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- Title
Spatial genetic and epigenetic structure of Thlaspi arvense (field pennycress) in China.
- Authors
Yabin Guan; Peng Qu; Shugang Lu; Crabbe, M. James C.; Ticao Zhang; Yupeng Geng
- Abstract
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.
- Subjects
CHINA; AMPLIFIED fragment length polymorphism; EPIGENETICS; NATURAL selection; GENE flow; GENETIC correlations
- Publication
Genes & Genetic Systems, 2020, Vol 95, Issue 5, p225
- ISSN
1341-7568
- Publication type
Article
- DOI
10.1266/ggs.20-00025