alexa Salicylic acid alleviates adverse effects of heat stress on photosynthesis through changes in proline production and ethylene formation.


Journal of Plant Biochemistry & Physiology

Author(s): Khan MI, Iqbal N, Masood A, Per TS, Khan NA

Abstract Share this page

Abstract We investigated the potential of salicylic acid (SA) in alleviating the adverse effects of heat stress on photosynthesis in wheat (Triticum aestivum L.) cv WH 711. Activity of ribulose 1,5-bisphosphate carboxylase (Rubisco), photosynthetic-nitrogen use efficiency (NUE), and net photosynthesis decreased in plants subjected to heat stress (40 °C for 6 h), but proline metabolism increased. SA treatment (0.5 mM) alleviated heat stress by increasing proline production through the increase in γ-glutamyl kinase (GK) and decrease in proline oxidase (PROX) activity, resulting in promotion of osmotic potential and water potential necessary for maintaining photosynthetic activity. Together with this, SA treatment restricted the ethylene formation in heat-stressed plants to optimal range by inhibiting activity of 1-aminocyclopropane carboxylic acid (ACC) synthase (ACS). This resulted in improved proline metabolism, N assimilation and photosynthesis. The results suggest that SA interacts with proline metabolism and ethylene formation to alleviate the adverse effects of heat stress on photosynthesis in wheat.
This article was published in Plant Signal Behav and referenced in Journal of Plant Biochemistry & Physiology

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 3rd Global Summit on Plant Science
    August 07-09, 2017 Rome, Italy
  • 2nd International Conference on Biochemistry
    Sep 21-22, 2017 Macau, Hong Kong

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version