Botanical Journal of the Linnean Society最新文献_第10页

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":null,"pages":null},"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":null,"pages":null},"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

Morphological and anatomical evolution of species of Valeriana (Caprifoliaceae) during the uplift of the Andean range 安第斯山脉隆升过程中缬草属植物的形态和解剖学演化

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-07-01 DOI: 10.1093/botlinnean/boad011

R. Cruz, A. Klimeš, J. Doležal, P. Sklenář, J. Klimešová

{"title":"Morphological and anatomical evolution of species of Valeriana (Caprifoliaceae) during the uplift of the Andean range","authors":"R. Cruz, A. Klimeš, J. Doležal, P. Sklenář, J. Klimešová","doi":"10.1093/botlinnean/boad011","DOIUrl":"https://doi.org/10.1093/botlinnean/boad011","url":null,"abstract":"\u0000 Andean species of Valeriana are frequently pointed to as an example of island woodiness, i.e. plants with herbaceous ancestors that usually evolve woodier forms on islands. We investigated this phenomenon through morphoanatomical and phylogenetic analyses. Plants were collected in the Páramos of Ecuador and had their vegetative morphology described. Stems were sectioned for histological analyses. We mapped the morphoanatomical data plus the maximum reported size for these and other species of the genus, on phylogenetic trees reconstructed on the basis of previously published sequences. Bigger than their Holarctic counterparts, the ancestor of the South American Valeriana was likely to have had a maximum size of 132 cm, and then after evolved to bigger and smaller sizes in a pattern similar to Brownian motion, as supported by phylogenetic signal values. We classified the collected plants into six growth forms (rosette herbs, semirosette herbs, elevated rosettes, elevated semirosettes, shrubs, and lianas), that are not directly related to variable levels of woodiness, as pointed out by our histological analyses. However, the production of unlignified parenchyma in the wood is very frequent, except in older regions of shrubs. The ancestor of the South American Valeriana is also very likely to have unlignified parenchyma in its wood.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45239724","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 morphology and development of Epimedium pubescens and Plagiorhegma dubium (Berberidaceae) and their systematic significance 毛淫羊藿和杜氏小白菜的花形态、发育及其系统意义

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-30 DOI: 10.1093/botlinnean/boad012

Yu Zhang, Jing-zhi Gong, Chao-Xia Gui, Si-Yu Xie, Zhaoping Yang, M. Luo, Sui-Xia Ning, Zhao-Yang Chang, B. Kang, Liang Zhao, L. R. De Craene

{"title":"Floral morphology and development of Epimedium pubescens and Plagiorhegma dubium (Berberidaceae) and their systematic significance","authors":"Yu Zhang, Jing-zhi Gong, Chao-Xia Gui, Si-Yu Xie, Zhaoping Yang, M. Luo, Sui-Xia Ning, Zhao-Yang Chang, B. Kang, Liang Zhao, L. R. De Craene","doi":"10.1093/botlinnean/boad012","DOIUrl":"https://doi.org/10.1093/botlinnean/boad012","url":null,"abstract":"\u0000 Epimedium and Plagiorhegma are the representatives of two early-diverging clades in Podophylloideae of Berberidaceae. Flowers are dimerous and trimerous respectively, but their floral development is little known. Here, we used scanning electron microscopy to clarify the structure and development of flower and inflorescence in Epimedium pubescens and Plagiorhegma dubium and compared these with other Berberidaceae to better understand floral evolution within the family. Our results show that the two genera share some significant features. The petal and stamen primordia emerge independently. The carpel is ascidiate from the earliest stages of development. The ovule is anatropous and bitegmic. However, E. pubescens has a paniculate inflorescence, while a lateral floral bud is initiated but aborted in P. dubium. In E. pubescens, both inner sepals and petals are delayed compared with other organs (vs. delay in petal development only for P. dubium). Petals of E. pubescens have a nectariferous spur (vs. no nectariferous tissue for P. dubium). The style of E. pubescens is long with a flat stigma (vs. short with trumpet-shaped stigma for P. dubium). These differences suggest that Epimedium and Plagiorhegma may not be closely related and support placing them separately in two clades of Podophylloideae, complementing results from molecular studies.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49500323","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

