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ANTIBIOTIC ACTIVITYOF METABOLITES FROMX ENORHABDUSNEMA TOPHILUS AGAINST PHYTOPHTHORA SOJAE(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2002年01期
Page:
52-55
Research Field:
Publishing date:

Info

Title:
ANTIBIOTIC ACTIVITYOF METABOLITES FROMX ENORHABDUSNEMA TOPHILUS AGAINST PHYTOPHTHORA SOJAE
Author(s):
Yang Xiufen 　Yang Huaiw en 　Jian Hen
Inst itute of Biological Control , Chinese Academy of Agricultural Science , Beijing 100081
Keywords:
Xenorhabdus nematophi lus ; Phytophthora sojae ; Inhibit activity
PACS:
S 432
DOI:
10.11861/j.issn.1000-9841.2002.01.0052
Abstract:
The metabolites produced by Xenorhabdus nematophilus were tested for the activity against theg row th of hy phae and the spo rangia formation and spo rangia germination of Phy tophora sojae , and the ef fect ofboth soil and seed treated with metaboli tes on seeding disease w ere evaluated .The result show ed that the inhibitionin grow th rate of hyphae w as 100 % at concent ration of 50ml/L of the fermentatio n filt rate and 68 .86 % at6ml/L fermentation f iltrate .97 .04 % -99 .19 % inhibition of sporangia fo rmation w as obtained at 10ml/L -100ml/L fermentation f ilt rate and also 82 .8 % inhibi tion w as obtained at 5ml/L of fermentation filtrate in 8day spost t reatment .The concent ration of 6ml/ L -100ml/ L of fermentation filt rate inhibited spo rangia germinat ionby 72 .94 %- 88 .56 % in 48h post treatment .When soybean seeds w ere soaked into 50ml/L fermentation filtratefor 6h prio r to planting , the disease reduction reached 79 .8 %in 9days post planting , but only reached 34 .4 %in 12days .When disease soil treated wi th 50ml/L concent ration of fermentatio n filt rate and 1 .7ml/L chemicalsrespectively , disease reduction obtained by 76 .0 % and 84 .0 % respect ively .

References:

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Last Update: 2016-12-29