促生芽孢杆菌:一种促进植物生长的新根菌,对鹰嘴豆干根腐病的防治具有促进植物生长和抑制bataticola根核菌的作用

IF 0.8 4区 生物学 Q3 AGRONOMY Legume Research Pub Date : 2023-09-13 DOI:10.18805/lr-5106
Gururaj Sunkad, Meghana S. Patil, Ranjana Joshi
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引用次数: 0

摘要

背景:近年来鹰嘴豆生产受到干根腐病的威胁。该病害是由土传真菌bataticola Rhizoctonia (Taub) Butler及其毒副期Macrophomina phaseolina (Tassi) Goid引起的。芽孢杆菌是一种杆状革兰氏阴性根杆菌,在土壤中占主导地位。因此,考虑到该疾病在经济上的重要性,本研究利用与拮抗潜能和植物生长促进性状相关的本土芽孢杆菌菌株对该病原体进行了抑制。方法:从鹰嘴豆健康根际土壤样品中分离到30株本土细菌PGPR菌株,对其拮抗潜能进行了研究。随后,对潜在的促生长性状进行了研究。在分子水平16S rDNA上鉴定了有希望的菌株。结果:30株根际芽孢杆菌PGPR菌株均具有潜在拮抗作用,其中9株具有50%以上的拮抗作用。9株菌株中有4株具有较强的促生长性状,在分子水平上鉴定为蜡样芽孢杆菌、velezensis芽孢杆菌、枯草芽孢杆菌和枯草芽孢杆菌亚sp.枯草芽孢杆菌。枯萎芽孢杆菌是鹰嘴豆根际抗bataticola病原菌PGPR的新报道。
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Bacillus valezensis: A New Plant Growth Promoting Rhizobacterium for Plant Growth Promotion and Inhibition of Rhizoctonia bataticola for the Management of Dry Root Rot of Chickpea
Background: Chickpea production is threatened by dry root rot disease in recent years. The disease is caused by soil borne fungus Rhizoctonia bataticola (Taub) Butler with its pycnidial stage Macrophomina phaseolina (Tassi) Goid. Bacillus spp. is a rod shaped and gram negative rhizobacterium which is predominant in the soil. Hence, considering the economic importance of disease, the present investigation was carried out to repress the pathogen by using indigenous Bacillus spp. strains related to antagonistic potential and plant growth promoting traits Methods: Thirty indigenous bacterial PGPR strains were isolated from healthy rhizospheric soil samples of chickpea and their antagonistic potential was studied. Later, the potential ones were examined for plant growth promoting traits. The promising strains were identified at molecular level 16S rDNA. Results: All thirty PGPR strains of rhizospharic Bacillus were potentiality antagonistic against R. bataticola and nine strains showed more than 50 per cent inhibition of the pathogen. Out of nine strains, four strains recorded more growth promoting traits and they were identified at molecular level as Bacillus cereus, Bacillus velezensis, Bacillus subtilis and Bacillus subtilis sub sp. Subtilis. Bacillus valezensis is a new report on rhizosphaeric PGPR against R. bataticola in chickpea.
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来源期刊
Legume Research
Legume Research AGRONOMY-
CiteScore
1.30
自引率
37.50%
发文量
256
审稿时长
6-12 weeks
期刊介绍: Legume Research An International Journal. The Journal is an official publication of Agricultural Research Communication Centre. It is designed to bring out the original research articles on genetics, breeding, physiology, bacterial avtivity, production, quality, biochemistry and seeds of legumes crops. The objective of the journal is to serve as a forum for scientific community to publish their research findings on legumes ans to provide basis for new research. Journal is being scanned in the important indexing and abstracting services.
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