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	Phylogenetic diversity of drought tolerant Bacillus spp. and their growth stimulation of Zea mays L. under different water regimes
	Moon, Sajid; Asif, Raheem; Basharat, Ali
通讯作者	Basharat, A
来源期刊	RESEARCH JOURNAL OF BIOTECHNOLOGY
ISSN	2278-4535
出版年	2017
卷号	12 期号:10 页码:38-46
英文摘要	The objective of this study was to evaluate the potential of drought tolerant rhizobacteria to enhance the growth of Zea mays L. under different moisture levels. Drought tolerant bacterial strains that included Bacillus subtilis AB-21, B. subtilis AB-61, B. aryabhatti AB-51, B. toyonesis AM-25, B. licheniformis AM-21 and B. pumilus AB-33 were isolated from a semi-arid region of Pothohar located in North-Eastern Pakistan. Taxonomic status of Bacillus strains was confirmed by 16S rRNA gene sequencing. Strains were screened for in vitro plant growth promoting traits such as auxin synthesis, phosphate solubilization and ammonia production. Colorimetric analysis for in vitro auxin production recorded 142 and 135 mu g ml(-1) respectively for B. aryabhatti AB-51 and B. pumilus AB-33. After screening, strains were used to mitigate the water stress of Z. mays under axenic conditions. Pot trials were conducted at 21% and 14% field capacity (FC) of the loamy soil under single and mixed culture inoculations. Loamy soil naturally has FC around 28% that was used as control. At highest water stress (14% FC), significant response for fresh (25%) and dry weight (45%) was recorded with B. subtilis AB-21 over respective control. For shoot length, mixed culture combination C-3 (B. licheniformis AM-21 B. pumilus AB-33 and B. subtilis AB-61) recorded 46% increase, over control at 14% FC. On the other hand, B. subtilis AB-21 and B. aryabhatti AB-51 recorded 15% and 50% increases respectively for root length and number of roots at 14% and 21% FC. This study showed that auxin production by different Bacillus strains is associated to enhance the vegetative growth parameters of maize under water stress conditions.
英文关键词	Indole-3-acetic acid Bacillus Plant growth promoting rhizobacteria L-tryptophan Water stress Field capacity
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000413683500005
WOS关键词	PLANT-GROWTH ; PROMOTING RHIZOBACTERIA ; STRESS ; SOIL ; INOCULANTS ; BACTERIA ; AUXIN
WOS类目	Biotechnology & Applied Microbiology
WOS研究方向	Biotechnology & Applied Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332334
作者单位	[Moon, Sajid; Asif, Raheem; Basharat, Ali] Univ Punjab, Dept Microbiol & Mol Genet, Lahore 54590, Pakistan
推荐引用方式 GB/T 7714	Moon, Sajid,Asif, Raheem,Basharat, Ali. Phylogenetic diversity of drought tolerant Bacillus spp. and their growth stimulation of Zea mays L. under different water regimes[J],2017,12(10):38-46.
APA	Moon, Sajid,Asif, Raheem,&Basharat, Ali.(2017).Phylogenetic diversity of drought tolerant Bacillus spp. and their growth stimulation of Zea mays L. under different water regimes.RESEARCH JOURNAL OF BIOTECHNOLOGY,12(10),38-46.
MLA	Moon, Sajid,et al."Phylogenetic diversity of drought tolerant Bacillus spp. and their growth stimulation of Zea mays L. under different water regimes".RESEARCH JOURNAL OF BIOTECHNOLOGY 12.10(2017):38-46.