The role of epigenetic processes in controlling flowering time in plants exposed to stress

Mahmoud W. Yaish, Joseph Colasanti, Steven J. Rothstein

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

Plants interact with their environment by modifying gene expression patterns. One mechanism for this interaction involves epigenetic modifications that affect a number of aspects of plant growth and development. Thus, the epigenome is highly dynamic in response to environmental cues and developmental changes. Flowering is controlled by a set of genes that are affected by environmental conditions through an alteration in their expression pattern. This ensures the production of flowers even when plants are growing under adverse conditions, and thereby enhances transgenerational seed production. In this review recent findings on the epigenetic changes associated with flowering in Arabidopsis thaliana grown under abiotic stress conditions such as cold, drought, and high salinity are discussed. These epigenetic modifications include DNA methylation, histone modifications, and the production of micro RNAs (miRNAs) that mediate epigenetic modifications. The roles played by the phytohormones abscisic acid (ABA) and auxin in chromatin remodelling are also discussed. It is shown that there is a crucial relationship between the epigenetic modifications associated with floral initiation and development and modifications associated with stress tolerance. This relationship is demonstrated by the common epigenetic pathways through which plants control both flowering and stress tolerance, and can be used to identify new epigenomic players.

Original languageEnglish
Pages (from-to)3727-3735
Number of pages9
JournalJournal of Experimental Botany
Volume62
Issue number11
DOIs
Publication statusPublished - Jul 2011

Fingerprint

Genetic Epigenesis
Epigenomics
epigenetics
flowering
stress tolerance
Histone Code
seed productivity
Abscisic Acid
Indoleacetic Acids
Plant Growth Regulators
Chromatin Assembly and Disassembly
Plant Development
Droughts
Salinity
DNA methylation
DNA Methylation
MicroRNAs
microRNA
Growth and Development
Arabidopsis

Keywords

  • Epigenetics
  • flowering
  • stress
  • vernalization

ASJC Scopus subject areas

  • Plant Science
  • Physiology

Cite this

The role of epigenetic processes in controlling flowering time in plants exposed to stress. / Yaish, Mahmoud W.; Colasanti, Joseph; Rothstein, Steven J.

In: Journal of Experimental Botany, Vol. 62, No. 11, 07.2011, p. 3727-3735.

Research output: Contribution to journalArticle

Yaish, Mahmoud W. ; Colasanti, Joseph ; Rothstein, Steven J. / The role of epigenetic processes in controlling flowering time in plants exposed to stress. In: Journal of Experimental Botany. 2011 ; Vol. 62, No. 11. pp. 3727-3735.
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