Combining Angiosperms353 and Sanger data provides support for the reinstatement of the genus Myrianthemum (Melastomataceae) 结合Angiosperms353和Sanger的数据，为肉豆蔻属(Melastomataceae)的恢复提供了支持。

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-29 DOI: 10.1093/botlinnean/boad024

Luo Chen, G. Kadereit, Marie Claire Veranso‐Libalah

{"title":"Combining Angiosperms353 and Sanger data provides support for the reinstatement of the genus Myrianthemum (Melastomataceae)","authors":"Luo Chen, G. Kadereit, Marie Claire Veranso‐Libalah","doi":"10.1093/botlinnean/boad024","DOIUrl":"https://doi.org/10.1093/botlinnean/boad024","url":null,"abstract":"\u0000 The increasing availability of DNA sequence data, in particular target enrichment data based on the universal Angiosperms353 probe set, but also accumulated Sanger data from previous phylogenetic studies, is facilitating the placement of taxa that are difficult to place with certainty based on morphological evidence alone. Here, we investigate phylogenetic relationships of Medinilla mirabilis (Melastomataceae), a species distributed in central Africa and currently classified in the mega-diverse genus Medinilla of tribe Sonerileae. Medinilla mirabilis is a twining liana with verticillate leaves when young, spherical inflorescences, 4-merous flowers, dimorphic stamens, and baccate fruits. Our results revealed that M. mirabilis is sister to tribe Dissochaeteae and only distantly related to Medinilla. We also provide new data on wood anatomical and seed morphological characters of M. mirabilis. The alternate inter-vessel pits in M. mirabilis and Dissochaeteae are consistent with the phylogenetic placement. Seeds of M. mirabilis are similar to those of Dissochaeteae and of Medinilla. Due to its unique morphology and phylogenetic position, we propose to reinstate the monospecific genus Myrianthemum with Myrianthemum mirabile. This necessitates expansion of the Southeast Asian tribe Dissochaeteae to include Myrianthemum as its only African member. Our study of M. mirabile demonstrates that the combined application of Angiosperms353 and Sanger data is a cost-effective approach to phylogenetically place enigmatic taxa.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47982777","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

Cytomolecular characterization of early and late condensing chromosome regions in some Annonaceae species 部分番荔枝科植物早期和晚期染色体浓缩区的细胞分子特征

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-29 DOI: 10.1093/botlinnean/boad020

Amanda Santos, Thiago Nascimento, L. Felix, M. Guerra

{"title":"Cytomolecular characterization of early and late condensing chromosome regions in some Annonaceae species","authors":"Amanda Santos, Thiago Nascimento, L. Felix, M. Guerra","doi":"10.1093/botlinnean/boad020","DOIUrl":"https://doi.org/10.1093/botlinnean/boad020","url":null,"abstract":"\u0000 The condensation patterns (CPs) of prophase chromosomes represent poorly explored and little understood karyotype features. Three distinct chromosome domains are observed in conventionally stained prophases of most angiosperms with small chromosomes: heterochromatin and early condensing euchromatin (ECEu), which are observed as early condensing regions (ECRs), and late condensing euchromatin or late condensing regions (LCRs). All three prophase domains have been often reported in the Annonaceae species. To gain a better understanding of these regions, we investigated the CPs, heterochromatic bands, and rDNA sites in seven Annona species with 2n = 14, 28, and 54 and Xylopia frutescens with 2n = 16. Besides, histone H4K5 acetylation, telomeric sites, and DNA methylation were analysed in some of these species. LCRs corresponded to a small hyperacetylated, and hypomethylated fraction of the metaphase chromosomes. During interphase, the chromocentres displayed variable proportions of heterochromatin and ECEu. The LCRs and ECRs were conserved even between disploid and polyploid species, whereas rDNA sites and heterochromatic bands varied in number and location. Our data suggest that chromatin compartmentalization in ECR and LCR regions may represent the simplest functional organization of the small chromosomes of Annonaceae, while the remaining characters are less relevant.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49291081","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

