ABILITY OF FREE-LIVING CELLS OF BRADYRHIZOBIUM-JAPONICUM TO DENITRIFY IN SOILS
ABILITY OF FREE-LIVING CELLS OF BRADYRHIZOBIUM-JAPONICUM TO DENITRIFY IN SOILS
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DOI：
10.1007/bf00709652
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发表时间：
1989-01-01
影响因子：
6.5
通讯作者：
BREMNER, JM
中科院分区：
文献类型：
--
作者：
BREITENBECK, GA;BREMNER, JM
评估六种大豆根瘤菌（Bradyrhizobium japonicum USDA 76、94、110、122、123和135）的自由生活细胞在五种土壤中反硝化硝酸盐的能力的实验表明，尽管某些大豆根瘤菌菌株具有在厌氧条件下快速反硝化土壤中硝酸盐的能力，但其数量不太可能田间条件下常见的大豆根瘤菌足以显着影响土壤反硝化的程度或产物。我们的一般结论是，当根瘤菌反硝化菌株以自由生活细胞形式存在于土壤中时，反硝化能力向根瘤菌或根瘤菌-豆科植物共生体传递的优势（如果有的话）不会被植物有效氮损失的增加所抵消。
Experiments of assess the ability of free-living cells of six strains of soybean rhizobia (Bradyrhizobium japonicum USDA 76, 94, 110, 122, 123 and 135) to denitrify nitrate in five soils showed that although some strains of B. japonicum have the capacity to rapidly denitrify nitrate in soils under anaerobic conditions, it is unlikely that the numbers of soybean rhizobia commonly found under field conditions was sufficient to significantly influence either the extent or the products of denitrification in soil. It is our general conclusion that the advantages, if any, that the ability to denitrify conveys to rhizobia or to the rhizobia-legume symbiosis are not offset by increased losses of plant-available N when denitrifying strains of rhizobia are present as free-living cells in soil.