To mix or not to mix the sources of relocated plants? The case of the endangered Iris lortetii

Shemesh, Hagai; Shani, Gavriella; Carmel, Yohay; Kent, Rafi; Sapir, Yuval

doi:10.1016/j.jnc.2018.08.002

Cited by 7 publications

(2 citation statements)

References 47 publications

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“…Translocation efforts, either through augmentation of extant populations, reintroduction of extinct populations, or introduction into suitable habitat with no historical record of occurrence, have become increasingly important strategies to support recovery of rare plant populations (Menges 2008; Weeks et al 2011; Maschinski and Albrecht 2017; Nooten and Hughes 2017; Volis et al 2019; Massatti et al 2020). Numerous studies have shown that a mixed seed source approach to translocations can improve genetic diversity within sites, which may lead to improved evolutionary fitness within populations (Vergeer et al 2005; Maschinski et al 2013; Prati et al 2016; Shemesh et al 2018; Schäfer et al 2020; St. Clair et al 2020; Van Rossum et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Extremely Low Levels of Genetic Variation and Predicted Shifts in Suitable Niche Space for a Geographically Disjunct, Federally Endangered Legume, Leafy Prairie-Clover (Dalea foliosa)

Morris

Visger

Watkins³

et al. 2023

Castanea

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Taxa with geographically disjunct distributions and that are endemic or narrowly endemic face the real and immediate threat of local extinction because of inbreeding depression, genetic drift, and environmental stochasticity. These threats are amplified by the predicted changes in climate anticipated within the next 50 years, pointing to the increasing need for population genetic data and translocation experiments to track long-term evolutionary potential in rare plant species. In this study, we assessed population genetic structure within and among natural, augmented, and introduced populations of leafy prairie-clover (Dalea foliosa; Fabaceae) in a geographically disjunct region of the species range (i.e., Illinois) and predicted future potential changes in climate within the study region. Using six novel nuclear microsatellite loci to survey nine populations from Illinois and two from Tennessee, we found extremely limited genetic diversity and no structure among populations within Illinois, with greater genetic diversity within and between populations in Tennessee. Using future climate visualizations, we predict the Illinois portion of the species range will be warmer and wetter within the next 50 years, potentially increasing competition for D. foliosa habitat through woody encroachment. When considered together, these concerns point to the need to prioritize actions that will improve our understanding of the implications of translocations across geographically disjunct regions within the species range.

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Section: Introductionmentioning

confidence: 99%

Extremely Low Levels of Genetic Variation and Predicted Shifts in Suitable Niche Space for a Geographically Disjunct, Federally Endangered Legume, Leafy Prairie-Clover (Dalea foliosa)

Morris

Visger

Watkins³

et al. 2023

Castanea

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“…Thus, in addition to understanding the genetic diversity of the endangered plants, it is important to explore the factors shaping their genetic diversity. Furthermore, the lack of such information may also pose a range of genetic risks to the endangered plants being protected, including genetic drift, decline due to inbreeding, and reduced or absent adaptability (Havens et al, 2004; Shemesh et al, 2018). These risks may be more pronounced specifically when considering wild reintroduction following ex situ conservation (Kang et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Genome‐wide diversity evaluation and core germplasm extraction in ex situ conservation: A case of golden Camellia tunghinensis

Zhu,

Zou,

Qin

et al. 2023

Evolutionary Applications

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Whether ex situ populations constructed in the limited nursery resources of botanical gardens can preserve enough genetic diversity of endangered plants in the wild remains uncertain. Here, a case study was conducted with Camellia tunghinensis, which is one of the species with the lowest natural distribution area in the sect. Chrysantha (golden camellia) of the family Theaceae. We investigated the genetic diversity and population structure of 229 samples from wild and ex situ populations using genotyping by sequencing (GBS). Core germplasm was constructed from these samples. The results showed that wild C. tunghinensis exhibited high genetic diversity, with observed heterozygosity of 0.257–0.293 and expected heterozygosity of 0.247–0.262. Compared with wild populations, the genetic diversity of ex situ populations established by transplanting wild seedlings was close to or even higher. However, the genetic diversity of those established by seed or cuttings of a few superior trees was lower. The Admixture analysis revealed that the structure of the ex situ populations derived from seeds and cuttings was relatively simple compared with the ex situ populations derived from transplanted wild seedlings and wild populations. These results suggested that direct transplanting of wild seedlings was more conducive to preserving the genetic diversity of endangered plants in the wild. In addition, wild populations demonstrated a small differentiation (mean FST = 0.044) among themselves, possibly due to long‐term and frequent gene flow between the wild populations. In contrast, moderate differentiation (mean FST > 0.05) was detected among ex situ populations and between ex situ and wild populations. This may be the combined result of the absence of gene flow pathways and strong selection pressure in various ex situ environments. Finally, 77 core germplasms were extracted from 229, likely representing the genetic diversity of C. tunghinensis. This study provides future strategies for the ex situ conservation and management of the golden camellia species and other rare and endangered plants.

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Genetic variation and structure in natural and reintroduced populations of the endangered legume, Pyne’s ground plum (Astragalus bibullatus)

et al. 2021

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To mix or not to mix the sources of relocated plants? The case of the endangered Iris lortetii

Cited by 7 publications

References 47 publications

Extremely Low Levels of Genetic Variation and Predicted Shifts in Suitable Niche Space for a Geographically Disjunct, Federally Endangered Legume, Leafy Prairie-Clover (Dalea foliosa)

Extremely Low Levels of Genetic Variation and Predicted Shifts in Suitable Niche Space for a Geographically Disjunct, Federally Endangered Legume, Leafy Prairie-Clover (Dalea foliosa)

Genome‐wide diversity evaluation and core germplasm extraction in ex situ conservation: A case of golden Camellia tunghinensis

Genetic variation and structure in natural and reintroduced populations of the endangered legume, Pyne’s ground plum (Astragalus bibullatus)

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