Isolation of Phosphate Solubilizing Bacteria and Fungi from Rhizospheres soil from Banana Plants and its Effect on the Growth of Amaranthus cruentus L.
Isolation of Phosphate Solubilizing Bacteria and Fungi from Rhizospheres soil from Banana Plants and its Effect on the Growth of Amaranthus cruentus L.
复制标题
香蕉根际土壤解磷细菌和真菌的分离及其对苋菜生长的影响。
DOI：
10.9790/3008-0530611
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
H. Deepthi
中科院分区：
文献类型：
--
作者：
T. Dhanya;H. Deepthi
养分管理是植物成功栽培的重要因素之一。生物肥料能影响作物的质量和数量。磷酸盐溶解度低是各种土壤中限制植物生长的重要因素之一。许多微生物可以提高磷酸盐的溶解度，但对其磷溶解能力的大小知之甚少。研究了香蕉不同根际土壤样品中溶磷菌和真菌的本地种群数量及其对菠菜的影响，比较了不同根际土壤样品对溶磷菌和真菌的影响。本研究重点研究了香蕉根际土壤样品中细菌和真菌的磷酸盐增溶能力，发现曲霉属（234.12 mm）是主要的磷酸盐增溶剂，其次是枯草芽孢杆菌（160.82 mm），其次是铜绿假单胞菌（126.11），青霉菌（99.02）和微球菌（89）。4. 在本研究中，有效的增溶剂被鉴定为黑曲霉和枯草芽孢杆菌。在此基础上，对不同pH和温度条件下潜在增溶剂的磷酸盐增溶效果进行了优化。结果表明，细菌和真菌在pH为3.0，比温度分别为28℃和37℃时，对磷酸盐的增溶作用最大。
Nutrient management is one of the most important factors in successful cultivation of plants. Biofertilizers can affect the quality and quantity of crop. Low phosphate solubility is one of the most important factors limiting the plant growth in various soils. Many microorganisms can enhance phosphate solubility, but little is known about the magnitude of their phosphorus solubilizing ability. The native populations of phosphate-solubilizing bacteria and fungi were studied in different rhizospheres soil samples obtained from banana plant and its effect on spinach plant (Amaranthus cruentus L.) in order to compare the results. The present study focuses on the phosphate-solubilizing capacity of bacteria and fungi in rhizospheres soil samples obtained from banana plant, revealing the dominance of Aspergillus species (234.12 mm) as major phosphate solubilizers, along with Bacillus subtilis (160.82 mm) followed by Pseudomonas aeruginosa 126.11, Penicillium sp., 99.02 and Micrococcus sp., 89. 4. In the present study potent solubilizers were identified as A. niger and B. subtilis. Hence an attempt was made to optimize the phosphate solubilization of the potential solubilizers at different pH with temperature. It is found out that both bacteria and fungi showed maximum phosphate solubilization at pH 3.0 with its specific temperature at 28 0 C and 37 0 C.