AoB Plants最新文献

{"title":"Forecasts of climate-driven habitat suitability distribution are complicated by taxonomic and cytogenetic complexity in <i>Rhexia</i> (Melastomataceae).","authors":"Lyanna DeLeon, Karina Mendez, Jonathan Barz, Michelle L Gaynor, Makenzie E Mabry, Pamela S Soltis, Douglas E Soltis","doi":"10.1093/aobpla/plag043","DOIUrl":"10.1093/aobpla/plag043","url":null,"abstract":"<p><p><i>Rhexia</i> (Melastomataceae), a temperate genus composed of 13 species in eastern North America, provides a useful system for evaluating how taxonomic and cytogenetic complexity influence forecasts of climate-driven habitat suitability distribution. Ecological niche models incorporating climatic and edaphic variables were used to estimate current and future habitat suitability for diploid, polyploid, and mixed-cytotype species. Habitat suitability was strongly associated with soil texture, hydrological conditions, and precipitation, with suitable environments characterized by sandy, acidic, and seasonally moist habitats. Projections under future climate scenarios revealed highly variable, species-specific responses, with some taxa exhibiting substantial expansions in the distribution of suitable habitat and others experiencing pronounced contractions. Contrary to expectations, ploidal level was not consistently associated with niche breadth or climate response, as both diploid and polyploid species displayed a wide range of outcomes. These findings highlight the need for flexible, habitat-focused conservation strategies that consider hydrological and edaphic variables and demonstrate how taxonomic and cytogenetic complexity can complicate forecasts of biodiversity change under future climate scenarios.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 5","pages":"plag043"},"PeriodicalIF":3.1,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13643487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149138941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional traits reveal unaccounted diversity within <i>Sonchus asper</i> (L.) Hill (Asteraceae) in the northern Mediterranean and enable the reinstatement of ancient taxa.","authors":"José A Mejías, Myong-Suk Cho, Regina Berjano, Anass Terrab, Pedro Costales-Maestre, José L Silva, Seung-Chul Kim","doi":"10.1093/aobpla/plag040","DOIUrl":"https://doi.org/10.1093/aobpla/plag040","url":null,"abstract":"<p><p>Functional traits express the ecological and evolutionary attributes of individuals that compose taxa, providing robust criteria to detect speciation when integrated with phylogenies. We tested this approach in <i>Sonchus asper</i> (L.) Hill, a putatively self-fertilizing annual weed that has recently been reported to exhibit extensive floral and life-form variation across the northern Mediterranean. This variability was already documented in the nineteenth century, but it is incongruent with current subspecific classifications based on leaf arrangement. We sampled 40 populations encompassing this variation, assigning each to (a) one of the four morphotypes defined by floral traits and life forms and (b) a leaf arrangement group. To assess their taxonomic relevance, we tested grouping characters as functional traits and analysed the consistency of these assignments with the phylogeny (ITS/ETS and chloroplast DNA markers) and genetic structure [amplified fragment length polymorphism (AFLP) markers]. Phylogenetic analysis using floral traits and life forms identified three well-supported clades that contradict leaf-arrangement taxonomy. The earliest-diverging clade comprises the common, annual, self-fertilizing <i>S. asper</i>. The remaining two clades consist of self-incompatible plants: one contains the rhizomatous morphotype, whereas the other groups annual and biennial plants. These life-history strategies exhibited distinct AFLP-based genetic profiles, alongside complex cpDNA phylogeographical patterns. The congruence between DNA analyses and functional value of floral and life-form traits corroborates the proposed morphotypes as distinct evolutionary lineages. This reveals unaccounted-for biodiversity and supports reinstating historical taxa. Our study shows that combining functional traits with genealogical relationships provides a powerful operational taxonomic criterion that integrates ecological and evolutionary species concepts.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 5","pages":"plag040"},"PeriodicalIF":3.1,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13626247/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149117050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Embolism does not spread outwards from simulated herbivory damage sites in leaves.","authors":"Lisa Sarah García, Ilaíne Silveira Matos, Todd Dawson, Benjamin Wong Blonder","doi":"10.1093/aobpla/plag033","DOIUrl":"10.1093/aobpla/plag033","url":null,"abstract":"<p><p>Embolism is known to occur in leaf venation networks as the leaf dries out. This process is associated with reduced leaf hydraulic conductance that can impact transpiration and photosynthesis. We hypothesize that herbivory or other leaf mechanical damage could introduce additional air into the leaf, leading to further venation-mediated embolism spread during drought. Using the optical vulnerability method, we compared embolism spatial spread rates after either midrib or lamina damage in two species of contrasting venation architecture (pinnate vs. palmate). We then tested the hypothesis that embolism would spread faster near damage locations. We found that there was no consistent effect of damage but rather substantial spatial heterogeneity in how damage influences leaf hydraulic conductance. Herbivory damage and hydraulic damage may have independent effects in the studied species.