High genetic diversity and weak population structure of Rhododendron jinggangshanicum, a threatened endemic species in Mount Jinggangshan of China

Li, Mingwan; Chen, Sufang; Shi, Shi; Zhang, Zhong; Liao, Wenbo; Wu, Wei; Zhou, Renchao; Fan, Qingxia

doi:10.1016/j.bse.2014.12.008

Cited by 19 publications

(17 citation statements)

References 25 publications

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“…Previous studies have demonstrated that the habitat types or local environment conditions have a significant influence on the genetic diversity and population structure in some plant species, such as Ranunculus acris 56, Paris quadrifolia 57, Rhododendron jinggangshanicum 58 and Tamarix chinensis 59. In this study, the Pop1-Pop7 genets were sampled around Kubuqi desert or Mu Us Sandland with typical arid desert habitats, whilst the Pop8 genets were sampled around Haba Lake with wetland habitats.…”

Section: Discussionmentioning

confidence: 99%

De novo transcriptome assembly, development of EST-SSR markers and population genetic analyses for the desert biomass willow, Salix psammophila

Jia

Yang

Sun

et al. 2016

Sci Rep

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Salix psammophila, a sandy shrub known as desert willow, is regarded as a potential biomass feedstock and plays an important role in maintaining local ecosystems. However, a lack of genomic data and efficient molecular markers limit the study of its population evolution and genetic breeding. In this study, chromosome counts, flow cytometry and SSR analyses indicated that S. psammophila is tetraploid. A total of 6,346 EST-SSRs were detected based on 71,458 de novo assembled unigenes from transcriptome data. Twenty-seven EST-SSR markers were developed to evaluate the genetic diversity and population structure of S. psammophila from eight natural populations in Northern China. High levels of genetic diversity (mean 10.63 alleles per locus; mean HE 0.689) were dectected in S. psammophila. The weak population structure and little genetic differentiation (pairwise FST = 0.006–0.016) were found among Population 1-Population 7 (Pop1-Pop7; Inner Mongolia and Shaanxi), but Pop8 (Ningxia) was clearly separated from Pop1-Pop7 and moderate differentiation (pairwise FST = 0.045–0.055) was detected between them, which may be influenced by local habitat conditions. Molecular variance analyses indicated that most of the genetic variation (94.27%) existed within populations. These results provide valuable genetic informations for natural resource conservation and breeding programme optimisation of S. psammophila.

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Section: Discussionmentioning

confidence: 99%

De novo transcriptome assembly, development of EST-SSR markers and population genetic analyses for the desert biomass willow, Salix psammophila

Jia

Yang

Sun

et al. 2016

Sci Rep

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“…Furthermore, the high genetic exchanges we observed across geographical populations were consistent with low pairwise differences among populations, supporting Li et al . 's () argument that high genetic diversity may correspond to weak population structure. Compared with other organisms, birds usually have a lower genetic structure due to their capacity for flight and movements over longer distances (Zink et al .…”

Section: Discussionmentioning

confidence: 99%

Gene flow from multiple sources maintains high genetic diversity and stable population history of Common Moorhen Gallinula chloropus in China

Ruan

Han

et al. 2018

Ibis

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In this study, we used mitochondrial control sequences and microsatellite data from 231 Common Moorhen Gallinula chloropus individuals sampled from 19 sites in China to analyse their genetic structure and evolutionary history. High genetic diversity was found for all populations, although microsatellite analysis showed that the genetic diversity in non‐migratory populations was significantly higher than in migratory populations. High gene flow occurred between neighbouring populations, although long‐distance gene flow also occurred. The Huazhong population was the single greatest genetic source for other populations. High gene flow probably led to the shallow genetic structure that we observed. Demographic expansion was found in migratory populations, non‐migratory populations and with all individuals combined. The expansion time for all populations combined was estimated to be 221 000 years ago. The Common Moorhen population grew rapidly during the interglacial before the last glacial maximum (LGM), then remained generally stable from the LGM to the present.

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“…Moreover, H E is rarely affected by sample size (Frankham et al 2002). (Li et al 2015), but slightly lower than that of R. decorum (H E : 0.758 ± 0.048) (Wang et al 2013a). Apart from natural hybridization, the complex landscape of the Dabie Mountains and humaninduced fragmentation of the natural habitat might also lead to the significant pairwise population differentiation and high genetic diversity.…”

Section: Discussionmentioning

confidence: 90%

“…Species of the genus Rhododendron, one of the most valuable and largest genera of woody plants, are dominant shrubs with frequently narrow distribution in their natural habitats, whose current conservation status need attention (Li et al 2015). However, there are only a few studies of genetic diversity in Rhododendron species carried out with microsatellite markers (Liu et al 2012, Song et al 2012, Sharma et al 2014, Wu et al 2014b, Wang et al 2016.…”

Section: Discussionmentioning

confidence: 99%

“…EST-SSRs, are highly useful for gene targeting, markerassisted breeding, and QTL mapping because of potential linkage with transcriptional regions of known function, and low cost of development (Zheng et al 2013, Wu et al 2014a). SSR markers have been isolated and used for genetic diversity analysis in several Rhododendron species, such as R. jinggangshanicum (Li et al 2015), R. ferrugineum (Delmas et al 2011, Charrier et al 2013, R. aureum (Kwak et al 2015), R. brachycarpum (Kwak et al 2015), R. protistum (Wu et al 2017), and R. ripense (Kondo et al 2009). For R. simsii, a limited set of SSR markers have been developed (Tan et al 2009, Wang et al 2017.…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity and population structure of Rhododendron simsii (Ericaceae) as revealed by microsatellite markers

Wang

Jin

YanYan

et al. 2019

Nordic Journal of Botany

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Rhododendron simsii Planch. (Ericaceae) is a valuable horticultural and medicinal plant species. In this study, the genetic diversity of eight wild R. simsii populations from the Dabie Mountains (central China) was investigated with 29 microsatellite markers. The results showed that R. simsii harbored a high level of genetic diversity (HE: 0.64–0.79; HO: 0.71–0.94; I = 1.917; h = 0.826), and 84.34% of this genetic variation was maintained within populations, while variation among populations only accounted for 15.66%. The number of alleles ranged from 6 to 11, with an average of 9.069. Heterozygote excess was found, with the mean FIS and FIT values of −0.1739 and 0.0092, respectively. The average value of gene flow (Nm) was 1.3525. Within‐population, genetic diversity (I) ranged from 1.131 to 1.681. Cluster analyses divided the eight populations into two clades: the ‘Ltjiuzihe’ population formed its own cluster, while the other seven populations clustered together. There was a weak negative correlation between genetic and geographic distance. The results are highly relevant for the conservation and sustainable utilization of wild R. simsii germplasm resources in central China.

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High genetic diversity and weak population structure of Rhododendron jinggangshanicum, a threatened endemic species in Mount Jinggangshan of China

Cited by 19 publications

References 25 publications

De novo transcriptome assembly, development of EST-SSR markers and population genetic analyses for the desert biomass willow, Salix psammophila

De novo transcriptome assembly, development of EST-SSR markers and population genetic analyses for the desert biomass willow, Salix psammophila

Gene flow from multiple sources maintains high genetic diversity and stable population history of Common Moorhen Gallinula chloropus in China

Genetic diversity and population structure of Rhododendron simsii (Ericaceae) as revealed by microsatellite markers

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