Towards zero extinction—A case study focusing on the plant genus Begonia in Thailand DOI Creative Commons
Sirilak Radbouchoom, Marjorie D. delos Angeles, Thamarat Phutthai

и другие.

Integrative Conservation, Год журнала: 2024, Номер unknown

Опубликована: Сен. 19, 2024

Abstract Plant species with small habitat ranges and specific edaphic requirements are highly vulnerable to extinction thus require enhanced attention in biodiversity conservation. This study was designed explore the challenges of protecting such plant by evaluating situ ex conservation capacities available for Thailand's mega‐diverse genus Begonia L. A comprehensive assessment occurrence records across country conducted evaluate spatial distribution diversity Thailand, identify hotspots, assess threats faced 60 known country, existing potential gaps. The results show that 78% Thailand extinction, Northern floristic region identified as both a hotspot major While efforts have been successful covering over 88% species, they failed provide protection required achieve zero extinction. Ex poorly developed, only 13% present botanical gardens, no seed banking or other related activities initiated. evaluation presents sharply contrasting message: on one hand, has assembled substantial protect these plants through established national parks protected areas, but essential still lacking render target achievable. We advocate implementation multi‐component strategy enable move towards even narrow high specialisation.

Язык: Английский

Twenty years of big plant genera DOI Creative Commons
Peter Moonlight, Ludwig Baldaszti, Domingos Cardoso

и другие.

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 291(2023)

Опубликована: Май 1, 2024

In 2004, David Frodin published a landmark review of the history and concepts big plant genera. Two decades taxonomic activity have taken place since, coinciding with revolution in phylogenetics bioinformatics. Here we use data from World Flora Online (WFO) to provide an updated list (more than 500 species) megadiverse 1000 flowering genera highlight changes since 2004. The number has increased 57 86; today one every four species is classified as member genus, 14% just 28 Most (71%) growth 2000 result new description, not generic re-circumscription. More 15% all currently accepted described last two are genera, suggesting that groups previously considered intractable now being actively studied taxonomically. Despite this rapid they remain significant yet understudied proportion diversity. They represent global diversity should priority only for taxonomy but understanding patterns evolution general.

Язык: Английский

Процитировано

9
Solanum pan-genetics reveals paralogues as contingencies in crop engineering DOI Creative Commons
Matthias Benoit, Katharine M. Jenike, James W. Satterlee

и другие.

Nature, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Язык: Английский

Процитировано

1
A revision of the endemic Brazilian Solanum hexandrum group (Leptostemonum, Solanum, Solanaceae) DOI Creative Commons
Sandra Knapp, Yuri Gouvêa, Leandro Lacerda Giacomin

и другие.

PhytoKeys, Год журнала: 2025, Номер 253, С. 199 - 259

Опубликована: Март 12, 2025

The Leptostemonum Clade, or the 'spiny solanums', represents half of species diversity large cosmopolitan genus Solanum (Solanaceae). Brazil is a centre both and lineage in solanums' with number lineages occurring mostly only there. Here, we treat Solanumhexandrum group, monophyletic group that part larger unresolved Erythrotrichum clade sensu lato. six treated here are all robust very prickly shrubs amongst largest showiest flowers accrescent calyces fruit often completely cover mature berry. All endemic to coastal Atlantic forests south-eastern north-eastern Brazil. We describe one new species, S.phrixothrix Gouvêa & S.Knapp, sp. nov., known from two collections made 200 years apart. Many occur small populations around isolated gneissic/granitic inselbergs, highly threatened habitat region. provide complete nomenclatural details for recognised their synonyms, descriptions, distributions including maps, illustrations, common names uses preliminary conservation assessments.

Язык: Английский

Процитировано

0
Geometric Models of Speciation in Minimally Monophyletic Genera Using High-Resolution Phylogenetics DOI Creative Commons
Richard H. Zander

Plants, Год журнала: 2025, Номер 14(4), С. 530 - 530

Опубликована: Фев. 9, 2025

High-resolution phylogenetics using both morphology and molecular data reveal surfactant-like trait buffering of peripatric descendant species that facilitate resilience for supra-specific entities across geologic time. Regular polygons inscribed in circles model balanced areas survival various numbers new one genus. This maximizes the species, with populations partly allopatric habitats sympatric areas. It extends theory advanced Willis’s Age Area hypothesis. Hollow curves bounded between a series regular their containing show ranked progression governed by similar power laws other phenomena, including Zipf’s law universal meta-law physics. matches best physics (law laws) but is only several somewhat different generated processes. A rule four can explain why most genera vascular plants exhibit hollow curve optimally to five per implies constraint on variation enhances provides explanation monophyletic skeleton macrogenera. high-resolution form ancestor–descendant analysis compared traditional phylogenetic modeling demonstrable results evolutionary Arguments are preservation scientific concepts taxa over cladistic clades.

Язык: Английский

Процитировано

0
Untangling the taxonomic knot of Croton anomalus (Euphorbiaceae), a Neotropical dry forest shrub DOI Creative Commons
Yuri Rossine, Ricarda Riina, Otávio Luís Marques da Silva

и другие.

