Spatial genetic and epigenetic structure of Thlaspi arvense (field pennycress) in China
Affiliation
Yunnan UniversityOxford University
Shanxi University
University of Bedfordshire
Yunnan University of Chinese Medicine
Issue Date
2020-11-11
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(Received 13 May 2020, accepted 15 July 2020; J-STAGE Advance published date: 11 November 2020) Thlaspi arvense (field pennycress) is widespread in temperate regions of the northern hemisphere. We estimated the genetic and epigenetic structure of eight T. arvense populations (131 individuals) in China using amplified fragment length polymorphism and methylation-sensitive amplified polymorphism molecularmarker techniques. We detected low diversity at both genetic (mean = 0.03; total = 0.07) and epigenetic (mean = 0.04; total = 0.07) levels, while significant genetic (FST = 0.42, P < 0.001) and epigenetic (FST = 0.32, P < 0.001) divergence was found across the distribution range. Using Mantel testing, we found spatial genetic and epigenetic differentiation, consistent with isolation-by-distance models. We also identified a strong correlation between genetic and epigenetic differentiation (r = 0.7438, P < 0.001), suggesting genetic control of the epigenetic variation. Our results indicate that mating system, natural selection and gene flow events jointly structure spatial patterns of genetic and epigenetic variation. Moreover, epigenetic variation may serve as a basis of natural selection and ecological evolution to enable species to adapt to heterogeneous habitats. Our study provides novel clues for the adaptation of T. arvense.Citation
Guan Y, Qu P, Lu S, Crabbe MJC, Zhang T, Geng Y (2020) 'Spatial genetic and epigenetic structure of Thlaspi arvense (field pennycress) in China', GENES & GENETIC SYSTEMS, 95 (), pp.1-10.Publisher
Genetics Society of JapanJournal
GENES & GENETIC SYSTEMSType
ArticleLanguage
enISSN
1341-7568EISSN
1880-5779Sponsors
This work was supported by the National Natural Science Foundation of China (31660057, 31770408, 32060059, 32060237).ae974a485f413a2113503eed53cd6c53
10.1266/ggs.20-00025
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