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综述了近十年来国内外关于豆科作物根际土壤促生菌中氢氧化细菌的研究进展,讨论了根瘤释放H2促进作物生长的可能机制.与豆科作物进行轮作、间作是提高土壤肥力、增加作物产量的一项传统的农业耕作方式.对于这种耕作方式优势的机制研究,过去大多数主要集中在土壤氮(N)元素含量的提高.而近期研究表明土壤氢氧化细菌以豆科作物根瘤菌在固氮过程中释放的H2为能量来源进行化能自养改变土壤微生物种群结构.一些土壤氢氧化细菌通过产生1-氨基环丙烷-1-羧酸脱氨酶和根瘤菌毒素抑制植物体内乙烯的合成,促进作物生长.此外,本文进一步讨论了利用现代分子生物学方法研究氢氧化细菌促进作物生长的途径.
In this paper, the research progresses on hydrogen-oxidizing bacteria in rhizosphere soils of rhizosphere of leguminous crops at home and abroad were reviewed, and the possible mechanism of H2 emission promoted by root nodules was discussed.The crop rotation and intercropping with leguminous crops could improve soil fertility, A traditional farming method to increase crop yields The mechanism used to study this dominant mode of farming has mostly been focused on increasing soil nitrogen (N) content, and recent studies have shown that soil hydrobiotics are based on leguminous crops Rhizobium releases nitrogen during nitrogen fixation as a source of energy to autotrophically alter the population structure of soil micro-organisms. Some soil hydrobiotics inhibit plant in vivo by producing 1-aminocyclopropane-1-carboxylic acid deaminase and rhizobium toxin Ethylene synthesis, promote crop growth.In addition, this article further discusses the use of modern molecular biology methods to study the hydrogen-oxidizing bacteria to promote crop growth pathways.