Effects of 1-Methylcyclopropene on NO Content, NOS Activity, and H2O2 Content in Postharvest Suli Pears
文献类型: 外文期刊
作者: Dong Yu 1 ; Liu Li-qin 1 ; Guan Jun-feng 1 ;
作者机构: 1.Hebei Acad Agr & Forestry Sci, Inst Genet & Physiol, Shijiazhuang 050051, Peoples R China
2.Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050016, Peoples R China
关键词: pear;1-MCP;NO;NOS;H2O2
期刊名称:AGRICULTURAL SCIENCES IN CHINA ( 影响因子:0.82; 五年影响因子:0.997 )
ISSN: 1671-2927
年卷期: 2011 年 10 卷 5 期
页码:
收录情况: SCI
摘要: Studies were conducted over the effects of 1-methylcycolpropene (1-MCP) treatment on postharvest life of Suli pears (Pyrus bretschneideri Rehd.) stored at room and cold temperatures on nitric oxide (NO), nitric oxide synthase (NOS) activity, and hydrogen dioxide (H2O2). Results showed that the 1-MCP treatment had little effect on total soluble solids (TSS) at both room and cold temperatures. 1-MCP delayed softening of Suli pear fruits, decreased respiratory rate and H2O2 accumulation, and increased NO and NOS activity at room temperature storage, while the effect of cold temperature storage was relatively inferior. There was a significant positive correlation between NOS activity and NO content. It is concluded that 1-MCP had effects on endogenous NO content and accumulation of H2O2. Similarly, H2O2 acting as a signaling molecule via regulating NO level affects the ripening and senescence of Suli pears.
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