Molecular mechanisms of quenching of reactive oxygen species by proline under stress in plants

  • Matysik J
  • Alia
  • Bhalu B
 et al. 
  • 110

    Readers

    Mendeley users who have this article in their library.
  • 450

    Citations

    Citations of this article.

Abstract

Less than 5% of the total pool of free amino acids in plants under stress-free conditions is provided by proline. In many plants under various forms of. stress, the concentration increases up to 80% of the amino acid pool. This observation raises the question about the molecular mechanisms, making a high proline concentration favourable under stress conditions. Therefore, the literature about the chemical properties of proline is reviewed, linking it to the plant physiological observations. In addition to its role as an osmolyte and a reservoir of carbon and nitrogen, etc. proline has been shown to protect plants against free radical-induced damage. A recent concept that proline accumulation is linked with the quenching of singlet oxygen has inspired us to look at the molecular mechanism of singlet oxygen quenching by proline. In this review, the key properties and the chemical reactivity of proline with singlet oxygen and other reactive oxygen species are discussed.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • J. Matysik

  • Alia

  • B. Bhalu

  • P. Mohanty

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free