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Root-Microbe Interactions: The Importance of Protein Secretion

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The interactions between plants and microbes have been widely studied using gene expression studies and small molecule exchange between organisms. For the most part, these studies have focused on aboveground interactions and fewer studies have examined these types of processes belowground. The purpose of this review is to summarize the current literature looking at the interactions between roots and soil microbes, with an emphasis on the exchange of proteins between the organisms. Roots can establish close contact with different microorganisms in the rhizosphere, from pathogens to beneficial bacteria such as nitrogen fixers; recent data indicate that protein exchange is an integral part of these associations. These interactions include the release by roots of defense proteins, proteins involved in bacterial chemotaxis and proteins found inside root border cells, and release of proteins from bacteria that could activate innate immunity in plants. The overall goal of this review is to convey recent proteomic information related to root-microbe exchange to identify potential areas of development to improve agriculture.

Keywords: Aphanomyces euteiches; Brassica napus; Erwinia chrysanthemi; Fusarium graminearum; Glomus mosseae; Glomus versiforme; N-acyl-homoserine lactones; Phytophthora ramorus; Proteomics; Pseudomonas aeruginosa; Sclerotinia sclerotiorum; Sinorhizobium meliloti; Trichoderma harzianum; defense; interaction; microbes; nodulation; pathogenesis; pectate lyases; quorum-sensing; root exudates; rooteomics; symbiosis

Document Type: Research Article


Publication date: December 1, 2010

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  • Current Proteomics research in the emerging field of proteomics is growing at an extremely rapid rate. The principal aim of Current Proteomics is to publish well-timed review articles in this fast-expanding area on topics relevant and significant to the development of proteomics. Current Proteomics is an essential journal for everyone involved in proteomics and related fields in both academia and industry.

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