Endophytic Bacillus subtilis Strain E1R-J Is a Promising Biocontrol Agent for Wheat Powdery Mildew
Joint Authors
Gao, Xiaoning
Gong, Yufei
Huo, Yunxia
Han, Qingmei
Kang, Zhensheng
Huang, Lili
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
In this study, the biocontrol efficacies of 14 endophytic bacterial strains were tested against Blumeria graminis f.
sp.
tritici (Bgt) in pot experiments under greenhouse conditions.
Bacillus subtilis strain E1R-j significantly reduced disease index and exhibited the best control (90.97%).
When different formulations of E1R-j were sprayed 24 h before Bgt inoculation, fermentation liquid without bacterial cell and crude protein suspension displayed the similar effects; and they reduced disease index more than bacterial cell suspension (109 cfu mL−1) and fermentation liquid without protein.
The control effects were not significantly different between 1011 and 109 cfu mL−1 of bacterial cell suspension but were higher than 107 cfu mL−1.
Further observations showed that conidial germination and appressorial formation of Bgt were retarded by spraying E1R-j 24 h before Bgt inoculation.
Compared with the water check, conidial germination and appressorial formation were decreased by 43.3% and 42.7%, respectively.
In the treatment with E1R-j, the number of houstoria significantly reduced and the speed of mycelial extension was slowed down in the wheat leaves.
Scanning electron microscopy observation revealed that E1R-j significantly suppressed the conidial germination and caused rupture and deformation of germ tubes.
On the surface of wheat leaves, mycelia and conidiophores became shrinking.
American Psychological Association (APA)
Gao, Xiaoning& Gong, Yufei& Huo, Yunxia& Han, Qingmei& Kang, Zhensheng& Huang, Lili. 2015. Endophytic Bacillus subtilis Strain E1R-J Is a Promising Biocontrol Agent for Wheat Powdery Mildew. BioMed Research International،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1055574
Modern Language Association (MLA)
Gao, Xiaoning…[et al.]. Endophytic Bacillus subtilis Strain E1R-J Is a Promising Biocontrol Agent for Wheat Powdery Mildew. BioMed Research International No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1055574
American Medical Association (AMA)
Gao, Xiaoning& Gong, Yufei& Huo, Yunxia& Han, Qingmei& Kang, Zhensheng& Huang, Lili. Endophytic Bacillus subtilis Strain E1R-J Is a Promising Biocontrol Agent for Wheat Powdery Mildew. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1055574
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1055574