A Comparative Study on Postharvest Cold Tolerance in Salicylic Acid-Deficient Mutant (NahG) and Wild-Type Tomato Fruits

doi:10.7506/spkx1002-6630-20210104-038

FOOD SCIENCE ›› 2022, Vol. 43 ›› Issue (5): 203-209.doi: 10.7506/spkx1002-6630-20210104-038

• Packaging & Storage • Previous Articles Next Articles

A Comparative Study on Postharvest Cold Tolerance in Salicylic Acid-Deficient Mutant (NahG) and Wild-Type Tomato Fruits

DING Yang, ZHAO Ruirui, SUN Cunyi, SHEN Lin, SHENG Jiping

(1. Key Laboratory of Logistics System and Technology of Beijing, School of Logistics, Beijing Wuzi University, Beijing 101149, China; 2. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; 3. School of Agricultural Economics and Rural Development, Renmin University of China, Beijing 100872, China)

Published:2022-03-28

Abstract

Abstract: In this study, postharvest salicylic acid (SA)-deficient mutant (NahG) and wild-type (WT) tomato fruits were stored at 4 ℃ for up to 28 days. Chilling injury symptoms were observed, and chilling injury index, the activities of phospholipase C (PLC), phospholipase D (PLD), lipoxygenase (LOX), polygalacturonase (PG) and cellulase, and the contents of proline, lignin, cellulose, total phenols and catechinic in the fruits were measured during the storage period. Compared with the WT fruit, chilling injury index and the activities of PLC, PLD, LOX, PG and cellulase in the NahG fruit were lower, whereas the contents of proline, lignin, cellulose, total phenols and catechinic were higher. These results suggest that the degradation of cell membrane and cell wall is alleviated and the contents of cold tolerance-related compounds are increased in the NahG fruit. Therefore, it had stronger cold tolerance than the WT fruit.

Key words: tomato fruit; salicylic acid; postharvest; cold tolerance

CLC Number:

TS255.36

DING Yang, ZHAO Ruirui, SUN Cunyi, SHEN Lin, SHENG Jiping. A Comparative Study on Postharvest Cold Tolerance in Salicylic Acid-Deficient Mutant (NahG) and Wild-Type Tomato Fruits[J]. FOOD SCIENCE, 2022, 43(5): 203-209.

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A Comparative Study on Postharvest Cold Tolerance in Salicylic Acid-Deficient Mutant (NahG) and Wild-Type Tomato Fruits

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