Physiological and morphological changes in Botrytis cinerea induced by the plant alkaloid camptothecin
文献类型: 外文期刊
第一作者: Mao, Shengfeng
作者: Mao, Shengfeng;Lei, Peng;Zhang, Liqin;Luo, Jinyan;Wu, Zhiyi;Mao, Shengfeng;Ge, Mengyu;Li, Bin;Wang, Yanli;Sun, Guochang
作者机构:
关键词: B. cinerea;Camptothecin;Enzyme activity;Gene expression;Mechanism
期刊名称:TROPICAL PLANT PATHOLOGY ( 影响因子:1.488; 五年影响因子:1.675 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Botrytis cinerea causes diseases in plants that lead to severe crop losses. This study aimed to evaluate the physiological and morphological changes and gene expression induced by camptothecin, a monoterpene indole alkaloid, for the control of B. cinerea. Using a single concentration of 8.0 mu g/mL, which showed to reduce 50 % of the dry weight of fungal mycelia, the alkaloid caused a 25 to 30 % reduction in colony diameter from 24 to 72 h of incubation and 34 to 54.7 % reduction in fungal biomass, from 24 to 96 h of incubation. Furthermore, changes in mycelial morphology were noticed based on both scanning and transmission electron microscopic observations. POD activity was reduced by 49.1 %, but PAL and SOD activity were not affected. Moreover, q-PCR analysis showed that the expression of erg27, os1, and SDHB were not affected, but the expression of cytb increased significantly, thus suggesting the involvement of this respiration-related gene in the response of B. cinerea to camptothecin. In summary, the alkaloid has the potential to improve the control of gray mold caused by B. cinerea.
分类号: Q94
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