Affiliation:
1. Jiangsu University
2. Yanbian University
3. The University of Sydney
Abstract
Abstract
Aegilops tauschii Coss. (2n = 2x = 14, DD) is a weed of wheat, competes for resources, performs better against different abiotic stresses, and is a rich genetic material source for wheat crop improvement programs. The effects of different drought stress levels on physiological and biochemical parameters and the expression profile of the drought resistance gene DRB were examined through greenhouse experiments. The physiological parameters (plant height, dry weight biomass, plant height, and leaf area-related parameters) fluctuated under different drought stress levels. Photosynthetic parameters (maximum (Fo’) and minimum (F’m) fluorescence, photochemical ((ΦPSII)), and non-photochemical quenching (qN)) were also affected by different drought stress levels, and their efficiency fluctuated with water availability. In the biochemical analysis, shallow significant changes occurred in peroxidase (POD), catalase (CAT), and proline content, while malondialdehyde (MDA) showed variation under different drought stress conditions. In the DREB gene expression analysis, eight populations showed high expression profiles compared to the control conditions in Ae. tauschii. The expression profiles in Ae. tauschii showed a high fold increase compared to the control condition, and DREB gene expression correlated with the changes in physiological and biochemical parameters.
Publisher
Research Square Platform LLC
Reference65 articles.
1. Manure amendment can reduce rice yield loss under extreme temperatures;Zhu X;Commun Earth Environ,2022
2. ZmERF21 directly regulates hormone signaling and stress-responsive gene expression to influence drought tolerance in maize seedlings;Wang Z;Plant Cell Environ,2022
3. Climate change and groundwater overdraft impacts on agricultural drought in India: Vulnerability assessment, food security measures and policy recommendation;Roy P;Sci Total Environ,2022
4. Proteomic analysis of the meristematic root zone in contrasting genotypes reveals new insights in drought tolerance in rice;Abdirad S,2022
5. Maize responses challenged by drought, elevated daytime temperature and arthropod herbivory stresses: A physiological, biochemical and molecular view;Chávez-Arias CC,2021