PeerJ, Год журнала: 2025, Номер 13, С. e19176 - e19176

Опубликована: Апрель 1, 2025

Croton anomalus was described by Henri Pittier in 1930 from a collection made Estado Lara, Venezuela, and the use of name has so far been restricted to several states this country. A reevaluation species led its recircumscription recognition other countries, including Bolivia, Brazil, Colombia, French Guiana, Guyana, Mexico, Suriname. Previously, it confused with referred here as “Croton group”, namely C . acapulcensis , C. blanchetianus chiapensis jacobinensis (= sonderianus ), stahelianus We integrated morphological, phylogenetic, ecological evidence understand limits relationships within group. first studied ca. 650 herbarium specimens covering geographic range group, we inferred phylogenetic using DNA sequences nuclear plastid regions (ITS trnL-F ). also used niche modeling infer potential suitable areas for occurrence determine variables that most contribute their distribution model. Both morphological data provide synonymization under On hand, our results support two independent lineages, both distinct An emended description is provided, well designation lectotypes, illustrations, updates data, comparisons closely related species. Regarding modeling, annual precipitation warmest quarter were important explaining distributions. showed seasonally dry tropical forests Neotropics, while had Caatinga Dry Forest (Brazil), + northern South America, respectively. Our study shows importance taxonomic revisions integrative approaches disentangling boundaries elucidate biogeography conservation status.

Язык: Английский

Процитировано

0
Pollen and morphometric analysis reveal Solanum tavinuuyuku (Solanaceae), a new dioecious species from Mesoamerican Solanum sect. Anarrhichomenum DOI Creative Commons
Jacob Bryant, Mariana Vázquez, Eric J. Tepe

и другие.

PhytoKeys, Год журнала: 2025, Номер 255, С. 1 - 22

Опубликована: Апрель 4, 2025

Solanumtavinuuyuku, of the Sierra Madre del Sur ecoregion South-Central Mexico, is a viny, node-rooting species Potato clade, in subclade Solanumsect.Anarrhichomenum. Solanumtavinuuyuku distinguished from its relatives by possessing long and narrow, lanceolate, ovate to falcate, 1-3-foliate leaves with (5-)7-10 secondary veins; large, persistent pseudo-stipules found at nearly every node on herbarium material; white, violet-tinged corollas particularly pronounced floral bud. functionally dioecious, producing functional, tricolporate pollen non-functional, inaperturate short long-styled flowers, respectively, joining close relative S.appendiculatum as one only two documented dioecious entire clade. Separation S.tavinuuyuku closest ally, simple-leaved S.ionidium, based morphometric geographic evidence presented here.

Язык: Английский

Процитировано

0
An overview of floral and vegetative evolution in the Asian clade of Bulbophyllum (Orchidaceae) DOI Creative Commons
Nicha Thawara,

Panida Kongsawadworakul,

Piyakaset Suksathan

и другие.

Plant Ecology and Evolution, Год журнала: 2024, Номер 157(3), С. 313 - 326

Опубликована: Авг. 7, 2024

Background and aims – Bulbophyllum , the largest genus in Orchidaceae, exhibits a diverse morphology both reproductive vegetative characters. While trait diversity evolution has been extensively studied Malagasy species within Cirrhopetalum alliance clade, of characters at whole level Asian clade remains largely unexplored. Material methods We reconstructed phylogeny approximately 11% all using Bayesian inference maximum likelihood estimation based on nuclear (ITS) chloroplast ( mat K, psb A- trn H) DNA sequence data. This phylogenetic framework allowed us to examine two four floral through ancestral state reconstruction. Key results conclusion The character states include single leaf, distinct pseudobulbs, multiple-flowered inflorescences, lateral dorsal sepals similar length. One-leaved pseudobulbs evolved into two-leaved multiple times. Distinct gave rise indistinct twice. Multiple-flowered inflorescences shifted solitary flowers 2–3-flowered times, with some instances evolutionary reversal. Lateral sepal elongation also presents convergent scenario.

Язык: Английский

Процитировано

1
Integrative systematics with structural monophyly and ancestral signatures: Chionoloma (Bryophyta) DOI Creative Commons
Richard H. Zander

Academia Biology, Год журнала: 2024, Номер 2(4)

Опубликована: Дек. 30, 2024

The moss genus Chionoloma (Pottiaceae, Bryophyta), recently presented in a molecular analysis as massive inflated by the synonymy of several heretofore accepted genera, is deframed and reformatted to internally define minimally monophyletic genera. This resurrects from genera Oxystegus Pseudosymblepharis. Morphologically determined evolutionary relationships species are combined with signatures ancestral devise an integrated classification for group. methods include second-order morphological Markov chains, Shannon–Turing sequential Bayes statistical support, multi-node evidence ancestry. study based on data revisionary results original studies other authors herbarium specimens authentic material. reframing this portmanteau directly affects apprehension biodiversity rescues two epistemological extinction.

Язык: Английский

Процитировано

1
Towards zero extinction—A case study focusing on the plant genus Begonia in Thailand DOI Creative Commons
Sirilak Radbouchoom, Marjorie D. delos Angeles, Thamarat Phutthai

и другие.

Integrative Conservation, Год журнала: 2024, Номер unknown

Опубликована: Сен. 19, 2024

Abstract Plant species with small habitat ranges and specific edaphic requirements are highly vulnerable to extinction thus require enhanced attention in biodiversity conservation. This study was designed explore the challenges of protecting such plant by evaluating situ ex conservation capacities available for Thailand's mega‐diverse genus Begonia L. A comprehensive assessment occurrence records across country conducted evaluate spatial distribution diversity Thailand, identify hotspots, assess threats faced 60 known country, existing potential gaps. The results show that 78% Thailand extinction, Northern floristic region identified as both a hotspot major While efforts have been successful covering over 88% species, they failed provide protection required achieve zero extinction. Ex poorly developed, only 13% present botanical gardens, no seed banking or other related activities initiated. evaluation presents sharply contrasting message: on one hand, has assembled substantial protect these plants through established national parks protected areas, but essential still lacking render target achievable. We advocate implementation multi‐component strategy enable move towards even narrow high specialisation.

Язык: Английский

Процитировано

0