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DOI	10.1016/j.apsoil.2018.09.015
	Alleviation of drought stress in maize (Zea mays) by inoculation with Azotobacter strains isolated from semi-arid regions
	Shirinbayan, Shima 1; Khosravi, Houshang 2; Malakouti, Mohammad Jafar 1
通讯作者	Khosravi, Houshang
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2019
卷号	133 页码:138-145
英文摘要	A large area of Iran is located in arid and semi-arid regions; as a result, drought stress is a major problem for the growth of plants. Therefore, it is very important in crop productivity to increase plant tolerance to drought stress. Plant growth promoting rhizobacteria such as Azotobacter may enhance plant growth under drought stress conditions by different mechanisms. In this study, a total of 20 Azotobacter strains were isolated and characterized from 77 rhizosphere soil samples collected from semi-arid regions. The strains were screened for the production of siderophore and IAA, solubilization of phosphate and potassium and growth under drought stress in PEG 6000. The strains were identified by 16S rRNA gene sequencing. The efficient strains were tested on the growth of maize (Zea mays) under drought stress by using three levels of irrigation, including 80, 60 and 40 percent of field capacity in greenhouse conditions. The laboratory results revealed that Az63, Az69 and Az70 were the most effective strains in terms of phosphate and potassium solubilisation, siderophore producion and maximum growth in PEG 6000. At 40 percent of field capacity, the inoculation increased shoot dry weight, plant height, chlorophyll content, nitrogen, phosphorous and iron concentration compared to the control. Az63 and Az70 increased shoot dry weight significantly at 60 percent of field capacity.
英文关键词	Water stress PEG 6000 Siderophore Auxin
类型	Article
语种	英语
国家	Iran
收录类别	SCI-E
WOS记录号	WOS:000449698100016
WOS关键词	PHOSPHATE SOLUBILIZATION ; VINELANDII ; NITROGEN ; GROWTH ; YIELD ; IRON ; BIOSYNTHESIS ; SIDEROPHORE ; RHIZOSPHERE
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214268
作者单位	1.Tarbiat Modares Univ, Dept Soil Sci, Tehran, Iran; 2.Agr Res Educ & Extens Org, Soil & Water Res Inst, Karaj, Iran
推荐引用方式 GB/T 7714	Shirinbayan, Shima,Khosravi, Houshang,Malakouti, Mohammad Jafar. Alleviation of drought stress in maize (Zea mays) by inoculation with Azotobacter strains isolated from semi-arid regions[J],2019,133:138-145.
APA	Shirinbayan, Shima,Khosravi, Houshang,&Malakouti, Mohammad Jafar.(2019).Alleviation of drought stress in maize (Zea mays) by inoculation with Azotobacter strains isolated from semi-arid regions.APPLIED SOIL ECOLOGY,133,138-145.
MLA	Shirinbayan, Shima,et al."Alleviation of drought stress in maize (Zea mays) by inoculation with Azotobacter strains isolated from semi-arid regions".APPLIED SOIL ECOLOGY 133(2019):138-145.