干旱区生态环境知识资源中心(Arid): Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat

Arid

DOI	10.1016/j.plaphy.2021.05.039
	Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat
	Akhtar, Nosheen; Ilyas, Noshin; Mashwani, Zia-ur-Rahman; Hayat, Rifat; Yasmin, Humaira; Noureldeen, Ahmed; Ahmad, Parvaiz
通讯作者	Ilyas, N (corresponding author), PMAS Arid Univ Rawalpindi, Dept Bot, Rawalpindi 46300, Pakistan.
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
EISSN	1873-2690
出版年	2021
卷号	166 页码:160-176
英文摘要	Drought tolerant plant growth-promoting rhizobacteria (PGPR) can confer drought tolerance in plants, when inoculated, and this effect can be more pronounced by their combined application with silicon oxide nanoparticles (SiO2 NPs). In this research, drought-tolerant and plant growth-promoting rhizobacterial strains were isolated from the rhizospheric soil of wheat plants growing in the arid region of Pakistan. Out of 30 isolated strains, three rhizobacterial strains were selected based on their drought tolerance, higher phytohormones (indole acetic acid (IAA), abscisic acid (ABA), and cytokinin (CK), and osmolyte (proline and sugar) production ability. These strains were identified as Bacillus sp. Azospirillum lipoferum and Azospirillum brasilense by 16S rRNA sequencing and accession numbers (MT482404, MT742664, and MT 742666, respectively) were obtained. Inoculation of these strains, alone and in combination, improved the germination attributes of wheat seeds under drought stress conditions. However, the combination of all three bacterial strains gave the best results. SiO2 NPs were prepared from silicon dioxide and characterized by scanning electron microscopy (SEM), Energy dispersive X-rays pattern (EDX), and UV-visible spectrum. The effect of SiO2 NPs was also tested on wheat seeds under drought stress and it was observed that SiO2 NPs (150 mg/L) create pronounced drought ameliorative potential in wheat seedlings. In the pot experiment, the combined application of SiO2 NPs and PGPR exhibited a synergistic role and improved the growth and yield of wheat. The interaction between SiO2 NPs and bacterial combination improved biomass (fresh and dry weight), and chlorophyll-a, b content by 138.78%, 65.70%, 128.57%, and 283.33% respectively as compared to untreated but drought exposed plants. They also improved relative water content (71.66%), gas exchange attributes, increased nutrients uptake, and osmolytes production of wheat. Up-regulation of antioxidant enzymes; superoxide dismutase (60.49%), peroxidase (55.99%), and catalase (81.69%) was also observed. This research work suggested that the application of SiO2 NPs and PGPR strains induced drought tolerance in wheat by modulating different physiological and metabolic processes in plants which ultimately improved the growth and yield of wheat under drought stress.
英文关键词	Azospirillum Bacillus Combination Silicon dioxide nanoparticles Silicon
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000665139100015
WOS关键词	TRITICUM-AESTIVUM L. ; SOYBEAN SEEDLINGS ; SALT STRESS ; ANTIOXIDANT ACTIVITIES ; PHYSIOLOGICAL TRAITS ; MEDIATED ALLEVIATION ; WATER-DEFICIT ; ULTRAVIOLET-B ; ACC-DEAMINASE ; SALINITY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351341
作者单位	[Akhtar, Nosheen; Ilyas, Noshin; Mashwani, Zia-ur-Rahman] PMAS Arid Univ Rawalpindi, Dept Bot, Rawalpindi 46300, Pakistan; [Hayat, Rifat] PMAS Arid Agr Univ Rawalpindi, Inst Soil Sci, Rawalpindi 46300, Pakistan; [Yasmin, Humaira] COMSATS Univ, Dept Biosci, Islamabad 45550, Pakistan; [Noureldeen, Ahmed] Taif Univ, Coll Sci, Dept Biol, POB 11099, At Taif 21944, Saudi Arabia; [Ahmad, Parvaiz] SP Coll, Dept Bot, Srinagar, Jammu & Kashmir, India
推荐引用方式 GB/T 7714	Akhtar, Nosheen,Ilyas, Noshin,Mashwani, Zia-ur-Rahman,et al. Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat[J],2021,166:160-176.
APA	Akhtar, Nosheen.,Ilyas, Noshin.,Mashwani, Zia-ur-Rahman.,Hayat, Rifat.,Yasmin, Humaira.,...&Ahmad, Parvaiz.(2021).Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat.PLANT PHYSIOLOGY AND BIOCHEMISTRY,166,160-176.
MLA	Akhtar, Nosheen,et al."Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat".PLANT PHYSIOLOGY AND BIOCHEMISTRY 166(2021):160-176.