气候变化领域集成服务门户(CCPortal): Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria

CCPortal

DOI	10.3389/fpls.2023.1081537
	Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria
	Mahreen, Naima; Yasmin, Sumera; Asif, Muhammad; Yahya, Mahreen; Ejaz, Khansa; Yousaf, Sumaira; Amin, Imran; Zulfiqar, Sana; Imran, Asma; Khaliq, Shazia; Arif, Muhammad
发表日期	2023
ISSN	1664-462X
卷号	14
英文摘要	Climate change augments the risk to food security by inducing drought stress and a drastic decline in global rice production. Plant growth-promoting bacteria (PGPB) have been known to improve plant growth under drought stress. Here in the present study, we isolated, identified, and well-characterized eight drought-tolerant bacteria from the rice rhizosphere that are tolerant to 20% PEG-8000. These strains exhibited multiple plant growth-promoting traits, i.e., 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, exopolysaccharide production, phosphate (P)-solubilizing activity (51-356 mu g ml(-1)), indole-3 acetic acid (IAA) production (14.3-46.2 mu g ml(-1)), and production of organic acids (72-178 mu g ml(-1)). Inoculation of bacterial consortium (Bacillus subtilis NM-2, Brucella haematophilum NM-4, and Bacillus cereus NM-6) significantly improved seedling growth and vigor index (1009.2-1100) as compared to non-inoculated stressed plants (630-957). Through rhizoscanning, efficiency of the consortium was validated by improved root parameters such as root length (17%), diameter, and surface area (18%) of all tested genotypes as compared with respective non-inoculated stressed treatments. Furthermore, the response of consortium inoculation on three rice genotypes was positively correlated with improved plant growth and drought stress ameliorating traits by the accumulation of osmoprotectant, i.e., proline (85.8%-122%), relative water content (51%), membrane stability index (64%), and production of antioxidant enzymes to reduce oxidative damage by reactive oxygen species. A decrease in temperature and improved chlorophyll content of inoculated plants were found using infrared thermal imaging and soil plant analyzer development (SPAD), respectively. The key supporting role of inoculation toward stress responses was validated using robust techniques like infrared thermal imaging and an infrared gas analyzer. Furthermore, principal component analysis depicts the contribution of inoculation on stress responses and yield of tested rice genotypes under water stress. The integration of drought-tolerant rice genotype (NIBGE-DT02) and potential bacterial strains, i.e., NM-2, NM-4, and NM-6, can serve as an effective bioinoculant to cope with water scarcity under current alarming issues related to food security in fluctuating climate.
英文关键词	sustainable agriculture; water scarcity; abiotic stress; Super Basmati; drought tolerant bacteria; IRGA; infrared thermal (IRT) imager; florescent in situ hybridization
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000926178500001
来源期刊	FRONTIERS IN PLANT SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281457
推荐引用方式 GB/T 7714	Mahreen, Naima,Yasmin, Sumera,Asif, Muhammad,et al. Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria[J],2023,14.
APA	Mahreen, Naima.,Yasmin, Sumera.,Asif, Muhammad.,Yahya, Mahreen.,Ejaz, Khansa.,...&Arif, Muhammad.(2023).Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria.FRONTIERS IN PLANT SCIENCE,14.
MLA	Mahreen, Naima,et al."Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria".FRONTIERS IN PLANT SCIENCE 14(2023).