Evolution of cold tolerance in the highly stress-tolerant samphires and relatives (Salicornieae: Amaranthaceae) 高抗逆性海参及其近缘种(水杨科:苋科)的耐寒性进化

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-19 DOI: 10.1093/botlinnean/boad009

Ruben Cousins-Westerberg, Nicole Dakin, Laura Schat, G. Kadereit, A. M. Humphreys

{"title":"Evolution of cold tolerance in the highly stress-tolerant samphires and relatives (Salicornieae: Amaranthaceae)","authors":"Ruben Cousins-Westerberg, Nicole Dakin, Laura Schat, G. Kadereit, A. M. Humphreys","doi":"10.1093/botlinnean/boad009","DOIUrl":"https://doi.org/10.1093/botlinnean/boad009","url":null,"abstract":"\u0000 Low temperature constitutes one of the main barriers to plant distributions, confining many clades to their ancestrally tropical biome. However, recent evidence suggests that transitions from tropical to temperate biomes may be more frequent than previously thought. Here, we study the evolution of cold and frost tolerance in the globally distributed and highly stress-tolerant Salicornieae (Salicornioideae, Amaranthaceae s.l.). We first generate a phylogenetic tree comprising almost all known species (85-90%), using newly generated (n = 106) and published nuclear-ribosomal and plastid sequences. Next, we use geographical occurrence data to document in which clades and geographical regions cold-tolerant species occur and reconstruct how cold tolerance evolved. Finally, we test for correlated evolution between frost tolerance and the annual life form. We find that frost tolerance has evolved independently in up to four Northern Hemisphere lineages but that annuals are no more likely to evolve frost tolerance than perennials, indicating the presence of different strategies for adapting to cold environments. Our findings add to mounting evidence for multiple independent out-of-the-tropics transitions among close relatives of flowering plants and raise new questions about the ecological and physiological mechanism(s) of adaptation to low temperatures in Salicornieae.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41342124","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

Architectural traits underlie growth form diversity and polycarpic versus monocarpic life histories in Cerberiopsis (Apocynaceae) 建筑特征是夹竹桃科(Cerberiopsis)生长多样性和多食与单食生活史的基础。

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-16 DOI: 10.1093/botlinnean/boad007

C. Salmon, S. Isnard, Y. Caraglio, P. Heuret

{"title":"Architectural traits underlie growth form diversity and polycarpic versus monocarpic life histories in Cerberiopsis (Apocynaceae)","authors":"C. Salmon, S. Isnard, Y. Caraglio, P. Heuret","doi":"10.1093/botlinnean/boad007","DOIUrl":"https://doi.org/10.1093/botlinnean/boad007","url":null,"abstract":"\u0000 Plant architecture strongly influences plant growth habits, as it determines the arrangement, function and fate of meristems. How architecture could be involved in the monocarpic life history, i.e. dying after flowering, remains poorly investigated. Monocarpy is evident in some species since they are annual or because their single stem flowers apically. However, monocarpy in long-lived branched trees is rare and remains poorly understood. We aim to highlight the architectural features involved in the monocarpic strategy of Cerberiopsis candelabra, a rainforest tree endemic to New Caledonia. We conducted a comparative analysis of the genus, which comprises three species with different growth habits. Twenty plants of each species were studied at different ontogenic stages. We compared their developmental sequence and analysed their processes of growth, branching, flowering and reiteration. We identified a combination of traits that distinguish the species, and we found a syndrome of two architectural features that support the monocarpic strategy in C. candelabra: the synchronous flowering of all terminal meristems and the absence of delayed branching. Flowering in C. candelabra preferentially occurs when the complete architectural sequence is developed, but the plant never shows signs of senescence, suggesting that environmental stresses, such as wind disturbance, could be the main trigger for flowering. The architecture of C. candelabra is suggested to be the most derived in the genus.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48066540","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

Trichomes in the megadiverse genus Croton (Euphorbiaceae): a revised classification, identification parameters and standardized terminology 大戟科大戟属的毛状体:修订的分类、鉴定参数和标准化术语

2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-13 DOI: 10.1093/botlinnean/boad008

