The MdFAD27 and MdFAD28 play critical roles in the development of greasiness disorder in postharvest apples
文献类型： 外文期刊
作者： Jiang, Zitao 1 ; Ding, Yuduan 1 ; Liu, Jia 2 ; Yin, Weijie 1 ; Qi, Yingwei 3 ; Yang, Yanqing 4 ; Ren, Xiaolin 1 ;
作者机构： 1.Northwest A&F Univ, Coll Hort, Yangling 712100, Shaanxi, Peoples R China
2.China Acad Chinese Med Sci, Inst Chinese Mat Med, Beijing 100700, Peoples R China
3.Guangdong Acad Agr Sci, Inst Sericultural & Agrifood Res, Guangzhou 510642, Guangdong, Peoples R China
4.Ludong Univ, Coll Food Engn, Yantai 264025, Shandong, Peoples R China
关键词： Malus domestica; Greasiness disorder; FAD; ?Golden Delicious?
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）
ISSN： 0925-5214
年卷期： 2022 年 191 卷
页码：
收录情况： SCI
摘要： The apple greasiness disorder can seriously affect the quality of appearance and commercial value. However, the complex molecular mechanism of fatty acid desaturases (FADs) in greasiness disorder has not been explored. In this study, greasiness disorder of susceptible cultivar 'Golden Delicious' apples could be characterized by comprehensive evaluation system: At the physiological level, the disorder was associated with high level of the greasiness score, the respiration rate, ethylene release and the MDA content; At the morphological level, it caused the epidermal wax crystals disappeared with the appearance of a liquid wax form of the pericarp; At the metabolic level, it increased the liquid greasiness components and contents. As the MdFADs, induced by the greasiness esters, were key genes in the greasiness disorder process, and MdFAD27 and MdFAD28 were obtained by analyzing their family members at transcriptomic level during postharvest storage. Furthermore, the results from both homologous overexpression in apples and heterologous overexpression in tomatoes indicated that MdFAD27 and MdFAD28 were involved in the formation of the main substrate of greasiness esters and the phenotype of greasiness disorder. Collectively, this study shows that MdFAD27 and MdFAD28 influence the development of greasiness disorder in apples by promoting the production of greasiness components.
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