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首页> 外文期刊>Symbiosis >Rhizobium cellulosilyticum as a co-inoculant enhances Phaseolus vulgaris grain yield under greenhouse conditions
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Rhizobium cellulosilyticum as a co-inoculant enhances Phaseolus vulgaris grain yield under greenhouse conditions

机译：溶根瘤菌作为助菌剂可提高温室条件下菜豆的谷物产量

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摘要

The Rhizobium-legume symbiosis is a complex partnership with many factors, with initial bacterial colonization of the plant root surface and primary infection as key early stages. Two molecules are strongly involved in these processes: the structural carbohydrate cellulose and the enzyme cellulase, which breaks down the former and allows rhizobia to infect the roots. Here, we report the effect on common bean (Phaseolus vulgaris L.) after co-inoculation of the non-nodulating, cellulase-overproducing strain Rhizobium cellulosilyticum ALA10B2T and the P. vulgaris-nodulating R. leguminosarum strain TPV08. In order to elucidate the effect of combined inoculation with both strains, we designed greenhouse assays, including single inoculation with strain TPV08, co-inoculation with both strains and an uninoculated treatment in non-sterile peat. Chemical fertilizers were not added. Chlorophyll content in the leaves was measured after the flowering stage by spectrophotometry and was considered to be indicative of the nutrient status of the plants. Nodule formation was observed on roots of the inoculated plants, while no nodulation was observed on roots of the uninoculated plants. The results indicate a synergistic effect between the two Rhizobium strains. Co-inoculated plants exhibited significant increases in seed yield and nitrogen content in comparison with the uninoculated control plants and with plants inoculated with a single strain. It is suggested that co-inoculation with strain ALA10B2T greatly increased the efficiency of N fixation by strain TPV08.
机译：根瘤菌-豆类共生是一个复杂的伙伴关系，其影响因素很多，其中植物根部表面的初始细菌定植和主要感染是关键的早期阶段。这些过程主要涉及两个分子：结构性碳水化合物纤维素和纤维素酶，后者分解前者并使根瘤菌感染根。在这里，我们报告非结瘤，纤维素酶高产菌株溶根瘤菌ALA10B2T和结节性假单胞菌根瘤菌豆科菌株TPV08共同接种后对普通豆（菜豆）的影响。为了阐明两种菌株联合接种的效果，我们设计了温室分析方法，包括单株接种TPV08菌株，两种菌株共同接种以及非无菌泥炭的未接种处理。没有添加化肥。在开花阶段之后通过分光光度法测量叶片中的叶绿素含量，并认为其指示植物的营养状况。在接种的植物的根部观察到根瘤形成，而在未接种的植物的根部未观察到根瘤。结果表明两种根瘤菌菌株之间具有协同作用。与未接种的对照植物和接种单个菌株的植物相比，共接种的植物显示出种子产量和氮含量的显着增加。建议与ALA10B2T菌株共同接种可大大提高TPV08菌株对N的固定效率。

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  • 来源
    《Symbiosis》 |2015年第3期|135-141|共7页
  • 作者

    Alexandra Diez-Mendez; Esther Menéndez; Paula García-Fraile; Lorena Celador-Lera; Raúl Rivas; Pedro F. Mateos;

  • 作者单位

    Department of Microbiology and Genetics. Edificio Departamental de Biología Lab 213. Universidad de Salamanca (USAL)">(1);

    Instituto Hispano Luso de Investigaciones Agrarias (CIALE)">(2);

    Department of Microbiology and Genetics. Edificio Departamental de Biología Lab 213. Universidad de Salamanca (USAL)">(1);

    Instituto Hispano Luso de Investigaciones Agrarias (CIALE)">(2);

    Institute of Microbiology Academy of Sciences of the Czech Republic">(3);

    Department of Microbiology and Genetics. Edificio Departamental de Biología Lab 213. Universidad de Salamanca (USAL)">(1);

    Instituto Hispano Luso de Investigaciones Agrarias (CIALE)">(2);

    Department of Microbiology and Genetics. Edificio Departamental de Biología Lab 213. Universidad de Salamanca (USAL)">(1);

    Associated Unit USAL-CSIC (IRNASA)">(4);

    Department of Microbiology and Genetics. Edificio Departamental de Biología Lab 213. Universidad de Salamanca (USAL)">(1);

    Instituto Hispano Luso de Investigaciones Agrarias (CIALE)">(2);

    Associated Unit USAL-CSIC (IRNASA)">(4);

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  • 正文语种 eng
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  • 关键词

    Rhizobial-legume symbioses; Common bean; Cellulase; Cellulose; PGPR; Synergy;

    机译：根瘤菌-豆类共生;普通豆;纤维素酶纤维素;PGPR;协同作用;

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