High-Resolution Genome Assembly and Population Genetic Study of the Endangered MapleAcer pentaphyllum(Sapindaceae): Implications for Conservation Strategies DOI Open Access
Xiong Li, Lisha Jiang,

Heng‐Ning Deng

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Summary Acer pentaphyllum Diels (Sapindaceae), a highly threatened maple endemic to dry-hot valleys of the Yalong River in western Sichuan, China, requires urgent conservation efforts due its extremely rarity and restricted distribution. In this study, we present high-quality chromosome-level reference genome A. (626 Mb, 2n = 26), comprising 70.64% repetitive sequences 38,540 protein-coding genes. Phylogenetic analysis shows that diverged from clade consisting yangbiense saccharum late Eocene (∼37.83 Ma). , genes involved responding external environmental change have undergone expansion positive selection, potentially reflecting adaptive strategies. While no recent independent whole-genome duplication events were detected, rapid amplification transposable elements was observed. Population genomic 227 individuals 28 populations revealed low genetic diversity (1.04 ± 0.97 × 10 −3 ) compared other woody species. Phylogeographic patterns suggest an upstream colonization along River, with two severe population bottlenecks correlating major Pleistocene climatic transitions. addition, most exhibit high inbreeding load, particularly those at range edges (TKX, CDG, TES). Based on these insights, propose targeted strategies, including rescue measures, safeguard unique These findings not only contribute preservation but also enhance our understanding plant adaptation extreme environments impacts climate species distributions.

Language: Английский

Genetic diversity and population structure of the endangered medicinal plant Ferula sinkiangensis DOI Creative Commons
Hafiz Muhammad Wariss,

Tianxing Liu,

Hongxiang Zhang

et al.

Global Ecology and Conservation, Journal Year: 2025, Volume and Issue: unknown, P. e03437 - e03437

Published: Jan. 1, 2025

Language: Английский

Citations

1
Conservation genomics of a threatened subtropical Rhododendron species highlights the distinct conservation actions required in marginal and admixed populations DOI Creative Commons
Yu-Hang Chang, Rengang Zhang, Yang Liu

et al.

The Plant Journal, Journal Year: 2025, Volume and Issue: 122(2)

Published: April 1, 2025

SUMMARY With the impact of climate change and anthropogenic activities, underlying threats facing populations with different evolutionary histories distributions, associated conservation strategies necessary to ensure their survival, may vary within a species. This is particularly true for marginal and/or those showing admixture. Here, we re‐sequence genomes 102 individuals from 21 locations Rhododendron vialii , threatened species distributed in subtropical forests southwestern China that has suffered habitat fragmentation due deforestation. Population structure results revealed R . can be divided into five genetic lineages using neutral single‐nucleotide polymorphisms (SNPs), whereas selected SNPs divide six lineages. Guigu (GG) population, which identified as admixed SNPs, but assigned distinct cluster non‐neutral loci. experienced multiple bottlenecks, demographic have been suggested among populations. Ecological niche modeling combined genomic offset analysis suggests population (Northeast, NE) harboring highest diversity likely risk maladaptation future. The therefore needs urgent ex situ areas where influence future predicted well buffered. Alternatively, GG potential local adaptation, will need conservation. Puer carries heaviest load, rescue. Our findings highlight how genomics, analysis, ecological integrated inform targeted

Language: Английский

Citations

0
The Contribution of Genetic and Genomic Tools in Diversity Conservation: The Case of Endemic Plants of Greece DOI Creative Commons
Eleni Liveri, Kondylia Passa, Vasileios Papasotiropoulos

et al.

Journal of Zoological and Botanical Gardens, Journal Year: 2024, Volume and Issue: 5(2), P. 276 - 293

Published: June 5, 2024

The conservation of endemic plant species has come into the global spotlight, not only because their contribution to biodiversity but also vulnerability and high extinction risk due environmental anthropogenic threats. Based on these developments, it is now essential monitor protect by applying integrated strategies, especially in view climate change, which one most severe threats plants. Genetic genomic tools provide new potential assessing quantifying genetic diversity thus can be utilized devise strategies contribute efforts. Greece comprises a hotspot Mediterranean Basin with wide variety rare, threatened, taxa. In this review, we examine several cases where broad spectrum been so far assessment management Greek Endemic Plants (GEPs). Following an extensive database search, have identified included our final data collection 19 studies concerning 32 GEPs for molecular markers used determination population structure assessment, while at same time, research outcomes taken consideration management. limited application GEP demonstrated, significance implementing comprehensive strategy that will integrate analyses derived therein highlighted.

