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Nitric oxide represses the Arabidopsis floral transition
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Journal Article
Nitric oxide represses the Arabidopsis floral transition
2004
Overview
The correct timing of flowering is essential for plants to maximize reproductive success and is controlled by environmental and endogenous signals. We report that nitric oxide (NO) repressed the floral transition in Arabidopsis thaliana. Plants treated with NO, as well as a mutant overproducing NO (nox1), flowered late, whereas a mutant producing less NO (nos1) flowered early. NO suppressed CONSTANS and GIGANTEA gene expression and enhanced FLOWERING LOCUS C expression, which indicated that NO regulates the photoperiod and autonomous pathways. Because NO is induced by environmental stimuli and constitutively produced, it may integrate both external and internal cues into the floral decision.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
/ Arabidopsis Proteins - genetics
/ Arabidopsis Proteins - physiology
/ Biological and medical sciences
/ Biology and morphogenesis of the reproductive apparatus. Photoperiodism, vernalisation
/ Botany
/ Carrier Proteins - physiology
/ chloroplast phosphoenolpyruvate/phosphate translocator
/ CO gene
/ FLC gene
/ Flowers
/ Flowers - growth & development
/ Fundamental and applied biological sciences. Psychology
/ Growth
/ Leaves
/ LFY gene
/ light
/ Membrane Proteins - genetics
/ Membrane Proteins - physiology
/ mutants
/ Mutation
/ Nitroprusside - pharmacology
/ Plant physiology and development
/ Plants
/ Saccharomyces cerevisiae Proteins
/ Stimuli
/ Time
/ Vegetative and sexual reproduction, floral biology, fructification
