文献类型：期刊文献

英文题名：Exogenous ABA promotes aroma biosynthesis of postharvest kiwifruit after low-temperature storage

作者：Han, Xueyuan[1];Wang, Xiaoyu[1];Shen, Chi[1];Mo, Yiwei[1];Tian, Rungang[1];Mao, Linchun[2];Luo, Zisheng[2];Yang, Huanyi[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Univ, Zhejiang Key Lab Agrofood Proc, Coll Biosyst Engn & Food Sci, Minist Agr & Rural Affairs,Key Lab Agroprod Posth, Hangzhou 310058, Peoples R China

年份：2022

卷号：255

期号：4

外文期刊名：PLANTA

收录：SCI-EXPANDED(收录号：WOS:000765777800001)、、Scopus(收录号：2-s2.0-85125974011)、WOS

基金：All authors whose names appear in the paper have contributed sufficiently to this work. This work was supported by the General program of the Education Department of Zhejiang Province (Y202044419) and Public Welfare Project of Science and Technology Department of Zhejiang Province (LGN20C150004, LGN19C13003).

语种：英文

外文关键词：Aroma components; Enzyme activity; Gene expression; Kiwifruit; Low-temperature storage

外文摘要：Main conclusion Exogenous ABA played a positive role in the accumulation and biosynthesis of aroma components of postharvest kiwifruit after low-temperature storage, especially the esters production during ripening. Low-temperature storage (LTS) generally affects the aroma formation associated with the decrease in aroma quality in kiwifruit. In this work, abscisic acid (ABA) treatment after LTS increased the production of aroma components in postharvest kiwifruit and enhanced the related enzyme activity, especially alcohol acyltransferase (AAT), branched amino acid transaminase (BCAT) and hydroperoxide lyase (HPL). Corresponding to the enzyme activity, the gene expression of AchnAAT, AchnADH, AchnBCAT and AchnHPL was significantly up-regulated by ABA. The principal component analysis further illustrated the differences in aroma components between ABA and the control. The positive correlation of aroma accumulation with the expression levels of AchnPDC and AchnLOX and the enzyme activities of BCAT and pyruvate decarboxylase (PDC) was also revealed by correlation analysis. In addition, the promoter sequences of the key genes involved in aroma biosynthesis contained multiple cis-elements (ABRE and G-box) of ABA-responsive proteins. Combining the transcriptome sequencing data, the promoting role of ABA signaling in the regulation of aroma biosynthesis of postharvest kiwifruit after LTS was discussed. This study would provide a reference for improving aroma quality of postharvest kiwifruit after LTS, as well the molecular mechanism of kiwifruit aroma fading after LTS.