Sulfur dioxide enhances postharvest grape resistance to Botrytis cinerea by promoting glutathione level
文献类型： 外文期刊
作者： Xing, Shijun 1 ; Wang, Man 2 ; Zhang, Zheng 2 ; Yuan, Yuyao 2 ; Song, Zunyang 3 ; Wu, Bin 2 ; Wei, Jia 2 ;
作者机构： 1.Xinjiang Agr Univ, Coll Hort, Urumqi 830052, Xinjiang Uygur, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Agroprod Storage & Proc, Urumqi 830091, Xinjiang Uygur, Peoples R China
3.Shandong Agr Univ, Coll Food Sci & Engn, Key Lab Food Nutr & Healthy Univ Shandong, Tai An 271018, Shandong, Peoples R China
4.Xinjiang Acad Agr Sci, Xinjiang Key Lab Proc & Preservat Agr Prod, Urumqi 830091, Xinjiang Uygur, Peoples R China
关键词： Sulfur dioxide; Grape; Gray mold; Botrytis cinerea; Glutathione
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.3； 五年影响因子：4.5 ）
ISSN： 0304-4238
年卷期： 2024 年 334 卷
页码：
收录情况： SCI
摘要： Gray mold, a fungal disease caused by Botrytis cinerea , is held responsible for postharvest decay of table grape that seriously reduces the edible quality and commercial value of berries. Sulfur dioxide (SO 2 ) treatment is a globally employed and effective method for controlling gray mold. Nevertheless, the potential mechanism underlying its inhibitory effect has not been completely understood. With the aim of investigating the impact of SO 2 on enhancing the postharvest grape resistance to B. cinerea , 'Munage grape ' ( Vitis vinifera L.) was initially treated by SO 2 fumigation then inoculated with B. cinerea . The results indicated that 200 mu L/L SO 2 pretreatment effectively delayed the increase in lesion diameter. Further studies found that SO 2 increased enzymes activity by upregulating the transcription levels of related genes in glutathione (GSH) synthesis and GSH-cycling pathways, thereby maintaining high GSH levels and GSH/GSSG (oxidized glutathione). SO 2 also increased the activity and gene expression levels of GSH-S-transferase, a key enzyme for detoxification. The upregulation of pathogenesisrelated genes further demonstrated the enhancement of disease resistance induced by SO 2 . Subsequent correlation analysis showed that GSH was conducive to inhibit the development of gray mold. Our results preliminarily confirm that SO 2 enhances postharvest grape resistance to B. cinerea by promoting GSH level, and the results enrich the understanding of the biological effect of SO 2 .
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