Aug 2026· Chemical and Biological Technologies in Agriculture· 0 citations
Abstract
Accumulation of steroidal glycoalkaloids (SGAs) drives postharvest potato tuber greening and poses food-safety risks, yet the temporal dynamics and regulatory basis of light induction remain unclear.
We compared a storage-tolerant cultivar (XS) and a storage-sensitive cultivar (JZ). Under continuous light for 0, 2, 10, and 30 d, we quantified α-solanine and α-chaconine and performed integrated metabolomic and transcriptomic analyses in JZ. SGAs increased more sharply in JZ than in XS. Metabolomics detected 616 differentially accumulated metabolites: steroid-related metabolites (diosgenin) rose rapidly at 2 d, whereas phenolic acids, flavonoids, and SGAs accumulated at 30 d. Transcriptome profiling indicated early activation of sterol/cholesterol biosynthesis and late enhancement of phenylpropanoid and phytosterol pathways. WGCNA identified candidate genes including CYP72A54, MYB185, HY5, and PIF3.
We propose an “early steroid remodeling–late co-amplification of phenolics and SGAs” model, providing evidence for postharvest light-exclusion management and low-SGA breeding, and supporting risk assessment during storage and transport.
It is suggested that heat stress suppresses PMF accumulation through coordinated repression of PMF biosynthetic genes and their potential regulators and offers potential targets for maintaining citrus nutritional quality under elevated temperatures.
Xiaojuan Liu, Zhenkun Liao, Honglu Hu et al.· Horticulturae· 0 citations
Simple Summary Zanthoxylum armatum is an economically important tree species in Southwest China valued for the flavor and medicinal properties of its fruits and leaves. Leaf rust disease severely threatens its cultivation. We discovered a spontaneous branch mutant with strong rust resistance on an otherwise susceptible...
Han-Lu Hu, Cheng-Jie Shu, Xiao-Xia Sun et al.· Biology· 0 citations
The commercial value of cut roses is severely constrained by their short vase life, which results from rapid postharvest senescence. Although strigolactones (SLs) are known to regulate plant stress responses, their role in preserving cut flowers remains largely unexplored. In this study, we integrated physiological ass...
Yi-Han He, Feng Chen, Lu-Chen Xiao et al.· Plant physiology and biochem...· 0 citations
Mango (Mangifera indica L.) is a climacteric fruit and its ripening and post-harvest quality is regulated by complex interactions of genetic, hormonal, biochemical and molecular regulatory networks. Ethylene is a major regulator of fruit ripening, inducing 1-aminocyclopropane-1-carboxylic acid synthase (ACS) and ACC ox...
T. Ankur, B. Anju, V. Tripathi et al.· Plant Science Today· 0 citations
Steroidal glycoalkaloids (SGAs) are nitrogenous defence metabolites characteristic of Solanum species. Although the major potato SGAs α-solanine and α-chaconine are well known, the full structural scope of glycoalkaloids in vegetative tissues remains largely uncharacterized. Here, we applied untargeted ultra-high-perfo...
Gilles Rousseau, Boris Krings, Y. Muhovski· Potato Research· 0 citations
Glucosinolates in two genotypes of kale sprouts treated with methyl jasmonate (MeJA) were analyzed using ultrahigh-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-QTOF-MS). This approach enabled the identification of 13 distinct glucosinolates (GSLs) and the quantitativ...
Huixia Bai, Ya Luo, Wang Huan et al.· Physiologia Plantarum : An I...· 0 citations
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