Contribution of abscisic acid to aromatic volatiles in cherry tomato (Solanum lycopersicum L.) fruit during postharvest ripening

被引：60

作者：

Wu, Qiong ^{[1
]}

Tao, Xiaoya ^{[1
]}

Ai, Xinzi ^{[1
]}

Luo, Zisheng ^{[1
]}

Mao, Linchun ^{[1
]}

Ying, Tiejin ^{[1
]}

Li, Li ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Biosyst Engn & Food Sci, Agr Minist Postharvest Handling Agroprod, Fuli Inst Food Sci,Zhejiang Key Lab Agrofood Proc, Hangzhou 310058, Zhejiang, Peoples R China

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2018年 / 130卷

关键词：

Tomato fruit; Abscisic acid; Aromatic volatiles; Fatty acids; Carotenoids; Phenolics; Branched-chain amino acids; TRIGGERING ETHYLENE BIOSYNTHESIS; GENE-EXPRESSION; AMINO-ACIDS; FLAVOR; CHAIN; BIOCHEMISTRY; SUPPRESSION; METABOLISM; CATABOLISM; PROTEINS;

D O I：

10.1016/j.plaphy.2018.06.039

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Fruit aroma development depends on ripening. Abscisic acid (ABA) has been reported to be involved in the regulation of tomato fruit ripening. In the present study, the effects of exogenous ABA on aromatic volatiles in tomato fruit during postharvest ripening were studied. The results showed that exogenous ABA accelerated color development and ethylene production as well as the accumulation of carotenoids, total phenolics and linoleic acid in tomato fruit during ripening. Moreover, exogenous ABA increased the accumulation of volatile compounds such as 1-peten-3-one (2.06-fold), beta-damascenone (1.64-fold), benzaldehyde (3.29-fold) and benzyl cyanide (4.15-fold); induced the expression of key genes implicated in the biosynthesis pathways of aromatic volatiles, including TomloxC, HPL, ADH2, LeCCD1B and SIBCAT1 (the values of the log(2) fold changes ranged from -3.02 to 2.97); and promoted the activities of lipoxygenase (LOX), hydroperoxide lyase (HPL) and alcohol dehydrogenase (ADH). In addition, the results of promoter analyses revealed that cis-acting elements involved in ABA responsiveness (ABREs) exist in 8 of the 12 key genes involved in volatile biosynthesis, suggesting that ABA potentially affects aromatic volatile emissions via the regulation of gene expression profiles.

引用

页码：205 / 214

页数：10

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