干旱区生态环境知识资源中心(Arid): Integration of rhizobacterial mixture and silicon nutrition shows potential for the management of charcoal rot of sunflowers caused byMacrophomina phaseolinain semi-arid regions

Arid

DOI	10.1007/s42161-020-00652-w
	Integration of rhizobacterial mixture and silicon nutrition shows potential for the management of charcoal rot of sunflowers caused byMacrophomina phaseolinain semi-arid regions
	El Komy, Mahmoud H.; Ibrahim, Yasser E.; Saleh, Amgad A.; Molan, Younes Y.
通讯作者	El Komy, MH
来源期刊	JOURNAL OF PLANT PATHOLOGY
ISSN	1125-4653
EISSN	2239-7264
出版年	2020
卷号	102 期号:4 页码:1227-1239
英文摘要	Charcoal rot (CR), caused byMacrophomina phaseolina, is a major disease of sunflowers in semi-arid regions with poor soil conditions. There are fungicide-based strategies to mange this disease; however, alternative eco-friendly control approachs are needed to prevent further deterioration for the environment. This study describes CR control in sunflower grown in calcareous soil using a talc-based bioformulation containing a mixture of rhizobacterial strains (Azotobacter chroococcum,Azospirillum brasilense, andKlebsiella pneumoniae) integrated with silicon nutrition. The study was conducted under greenhouse conditions;M. phaseolinawas inoculated in the soil, and rhizobacterial strains were applied as seed treatment, as well as soil drenching at 7, 30, and 45 days after planting (DAP). As the silicon source (Si), potassium silicate was added to nutrient solution at a concentration of 2 mM and applied weekly starting from 7 DAP. The plants, collected at 85 DAP, showed that applying rhizobacteria and Si individually and in combination was effective in controlling CR disease and improving plant growth. The treatment that included rhizobacterial mixture and Si nutrition had a synergistic effect and resulted in the highest reduction (P < 0.05) in the disease incidence (65.3%), root-rot index (57.8%), and stem tissue colonization (63.6%) compared to non-treated inoculated control. Also, the decrease in the growth and nutrient uptake of sunflower plants due to the pathogen-induced stress was significantly reduced. Notably, rhizobacteria + Si treated-plants exhibited less lipid peroxidation and more phenolic and lignin contents with greater defence enzyme activities due to reduced root damage duringM. phaseolinainfection. Therefore, the integration between rhizobacterial inoculation and Si fertilization can be a good candidate for managing CR in sunflowers in semi-arid regions.
英文关键词	Biocontrol agents Defense responses Disease suppression Plant growth promotion Potassium silicate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000567236000002
WOS关键词	CHLOROPHYLL-A FLUORESCENCE ; MACROPHOMINA-PHASEOLINA ; DISEASE ; PLANT ; RESISTANCE ; LIGNIN ; RICE ; BIOCONTROL ; STRAWBERRY ; GROWTH
WOS类目	Plant Sciences
WOS研究方向	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/2XILL650/326131
作者单位	[El Komy, Mahmoud H.; Ibrahim, Yasser E.; Saleh, Amgad A.; Molan, Younes Y.] King Saud Univ, Coll Food & Agr Sci, Dept Plant Protect, Box 2460, Riyadh 11451, Saudi Arabia; [El Komy, Mahmoud H.; Ibrahim, Yasser E.] Agr Res Ctr, Plant Pathol Inst, Giza, Egypt; [Saleh, Amgad A.] Agr Res Ctr, Agr Genet Engn Res Inst, Giza, Egypt
推荐引用方式 GB/T 7714	El Komy, Mahmoud H.,Ibrahim, Yasser E.,Saleh, Amgad A.,et al. Integration of rhizobacterial mixture and silicon nutrition shows potential for the management of charcoal rot of sunflowers caused byMacrophomina phaseolinain semi-arid regions[J]. King Saud University,2020,102(4):1227-1239.
APA	El Komy, Mahmoud H.,Ibrahim, Yasser E.,Saleh, Amgad A.,&Molan, Younes Y..(2020).Integration of rhizobacterial mixture and silicon nutrition shows potential for the management of charcoal rot of sunflowers caused byMacrophomina phaseolinain semi-arid regions.JOURNAL OF PLANT PATHOLOGY,102(4),1227-1239.
MLA	El Komy, Mahmoud H.,et al."Integration of rhizobacterial mixture and silicon nutrition shows potential for the management of charcoal rot of sunflowers caused byMacrophomina phaseolinain semi-arid regions".JOURNAL OF PLANT PATHOLOGY 102.4(2020):1227-1239.