Natânia Pereira Pinto-Silva, Katiúscia Freire De Souza, Otávio Luis Marques Silva, Narah Costa Vitarelli, Amanda Da Paixão Noronha Pereira, Deborah Aragão Soares, Rodolfo Carneiro Sodré, Débora Medeiros, Maria Beatriz Rossi Caruzo, Daniela Santos Carneiro Torres, Marcos José Da Silva, Renata Maria Strozi Alves Meira, Ricarda Riina, Ana Carla Feio

{"title":"Trichomes in the megadiverse genus <i>Croton</i> (Euphorbiaceae): a revised classification, identification parameters and standardized terminology","authors":"Natânia Pereira Pinto-Silva, Katiúscia Freire De Souza, Otávio Luis Marques Silva, Narah Costa Vitarelli, Amanda Da Paixão Noronha Pereira, Deborah Aragão Soares, Rodolfo Carneiro Sodré, Débora Medeiros, Maria Beatriz Rossi Caruzo, Daniela Santos Carneiro Torres, Marcos José Da Silva, Renata Maria Strozi Alves Meira, Ricarda Riina, Ana Carla Feio","doi":"10.1093/botlinnean/boad008","DOIUrl":"https://doi.org/10.1093/botlinnean/boad008","url":null,"abstract":"Abstract Trichomes are key functional traits that protect plants against abiotic stresses, herbivores and pathogens. In addition to their ecological roles, trichomes show high morphological variability in many lineages, providing useful characters for species characterization and taxon delimitation. Here, we focus on trichomes in Croton, a megadiverse genus (c. 1200 spp.) of Euphorbiaceae, in which these structures are ubiquitous and exhibit significant variation in form, location on the plant body, density and function. Owing to their functional and taxonomic relevance and the current need for further standardization of their terminology and classification, we revised previous trichome classifications used in the genus. We also provide new trichome data by expanding taxon sampling and using different methodological approaches in plant anatomy to improve understanding of the structural patterns of the trichome types present in the genus. On the basis of our results and literature review, we propose a new classification for trichomes in Croton based on well-defined parameters; this clarifies existing redundancies, is consistent with anatomical evidence and can be easily updated as new types are revealed in future surveys. This contribution will improve communication among taxonomists and promote more meaningful morphological comparability across systematics studies, including those focusing on morphological evolution and functional traits.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136106605","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

Pollen characteristics used in determination and systematics of Quercus (Fagaceae): new data and verification of previous concepts 花粉特征在壳斗科栎属鉴定和系统学中的应用：新数据和对已有概念的验证

IF 2.4 2区生物学

Botanical Journal of the Linnean Society Pub Date : 2023-06-08 DOI: 10.1093/botlinnean/boad001

M. Tekleva, S. Polevova, N. Naryshkina

{"title":"Pollen characteristics used in determination and systematics of Quercus (Fagaceae): new data and verification of previous concepts","authors":"M. Tekleva, S. Polevova, N. Naryshkina","doi":"10.1093/botlinnean/boad001","DOIUrl":"https://doi.org/10.1093/botlinnean/boad001","url":null,"abstract":"\u0000 Quercus (oaks) is a large and important genus of woody angiosperms occurring in a wide range of environments and often occupying a dominant position in temperate forests of the Northern Hemisphere or being a minor component in some subtropical and tropical forests. A reliable determination of fossil dispersed oak pollen requires combined light, scanning electron (SEM) and transmission electron microscopy (TEM) studies and relevant comparative data on extant oak species. We provide SEM and TEM data on 22 extant Quercus spp., representing all sections of the genus. The main objectives of our study were to clarify the nature of the so-called geniculus, a characteristic equatorial bulge in the exine of the colpus found in many oak species, and to test previous hypotheses about the structural basic units of the exine in Quercus. Our ontogenetic study and oxidative experiment involving several Quercus spp. and one Trigonobalanus sp. resulted in a more accurate interpretation of the nature of the geniculus and exine elements, their different developmental states and, therefore, their more reliable application in the systematics and evolution of the genus Quercus and Fagaceae in general.","PeriodicalId":9178,"journal":{"name":"Botanical Journal of the Linnean Society","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43804781","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