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag033"},"PeriodicalIF":3.1,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13501410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148814320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative seed dormancy and germination responses to drying and flooding in two Sri Lankan wild rice species.","authors":"T Sajeevan, Malaka M Wijayasinghe, K M G G Jayasuriya, A Corli, Fiona R Hay, A Mondoni","doi":"10.1093/aobpla/plag034","DOIUrl":"10.1093/aobpla/plag034","url":null,"abstract":"<p><p>Sri Lankan wild rice, <i>Oryza nivara</i> and <i>Oryza rhizomatis</i>, are two threatened species occurring in habitats with contrasting dry and wet seasonal patterns. Both species produce dormant seeds at dispersal, yet their germination phenology remains poorly understood. This study aimed to elucidate their germination strategies and dormancy mechanisms to support conservation efforts. We hypothesized that dormancy alleviation in these species is niche-specific; specifically, that <i>O. rhizomatis</i> requires longer periods of dry storage (after-ripening) and shorter period of flooding than <i>O. nivara</i>. (i) Freshly harvested seeds of both species were subjected to nine dry-storage periods (0, 2, 4, 6, 8, 10, 12, 18, and 20 months) at 25°C and 60% relative humidity (RH). Following storage, seeds were incubated on moist tissue paper for 30 days at 25°C under a 12 h light/dark regime. Additionally, a second set of seeds stored for 6, 8, 18, and 20 months was exposed to flooding treatments (FTs) (1, 2, or 4 weeks) prior to incubation. (ii) In both species, germination percentage increased up to ∼80% with increasing dry-storage periods up to 12 months. Under prolonged dry storage, germination percentage declined in <i>O. rhizomatis</i> and none of the seeds germinated in <i>O. nivara</i>. In <i>O. rhizomatis</i>, a short FT (1 week) increased the germination percentage compared with dry storage alone, whereas longer flooding periods (2-4 weeks) reduced it. In contrast, flooding had no significant effect on seed germination in <i>O. nivara</i>. (iii) Overall, prolonged drying effectively breaks dormancy in both species, preventing germination immediately after dispersal when drought risk is high and seedling survival is low. The species exhibit distinct physiological dormancy breaking responses that likely contribute to their differing ecological and geographical distributions. Predicted increases in precipitation under climate change may constrain recruitment by limiting dry after-ripening or increasing flooding duration, posing a particularly high risk for the endemic <i>O. rhizomatis</i>.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag034"},"PeriodicalIF":3.1,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13458942/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148714323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variable responses to tree root exclusion by understory plant functional types in a xeric longleaf pine woodland.","authors":"Phoebe A Judge, Ricardo M Holdo, O Stribling Stuber, Steven T Brantley","doi":"10.1093/aobpla/plag032","DOIUrl":"10.1093/aobpla/plag032","url":null,"abstract":"<p><p>Plant species interactions in woodlands help maintain the coexistence of trees and groundcover, contributing to high plant diversity. Interactions can be either positive or negative and take place both above and below ground. Both competitive and facilitative interactions have been documented in longleaf pine woodlands, but the dynamics of these interactions and their effects on plant physiology are poorly understood. Our objective was to quantify the impact of tree root exclusion on physiology and growth of understory plant functional types (PFTs) that represent the diversity of longleaf pine woodlands. We used trenching to isolate understory plants from tree roots and compared soil moisture, leaf water potential (Ψ), leaf-level gas exchange, and plant growth for four understory species representing different PFTs in trenched root exclusion plots and untrenched control plots. We hypothesized that root exclusion would reduce understory plant performance compared to untrenched control plots by isolating plants from facilitative effects of canopy trees, but our hypothesis was not supported. We observed better plant performance in trenched plots for some PFTs, and no differences in plant growth for any PFT. These data suggest competitive effects of tree root presence, but results varied among PFT. The study period was unusually wet, with rainfall 53% above normal. In the context of previous studies, these results suggest that belowground competition is more important than facilitation during a wet year, and the relationship between longleaf pines and understory plants shifts from facilitation to competition depending on rainfall.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag032"},"PeriodicalIF":3.1,"publicationDate":"2026-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13387064/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148550743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maternal sex influences seed dormancy in a gynodioecious species.","authors":"Brooklyn A Richards, F Andrew Jones, Thomas N Kaye","doi":"10.1093/aobpla/plag031","DOIUrl":"10.1093/aobpla/plag031","url":null,"abstract":"<p><p>Maternal genotype and environment can influence seed characteristics, yet sex-specific maternal effects in gynodioecious systems remain poorly understood. We evaluated how maternal sex affects seed viability, mass, and dormancy in the gynodioecious plant, <i>Sidalcea campestris</i>. We compared seed viability and mass to determine whether differences in seed quality contribute to