SOLUBILIZATION OF ROCK PHOSPHATES BY RHIZOBIUM AND BRADYRHIZOBIUM
SOLUBILIZATION OF ROCK PHOSPHATES BY RHIZOBIUM AND BRADYRHIZOBIUM
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DOI：
10.1007/bf02814530
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发表时间：
1994-01-01
影响因子：
2.6
通讯作者：
ABDALLA, MH
中科院分区：
文献类型：
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作者：
ABDALLA, MH
在含有NH 4Cl或KNO 3的培养基中测定了根瘤菌和慢生根瘤菌菌株从羟基磷灰石中溶解磷酸盐的能力。培养基中存在的NK 4+导致较高的溶解磷酸盐相比，存在的KNO 3，与R leguminosarium bv. viceae菌株TAL 1236和1402，其在含有KNO 3或NH 4Cl的培养基中溶解相当量的磷酸盐。这些结果表明，这些菌株采用两种不同的磷酸盐溶解机制，一种取决于NH 4+的存在，另一种不需要NH 4+的存在。温度和通气（O-2需求）的最佳值分别为30 ℃和4.2 Hz（振荡频率）。苜蓿根瘤菌TAL 1236在非无菌土壤中对磷矿粉有很好的溶解作用。
The ability of Rhizobium and Bradyrhizobium strains to solubilize phosphate from hydroxyapatite was determined in a medium containing NH4Cl or KNO3. The presence of NK4+ in the medium resulted in higher solubilization of phosphate as compared to the presence of KNO3, with the exception of R leguminosarium bv. viceae strain TAL 1236 and 1402 which solubilized comparable amounts of phosphate in a medium containing either KNO3 or NH4Cl. These results suggest that the strains employ two different mechanisms for phosphate solubilization, one depending on the presence of NH4+, the other not requiring its presence. Temperature and aeration (O-2 demand) optima were 30 degrees C and 4.2 Hz (shaking frequency), respectively. In nonsterile soil the tested strain (R meliloti TAL 1236) was very effective in solubilizing rock phosphate.