期刊
BIOMOLECULES
卷 13, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/biom13101540
关键词
post-harvest; shelf life; dark-induced leaf senescence; nitrogen remobilization; storage temperature; Pak Choi; leafy vegetables
The storage temperature has a significant impact on leaf senescence, nitrogen assimilation, and remobilization in Pak Choi. A temperature of 4 degrees C delays chlorophyll degradation and senescence, and the total nitrogen and protein content are inversely correlated. Key candidate genes related to nitrogen assimilation and remobilization have been identified.
In the agricultural industry, the post-harvest leafy vegetable quality and shelf life significantly influence market value and consumer acceptability. This study examined the effects of different storage temperatures on leaf senescence, nitrogen assimilation, and remobilization in Pak Choi (Brassica rapa subsp. chinensis). Mature Pak Choi plants were harvested and stored at two different temperatures, 4 degrees C and 25 degrees C. Senescence was tracked via chlorophyll content and leaf yellowing. Concurrently, alterations in the total nitrogen, nitrate, and protein content were quantified on days 0, 3, 6, and 9 in old, mid, and young leaves of Pak Choi plants. As expected, 4 degrees C alleviated chlorophyll degradation and delayed senescence of Pak Choi compared to 25 degrees C. Total nitrogen and protein contents were inversely correlated, while the nitrate content remained nearly constant across leaf groups at 25 degrees C. Additionally, the transcript levels of genes involved in nitrogen assimilation and remobilization revealed key candidate genes that were differentially expressed between 4 degrees C and 25 degrees C, which might be targeted to extend the shelf life of the leafy vegetables. Thus, this study provides pivotal insights into the molecular and physiological responses of Pak Choi to post-harvest storage conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据