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Open AccessArticle

SLAF-seq Uncovers the Genetic Diversity and Adaptation of Chinese Elm (Ulmus parvifolia) in Eastern China

Jiangsu Academy of Forestry, Nanjing 211153, China
Author to whom correspondence should be addressed.
Forests 2020, 11(1), 80;
Received: 25 November 2019 / Revised: 3 January 2020 / Accepted: 7 January 2020 / Published: 9 January 2020
(This article belongs to the Special Issue Forest Genetics and Tree Improvement)
The Chinese elm is an important tree ecologically; however, little is known about its genetic diversity and adaptation mechanisms. In this study, a total of 107 individuals collected from seven natural populations in eastern China were investigated by specific locus amplified fragment sequencing (SLAF-seq). Based on the single nucleotide polymorphisms (SNPs) detected by SLAF-seq, genetic diversity and markers associated with climate variables were identified. All seven populations showed medium genetic diversity, with PIC values ranging from 0.2632 to 0.2761. AMOVA and Fst indicated that a low genetic differentiation existed among populations. Environmental association analyses with three climate variables (annual rainfall, annual average temperature, and altitude) resulted in, altogether, 43 and 30 putative adaptive loci by Bayenv2 and LFMM, respectively. Five adaptive genes were annotated, which were related to the functions of glycosylation, peroxisome synthesis, nucleic acid metabolism, energy metabolism, and signaling. This study was the first on the genetic diversity and local adaptation in Chinese elms, and the results will be helpful in future work on molecular breeding. View Full-Text
Keywords: Chinese elm; genetic diversity; adaptation; SLAF-seq; SNP loci Chinese elm; genetic diversity; adaptation; SLAF-seq; SNP loci
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Lyu, Y.-Z.; Dong, X.-Y.; Huang, L.-B.; Zheng, J.-W.; He, X.-D.; Sun, H.-N.; Jiang, Z.-P. SLAF-seq Uncovers the Genetic Diversity and Adaptation of Chinese Elm (Ulmus parvifolia) in Eastern China. Forests 2020, 11, 80.

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