The changes in chlorophyll, solanine, and phytohormones during light-induced greening in postharvest potatoes

IF 6.4 1区农林科学 Q1 AGRONOMY

Postharvest Biology and Technology Pub Date : 2024-10-29 DOI:10.1016/j.postharvbio.2024.113291

Jiaxin Wang , Jiatong Li , Wei Chen , Zhenfeng Yang , Xuewen Li , Li Wang , Shifeng Cao , Liyu Shi

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Abstract

The changes in chlorophyll, solanine, and plant hormones during greening in postharvest potatoes exposed to light were investigated. The results showed that as potatoes under light turned green, the contents of chlorophyll and solanine sharply increased due to the upregulation of genes involved in their biosynthesis. At the end of storage, the chlorophyll and solanine content in potatoes stored under light were approximately 25.44 times and 1.62 times higher, respectively, compared to those stored in the dark. Light exposure inhibited the accumulation of indole-3-acetic acid (IAA) and gibberellin in potatoes, which was associated with the downregulation of their anabolic genes and the positive regulation of their catabolic genes. In contrast, light treatment increased the levels of ethylene, melatonin, brassinosteroid, abscisic acid and 6-benzylaminopurine compared to dark-stored potatoes. Correlation analysis revealed that solanine content was negatively correlated with IAA (r = −0.93) during greening, while chlorophyll content was positively associated with ethylene production (r = 0.91) but negatively related to IAA (r = −0.89). Our results suggested potential roles of phytohormones in regulating chlorophyll and solanine during greening in light exposed potatoes, which deserves further investigation.

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马铃薯收获后光照诱导变绿过程中叶绿素、茄碱和植物激素的变化

研究了光照下收获后马铃薯变绿过程中叶绿素、茄碱和植物激素的变化。结果表明，当光照下的马铃薯变绿时，由于参与叶绿素和茄碱生物合成的基因上调，叶绿素和茄碱的含量急剧增加。贮藏结束时，在光照下贮藏的马铃薯的叶绿素和茄碱含量分别是在黑暗中贮藏的马铃薯的约 25.44 倍和 1.62 倍。光照抑制了马铃薯中吲哚-3-乙酸（IAA）和赤霉素的积累，这与它们的合成代谢基因的下调和分解代谢基因的正调控有关。相反，与暗藏马铃薯相比，光照处理提高了乙烯、褪黑激素、铜绿素、脱落酸和 6-苄基氨基嘌呤的水平。相关分析表明，在返青过程中，茄碱含量与 IAA 呈负相关（r = -0.93），而叶绿素含量与乙烯的产生呈正相关（r = 0.91），但与 IAA 呈负相关（r = -0.89）。我们的研究结果表明，植物激素在光照马铃薯返青过程中对叶绿素和茄碱具有潜在的调节作用，值得进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Postharvest Biology and Technology 农林科学-农艺学

CiteScore

12.00

自引率

11.40%

发文量

309

审稿时长

38 days

期刊介绍： The journal is devoted exclusively to the publication of original papers, review articles and frontiers articles on biological and technological postharvest research. This includes the areas of postharvest storage, treatments and underpinning mechanisms, quality evaluation, packaging, handling and distribution of fresh horticultural crops including fruit, vegetables, flowers and nuts, but excluding grains, seeds and forages. Papers reporting novel insights from fundamental and interdisciplinary research will be particularly encouraged. These disciplines include systems biology, bioinformatics, entomology, plant physiology, plant pathology, (bio)chemistry, engineering, modelling, and technologies for nondestructive testing. Manuscripts on fresh food crops that will be further processed after postharvest storage, or on food processes beyond refrigeration, packaging and minimal processing will not be considered.