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首页> 外文期刊>Journal of Experimental Botany >Members of the ethylene signalling pathway are regulated in sugarcane during the association with nitrogen-fixing endophytic bacteria
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Members of the ethylene signalling pathway are regulated in sugarcane during the association with nitrogen-fixing endophytic bacteria

机译：在与固氮内生细菌结合的过程中，甘蔗中乙烯信号通路的成员受到调节

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摘要

Nitrogen-fixing bacteria have been isolated from sugarcane in an endophytic and beneficial interaction that promotes plant growth. In this work, for the first time, the involvement of ethylene signalling in this interaction was investigated by molecular characterizing members of this pathway in sugarcane. The expression pattern of a putative ethylene receptor (SCER1) and two putative ERF transcription factors (SCERF1 and SCERF2) show exclusive modulation in plants inoculated with the diazotrophic endophytes. The gene expression profile of SCER1, SCERF1, and SCERF2 is differentially regulated in sugarcane genotypes that can establish efficient or inefficient associations with diazotrophic micro-organisms, exhibiting high or low biological nitrogen fixation (BNF) rates, respectively. In addition, SCER1, SCERF1, and SCERF2 expression is different in response to interactions with pathogenic and beneficial micro-organisms. Taken together, that data suggest that SCER1, SCERF1, and SCERF2 might participate in specific ethylene signalling cascade(s) that can identify a beneficial endophytic association, modulating sugarcane responses toward the diazotrophic endophytes.
机译：已经通过促进植物生长的内生和有益相互作用从甘蔗中分离了固氮细菌。在这项工作中，第一次，通过分子表征甘蔗中该途径的成员研究了乙烯信号参与这种相互作用。假定的乙烯受体（SCER1）和两个假定的ERF转录因子（SCERF1和SCERF2）的表达模式在接种重氮营养性内生菌的植物中显示出独家调节作用。 SCER1，SCERF1和SCERF2的基因表达谱在甘蔗基因型中受到差异调节，这些基因型可以与重氮营养微生物建立有效或无效的关联，分别表现出高或低的生物固氮率（BNF）。此外，响应与病原性和有益微生物的相互作用，SCER1，SCERF1和SCERF2的表达也不同。两者合计，这些数据表明SCER1，SCERF1和SCERF2可能参与特定的乙烯信号级联，这些级联可以识别有益的内生缔合，从而调节甘蔗对重氮营养内生菌的反应。

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