A Haplotype-Specific Resistance Gene Regulated by BONZAI1 Mediates Temperature-Dependent Growth Control in Arabidopsis

Plant growth homeostasis and defense responses are regulated by BONZAI1 (BON1), an evolutionarily conserved gene. Here, we show that growth regulation by BON1 is mediated through defense responses. BON1 is a negative regulator of a haplotype-specific Resistance (R) gene SNC1. The bon1-1 loss-of-func...

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Published inThe Plant cell Vol. 16; no. 4; pp. 1060 - 1071
Main Authors Yang, Shuhua, Hua, Jian
Format Journal Article
LanguageEnglish
Published United States American Society of Plant Biologists 01.04.2004
Subjects
air temperature
Amino Acid Sequence
Arabidopsis
Arabidopsis - genetics
Arabidopsis - growth & development
Arabidopsis Proteins
Arabidopsis Proteins - genetics
Arabidopsis thaliana
Base Sequence
binding proteins
Carrier Proteins
Carrier Proteins - genetics
Cloning, Molecular
defense mechanisms
Disease resistance
DNA, Plant
DNA, Plant - genetics
Feedback
fungal diseases of plants
Gene expression regulation
Genes
Genes, Plant
Genetic mutation
genetics
growth & development
Membrane Proteins
Membrane Proteins - genetics
Models, Biological
Molecular Sequence Data
mutants
Mutation
nucleotide sequences
Pathogens
Phenotype
Phenotypes
Phytophthora nicotianae var. parasitica
Plant cells
Plant Diseases
Plant Diseases - genetics
Plant growth
Plant growth regulators
plant pathogenic fungi
plant proteins
Plants
salicylic acid
Sequence Homology, Amino Acid
structural genes
Temperature
Temperature control
Up regulation
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Summary:Plant growth homeostasis and defense responses are regulated by BONZAI1 (BON1), an evolutionarily conserved gene. Here, we show that growth regulation by BON1 is mediated through defense responses. BON1 is a negative regulator of a haplotype-specific Resistance (R) gene SNC1. The bon1-1 loss-of-function mutation activates SNC1, leading to constitutive defense responses and, consequently, reduced cell growth. In addition, a feedback amplification of the SNC1 gene involving salicylic acid is subject to temperature control, accounting for the regulation of growth and defense by temperature in bon1-1 and many other mutants. Thus, plant growth homeostasis involves the regulation of an R gene by BON1 and the intricate interplay between defense responses and temperature responses.
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To whom correspondence should be addressed. E-mail jh299@cornell.edu; fax 607-255-5407.
The author responsible for distribution of materials integral to the findings presented in this article in accordance with the policy described in the Instructions for Authors (www.plantcell.org) is: Jian Hua (jh299@cornell.edu).
Article, publication date, and citation information can be found at www.plantcell.org/cgi/doi/10.1105/tpc.020479.
These authors contributed equally to this paper.
ISSN:1040-4651
1532-298X
DOI:10.1105/tpc.020479