干旱区生态环境知识资源中心(Arid): Auxin and 1-Aminocyclopropane-1-Carboxylate Deaminase Activity Exhibiting Rhizobacteria Improved Maize Quality and Productivity under Drought Conditions

Arid

DOI	10.17957/IJAB/15.0979
	Auxin and 1-Aminocyclopropane-1-Carboxylate Deaminase Activity Exhibiting Rhizobacteria Improved Maize Quality and Productivity under Drought Conditions
	Tahir, Muhammad 1,2; Khalid, Umaira 1; Khan, Muhammad Bismillah 1; Shahid, Muhammad 3; Ahmad, Iftikhar 2; Akram, Muhammad 2; Ijaz, Muhammad 4; Hussain, Mubshar 1; Farooq, Abu Bakr Umer 2; Naeem, Muhammad Asif 2; Ahmad, Naveed 2
通讯作者	Tahir, Muhammad
来源期刊	INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
ISSN	1560-8530
EISSN	1814-9596
出版年	2019
卷号	21 期号:5 页码:943-954
英文摘要	Drought, the major characteristic of arid regions, exerts drastic effects on crop productivity. Rhizobacteria equipped with 1-aminocyclopropane-1-carboxylate (ACC) deaminase and indole-3-acetic acid producing activity (IAA) assist plants to cope with drought stress. From the arid regions (Multan and Bahawalnagar) of Southern Punjab, a total of 95 bacterial morpho-types were isolated, out of which, 32 isolates showed acetylene reduction activity (ARA), 43 were positive for phosphate (P) solubilization activity and 30 bacterial isolates produced IAA in culture medium. Of the total 95 bacterial morpho-types, 34 showed catalase activity and 25 were positive for ACC deaminase activity. Two potent bacterial isolates MD-23 and BN-5 with highest ARA, phosphate solubilizing, IAA production and positive for ACC deaminase activity were selected and tested for exopolysachharide (EPS) secretion. Significantly higher amount of sugars, (7163 mu g g(-1) and 7081 mu g g(-1)), protein (988 mu g g(-1) and 925 mu g g(-1)) and uronic acid (0.87 mu g mg(-1) and 0.82 mu g mg(-1)) were detected in EPS of BN-5 and MD-23, respectively as compared to non-inoculated control. In two years field study, maize seeds inoculated with these bacterial isolates were grown in field under drought stress at vegetative and tasseling stages {(similar to 50% field capacity (FC)} while well-watered conditions (similar to 75% FC) throughout the season were taken as control. Results disclosed that both strains (BN-5, MD-23) reduced the excised leaf water loss, increased the relative leaf water contents, chlorophyll contents and grain yield both under well-watered and drought conditions over their respective non-inoculated control. The grain quality parameters like carbohydrate, protein and oil contents of bacterial inoculated plants were enhanced over their respective non-inoculated control under well-watered and drought stress at both growth stages in both years of study. Moreover, grain yield and quality parameters were significantly lower in non-inoculated control compared with bacterial inoculation under drought stress imposed at vegetative and tasseling stages. In conclusion, the PGPR strains equipped with ACC deaminase and IAA producing activity and EPS secretion improved the yield and quality of maize under well-watered and drought stressed conditions. (C) 2019 Friends Science Publishers
英文关键词	Water stress Exopolysaccharides Rhizobacteria Phytohormone Arid region Irrigation
类型	Article
语种	英语
国家	Pakistan
收录类别	SCI-E
WOS记录号	WOS:000460430000005
WOS关键词	GROWTH-PROMOTING RHIZOBACTERIA ; PLANT-GROWTH ; COLORIMETRIC METHOD ; TERMINAL DROUGHT ; ECONOMIC RETURNS ; WATER-STRESS ; YIELD ; IRRIGATION ; BACTERIA ; SALT
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/2XILL650/216331
作者单位	1.Bahauddin Zakariya Univ Multan, Dept Agron, Multan, Pakistan; 2.COMSATS Univ Islamabad, Dept Environm Sci, Vehari Campus, Vehari, Pakistan; 3.Govt Coll Univ, Dept Bioinformat & Biotechnol, Faisalabad, Pakistan; 4.Bahauddin Zakariya Univ, Coll Agr, Bahadur Subcampus, Layyah, Pakistan
推荐引用方式 GB/T 7714	Tahir, Muhammad,Khalid, Umaira,Khan, Muhammad Bismillah,et al. Auxin and 1-Aminocyclopropane-1-Carboxylate Deaminase Activity Exhibiting Rhizobacteria Improved Maize Quality and Productivity under Drought Conditions[J],2019,21(5):943-954.
APA	Tahir, Muhammad.,Khalid, Umaira.,Khan, Muhammad Bismillah.,Shahid, Muhammad.,Ahmad, Iftikhar.,...&Ahmad, Naveed.(2019).Auxin and 1-Aminocyclopropane-1-Carboxylate Deaminase Activity Exhibiting Rhizobacteria Improved Maize Quality and Productivity under Drought Conditions.INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,21(5),943-954.
MLA	Tahir, Muhammad,et al."Auxin and 1-Aminocyclopropane-1-Carboxylate Deaminase Activity Exhibiting Rhizobacteria Improved Maize Quality and Productivity under Drought Conditions".INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY 21.5(2019):943-954.