Effect of silicon spraying on rice photosynthesis and antioxidant defense system on cadmium accumulation.

ABSTRACT: Cadmium (Cd) pollution is a serious threat to food safety and human health. Minimizing Cd uptake and enhancing Cd tolerance in plants are vital to improve crop yield and reduce hazardous effects to humans. In this study, we designed three Cd concentration stress treatments (Cd1: 0.20 mg·kg^-1, Cd2: 0.60 mg·kg^-1, and Cd3: 1.60 mg·kg^-1) and two foliar silicon (Si) treatments (CK: no spraying of any material, and Si: foliar Si spraying) to conduct pot experiments on soil Cd stress. The results showed that spraying Si on the leaves reduced the Cd content in brown rice by 4.79-42.14%. Si application increased net photosynthetic rate (Pn) by 1.77-4.08%, stomatal conductance (Gs) by 5.27-23.43%, transpiration rate (Tr) by 2.99-20.50% and intercellular carbon dioxid

SUBMITTER: Chen H 

PROVIDER: S-EPMC11222525 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature