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Characterization of Organic Acid Metabolism and Expression of Related Genes During Fruit Development of Actinidia eriantha 'Ganmi 6'.

Characterization of Organic Acid Metabolism and Expression of Related Genes During Fruit Development of Actinidia eriantha 'Ganmi 6'.

Authors :
Jiang, Zhiqiang
Huang, Qing
Jia, Dongfeng
Zhong, Min
Tao, Junjie
Liao, Guanglian
Huang, Chunhui
Xu, Xiaobiao
Source :
Plants (2223-7747); Mar2020, Vol. 9 Issue 3, p332, 1p
Publication Year :
2020

Abstract

Studies on organic acid metabolism have been mainly concentrated on the fruit, whereas, few have focused on the mechanism of high organic acids content in the fruit of Actinidia eriantha. Fruits of 'Ganmi 6' harvested at eleven developmental periods were used as materials. The components and content of organic acids were determined by high-performance liquid chromatography (HPLC) system, the activities of the related enzyme were detected, and gene expression levels were measured by quantitative real-time PCR (qRT-PCR). Components of ascorbic acid (AsA) and eight kinds of organic acids were detected. These results showed that quinic acid and citric acid were the main organic acids in the fruit of 'Ganmi 6'. Correlation analysis showed that NADP-Quinate dehydrogenase (NADP-QDH), NADP-Shikimate dehydrogenase (NADP-SDH), and Cyt-Aconitase (Cyt-Aco) may be involved in regulating organic acids biosynthesis. Meanwhile, the SDH gene may play an important role in regulating the accumulation of citric acid. In this study, the activities of NADP-SDH, Mit-Aconitase (Mit-Aco), and NAD-Isocitrate dehydrogenase (NAD-IDH) were regulated by their corresponding genes at the transcriptional level. The activity of Citrate synthase (CS) may be affected by post-translational modification. Our results provided new insight into the characteristics of organic acid metabolism in the fruit of A. eriantha. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22237747
Volume :
9
Issue :
3
Database :
Complementary Index
Journal :
Plants (2223-7747)
Publication Type :
Academic Journal
Accession number :
142496744
Full Text :
https://doi.org/10.3390/plants9030332