The semidominant mutation w5 impairs epicuticular wax deposition in common wheat (Triticum aestivum L.)
文献类型： 外文期刊
作者： Li, Linghong 1 ; Qi, Zhongqi 1 ; Chai, Lingling 1 ; Chen, Zhaoyan 1 ; Wang, Tianya 3 ; Zhang, Mingyi 4 ; You, Mingshan 1 ;
作者机构： 1.China Agr Univ, Key Lab Crop Heterosis & Utilizat, State Key Lab Agrobiotechnol,Beijing Municipal, Key Lab Crop Genet Improvement,Minist Educ, Beijing 100193, Peoples R China
2.Natl Plant Gene Res Ctr, Beijing 100193, Peoples R China
3.Northeast Normal Univ, Key Lab Mol Epigenet, Minist Educ MOE, Changchun 130024, Peoples R China
4.Shanxi Acad Agr Sci, Dryland Agr Res Ctr, Taiyuan 030031, Peoples R China
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期： 2020 年 133 卷 4 期
页码：
收录情况： SCI
摘要： Key message The semidominant EMS-induced mutant w5 affects epicuticular wax deposition and mapped to an approximately 194-kb region on chromosome 7DL. Epicuticular wax is responsible for the glaucous appearance of plants and protects against many biotic and abiotic stresses. In wheat (Triticum aestivum L.), beta-diketone is a major component of epicuticular wax in adult plants and contributes to the glaucousness of the aerial organs. In the present study, we identified an ethyl methanesulfonate-induced epicuticular wax-deficient mutant from the elite wheat cultivar Jimai22. Compared to wild-type Jimai22, the mutant lacked beta-diketone and failed to form the glaucous coating on all aerial organs. The mutant also had significantly increased in cuticle permeability, based on water loss and chlorophyll efflux. Genetic analysis indicated that the mutant phenotype is controlled by a single, semidominant gene on the long arm of chromosome 7D, which was not allelic to the known wax gene loci W1-W4, and was therefore designated W5. W5 was finely mapped to an ~ 194-kb region (flanked by the molecular markers SSR2 and STARP11) that harbored four annotated genes according to the reference genome of Chinese Spring (RefSeq v1.0). Collectively, these data will broaden the knowledge of the genetic basis underlying epicuticular wax deposition in wheat.
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