Responses of key root traits in the genus Oryza to soil flooding mimicked by stagnant, deoxygenated nutrient solution.

ABSTRACT: Excess water can induce flooding stress resulting in yield loss, even in wetland crops such as rice (Oryza). However, traits from species of wild Oryza have already been used to improve tolerance to abiotic stress in cultivated rice. This study aimed to establish root responses to sudden soil flooding among eight wild relatives of rice with different habitat preferences benchmarked against three genotypes of O. sativa. Plants were raised hydroponically, mimicking drained or flooded soils, to assess the plasticity of adventitious roots. Traits included were apparent permeance (PA) to O2 of the outer part of the roots, radial water loss, tissue porosity, apoplastic barriers in the exodermis, and root anatomical traits. These were analysed using a plasticity index and hierarchical clustering

SUBMITTER: Tong S 

PROVIDER: S-EPMC10049916 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature