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Comparative Genomics, Pangenome, and Phylogenomic Analyses of Brenneria spp., and Delineation of Brenneria izadpanahii sp. nov
Ist Teil von
Phytopathology, 2021-01, Vol.111 (1), p.78-95
Ort / Verlag
United States
Erscheinungsjahr
2021
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
species are bacterial plant pathogens mainly affecting woody plants. Association of all members with devastating disorders (e.g., acute oak decline in Iran and United Kingdom) are due to adaptation and pathogenic behavior in response to host and environmental factors. Some species, including
.
,
.
, and
.
, also show endophytic residence. Here we show that all species including novel
sp. are closely related. Gene-based and genome/pangenome-based phylogeny divide the genus into two distinct lineages,
clades A and B. The two clades were functionally distinct and were consistent with their common and special potential activities as determined via annotation of functional domains. Pangenome analysis demonstrated that the core pathogenicity factors were highly conserved, an
gene cluster encoding a type III secretion system was found in all species except
.
. An extensive repertoire of candidate virulence factors was identified. Comparative genomics indicated a repertoire of plant cell wall degrading enzymes, metabolites/antibiotics, and numerous prophages providing new insights into
-host interactions and appropriate targets for further characterization. This work not only documented the genetic differentiation of
species but also delineates a more functionally driven understanding of
by comparison with relevant
thereby substantially enriching the extent of information available for functional genomic investigations.