December
2001
, Volume
14
, Number
12
Pages
1,453
-
1,457
Authors
Ping
He
,
1
,
2
Randall F.
Warren
,
1
Tiehan
Zhao
,
1
Libo
Shan
,
1
,
2
Lihuang
Zhu
,
2
Xiaoyan
Tang
,
1
and
Jian-Min
Zhou
1
Affiliations
1Department of Plant Pathology, 4024 Throckmorton Plant Sciences Center, Kansas State University, Manhattan 66506, U.S.A.; 2Institute of Genetics, Chinese Academy of Sciences, Beijing 100101
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RelatedArticle
Accepted 30 July 2001.
Abstract
The tomato Pti5 gene encodes a pathogen-inducible ethylene response element-binding protein-like transcription factor that interacts with the disease resistance gene product Pto. Overexpression of Pti5 or Pti5-VP16, a translational fusion with a constitutive transcriptional activation domain, in tomato enhanced resistance to Pseudomonas syringae pv. tomato. Constitutive expression of Pti5 or Pti5-VP16 did not affect the basal level of pathogenesis-related gene expression, but it accelerated pathogen-induced expression of GluB and Catalase. The results demonstrate a positive role of Pti5 in defense gene regulation and disease resistance and suggest that a pathogen-activated posttran-scriptional regulatory step is necessary for the pathogen induction of the defense gene expression.
JnArticleKeywords
Additional keywords:
bacterial infection,
GCC box,
general resistance,
transgenic plants.
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ArticleCopyright
© 2001 The American Phytopathological Society
