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Study on Promoting Ability and Induced Resistance of Marine Paenibacillus polymyxa Strain L1-9 in Cucumber(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年21期
Page:
133-137
Research Field:
Publishing date:

Info

Title:
Study on Promoting Ability and Induced Resistance of Marine Paenibacillus polymyxa Strain L1-9 in Cucumber
Author(s):
WANG Xi; LIU Jia; BAO Zeng-hai; MA Gui-zhen; WANG Shu-fang
College of Marine Science,Huaihai Institute of Technology,Lianyungang,Jiangsu 222005
Keywords:
Paenibacillus polymyxa L1-9 strain; promotion; induced resistance
PACS:
S 642.204+.1
DOI:
-
Abstract:
Taking Paenibacillus polymyxa as material,the promoting ability and disease prevention effect of L1-9 on cucumber were studied under the treatment with soaking seeds by the Oxford cup method.The length of cucumber seedlings root,the number of fibrous roots and the inhibition of fusarium wilt of cucumber were measured.At the same time,four defense enzymes in cucumber roots as phenylalaninaminolyase(PAL),peroxidase(POD),polyphenoloxidas(PPO) and superoxide dismutase(SOD) were studied.The results showed that L1-9 fermentation broth could promote the increase of fibrous roots and elongation of root,and had an obvious effect on fusarium wilt of cucumber;the activity of PAL,POD,PPO and SOD in cucumber seedlings roots after soaking treatments was significantly higher than control treatment.These demonstrated that strain L1-9 could induce cucumber’s resistance to fusarium wilt under the treatment as soaking seeds.

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Last Update: 2014-12-01