The role of cell wall integrity maintenance mechanisms in hyperosmotic stress and cell wall damage responses
Authors
Sara Morghen (presenting author) [1]
Francesco Saffioti [1]
Luis Alonso Baez [1]
Dhika Amanda [1]
Michaela Tichá [1]
Thorsten Hamann [1]
Affiliations
- Department of Biology, Faculty of Natural Sciences, Norwegian University of Science and Technology, 7491 Trondheim, Norway
Email (presenting author): sara.morghen@ntnu.no
Keywords
cell wall integrity; FERONIA; THESEUS1; abiotic stress; osmotic stress
Abstract
Abiotic stresses have negative effects on agricultural production. Among them, drought is a major cause of agricultural losses, strongly reducing crop yields. The perception of hyperosmotic stress by plants triggers changes in mechanical properties of cell walls and abscisic acid (ABA) production, which is required for plant adaptation to drought stress. Recent results showed that ABA induction requires the presence of intact cell walls and that the receptor kinase THESEUS1 (THE1) is a negative regulator of ABA production induced by hyperosmotic stress and a positive regulator of jasmonic acid (JA) production caused by cell wall damage (CWD). To investigate the role of the receptor kinases THE1 and FERONIA (FER) in hyperosmotic stress and CWD responses, hormone quantification and genetically encoded reporters for ABA and JA dynamics are used. The latest results of this study will be presented and novel insights on the roles of cell wall integrity maintenance mechanisms in the regulation of hyperosmotic stress and CWD response will be presented.
Funding
European Research Council, ERC HYDROSENSING project 101118769 granted to Thorsten Hamann