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Author Li S.B., Xu S.R., Zhang R.N., Liu Y., Zhou R.C.
Title The antibiosis action and rice induced resistance, mediated by a lipopeptide from Bacillus amyloliquefaciens B014, in controlling rice disease caused by Xanthomonas oryzae pv. Oryzae.
Abstract:
In present study, a lipopeptide (named AXLP14) antagonistic to Xanthomonas oryzae pv. Oryzae (Xoo) was obtained from the culture supernatant of Bacillus amyloliquefaciens B014. Matrix-assisted laser desorption/ionization time of flight mass spectrometry analysis demonstrated that AXLP14 consisted of surfactin homologues. The minimum inhibition concentration and minimum bactericidal concentration of AXLP14 against Xoo were determined to be 1.25 and 2.50 mg/ml, respectively. At a concentration of 0.613 mg/ml, AXLP14 strongly inhibited the formation of Xoo biofilm. AXLP14 also inhibited the motility of Xoo in a concentration-dependent manner. Applying AXLP14 to rice seedlings significantly reduced the incidence and severity of disease caused by Xoo. In Xoo-infected rice seedlings, AXLP14 strongly and continuously up-regulated the expression of both OsNPR1 and OsWRKY45. In addition, AXLP14 effectively inhibited the Xoo-induced up-regulation in the expression of abscisic acid biosynthesis gene OsNECD3 and the abscisic acid signaling-responsive gene OsLip9, indicating that AXLP14 may protect rice against Xoo-induced disease by enhancing salicylic acid defense and interfering with the abscisic acid response to virulence.
Journal J. Microbiol. Biotechnol.
Country China
Volume
Pages
Year 2015
PubMed ID 26718470
PubMed Central ID -
DOI 10.4014/jmb.1510.10072
URL -
Relation
Gene DHN1 NCED1 NH1 WRKY45
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
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