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首页> 外文期刊>Dynamic Soil, Dynamic Plant >Rhizobia-Phaseolus lunatus Symbiosis: Importance and Diversity in Tropical Soils - A Review
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Rhizobia-Phaseolus lunatus Symbiosis: Importance and Diversity in Tropical Soils - A Review

机译：根瘤菌-菜豆共生：热带土壤中的重要性和多样性-审查。

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摘要

Phaseolus lunatus (Lima bean) is the second most economically important species of genus Phaseolus and one of the 12 primary grain legumes. The plant presents great rusticity and has the capacity to resist long dry periods, characteristics that are important for tropical regions. P. lunatus, like other legume plants, can establish a symbiosis with soil rhizobia that leads to the development of legume nodules in response to the appropriate nitrogen-fixing bacteria. These symbioses result in biologicalnitrogen fixation (BNF), the process by which atmospheric nitrogen (N_2) is converted into ammonia (NH_3), making it available for legumes plants. The nitrogen-fixing bacteria of the family Rhizobiaceae, including the genera Rhizobium, Sinorhizobium, Mesorhizobium, Allorhizobium, Azorhizobium and Bradyrhizobium, are collectively referred to as rhizobia. In recent years, however other a- and p-proteobacteria have been shown to produce nodules in legumes. However, the rhizobium-P. lunatus symbiosis has scarcely been studied. Recently, some studies have been conducted to evaluate the genetic variability of the rhizobium-P. lunatus symbiosis. These studies have evaluated phenotypic and molecular diversity of rhizobia isolated from soils of several countries. This review describes the main research results in this field.
机译：菜豆（Lima bean）是菜豆属中经济上第二重要的物种，是12种主要豆类中的一种。该植物具有极高的质朴性，并具有抵抗长时间干旱的能力，这对热带地区而言非常重要。象其他豆类植物一样，P。lunatus可以与土壤根瘤菌共生，从而导致豆类根瘤对适当的固氮细菌产生响应。这些共生作用导致生物固氮（BNF），通过该过程，大气中的氮（N_2）转化为氨（NH_3），可用于豆类植物。根瘤菌科的固氮细菌，包括根瘤菌属，中华根瘤菌属，中根瘤菌属，别生根瘤菌，偶氮根瘤菌和缓生根瘤菌，统称为根瘤菌。然而，近年来，已显示其他α-和p-细菌菌在豆类中产生根瘤。但是，根瘤菌-P。几乎没有研究月经共生。最近，已经进行了一些研究以评估根瘤菌-P的遗传变异性。月神共生。这些研究评估了从几个国家的土壤中分离出来的根瘤菌的表型和分子多样性。这篇综述描述了该领域的主要研究成果。

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