生物
脱落酸
非生物胁迫
猕猴桃
采后
转录组
异位表达
非生物成分
渗透性休克
植物
过氧化氢酶
猕猴桃
细胞生物学
基因表达
基因
生物化学
氧化应激
古生物学
作者
Mijing Jin,Sufu Gan,Jian Jiao,Yiheng He,Hui Liu,Yin X,Qingsen Zhu,Jingping Rao
出处
期刊:Plant Science
[Elsevier]
日期:2021-07-01
卷期号:308: 110927-110927
被引量:16
标识
DOI:10.1016/j.plantsci.2021.110927
摘要
Chilling injury (CI) is a barrier to the refrigeration of kiwifruit, resulting in decreased fruit quality and increased nutrient loss during storage. Understanding the molecular basis underlying the cold response and its regulation in refrigerated kiwifruit is therefore highly important. Basic (region) leucine zipper (bZIP) transcription factors (TFs) have been widely studied for their roles in abiotic stress resistance in various species. In this study, we identified 81 bZIP family proteins in kiwifruit and classified them into 11 groups. Further transcriptome analysis revealed that the expression of members of the AREB/ABF family was strongly induced by low temperature and abscisic acid (ABA). Ectopic expression of AchnABF1 enhanced plant cold tolerance by upregulating the expression of several key genes associated with ABA-dependent and ABA-independent pathways in Arabidopsis thaliana. Reactive oxygen species (ROS) metabolism was suggested to be involved in the AchnABF1-mediated osmotic stress response. For instance, enhanced ROS-scavenging ability was observed in transgenic plants with enhanced activity of catalase (CAT) and peroxidase (POD), which resulted in decreased in situ O2.− and H2O2 accumulation, ion leakage, and malondialdehyde (MDA) content under various abiotic stresses. In addition, AchnABF1 also participated in the osmotic stress response during both the germination and postgermination stages. We concluded that AchnABF1 may play an important role in kiwifruit during refrigeration.
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