Regulation of the key antioxidant enzymes by developmental processes and environmental stresses in the dark

P. Poór, A. Ördög, Z. Czékus, P. Borbély, Z. Takács, J. Kovács, I. Tari

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The presence of solar radiation is one of the most important environmental factors, which is required for the optimal growth and development of plants. The absence of it (e.g. in the night period or artificially prolonged darkness) can alter the light-dependent signalling and regulation pathways and may induce new defence responses. Antioxidant enzymes as components of the plant defence system play a crucial role in the detoxification of reactive oxygen species (ROS) induced by several stressors; however, their regulation can be different in the light or in the dark. In this review we summarize the current knowledge about the physiological and molecular aspects of dark-modulated key antioxidant enzymes (superoxide dismutase, catalase, and ascorbate peroxidase) in different plant species and discuss their roles in different developmental processes (seedling growth and development or senescence) and in responses to environmental stresses (cold, chilling, heat, and biotic stress). Moreover, the hormonal regulation of respective gene transcription and the changes in activity of various isoenzymes at subcellular level are also summarized. Based on this knowledge, modification of these antioxidant enzymes may be used to increase the yield and stress tolerance of cultivated plants in the changing environment.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalBiologia Plantarum
DOIs
Publication statusAccepted/In press - Jan 25 2018

Fingerprint

antioxidants
enzymes
growth and development
hormonal regulation
cold stress
biotic stress
ascorbate peroxidase
stress tolerance
seedling growth
heat stress
isozymes
reactive oxygen species
catalase
superoxide dismutase
solar radiation
transcription (genetics)
environmental factors
genes
cold treatment

ASJC Scopus subject areas

  • Plant Science
  • Horticulture

Cite this

Regulation of the key antioxidant enzymes by developmental processes and environmental stresses in the dark. / Poór, P.; Ördög, A.; Czékus, Z.; Borbély, P.; Takács, Z.; Kovács, J.; Tari, I.

In: Biologia Plantarum, 25.01.2018, p. 1-10.

Research output: Contribution to journalArticle

Poór, P. ; Ördög, A. ; Czékus, Z. ; Borbély, P. ; Takács, Z. ; Kovács, J. ; Tari, I. / Regulation of the key antioxidant enzymes by developmental processes and environmental stresses in the dark. In: Biologia Plantarum. 2018 ; pp. 1-10.
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