干旱区生态环境知识资源中心(Arid): A mixture of Azotobacter, Azospirillum, and Klebsiella strains improves root-rot disease complex management and promotes growth in sunflowers in calcareous soil

Arid

DOI	10.1007/s10658-019-01921-w
	A mixture of Azotobacter, Azospirillum, and Klebsiella strains improves root-rot disease complex management and promotes growth in sunflowers in calcareous soil
	El Komy, Mahmoud H.1,2; Hassouna, Mohamed G.3; Abou-Taleb, Eid M.3; Al-Sarar, Ali S.1; Ahohakr, Yasser 1,4
通讯作者	El Komy, Mahmoud H.
来源期刊	EUROPEAN JOURNAL OF PLANT PATHOLOGY
ISSN	0929-1873
EISSN	1573-8469
出版年	2020
卷号	156 期号:3 页码:713-726
英文摘要	Biological farming using a mixture of bio-agents that are compatible with each other and adapted to the plant rhizosphere is a strategic approach to manage crop disease. This study is a unique approach to manage the root-rot disease complex caused by Macrophomina phaseolina, Rhizoctonia solani, and Fusarium solani in sunflower plants grown in calcareous soil using a mixture of rhizobacteria strains, namely Azotobacter chroococcum ZCR, Azospirillum brasilense SBR, and Klebsiella pneumoniae KPR. These strains were screened in vitro for N-2 fixation and phosphate solubilization, as well as the production of indoleacetic acid, siderophore, and hydrogen cyanide. Interestingly, the rhizobacteria strains exhibited promising biofertilizer and biocontrol properties. Furthermore, they significantly inhibited the growth of root-rot pathogens in a dual culture assay. Notably, the rhizospheric bacteria exhibited successful colonization of the rhizoplane of sunflower plants and persisted at high levels for up to 60 days (8 x 10(4)-12 x 10(4) cfu g(-1) fresh root). In field experiments under naturally infested soil conditions, application of a bio-formulation containing a plant growth-promoting rhizobacteria mixture (HALEX bio-formulation) as a seed treatment as well as by soil drenching was found to be effective in controlling sunflower root-rot disease and significantly decreased the disease severity rating by 44-55% of the non-treated control in 2 years. In addition, treating with rhizobacteria significantly improved plant growth, yield, and oil content and decreased weight loss due to pathogen-induced stress. Consequently, it is suggested that farmers use this rhizobacteria mixture as a promising eco-friendly approach for effective management of root-rot disease complex in sunflowers in semi-arid regions.
英文关键词	Rhizobacteria inoculate Root-rot index Sunflower Plant growth-promotion Biocontrol Calcareous soil stress
类型	Article
语种	英语
国家	Saudi Arabia ; Egypt
收录类别	SCI-E
WOS记录号	WOS:000518490800004
WOS关键词	RHIZOCTONIA-SOLANI ; BIOCONTROL ; RHIZOBACTERIA ; YIELD ; PSEUDOMONAS ; CUCUMBER ; BACILLUS ; SPP. ; L.
WOS类目	Agronomy ; Plant Sciences ; Horticulture
WOS研究方向	Agriculture ; Plant Sciences
来源机构	King Saud University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314492
作者单位	1.King Saud Univ, Coll Food & Agr Sci, Dept Plant Protect, Box 2460, Riyadh 11451, Saudi Arabia; 2.Agr Res Ctr, Plant Pathol Inst, Mycol & Plant Dis Survey Dept, Giza, Egypt; 3.Alexan Univ, Fac Agr, Plant Pathol Dept, Alexandria, Egypt; 4.Agr Res Ctr, Plant Protect Res Inst, Dept Anim Pests, Sabahia Res Stn, Alexandria 21616, Egypt
推荐引用方式 GB/T 7714	El Komy, Mahmoud H.,Hassouna, Mohamed G.,Abou-Taleb, Eid M.,et al. A mixture of Azotobacter, Azospirillum, and Klebsiella strains improves root-rot disease complex management and promotes growth in sunflowers in calcareous soil[J]. King Saud University,2020,156(3):713-726.
APA	El Komy, Mahmoud H.,Hassouna, Mohamed G.,Abou-Taleb, Eid M.,Al-Sarar, Ali S.,&Ahohakr, Yasser.(2020).A mixture of Azotobacter, Azospirillum, and Klebsiella strains improves root-rot disease complex management and promotes growth in sunflowers in calcareous soil.EUROPEAN JOURNAL OF PLANT PATHOLOGY,156(3),713-726.
MLA	El Komy, Mahmoud H.,et al."A mixture of Azotobacter, Azospirillum, and Klebsiella strains improves root-rot disease complex management and promotes growth in sunflowers in calcareous soil".EUROPEAN JOURNAL OF PLANT PATHOLOGY 156.3(2020):713-726.