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首页> 外文期刊>Journal of pharmacology & toxicology. >Diversity of Bacteria and Fungi in the Gut and Cast of the Tropical Earthworm Glyphodrillus tuberosuslsolated from Conventional and Organic Rice Fields
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Diversity of Bacteria and Fungi in the Gut and Cast of the Tropical Earthworm Glyphodrillus tuberosuslsolated from Conventional and Organic Rice Fields

机译：从常规稻田和有机稻田中分离出来的热带Earth结核菌肠道和铸型中细菌和真菌的多样性

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摘要

A comparative study of the bacterial and fungal diversity in the gut and cast of Glyphodrillus tuberosus, isolated from organic and conventional rice fields in Orissa state, India was done in different seasons for a period of two years from 2007 to 2009. Isolation of the strains was done by serial dilution method on incubation of the inoculated plates at 28癈 for 72 h for fungi and at 37degC for 24 h for bacteria. Isolated strains were identified as Bacillus sp., Pseudomonas sp., Staphylococcus sp., Bacillus subtilis, Bacillus lentus, Azotobacter sp., Micrococcus sp., Flavobacterium sp., Acinetobacter sp., Brevibacterium sp. and Thiobacillus sp., while the molds identified were Aspergillus niger, Aspergillus flavus, Fusarium sp., Penidllium sp. and Rhizopus sp. Microbial load was observed significantly higher (p<0.01) in gut sections and cast of the worm than in un-ingested soils. The earthworm was found to constitute a microhabitat enriched in microbes capable of growth and activity. Numbers of bacteria and fungi were observed significantly higher (p<0.01) in the gut section, worm cast and undigested soil of organic rice field in comparison to conventional one. Soil pH and percent moisture did not show significant differences between the two management systems. Season wise comparison showed that irrespective of farming systems bacterial and fungal load were maximum in rainy season than in the other and was attributed to high soil moisture content, which is an important limiting factor in tropical soil.
机译：从印度奥里萨邦有机稻田和常规稻田中分离出的甘草甘蓝型肠和铸型中细菌和真菌多样性的比较研究是在不同季节进行的，时间为2007年至2009年，为期两年。通过连续稀释法，将接种平板在28℃下对真菌培养72小时，在37℃下对细菌培养24小时。分离的菌株被鉴定为芽孢杆菌属，假单胞菌属，葡萄球菌属，枯草芽孢杆菌，慢芽孢杆菌，固氮菌属，微球菌属，黄杆菌属，不动杆菌属，短杆菌属。鉴定出的霉菌是黑曲霉，黄曲霉，镰刀菌属，Penidllium菌。和根霉在未消化的土壤中，肠道部分和蠕虫的微生物含量显着更高（p <0.01）。发现worm是一种富含能够生长和活动的微生物的微生境。与常规的相比，在有机稻田的肠段，蠕虫和未消化的土壤中观察到细菌和真菌的数量明显更高（p <0.01）。两种管理系统之间的土壤pH值和水分百分比没有显着差异。按季节进行的比较表明，不管耕作系统如何，雨季的细菌和真菌负荷都比其他季节最大，这归因于土壤水分含量高，这是热带土壤中的重要限制因素。

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