Postharvest temperature influences volatile lactone production via regulation of acyl-CoA oxidases in peach fruit

被引:78
作者
Xi, Wan-Peng [1 ,2 ]
Zhang, Bo [1 ]
Liang, Li [1 ,3 ]
Shen, Ji-Yuan [1 ]
Wei, Wen-Wen [1 ]
Xu, Chang-Jie [1 ]
Allan, Andrew C. [4 ]
Ferguson, Ian B. [4 ]
Chen, Kun-Song [1 ]
机构
[1] Zhejiang Univ, Lab Fruit Qual Biol, State Agr Minist Lab Hort Plant Growth Dev & Qual, Hangzhou 310058, Zhejiang, Peoples R China
[2] Shihezi Univ, Coll Agr, Shihezi 832003, Xin Jiang, Peoples R China
[3] Wenzhou Univ, Coll Life & Environm Sci, Wenzhou 325027, Zhejiang, Peoples R China
[4] New Zealand Inst Plant & Food Res, Auckland, New Zealand
关键词
ACX; aroma; chilling injury; ripen; REAL-TIME PCR; BETA-OXIDATION; CHILLING INJURY; RIPENING KIWIFRUIT; GENE-EXPRESSION; ARABIDOPSIS; BIOSYNTHESIS; SENESCENCE; NECTARINE; ETHYLENE;
D O I
10.1111/j.1365-3040.2011.02433.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The biosynthesis of volatile compounds in plants is affected by environmental conditions. Lactones are considered to be peach-like aroma volatiles; however, no enzymes or genes associated with their biosynthesis have been characterized. White-fleshed (cv. Hujingmilu) and yellow-fleshed (cv. Jinxiu) melting peach (Prunus persica L. Batsch) fruit were used as materials in two successive seasons and responses measured to four different temperature treatments. Five major lactones accumulated during postharvest peach fruit ripening at 20 degrees C. Peach fruit at 5 degrees C, which induces chilling injury (CI), had the lowest lactone content during subsequent shelf life after removal, while 0 degrees C and a low-temperature conditioning (LTC) treatment alleviated development of CI and maintained significantly higher lactone contents. Expression of PpACX1 and activity of acyl-CoA oxidase (ACX) with C16-CoA tended to increase during postharvest ripening both at 20 degrees C and during shelf life after removal from cold storage when no CI was developed. There was a positive correlation between ACX and lactones in peach fruit postharvest. Changes in lactone production in response to temperatures are suggested to be a consequence of altered expression of PpACX1 and long-chain ACX activity.
引用
收藏
页码:534 / 545
页数:12
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