A conserved chloroplast retrograde signal regulates stomatal closure for drought tolerance in plants

  • Chenchen Zhao

Western Sydney University thesis: Doctoral thesis

Abstract

Stomata are the pores on leaves that are responsible for transpiration and exchange of gases with the surrounding atmosphere. In agriculture, about 90% of transpirational water loss is via these tiny pores of various crops. Therefore, understanding the mechanisms involved in stomatal closure will potentially provide important clues for breeding crops with high water use efficiency and drought tolerance. This thesis aimed to understand mechanisms from both physiological and molecular aspects of a chloroplast retrograde signal [3'-phosphoadenosine-5'-phosphate (PAP) and 3',5'- bisphosphate nucleotidase 1 (SAL1)] that enhances plant drought tolerance by regulating stomatal closure.
Date of Award2019
Original languageEnglish

Keywords

  • plants
  • crops
  • drought tolerance
  • chloroplasts
  • Arabidopsis
  • stomata
  • ion channels
  • abiotic stress

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