Neutral and adaptive genetic diversity in plants: An overview

Frontiers in Ecology and Evolution, Год журнала: 2023, Номер 11

Опубликована: Фев. 16, 2023

Genetic diversity is a prerequisite for evolutionary change in all kinds of organisms. It generally acknowledged that populations lacking genetic variation are unable to evolve response new environmental conditions (e.g., climate change) and thus may face an increased risk extinction. Although the importance incorporating into design conservation measures now well understood, less attention has been paid distinction between neutral (NGV) adaptive (AGV) variation. In this review, we first focus on utility NGV by examining ways quantify it, reviewing applications infer ecological processes, exploring its designing plant species. Against background, then summarize identify estimate AGV discuss potential use conservation. After comparing considering their pros cons context, conclude there urgent need better understanding role adaptation. To date, however, only few studies non-model species aimed at deciphering genomic basis complex trait Therefore, researchers practitioners should keep utilizing develop relevant strategies rare endangered until more estimates available.

Язык: Английский

---

Mind the lag: understanding delayed genetic erosion

Опубликована: Фев. 23, 2024

The delay between environmental changes and the corresponding genetic responses within populations is a common but surprisingly overlooked phenomenon in ecology, evolutionary conservation genetics. This time lag problem can lead to erroneous assessments when solely relying on data. We identify population size, life-history traits, reproductive strategies severity of decline as main determinants lags, evaluate potential confounding factors affecting parameters during propose methodological approaches that allow controlling for them. Considering current unprecedented rate diversity species loss, we expect our novel interpretive framework lags stimulate further research discussion most appropriate analyse conservation.

Язык: Английский

---

Herbaceous plant diversity in forest ecosystems: patterns, mechanisms, and threats

Plant Ecology, Год журнала: 2021, Номер 223(2), С. 117 - 129

Опубликована: Ноя. 12, 2021

Язык: Английский

---

Genetic Diversity of Phyllanthus emblica From Two Different Climate Type Areas

Frontiers in Plant Science, Год журнала: 2020, Номер 11

Опубликована: Ноя. 30, 2020

Phyllanthus emblica L. is a well-known medicinal and edible plant species. Various compounds in the fruit make it an important promising economic material. The widely distributed Southwestern Southern China. However, due to massive deforestation land reclamation as well deterioration of its natural habitat recent years, wild resources this species have been sharply reduced, rare see large-scale P. forests so far. In order effectively protect rationally utilize species, we investigated genetic diversity, structure, population dynamics 260 individuals from 10 populations sampled dry climate area Yunnan wet Guangxi using 20 polymorphic EST-SSR markers. We found high diversity at level ( H e = 0.796) within 0.792), but low differentiation among F ST 0.084). addition, most variation existed (92.44%) compared with (7.56%). Meanwhile, NJ tree, STRUCTURE, hierarchical analysis suggested that were clustered into two distinct groups. contrast, group 0.786, N 11.790, I 1.962) was higher than 0.673, 9.060, 1.555), which might be attributed combined effects altitude, precipitation, geographic distance. Interestingly, only altitude precipitation had significant pure on former slightly stronger. DIYABC effective size contracted beginning Last Glacial Maximum. These features provided vital information for conservation sustainable development , they also new insights guidelines ecological restoration dry-hot valleys karst areas Guangxi.

Язык: Английский

---

Study on the Genetic Diversity Characteristics of the Endemic Plant Rhododendron bailiense in Guizhou, China Based on SNP Molecular Markers

Ecology and Evolution, Год журнала: 2025, Номер 15(2)

Опубликована: Фев. 1, 2025

Rhododendron bailiense was identified as a new species in 2013, with approximately 150 individuals existing globally, found only Dafang County and Panzhou City, Guizhou Province, China. Despite its discovery, the genetic diversity population structure of this remain poorly understood, hindering efforts to collect conserve wild germplasm resources. In study, double digest restriction-site associated DNA sequencing conducted on 26 samples from two populations R. identify single nucleotide polymorphism (SNP) loci. Using these data, research explores infers their dynamics evolutionary history. The results indicate that has moderate level (π = 0.2489, H o 0.2039, e 0.2331). Genetic differentiation between is relatively high (55.94%), coefficient (F ST ) 0.1907. This suggests historically might have been large population, which, due geological historical events, became fragmented into populations. demonstrates heterozygote selection advantage. Conversely, faces risk inbreeding depression, further exacerbated by limited gene flow. Consequently, situ conservation recommended for while ex-situ suggested population. Additionally, breeding techniques necessary expand size maintaining diversity.

