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Physiological and morphological changes in Botrytis cinerea induced by the plant alkaloid camptothecin

文献类型： 外文期刊

作者： Mao, Shengfeng 1 ; Luo, Jinyan 2 ; Wu, Zhiyi 3 ; Lei, Peng 1 ; Ge, Mengyu 5 ; Li, Bin 5 ; Wang, Yanli 6 ; Zhang, Liqin 1 ; S 1 ;

作者机构： 1.Zhejiang A&F Univ, Sch Forestry & Biotechnol, State Key Lab Breeding Base Subtrop Forest Cultiv, Lin An 311300, Peoples R China

2.Ctr Agr Tech, Shanghai Extens & Serv, Shanghai 201103, Peoples R China

3.Zhejiang Entry Exit Inspect & Quarantine Bur, Hangzhou 310012, Zhejiang, Peoples R China

4.Nanjing Forestry Univ, Coll Forestry, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing 210037, Peoples R China

5.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310058, Zhejiang, Peoples R China

6.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Key Lab Detect Pesticide Residues, Minist Agr, Hangzhou 310021, Zhejiang, Peop

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：

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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.

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