Induced resistance to Cladosporium cucumerinum in cucumber by pectinases extracted from Penicillium oxalicum

doi:10.1007/BF02979849

CORC > 中国农业科学院 > 蔬菜花卉研究所

	Induced resistance to Cladosporium cucumerinum in cucumber by pectinases extracted from Penicillium oxalicum
	Peng, XW; Zhang, HX; Bai, ZH; Li, BJ
刊名	PHYTOPARASITICA
	2004
卷号	32 期号:4 页码:377-387
关键词	cucumber scab induced protection pectinase pectinase extract Penicillium oxalicum
ISSN号	0334-2123
DOI	10.1007/BF02979849
通讯作者	Peng, XW
英文摘要	Pectinases extract (PE) from the fermentation product of Penicillium oxalicum BZH-2002 was tested for its ability to induce protection against scab caused by Cladosporium cucumerinum on cucumber (Cucumis sativus L.) plants. Seedlings with one true leaf were sprayed with various concentrations of PE (10-200 units ml(-1)) 3 days before inoculation with C cucumerinum. Results showed that the induced local protection against the pathogen was dose-dependent when the concentrations of PE were between 20 and 120 units ml(-1); systemically induced resistance against the pathogen was not observed. Boiled PE had a slight effect on disease reduction. Commercial pectinases prepared from Aspergillus niger showed lower protection against scab compared with PE when they were used at the same concentration of enzyme activity. No inhibitory activity was observed on conidial germination or germ-tube growth of C. cucumerinum. PE was further evaluated for its enhancement of defense-related enzymes. Peroxidase (PO), polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL) increased in cucumber seedlings after treatment with PE. PO and PPO remained at a higher level in PE-pretreated seedlings throughout the experiment period whether pathogen-inoculated or non-inoculated, whereas PAL activity began to decrease 2 days after PE treatment.
学科主题	Plant Sciences ; PLANT SCIENCES
语种	英语
出版者	PRIEL PUBL
WOS记录号	WOS:000223520200010
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101255]
专题	蔬菜花卉研究所
作者单位	(1)Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Dept Environm Biotechnol, Beijing 100085, Peoples R China;(2)Chinese Acad Sci, Grad Sch, Beijing 100085, Peoples R China;(3)Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Peng, XW,Zhang, HX,Bai, ZH,et al. Induced resistance to Cladosporium cucumerinum in cucumber by pectinases extracted from Penicillium oxalicum[J]. PHYTOPARASITICA,2004,32(4):377-387.
APA	Peng, XW,Zhang, HX,Bai, ZH,&Li, BJ.(2004).Induced resistance to Cladosporium cucumerinum in cucumber by pectinases extracted from Penicillium oxalicum.PHYTOPARASITICA,32(4),377-387.
MLA	Peng, XW,et al."Induced resistance to Cladosporium cucumerinum in cucumber by pectinases extracted from Penicillium oxalicum".PHYTOPARASITICA 32.4(2004):377-387.