"Clinal variation in quantitative traits but not in evolutionary potential along elevational and latitudinal gradients in the widespread Anthyllis vulneraria","authors":"Laura Daco,&nbsp;Guy Colling,&nbsp;Diethart Matthies","doi":"10.1002/ajb2.16360","DOIUrl":"10.1002/ajb2.16360","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>Strong elevational and latitudinal gradients allow the study of genetic differentiation in response to similar environmental changes. However, it is uncertain whether the environmental changes along the two types of gradients result in similar genetically based changes in quantitative traits. Peripheral arctic and alpine populations are thought to have less evolutionary potential than more central populations do.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We studied quantitative traits of the widespread <i>Anthyllis vulneraria</i> in a common garden. Plants originated from 20 populations along a 2000-m elevational gradient from the lowlands to the elevational limit of the species in the Alps, and from 20 populations along a 2400-km latitudinal gradient from the center of the distribution of the species in Central Europe to its northern distributional margin.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Most traits showed similar clinal variations with elevation and latitude of origin, and the magnitude of all measured traits in relation to mean annual temperature was similar. Higher <i>Q</i><sub>ST</sub> values than <i>F</i><sub>ST</sub> values in several traits indicated diversifying selection, but for others <i>Q</i><sub>ST</sub> was smaller than <i>F</i><sub>ST</sub>. Genetic diversity of quantitative traits and neutral molecular markers was not correlated. Plasticity in response to favorable conditions declined with elevation and less strongly with latitude of origin, but the evolvability of traits did not.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The clinal variation suggests adaptive differentiation of quantitative traits along the two gradients. The evolutionary potential of peripheral populations is not necessarily reduced, but lower plasticity may threaten their survival under rapidly changing climatic conditions.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16360","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141417232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Corrigendum to “The tiny drivers behind plant ecology and evolution” 植物生态和进化背后的微小驱动力》勘误。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-12 DOI: 10.1002/ajb2.16358
{"title":"Corrigendum to “The tiny drivers behind plant ecology and evolution”","authors":"","doi":"10.1002/ajb2.16358","DOIUrl":"10.1002/ajb2.16358","url":null,"abstract":"<p>Lau, J. A, and L. G. Bolin. 2024. The tiny drivers behind plant ecology and evolution. <i>American Journal of Botany</i> e16234. https://doi.org/10.1002/ajb2.16324</p><p>Our original schematic in Figure 1, which described the processes discussed in our article, included a drawing of an epiphytic orchid. Such a plant would not typically grow in soils and would not have the root structure illustrated in the figure. Accordingly, we have replaced the aboveground plant drawing with a more appropriate taxon.</p><p>We apologize for this error.</p>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16358","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141309354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Investigating historical drivers of latitudinal gradients in polyploid plant biogeography: A multiclade perspective 调查多倍体植物生物地理学纬度梯度的历史驱动因素:多物种视角
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-12 DOI: 10.1002/ajb2.16356
Eric R. Hagen, Thais Vasconcelos, James D. Boyko, Jeremy M. Beaulieu
{"title":"Investigating historical drivers of latitudinal gradients in polyploid plant biogeography: A multiclade perspective","authors":"Eric R. Hagen,&nbsp;Thais Vasconcelos,&nbsp;James D. Boyko,&nbsp;Jeremy M. Beaulieu","doi":"10.1002/ajb2.16356","DOIUrl":"10.1002/ajb2.16356","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Premise</h3>\u0000 \u0000 <p>The proportion of polyploid plants in a community increases with latitude, and different hypotheses have been proposed about which factors drive this pattern. Here, we aimed to understand the historical causes of the latitudinal polyploidy gradient using a combination of ancestral state reconstruction methods. Specifically, we assessed whether (1) polyploidization enables movement to higher latitudes (i.e., polyploidization precedes occurrences in higher latitudes) or (2) higher latitudes facilitate polyploidization (i.e., occurrence in higher latitudes precedes polyploidization).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We reconstructed the ploidy states and ancestral niches of 1032 angiosperm species at four paleoclimatic time slices ranging from 3.3 million years ago to the present, comprising taxa from four well-represented clades: Onagraceae, Primulaceae, <i>Solanum</i> (Solanaceae), and Pooideae (Poaceae). We used ancestral niche reconstruction models alongside a customized discrete character evolution model to allow reconstruction of states at specific time slices. Patterns of latitudinal movement were reconstructed and compared in relation to inferred ploidy shifts.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>No single hypothesis applied equally well across all analyzed clades. While significant differences in median latitudinal occurrence were detected in the largest clade, Poaceae, no significant differences were detected in latitudinal movement in any clade.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our preliminary study is the first to attempt to connect ploidy changes to continuous latitudinal movement, but we cannot favor one hypothesis over another. Given that patterns seem to be clade-specific, more clades must be analyzed in future studies for generalities to be drawn.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7691,"journal":{"name":"American Journal of Botany","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajb2.16356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141309355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Corrigendum to “Patterns of leaf trait variation underlie ecological differences among sympatric tree species of Damburneya in a tropical rainforest” 叶片性状变异模式是热带雨林中 Damburneya 同域树种生态差异的基础》的更正。
IF 2.4 2区 生物学
American Journal of Botany Pub Date : 2024-06-11 DOI: 10.1002/ajb2.16359
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