Nitric oxide represses the Arabidopsis floral transition.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • He, Y; Tang, R-H; Hao, Y; Stevens, RD; Cook, CW; Ahn, SM; Jing, L; Yang, Z; Chen, L; Guo, F; Fiorani, F; Jackson, RB; Crawford, NM; Pei, Z-M

Published Date

  • September 24, 2004

Published In

Volume / Issue

  • 305 / 5692

Start / End Page

  • 1968 - 1971

PubMed ID

  • 15448272

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

Digital Object Identifier (DOI)

  • 10.1126/science.1098837


  • eng

Conference Location

  • United States