Arid
DOI10.17957/IJAB/15.0387
Scrutinizing of Rhizobacterial Isolates for Improving Drought Resilience in Maize (Zea mays)
Ali, Liaqat1; Khalid, Muhammad1; Asghar, Hafiz Naeem1; Asgher, Muhammad2
通讯作者Ali, Liaqat
来源期刊INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
ISSN1560-8530
EISSN1814-9596
出版年2017
卷号19期号:5页码:1054-1064
英文摘要

Food security due to scarcity of water to field crops is major concern now a days due to stress environments. A growth room trial was performed to screen potential bacterial inoculants for improving growth and physiology of maize (Zea mays L.) under water scarcity. Thirty fast growing rhizobacteria were isolated from rhizosphere of maize, cultivated in arid and semiarid areas of the province (Punjab). Isolates were evaluated for their plant growth promoting characters and drought tolerance, at various moisture levels developed in-vitro by using 0, 5, 10, 15, 20 and 25% polyethylene glycol (PEG-6000). Nine most efficient isolates (LK-2, LK-7, LK-9, LK-13, LK-16, LK-18, LK-21, LK-24, LK-29) were selected, having potential ability to survive in water stressed condition and were tested further in a jar experiment for their role in morphophysiological improvements in maize seedlings, grown at different drought levels (100, 70 and 40% field capacity (FC). Results depicted that inoculation significantly (P <= 0.05) enhanced root/shoot biomass & root/ shoot ratio, chlorophyll a and b, starch content, soluble sugars, relative water content, photosynthetic rate, water use efficiency and stomatal conductance. Overall, isolate LK-13 and LK-16 were found more prominent in inducing drought tolerance in seedlings as compared to other isolates and uninoculated control. Identification of isolates through 16sRNA sequencing confirmed the both strains (LK-13 and LK-16) belong to Bacillus spp. Inoculation of maize seeds with rhizobacteria as plant growth promoting rhizobacteria enhanced growth and physiology of maize. So, inoculation of PGPR could be a potential approach for enhancing drought resilience in maize (Zea mays L.). (C) 2017 Friends Science Publishers


英文关键词Rhizobacteria Physiology Proline Soluble sugars Water use efficiency
类型Article
语种英语
国家Pakistan
收录类别SCI-E
WOS记录号WOS:000412172700015
WOS关键词GROWTH-PROMOTING RHIZOBACTERIA ; ARBUSCULAR MYCORRHIZAL FUNGI ; TRITICUM-AESTIVUM L. ; ORYZA-SATIVA L. ; WATER-STRESS ; DESICCATION TOLERANCE ; RHIZOBIUM-MELILOTI ; PLANT PRODUCTIVITY ; ACC-DEAMINASE ; BACTERIA
WOS类目Agriculture, Multidisciplinary ; Biology
WOS研究方向Agriculture ; Life Sciences & Biomedicine - Other Topics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199687
作者单位1.Univ Agr Faisalabad, Fac Agr, Inst Soil & Environm Sci, Faisalabad 38040, Pakistan;
2.Univ Agr Faisalabad, Fac Sci, Dept Biochem, Faisalabad 38040, Pakistan
推荐引用方式
GB/T 7714
Ali, Liaqat,Khalid, Muhammad,Asghar, Hafiz Naeem,et al. Scrutinizing of Rhizobacterial Isolates for Improving Drought Resilience in Maize (Zea mays)[J],2017,19(5):1054-1064.
APA Ali, Liaqat,Khalid, Muhammad,Asghar, Hafiz Naeem,&Asgher, Muhammad.(2017).Scrutinizing of Rhizobacterial Isolates for Improving Drought Resilience in Maize (Zea mays).INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,19(5),1054-1064.
MLA Ali, Liaqat,et al."Scrutinizing of Rhizobacterial Isolates for Improving Drought Resilience in Maize (Zea mays)".INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY 19.5(2017):1054-1064.
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