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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The diversity of citrus endophytic bacteria and their interactions with Xylella fastidiosa and host plants

Full text
Author(s):
Azevedo, Joao Lucio ; Araujo, Welington Luiz ; Lacava, Paulo Teixeira
Total Authors: 3
Document type: Journal article
Source: GENETICS AND MOLECULAR BIOLOGY; v. 39, n. 4, p. 476-491, OCT-DEC 2016.
Web of Science Citations: 9
Abstract

Abstract The bacterium Xylella fastidiosa is the causal agent of citrus variegated chlorosis (CVC) and has been associated with important losses in commercial orchards of all sweet orange [Citrus sinensis (L.)] cultivars. The development of this disease depends on the environmental conditions, including the endophytic microbial community associated with the host plant. Previous studies have shown that X. fastidiosa interacts with the endophytic community in xylem vessels as well as in the insect vector, resulting in a lower bacterial population and reduced CVC symptoms. The citrus endophytic bacterium Methylobacterium mesophilicum can trigger X. fastidiosa response in vitro, which results in reduced growth and induction of genes associated with energy production, stress, transport, and motility, indicating that X. fastidiosa has an adaptive response to M. mesophilicum. Although this response may result in reduced CVC symptoms, the colonization rate of the endophytic bacteria should be considered in studies that intend to use this endophyte to suppress CVC disease. Symbiotic control is a new strategy that uses symbiotic endophytes as biological control agents to antagonize or displace pathogens. Candidate endophytes for symbiotic control of CVC must occupy the xylem of host plants and attach to the precibarium of sharpshooter insects to access the pathogen. In the present review, we focus on interactions between endophytic bacteria from sweet orange plants and X. fastidiosa, especially those that may be candidates for control of CVC. (AU)

FAPESP's process: 98/16262-2 - The role of xanthan gum-associated genes in the pathogenicity and virulence of Xylella fastidiosa and potential strategies for biological control of citrus CVC
Grantee:João Lúcio de Azevedo
Support Opportunities: Genome Research Grants
FAPESP's process: 12/24217-6 - Endophytic microorganisms: identification of genes related to microbial interactions
Grantee:Welington Luiz de Araújo
Support Opportunities: Regular Research Grants