Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Rapid changes in leaf elongation, ABA and water status during the recovery phase following application of water stress in two durum wheat varieties differing in drought tolerance
Plant Physiology and Biochemistry, Volume 49, No. 10, Year 2011
Notification
URL copied to clipboard!
Description
This study aims to investigate the role of Abscisic acid (ABA) in water potential and turgor variations as well as growth recovery during the first phase of a rapid water stress induced by PEG6000. Two wheat varieties (Triticum durum L.), MBB (more tolerant) and OZ (less productive under drought), were grown in aerated nutrient solutions. Leaf elongation kinetics of the growing leaf 3 was estimated using LVDT. Water potential was measured using a pressure chamber; osmotic potential was estimated from expressed sap of elongation zone, turgor pressure of the same zone of leaf three was estimated directly by pressure probe. Growth rapidly ceased for a period of about one hour after the addition of PEG, gradual recovery was then observed for about 2. h. A significant difference was found in the % recovery of Leaf Elongation Rate (LER) and ABA between the two varieties, leading to better water status in MBB compared to OZ. The results of this study showed the possible role of ABA on growth resumption by the increase of relative water content and turgor via osmotic adjustment during the stress period in the leaves, which indicates the importance of OA in the resumption of LER even in the short term under conditions of water deficit. Full recovery of turgor but not of LER at the end stress period suggested the possible effect on cell wall extensibility (hardening) even at short term resulting from the rapid accumulation of ABA. © 2011 Elsevier Masson SAS.
Authors & Co-Authors
Mahdid, Mohamed
Algeria, Algiers
Université Des Sciences et de la Technologie Houari Boumediene
France, Montpellier
Ecophysiologie Des Plantes Sous Stress Environnementaux Lepse
Kameli, Abdelkrim
Algeria, Algiers
Ministere de L'enseignement Superieure et de la Recerche Scientifique
Ehlert, Christina
France, Montpellier
Ecophysiologie Des Plantes Sous Stress Environnementaux Lepse
Simonneau, Thierry
France, Montpellier
Ecophysiologie Des Plantes Sous Stress Environnementaux Lepse
Statistics
Citations: 28
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/j.plaphy.2011.08.002
ISSN:
09819428
Research Areas
Environmental