Transcriptional regulation of plant sugar transporter genes by beneficial rhizobacteria

Journal of Plant Interactions

Jesús Mercado-Blanco¹  Antoine Desrut²  Florence Thibault²  Cécile Vriet²  Pierre Coutos-Thévenot² 

[1] Departamento de Protección de Cultivos, Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spai;Laboratoire Ecologie et Biologie des Interactions, UMR CNRS 7267, Université de Poitiers, 86073 Poitiers Cedex 9, Franc;

关键词: Plant Growth Promoting Rhizobacteria;    Arabidopsis thaliana;    sugar transport;    volatile compounds;   

DOI  :  10.1080/17429145.2021.1974582

来源: Taylor & Francis

【 摘 要 】

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.

【 授权许可】

CC BY