germination variability and female advantage. Seeds were scarified by manually nicking the seed coat with a razor blade and cold stratified at 5°C. Germination of seeds with and without scarification across 0, 6, and 12 weeks of cold stratification was evaluated in order to test how maternal sex affects dormancy. Seed viability and mass did not differ between sexes, suggesting that these traits do not contribute to female advantage in this system. Scarification and cold stratification increased germination, indicating germination may be influenced by physical and physiological dormancy. However, the effect of dormancy-breaking treatments on germination depended on maternal plant sex, with seeds from hermaphrodites being more easily released from dormancy than seeds from females. Seeds from hermaphrodites germinated significantly more than seeds from females when scarified, with probabilities 119% higher at 0 weeks and 18% higher at 12 weeks of stratification. Such differences may have consequences on the timing of germination and survival of seeds produced by females and hermaphrodites, with effects that may vary across time and space. Further work is needed to understand how sex-specific maternal influence on dormancy shape the ecology and evolution of gynodioecy.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag031"},"PeriodicalIF":3.1,"publicationDate":"2026-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13520120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148841913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scent rhythms in twilight-flowering <i>Passiflora pohlii</i>: osmophore structure and terpenoid volatiles.","authors":"Angie Zuleidi Mayorquin, Elder Antônio Sousa Paiva, Stefan Dötterl, Reisla Oliveira, Diogo Montes Vidal, Clemens Schlindwein","doi":"10.1093/aobpla/plag030","DOIUrl":"10.1093/aobpla/plag030","url":null,"abstract":"<p><p>Some plants emit floral scents at night and are pollinated by nocturnal bees, yet their scent dynamics, composition, and emitting tissues remain poorly understood. Here, we study <i>Passiflora pohlii</i>, a passionflower whose blossoms open at dawn, are pollinated by crepuscular <i>Ptiloglossa</i> bees, and emit a strong citrus-like scent to (i) identify the chemical composition of the floral scent, (ii) quantify the rhythm of volatile emissions, and (iii) localize and characterize the ultrastructure of osmophores, to understand better their role in synchronizing pollination within a restricted temporal window. Osmophores were localized using morphochemical techniques and characterized by cellular structure. Volatile compounds were collected by dynamic headspace at early (dawn; complete and dissected flowers) and late (early morning; complete flowers) anthesis, and analysed by gas chromatography-mass spectrometry (GC-MS). Sequential ultrastructural analyses tracked subcellular changes correlated with scent emission. The outer corona filaments were the main scent source, containing osmophores and releasing volatiles. Scent emission peaked at dawn, temporally aligned with the activity of <i>Ptiloglossa</i> pollinators, before declining by 90% in late anthesis, despite unchanged floral turgor. TEM revealed organelle degradation, correlating with the decline in scent emission. The scent profile was dominated by monoterpenoids, primarily 'citronelloids' (geraniol and derivatives thereof). We identify a coordinated system of structural, chemical, and temporal characteristics in a species of passionflower that appear to be tailored to the sensory characteristics, body size, and crepuscular flight activities of the pollinating <i>Ptiloglossa</i> bees. These findings emphasize the importance of chemical communication in narrow plant-pollinator associations involving crepuscular bees.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag030"},"PeriodicalIF":3.1,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13346110/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148425469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A tale of three morphs: nectar, reproductive compatibility, and morph abundance explain reproductive success within a polymorphic ginger from Western Ghats, India.","authors":"Saket Shrotri, Vinita Gowda","doi":"10.1093/aobpla/plag029","DOIUrl":"10.1093/aobpla/plag029","url":null,"abstract":"<p><p>Although floral colour polymorphism is common in angiosperms, the functional nature of polymorphic traits within a species remains poorly understood. Colour morphs may differ in traits other than colour, including nectar reward, pollinator visitation, and reproductive compatibility. We studied bract colour polymorphism in a nocturnal ginger, <i>Curcuma caulina</i>, to ask: (i) Do the nectar rewards, hawkmoth visitations, and reproductive compatibility differ among morphs? (ii) Do the morphs differ in their female reproductive success, and does this correlate with their observed abundance? We measured floral and vegetative traits in three dominant morphs and compared nectar rewards, nocturnal pollinator visitation rates, intra- and inter-morph compatibility, and natural fruit and seed production. The morphs did not differ in morphology but differed in their bract colour and within-population abundance. The common green-red morph has low-energy nectar, low pollinator visitation rates, and is self-incompatible, but has the highest reproductive success. The rare red-white morph, despite high-energy nectar, higher pollinator visitation rates, and a leaky self-compatibility, shows lower female reproductive success. Thus, the morphs have contrasting nectar traits, reproductive compatibility, and reproductive success. Path analyses indicated that nectar reward, pollinator visitation, reproductive compatibility, and abundance jointly explained variation in female reproductive outcomes, although their effects differed among morphs. These results show that bract colour morphs of <i>C. caulina</i> differ in multiple ecological and reproductive traits and provide a foundation for future studies testing male fitness, seedling survival, clonal structure, and abiotic selection.