Transcriptional regulation of cell cycle genes in response to abiotic stresses correlates with dynamic changes in histone modifications in maize

PLoS One. 2014 Aug 29;9(8):e106070. doi: 10.1371/journal.pone.0106070. eCollection 2014.

Abstract

The histone modification level has been shown to be related with gene activation and repression in stress-responsive process, but there is little information on the relationship between histone modification and cell cycle gene expression responsive to environmental cues. In this study, the function of histone modifications in mediating the transcriptional regulation of cell cycle genes under various types of stress was investigated in maize (Zea mays L.). Abiotic stresses all inhibit the growth of maize seedlings, and induce total acetylation level increase compared with the control group in maize roots. The positive and negative regulation of the expression of some cell cycle genes leads to perturbation of cell cycle progression in response to abiotic stresses. Chromatin immunoprecipitation analysis reveals that dynamic histone acetylation change in the promoter region of cell cycle genes is involved in the control of gene expression in response to external stress and different cell cycle genes have their own characteristic patterns for histone acetylation. The data also showed that the combinations of hyperacetylation and hypoacetylation states of specific lysine sites on the H3 and H4 tails on the promoter regions of cell cycle genes regulate specific cell cycle gene expression under abiotic stress conditions, thus resulting in prolonged cell cycle duration and an inhibitory effect on growth and development in maize seedlings.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylation
  • Blotting, Western
  • Cell Cycle / genetics
  • Cell Cycle Proteins / genetics*
  • Cell Cycle Proteins / metabolism
  • Cold Temperature
  • Copper Sulfate / pharmacology
  • Flow Cytometry
  • Gene Expression Regulation, Developmental*
  • Gene Expression Regulation, Plant*
  • Histones / metabolism*
  • Hot Temperature
  • Lysine / metabolism
  • Mannitol / pharmacology
  • Plant Proteins / genetics*
  • Plant Roots / genetics
  • Plant Roots / metabolism
  • Promoter Regions, Genetic / genetics
  • Reverse Transcriptase Polymerase Chain Reaction
  • Sodium Chloride / pharmacology
  • Stress, Physiological
  • Zea mays / genetics*
  • Zea mays / growth & development
  • Zea mays / metabolism

Substances

  • Cell Cycle Proteins
  • Histones
  • Plant Proteins
  • Mannitol
  • Sodium Chloride
  • Lysine
  • Copper Sulfate

Grants and funding

This work was supported by the National Natural Science Foundation of China [NSFC (No. 31171186)], Key Grant Project of Chinese Ministry of Education and Hubei Province Natural Science Fund. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.