Single nucleotide polymorphisms in a cellulose synthase gene (PtoCesA3) are associated with growth and wood properties in Populus tomentosa
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- 作者：Baohua Xu (1) (2)
Jiaxing Tian (1) (2)
Qingzhang Du (1) (2)
Chenrui Gong (1) (2)
Wei Pan (1) (2)
Deqiang Zhang (1) (2) - 关键词：Association genetics ; Cellulose synthase ; Populus ; Primary cell wall ; Single nucleotide polymorphism ; Validation population ; Wood properties
- 刊名：Planta
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：240
- 期：6
- 页码：1269-1286
- 全文大小：880 KB
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Jiaxing Tian (1) (2)
Qingzhang Du (1) (2)
Chenrui Gong (1) (2)
Wei Pan (1) (2)
Deqiang Zhang (1) (2)
1. National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, No. 35, Qinghua East Road, Beijing, 100083, People’s Republic of China
2. Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, People’s Republic of China - ISSN：1432-2048
文摘
In plants, the composition and organization of the cell wall determine cell shape, enable cell expansion, and affect the properties of woody tissues. Cellulose synthase (CesA) genes encode the enzymes involved in the synthesis of cellulose which is the major component of plant primary and secondary cell walls. Here, we isolated a full-length PtoCesA3 cDNA from the stem cambium tissue of Populus tomentosa. Tissue-specific expression profiling showed that PtoCesA3 is highly expressed during primary cell wall formation. Estimation of single nucleotide polymorphism (SNP) diversity and linkage disequilibrium (LD) revealed that PtoCesA3 harbors high SNP diversity (π T?=?0.00995 and θ w?=?0.0102) and low LD (r 2?≥?.1, within 1,280?bp). Association analysis in a P. tomentosa association population (460 individuals) showed that seven SNPs (false discovery rate Q?Q?PtoCesA3 and examining its allelic polymorphisms using association studies open an avenue to understand the mechanism of cellulose synthesis in the primary cell wall and its effects on the properties of woody tissues.