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag029"},"PeriodicalIF":3.1,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13334228/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148438541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of contrasting herbivore cues on seedlings of a long-lived woody tree: growth, chemistry, and resistance to herbivores.","authors":"Santhi P Bhavanam, Evan L Preisser, Colin M Orians","doi":"10.1093/aobpla/plag026","DOIUrl":"10.1093/aobpla/plag026","url":null,"abstract":"<p><p>Plant-induced defences against herbivores have the potential to modify plant growth, fitness, and the outcome of plant-herbivore interactions. Plants use a variety of cues to initiate the induction of defences, including physical tissue damage, cues released by damaged plant tissues of neighbouring plants (e.g. methyl jasmonate, MeJA), and cues that indicate herbivore presence but are not associated with herbivore damage (e.g. locomotion mucus of herbivorous molluscs). Evidence shows that both herbivore-damage and herbivore-presence cues can generate induced defences in herbaceous plants over relatively short time periods. However, the immediate and long-term effects of these cues on seedlings of deciduous broad-leaved woody plants remain poorly understood. Here, we compare the effects of two cues, MeJA and locomotion mucus of the dusky slug <i>Arion subfuscus</i>, on the growth and defence traits of sugar maple, <i>Acer saccharum</i>, seedlings at multiple timepoints. Specifically, we exposed 4-week-old seedlings to these cues in a greenhouse experiment and quantified their effects on seedling growth, total phenolics, and growth of spongy moth <i>Lymantria dispar</i> across the seedlings' growing season. As expected, MeJA had a negative effect on seedling growth, a positive effect on total phenolics, and no effect on the growth of <i>L. dispar</i>. In contrast, the slug locomotion mucus did not negatively affect growth or change total phenolic levels. Our results highlight that herbivore cues can induce responses in seedling growth and defence in deciduous broad-leaved woody plant seedlings; however, these responses vary with cue type and the induced responses decay for some seedling traits but not others.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 3","pages":"plag026"},"PeriodicalIF":3.1,"publicationDate":"2026-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13278774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148296982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dioecious <i>Poa</i> species diversification parallels dune formation in Atlantic coastal ecosystems.","authors":"Liliana Mónica Giussani, Agostina Belén Sassone, Florencia Rocío Sabena, Cintia Eleonora Celsi, Franco Santin, Leopoldo Javier Iannone","doi":"10.1093/aobpla/plag028","DOIUrl":"10.1093/aobpla/plag028","url":null,"abstract":"<p><p>The southern Atlantic coastal dunes of South America formed ca. 6000-4000 years ago. Within this dynamic landscape, three dioecious species of <i>Poa</i> occur: <i>Poa lanuginosa</i>, a widely distributed species, and two dune endemics, <i>Poa bergii</i> and <i>Poa schizantha</i>, occupying contrasting microhabitats from foredunes to interdunal slacks and inland grasslands. We investigated the evolutionary relationships, population structure, and extent of introgression among these dune-adapted grasses, conducting a population-level phylogenomic analysis using genotyping-by-sequencing. Genome-wide data provided robust phylogenetic resolution, whereas Neighbor-Net analyses revealed reticulate relationships and admixture among taxa. We tested introgression, and significant signals of gene flow were detected across major groups. Bayesian and discriminant analysis of principal components analyses identified distinct genetic lineages within both dune endemics. <i>Poa bergii</i> comprised three geographically structured genetic groups, and <i>P. schizantha</i> showed clear internal differentiation despite its restricted distribution. Instead, <i>P. lanuginosa</i> has a broad distribution across both dune and continental habitats and was inferred to be a paraphyletic lineage that may represent the ancestral lineage of both dune endemic species. These distinct patterns of divergence and population structure indicate species-specific evolutionary responses to a recent and dynamic dune landscape, in which habitat heterogeneity and differential environmental tolerance have driven lineage diversification. Together, our findings highlight the role of coastal dune dynamics in recent adaptation and speciation. Ongoing gene flow alongside clear lineage structure is consistent with recent and still incomplete speciation among these dune species. <i>Poa schizantha</i> emerged as the most differentiated lineage, combining morphological distinctiveness, ecological specialization, and strong genomic structure. Our results emphasize the importance of integrating population genetics into conservation strategies to preserve both endemic taxa and ongoing evolutionary processes in threatened coastal environments.</p>","PeriodicalId":48955,"journal":{"name":"AoB Plants","volume":"18 4","pages":"plag028"},"PeriodicalIF":3.1,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13322398/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148370367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}