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Transcriptional regulation of plant sugar transporter genes by beneficial rhizobacteria
Journal of Plant Interactions ( IF 3.2 ) Pub Date : 2021-09-17 , DOI: 10.1080/17429145.2021.1974582
Antoine Desrut 1 , Florence Thibault 1 , Jesús Mercado-Blanco 2 , Pierre Coutos-Thévenot 1 , Cécile Vriet 1
Affiliation  

ABSTRACT

In their natural environment, plants live in close interaction with complex populations of microorganisms, including rhizobacteria species commonly referred to as ‘Plant Growth Promoting Rhizobacteria’ (PGPR). A growing body of evidence demonstrates the importance of sugar transport in plant pathogen resistance and in plant-microorganism mutualistic symbioses. Using an in vitro experimental system, including the model plant species Arabidopsis thaliana, two PGPR strains (Pseudomonas simiae PICF7 and Burkholderia phytofirmans PsJN) and a non-PGPR strain (Escherichia coli), we conducted a comprehensive set of phenotypic and gene expression analyses to explore the role and regulation of sugar transporter genes in plant-PGPR interactions. In physical contact with the seedling roots, or solely via the emission of bacterial volatile compounds, the two PGPR strains tested improved the growth and development of the Arabidopsis seedlings and altered the expression of several plant sugar transporter genes. Our results also revealed both conserved and strain-specific transcriptional regulation mechanisms.



中文翻译:

有益根际细菌对植物糖转运蛋白基因的转录调控

摘要

在自然环境中,植物与复杂的微生物种群密切相互作用,包括通常称为“促进植物生长的根际细菌”(PGPR) 的根际细菌。越来越多的证据表明糖转运在植物病原体抗性和植物-微生物共生中的重要性。使用体外实验系统,包括模式植物拟南芥、两种 PGPR 菌株(Pseudomonas simiae PICF7 和Burkholderia phytofirmans PsJN)和一种非 PGPR 菌株(大肠杆菌)),我们进行了一套全面的表型和基因表达分析,以探索糖转运蛋白基因在植物-PGPR 相互作用中的作用和调控。通过与幼苗根部的物理接触,或仅通过细菌挥发性化合物的排放,测试的两种 PGPR 菌株改善了拟南芥幼苗的生长和发育,并改变了几种植物糖转运蛋白基因的表达。我们的结果还揭示了保守和菌株特异性转录调控机制。

更新日期:2021-09-19
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