Plant growth promotion and suppression of bacterial leaf blight in rice by Paenibacillus polymyxa Sx3

被引：52
作者：
Abdallah, Y. [1 ,2 ,3 ]
Yang, M. [1 ,2 ]
Zhang, M. [1 ,2 ]
Masum, Md. M. I. [1 ,2 ]
Ogunyemi, S. O. [1 ,2 ]
Hossain, A. [1 ,2 ]
An, Q. [1 ,2 ]
Yan, C. [4 ,5 ]
Li, B. [1 ,2 ]
机构：
[1] Zhejiang Univ, State Key Lab Rice Biol, Hangzhou, Zhejiang, Peoples R China
[2] Zhejiang Univ, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Inst Biotechnol, Hangzhou, Zhejiang, Peoples R China
[3] Menia Univ, Dept Plant Pathol, El Minya, Egypt
[4] Ningbo Univ, Inst Plant Virol, Ningbo, Zhejiang, Peoples R China
[5] Ningbo Acad Agr Sci, Inst Biotechnol, Ningbo, Zhejiang, Peoples R China
来源：
LETTERS IN APPLIED MICROBIOLOGY | 2019年 / 68卷 / 05期
基金：
中国国家自然科学基金;
关键词：
biocontrol; MALDI-TOF MS; P; polymyxa; plant growth promotion; transmission and scanning electron microscopy; X; oryzae pv; oryzae; SYSTEMIC RESISTANCE; NITROGEN-FIXATION; FUSARICIDIN;
D O I：
10.1111/lam.13117
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The effects and mechanisms of Paenibacillus polymyxa Sx3 on growth promotion and the suppression of bacterial leaf blight in rice were evaluated in this study. The results from a plate assay indicated that Sx3 inhibited the growth of 20 strains of Xanthomonas oryzae pv. oryzae (Xoo). Rice seedling experiments indicated that Sx3 promoted plant growth and suppressed bacterial leaf blight. In addition, bacteriologicaltests showed that Sx3 was able to fix nitrogen, solubilize phosphate and produce indole acetic acid, indicating that various mechanisms may be involved in the growth promotion by Sx3. The culture filtrate of P. polymyxa Sx3 reduced bacterial growth, biofilm formation and disrupted the cell morphology of Xoo strain GZ 0005, as indicated by the transmission and scanning electron microscopic observations. In addition, MALDI-TOF MS analysis revealed that Sx3 could biosynthesize two types of secondary metabolites fusaricidins and polymyxin P. In summary, this study clearly indicated that P. polymyxa Sx3 has strong invitro and invivo antagonistic activity against Xoo, which may be at least partially attributed to its production of secondary metabolites.
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收藏
页码：423 / 429
页数：7
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