Potential of Rhizobium and Bradyrhizobium species as plant growth promoting rhizobacteria on non-legumes:: Effect on radishes (Raphanus sativus L.)
Potential of Rhizobium and Bradyrhizobium species as plant growth promoting rhizobacteria on non-legumes:: Effect on radishes (Raphanus sativus L.)
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DOI：
10.1023/a:1004326910584
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发表时间：
1998-07-01
期刊：
影响因子：
4.9
通讯作者：
Lalande, R
中科院分区：
文献类型：
--
作者：
Antoun, H;Beauchamp, CJ;Lalande, R
慢生根瘤菌和根瘤菌是豆科植物上形成固氮根瘤的共生细菌。这些细菌与促进植物生长的根际细菌（PGPR）具有相同的特性。与其他PGPR一样，诺维辛诱导细菌能够定殖于非豆科植物的根部并产生植物激素、铁载体和HCN。它们还对许多植物病原真菌表现出拮抗作用。以萝卜为模式植物，研究了根瘤诱导细菌作为PGPR的潜力。在266个测试菌株中，有3%被发现是氰，而大多数（83%）产生铁载体。58%的菌株产生吲哚3-乙酸（IAA）和54%的可溶性磷。一些细菌物种的检查被发现有一个有害的影响，而其他的是中性的或显示出刺激作用的萝卜。大豆213株慢生根瘤菌对萝卜干物质产量的影响最大，达60%，而N44株则是最有害的，可使萝卜干物质产量降低44%。在生长箱中进行的第二次植物接种试验显示，只有B的菌株Tal 629。施氮处理显著提高萝卜干物质产量（15%）。这表明，特定的慢生根瘤菌有潜力被用作PGPR对非豆科植物。
Bradyrhizobia and rhizobia are symbiotic bacterial partners forming nitrogen fixing nodules on legumes. These bacteria share characteristics with plant growth promoting rhizobacteria (PGPR). Nodule inducing bacteria, like other PGPR, are capable of colonizing the roots of non-legumes and produce phytohormones, siderophores and HCN. They also exhibit antagonistic effects towards many plant pathogenic fungi. The potential of nodule inducing bacteria to function as PGPR, was examined by using radish as a model plant. Three percent of the 266 strains tested were found to be cyanogens, while a majority (83%) produced siderophores. Fifty eight percent of the strains produced indole 3-acetic acid (IAA) and 54% solubilized phosphorus. Some of the bacterial species examined were found to have a deleterious effect while others were neutral or displayed a stimulatory effect on radishes. Bradyrizobium japonicum strain Soy 213 was found to have the highest stimulatory effect (60%), and an arctic strain (N44) was the most deleterious, causing a 44% reduction in radish dry matter yield. A second plant inoculation test, performed in growth cabinets, revealed that only strain Tal 629 of B. japonicum significantly increased (15%) the dry matter yield of radish. This indicates that specific bradyrhizobia have the potential to be used as PGPR on non-legumes.