Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions

doi:10.4014/jmb.2009.09032

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Title:	Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions
Authors:	Wang, Ru Wang, Chen Feng, Qing Liou, Rey-May Lin, Ying-Feng
Contributors:	Qilu Univ Technol, Coll Environm Sci & Engn, Shandong Acad Sci Chia Nan Univ Pharm & Sci, Dept Res & Dev, Ctr Ecol Engn & Technol
Keywords:	Salt-tolerant bacteria salt stress plant growth-promoting traits Bacillus Brevibacterium frigoritolerans
Date:	2021
Issue Date:	2023-11-11 11:54:10 (UTC+8)
Publisher:	KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
Abstract:	Using salt-tolerant bacteria to protect plants from salt stress is a promising microbiological treatment strategy for saline?alkali soil improvement. Here, we conducted research on the growth promoting effect of Brevibacterium frigoritolerans on wheat under salt stress, which has rarely been addressed before. The synergistic effect of B. frigoritolerans combined with representative salt tolerant bacteria Bacillus velezensis and Bacillus thuringiensis to promote the development of wheat under salt stress was also further studied. Our approach involved two steps: investigation of the plant growth-promoting traits of each strain at six salt stress levels (0, 2, 4, 6, 8, and 10%); examination of the effects of the strains (single or in combination) inoculated on wheat in different salt stress conditions (0, 50, 100, 200, 300, and 400 mM). The experiment of plant growth-promoting traits indicated that among three strains, B. frigoritolerans had the most potential for promoting wheat parameters. In single-strain inoculation, B. frigoritolerans showed the best performance of plant growth promotion. Moreover, a pot experiment proved that the plant growth-promoting potential of co-inoculation with three strains on wheat is better than single-strain inoculation under salt stress condition. Up to now, this is the first report suggesting that B. frigoritolerans has the potential to promote wheat growth under salt stress, especially combined with B. velezensis and B. thuringiensis.
Relation:	J MICROBIOL BIOTECHN, v.31, n.3, pp.398-407
Appears in Collections:	[Research and Development Center of Ecological Engineering and Technology] Periodical Articles

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