September
2005
, Volume
18
, Number
9
Pages
891
-
898
Authors
Gopaljee
Jha
,
R.
Rajeshwari
,
and
Ramesh V.
Sonti
Affiliations
Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad-500 007, India
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RelatedArticle
Accepted 23 May 2005.
Abstract
The type two secretion system (T2S) is important for virulence of a number of gram-negative bacterial plant pathogens. Most of the T2S-secreted proteins that have been characterized to date are involved in degrading different components of plant cell walls. Functional redundancy appears to exist among T2S-secreted proteins because significant effects on virulence are observed only in strains in which multiple secreted proteins are mutated. Several T2S-secreted proteins have been shown to induce plant defense responses, including hypersensitive response-like reactions. Bacterial pathogens can suppress these defense responses, and recent results indicate that suppression is mediated through the type three secretion system.
JnArticleKeywords
Additional keywords:
cell wall-degrading enzymes,
phytopathogenic bacteria,
programmed cell death,
pseudopilus,
sec-dependent pathway.
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ArticleCopyright
© 2005 The American Phytopathological Society