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结瘤使沙棘的落叶延迟。Nodulation delayed the falling-leaf of H. rhamnoides.

这一减少一般是与结瘤的减少相对应。This reduction was generally coincidental with reduced nodulation.

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根瘤菌结瘤基因表达后诱导产生结瘤因子。Nodulation factors are induced when nodulation genes of Rhizobium are expressed.

交叉结瘤试验发现，它既可以在苜蓿上又能在大豆上结瘤固氮。Nodulation experiments showed that both soybean and alfalfa were nodulated by XJ96077 effectively.

然而，“起动氮”是否会增加根瘤和生物固氮的问题是复杂的，它受多种因素影响。The issue whether starter N will increase nodulation and BNF is, however, complicated by several factors.

只有通过有效结瘤和生物固氮增加有效氮，施用磷肥才有效应。Only when availability of N was increased through effective nodulation and BNF was there a response to applied P.

和T4SS-依赖的效应子的受体是什么，它们是否能增强或是抑制在特定宿主植物上的结瘤作用？What are the targets of T3SS- and T4SS-dependent effectors that either enhance or impair nodulation of certain hosts?

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尽管不同豆类作物种对氮的反应不同，但施氮肥会减少豆类作物结瘤和生物固氮量。Although relative response to N by legume species may differ, N fertilization will reduce nodulation and BNF by legumes.

但在2178中未检测到以上与EPS合成相关蛋白的差异表达，也未检测到其它与结瘤共生相关的蛋白。But neither the proteins related to synthesis of EPS nor proteins related to symbiotic nodulation was detected in strain 2178.

研究了接种根瘤菌时，氮肥水平对大豆结瘤固氮和产量影响的小区试验。These strains were used for further study for influence of nitrogen levels on their nodulation and nitrogen fixation efficiency.

具有不同性质和肥力水准的紫色土，明显影响到桤木的结瘤和固氮。The purplish soils with the different properties and fertility had obvious influence on nodulation and nitrogen fixation of the alder.

结瘤因子是由根瘤菌产生的一类信号分子，它们在结瘤的起始阶段发挥着十分重要的作用。Nod factors are a novel general class of signal molecules produced by rhizobia, which play a key function in the initial steps of nodulation.

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推测可能是由于水稻中缺少了这些豆科结瘤素基因，导致水稻不能结瘤固氮。It was suggested that the lack of these leguminous nodulin genes in rice might result in its disablility for nodulation and nitrogen fixation.

与对照幼苗相比，混合污泥的土壤中生长的幼苗田间发芽、分枝状况及其他生长参数均发生了显著变化。Field germination, nodulation status and growth parameters were varied significantly in the soil amended with sludges in comparison to control.

本文探测了无机肥对苗圃内培养的印度黄檀生长和结瘤的影响。A study was conducted to test the influence of different inorganic fertilizers on the nodulation and growth of Dalbergia sissoo grown in the nursery.

任何一种提高豆类作物产量潜力的管理策略只要有足够的根瘤菌供充分结瘤用就可以提高生物固氮。Any management strategy that increases yield potential of the legume will increase BNF provided sufficient rhizobia are available for adequate nodulation.

根瘤菌的结瘤基因与竞争结瘤基因在根瘤菌与植物共生结瘤的过程中起着关键的作用。Nodulation genes and genes essential for nodulation competitiveness of Rhizobium play a very important role in the Rhizobium and plant symbiotic nodulation.

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本文将探讨诱变对根瘤菌抗春雷霉素突变的作用，并对获得的抗性突变株的生物固氮特性进行分析。This paper would explore the mutagenesis of Rhizobium mutants resistant to kasugamycin, and analyse the nodulation and fixation nitrogen character of the mutants.

在盆栽条件下比较研究了转基因重组根瘤菌与出发菌和参照菌的结瘤与共生固氮效率。Plant pot experiments were carried out for the recipient strains and their transconjugants to compare their nodulation ability and symbiotic nitrogen fixation efficiency.

根瘤菌结瘤基因的表达调控是一个复杂的过程，本文将简要地介绍这方面的研究成果。Nodulation gene expression and regulation of Rhizobium is a very complicated subject. In this paper, we would give a brief introduction the research advances on this area.