干旱区生态环境知识资源中心(Arid): Halotolerant potassium solubilizing plant growth promoting rhizobacteria may improve potassium availability under saline conditions

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DOI	10.1007/s10661-020-08655-x
	Halotolerant potassium solubilizing plant growth promoting rhizobacteria may improve potassium availability under saline conditions
	Ashfaq, Muhammad; Hassan, Hasnuri Mat; Ghazali, Amir Hamzah Ahmad; Ahmad, Maqshoof
通讯作者	Ashfaq, M ; Hassan, HM
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2020
卷号	192 期号:11
英文摘要	Environmental change is one of the primary issues faced by the farming community. Low rainfall and high temperature in arid and semiarid regions lead to the development of secondary salinisation, thus making the problem more severe. Under saline conditions, sodium is the most crucial cation that competes with potassium (K) and adversely affects plant metabolism by inhibiting plant enzymatic activities. Potassium-solubilising bacteria (KSB) play a vital role in solubilising fixed potassium and making it accessible to plants. In the current study, 42 KSB strains were isolated from paddy rhizosphere soil grown under salt-affected conditions. The plant-growth-promoting (PGP) properties of these rhizobacteria were also evaluated. Thirteen KSB strains, positive for all tested PGP traits, were evaluated for potassium solubilisation under sodium stress, namely, 0%, 3%, 5% and 7% NaCl stress. The five best strains (Acinetobacter pittiistrain L1/4,A. pittiistrain L3/3,Rhizobium pusensestrain L3/4,Cupriavidus oxalaticusstrain L4/12 andOchrobactrum ciceristrain L5/1) based on the K-solubilising potential were identified by amplification, sequencing and bioinformatic analysis of the 16S rDNA sequences. The maximum potassium solubilisation was measured at 30 degrees C and pH 7 with glucose as carbon source. The application of these KSB strains significantly improved the shoot length, fresh weight, dry weight and chlorophyll contents of paddy plants grown under saline conditions. Hence, these strains could be halotolerant KSB bioinoculants that can be used to protect plants against salt stress.
英文关键词	Ionic balance Potassium-solubilising bacteria Nutrient solubilisation Saline soils
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000576637700001
WOS关键词	RHIZOSPHERIC SOIL ; SALT-TOLERANT ; BACTERIA KSB ; IDENTIFICATION ; PHOSPHATE ; STRESS ; GERMINATION ; MECHANISMS ; PROSPECTS ; YIELD
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326705
作者单位	[Ashfaq, Muhammad; Hassan, Hasnuri Mat; Ghazali, Amir Hamzah Ahmad] Univ Sains Malaysia, Sch Biol Sci, Usm 11800, Pulau Pinang, Malaysia; [Ahmad, Maqshoof] Islamia Univ Bahawalpur, Dept Soil Sci, Bahawalpur 63100, Pakistan
推荐引用方式 GB/T 7714	Ashfaq, Muhammad,Hassan, Hasnuri Mat,Ghazali, Amir Hamzah Ahmad,et al. Halotolerant potassium solubilizing plant growth promoting rhizobacteria may improve potassium availability under saline conditions[J],2020,192(11).
APA	Ashfaq, Muhammad,Hassan, Hasnuri Mat,Ghazali, Amir Hamzah Ahmad,&Ahmad, Maqshoof.(2020).Halotolerant potassium solubilizing plant growth promoting rhizobacteria may improve potassium availability under saline conditions.ENVIRONMENTAL MONITORING AND ASSESSMENT,192(11).
MLA	Ashfaq, Muhammad,et al."Halotolerant potassium solubilizing plant growth promoting rhizobacteria may improve potassium availability under saline conditions".ENVIRONMENTAL MONITORING AND ASSESSMENT 192.11(2020).