Язык: Английский

---

Exploring the Genetic Landscape of Tilia Spp. with Molecular and Statistical Tools

Horticulturae, Год журнала: 2024, Номер 10(6), С. 596 - 596

Опубликована: Июнь 6, 2024

Tree species with high ecological plasticity are recommended for use in urban green infrastructures. This study explores the genetic diversity of Tilia cordata, platyphyllos, and argentea, highlighting their contribution to landscapes. In this respect, variability individuals from four populations genus has been analyzed using Inter Simple Sequence Repeats (ISSR) molecular markers, some phenotypic characters were naked-eyed observed or determined by dendrometric measurements. Significant between studied was determined. Cluster analysis identified two main groups: cordata I II formed first cluster, platyphyllos argentea second cluster. The results confirmed separating relation visible morphological characters. Results obtained measurements represent foundation further investigations on ecology. An essential potential practical results: establishment more efficient ISSR primers identify analyzed: UBC864, A12, UBC840, A7 A13 demonstrated.

Язык: Английский

---

Plant conservation in the age of genome editing: opportunities and challenges

Genome biology, Год журнала: 2024, Номер 25(1)

Опубликована: Окт. 24, 2024

Abstract Numerous plant taxa are threatened by habitat destruction or overexploitation. To overcome these threats, new methods urgently needed for rescuing and endangered species. Here, we review the genetic consequences of threats to species populations. We highlight potential advantages genome editing mitigating negative effects caused pathogens pests climate change where other approaches have failed. propose solutions protect plants using technology unless absolutely necessary. further discuss challenges associated with in conservation mitigate decline diversity.

Язык: Английский

---

Date palm (Phoenix dactylifera L.) genetic improvement via biotechnological approaches

Tree Genetics & Genomes, Год журнала: 2022, Номер 18(3)

Опубликована: Май 30, 2022

Язык: Английский

---

Population genomics study for the conservation management of the endangered shrub Abeliophyllum distichum

Conservation Genetics, Год журнала: 2022, Номер 23(4), С. 683 - 697

Опубликована: Май 8, 2022

Abstract Natural monuments are IUCN Category III protected areas that play an important role in biodiversity conservation as they provide species refuge and allow migration. Despite their status, natural often confined to cultural fragmented landscapes due anthropogenic land-use demands. In this population genomic study, we surveyed 11 populations of the endemic shrub Abeliophyllum distichum Nakai (Oleaceae), including five monument habitats, covering its range-wide distribution South Korea. Using 2,254 SNPs markers, our results showed a mean expected heterozygosity ( He ) 0.319, with central showing significantly higher than those at periphery. There was no significant heterozygote deficiency inbreeding among studied overall F IS = −0.098), except for single (GS-NM147). Population structure differentiation moderate high ST 0.196), while recent gene flow between appeared weak, which can be attributed outcrossing mating system heterostylous plant. Based on these findings, suggestions management endangered species.

Язык: Английский

---

Across two phylogeographic breaks: Quaternary evolutionary history of a mountain aspen (Populus rotundifolia) in the Hengduan Mountains

Plant Diversity, Год журнала: 2024, Номер 46(3), С. 321 - 332

Опубликована: Апрель 3, 2024

Biogeographical barriers to gene flow are central plant phylogeography. In East Asia, distribution is greatly influenced by two phylogeographic breaks, the Mekong-Salween Divide and Tanaka-Kaiyong Line, however, few studies have investigated how these affect genetic diversity of species that distributed across both. Here we used 14 microsatellite loci four chloroplast DNA fragments examine patterns 49 populations Populus rotundifolia, a spans both Line in southwestern China. Demographic migration hypotheses were tested using coalescent-based approaches. Limited historical was observed between western eastern groups P. but substantial occurred manifesting clear admixture high group. Wind-borne pollen seeds may facilitated dispersal rotundifolia following prevalent northwest winds spring. We also found Hengduan Mountains, where multiple detected, acted on whole as barrier rotundifolia. Ecological niche modeling suggested has undergone range expansion since last glacial maximum, demographic reconstruction indicated an earlier population around 600 Ka. The pattern reflects interplay biological traits, wind patterns, barriers, differentiation, Quaternary climate history. This study emphasizes need for lines evidence understanding evolution plants topographically complex areas.

Язык: Английский

---