Language: Английский

Citations

1
Current conservation status and potential distribution under climate change of Michelia lacei, a Plant Species with Extremely Small Populations in Yunnan, China DOI Creative Commons
Yang Liu, Lei Cai, Weibang Sun

et al.

Oryx, Journal Year: 2024, Volume and Issue: 58(5), P. 631 - 640

Published: Sept. 1, 2024

Abstract Michelia lacei W.W. Smith, a magnolia species categorized as Endangered on the IUCN Red List, is subject to severe disturbance. We carried out field surveys and review of literature records present detailed description current status M. . then predicted potential distribution under different climatic scenarios based 60 occurrence (53 recorded during our 7 earlier records) 19 bioclimatic variables from WorldClim database. selected 18 locations four for model training. Temperature seasonality annual temperature range were most influential predicting species. used MaxEnt climate conditions Shared Socioeconomic Pathway in future time periods determine effects change habitat suitable predict areas moderately highly will gradually decrease over time. recommend increased situ ex conservation efforts mitigate this decline protect populations

Language: Английский

Citations

1
Conservation and threatened status of plant species with extremely small populations in the karst region of southeastern Yunnan, China DOI Creative Commons
Yang Liu, Yanliang Tan, Yan-Chun Li

et al.

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Dec. 24, 2024

The southeastern Yunnan is one of the most typical areas in China with karst landforms. rich variety vegetation types and plant diversity means that threatened status are also synchronized. Over past 20 years, comprehensive conservation team for species extremely small populations (PSESP) has conducted in-depth field surveys region, combining relevant literature projects to compile a list PSESP which including endangered status, actions, scientific research. Among all 116 PSESP, relatively abundant families include Cycadaceae (12 species), Magnoliaceae (17species) Orchidaceae (18 species). Hekou Malipo counties highest number, 44 43 respectively. A total 81 included List National Key Protected Wild Plants . For 24 critically (CR) 41 (EN) represent levels severe threat. Up now, 96 have taken at least protective measure from situ conservation, ex breeding or reintroduction/reinforcement. But there still not any measures. Additionally, research been on 86 species, but 30 had initiated. threat human interference mainly overcollection habitat destruction, threats limitations imposed itself natural disasters cannot be ignored. Our findings underscore importance integrated strategies, addition reintroduction/reinforcement, we should pay attention research, germplasm environmental education ethnic culture. We propose consider establishing professional botanical garden Yunnan, hope this study can offer valuable insights biodiversity Yunnan.

Language: Английский

Citations

1
High-Resolution Genome Assembly and Population Genetic Study of the Endangered MapleAcer pentaphyllum(Sapindaceae): Implications for Conservation Strategies DOI Open Access
Xiong Li, Lisha Jiang,

Heng‐Ning Deng

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Summary Acer pentaphyllum Diels (Sapindaceae), a highly threatened maple endemic to dry-hot valleys of the Yalong River in western Sichuan, China, requires urgent conservation efforts due its extremely rarity and restricted distribution. In this study, we present high-quality chromosome-level reference genome A. (626 Mb, 2n = 26), comprising 70.64% repetitive sequences 38,540 protein-coding genes. Phylogenetic analysis shows that diverged from clade consisting yangbiense saccharum late Eocene (∼37.83 Ma). , genes involved responding external environmental change have undergone expansion positive selection, potentially reflecting adaptive strategies. While no recent independent whole-genome duplication events were detected, rapid amplification transposable elements was observed. Population genomic 227 individuals 28 populations revealed low genetic diversity (1.04 ± 0.97 × 10 −3 ) compared other woody species. Phylogeographic patterns suggest an upstream colonization along River, with two severe population bottlenecks correlating major Pleistocene climatic transitions. addition, most exhibit high inbreeding load, particularly those at range edges (TKX, CDG, TES). Based on these insights, propose targeted strategies, including rescue measures, safeguard unique These findings not only contribute preservation but also enhance our understanding plant adaptation extreme environments impacts climate species distributions.

Language: Английский

Citations

0