Response of Microorganisms in Alfalfa Rhizosphere to Microbial Inoculation

IF 0.8 4区 生物学 Q3 AGRONOMY Legume Research Pub Date : 2020-10-13 DOI:10.18805/LR-514
S. Andjelkovič, J. Radović, S. Babić, T. Vasić, S. Djuric, D. Stamenov, T. H. Jafari
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Abstract

Background: Various microorganisms that can have a positive or negative effect on plant development are present in the rhizospheric soil of alfalfa. The research aimed to investigate the impact of two nitrogen-fixing bacteria and two species of the phytopathogen fungus Colletotrichum on the abundance of aminoheterotrophs, nitrifying and denitrifying bacteria in the rhizosphere of three cultivars of alfalfa.Methods: The experiment was carried in vegetation pots as three factorial, where the first factor was alfalfa cultivar (Affinity+Z, K-28 and Perry), the second was the isolate of phytopathogen fungus Colletotrichum: C. trifolii (isolate Coll 4) and C. destructivum (two isolates: Coll-11 and Coll 657); and the third was the variant of bacterial inoculation (Azotobacter chroococcum and Sinorhizobium meliloti). The number of microorganisms was determined by introducing a diluted soil suspension into proper media and counted per one gram of absolutely dry soil.Result: According to the Fisher test applied inoculation microbial inoculation with nitrogen-fixing bacteria and phytopathogen fungus had different effects on the abundance of examined microorganisms in rizospheric soil of different alfalfa cultivars.
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苜蓿根际微生物对微生物接种的响应
背景:紫花苜蓿根际土壤中存在着对植物发育有积极或消极影响的各种微生物。研究了两种固氮菌和两种植物病原菌炭疽菌对3个苜蓿品种根际氨异养菌、硝化菌和反硝化菌丰度的影响。方法:采用三因子试验方法,以苜蓿品种亲和+Z、K-28和Perry为第一因子,以植物病原菌炭黑菌(C. trifolii, Coll 4)和破坏菌(C. destructivum, Coll 11和Coll 657)为第二因子;三是细菌接种变异(嗜绿固氮杆菌和嗜绿中华根瘤菌)。微生物的数量是通过将稀释的土壤悬浮液引入适当的培养基中并计算每克绝对干燥的土壤的数量来确定的。结果:根据Fisher试验,采用微生物接种法接种固氮菌和植物病原菌对不同苜蓿品种土壤中微生物丰度的影响不同。
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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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