MdHAL3, a 4 '-phosphopantothenoylcysteine decarboxylase, is involved in the salt tolerance of autotetraploid apple

文献类型： 外文期刊

第一作者： Yang, Shuang

作者： Yang, Shuang;Zhang, Feng;Wang, Yangshu;Xue, Hao;Jiang, Qiu;Shi, Jiajun;Dai, Hongyan;Zhang, Zhihong;Ma, Yue;Zhang, Feng;Li, Linguang;He, Ping;Li, Yuanyuan

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关键词： Apple; MdHAL3; 4 '-phosphopantothenoylcysteine decarboxylase (PPCDC); Salt stress; Coenzyme A (CoA)

期刊名称：PLANT CELL REPORTS （ 影响因子：4.57； 五年影响因子：4.463 ）

ISSN： 0721-7714

年卷期： 2020 年 39 卷 11 期

页码：

收录情况： SCI

摘要： Apple (Malus x domestica) is the most widely planted fruit tree species worldwide. However, the growth and development of apple have been increasingly affected by abiotic stress, such as high salinity. In our previous study, RNA sequencing (RNA-seq) analysis revealed that the expression level of theMdHAL3gene was significantly upregulated in the autotetraploid apple cultivar Hanfu. In the present study, we first isolatedHAL3, whose product was shown to exert 4 '-phosphopantothenoylcysteine decarboxylase (PPCDC) activity, from apple.MdHAL3was expressed in all organs of apple, and its expression was rapidly induced by salt stress. The MdHAL3 protein was localized to the cytomembrane and cytoplasm. FiveMdHAL3overexpression (OE) lines and fiveMdHAL3-RNAi apple lines were obtained. We found thatMdHAL3enhanced the salt stress tolerance of apple and that the OE plants rooted more easily than the wild-type (WT) plants. The coenzyme A (CoA) content in the leaves of the OE plants was greater than that in the leaves of the WT plants, and the CoA content in theMdHAL3-RNAi plants was lower than that in the WT plants. Taken together, our findings indicate thatMdHAL3plays an essential role in the response to salt stress in apple.

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