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- Title
EFFECTS OF EXOGENOUS CaCl2 ON THE PHOTOSYNTHETIC FUNCTION AND ACTIVE OXYGEN METABOLISM OF SALIX VIMINALIS LEAVES UNDER PB STRESS.
- Authors
NING, W.; ZHU, S. Q.; NIAN, H.; YIN, J. H.; AN, B. Y.
- Abstract
In order to provide some basic data for revealing the mechanism of exogenous CaCl2 on improving drought resistance of Salix viminalis seedlings. The experimental results showed that: Spraying exogenous of different CaCl2 concentrations significantly alleviated the damage degree of S. viminalis seedlings leaves caused by heavy metal stress, and the effect of 30 μmol·L-1 CaCl2 was the most significant. Spraying exogenous CaCl2 could regulate stomatal limitation of S. viminalis seedlings leaves under heavy metal stress, which was beneficial to water holding capacity of S. viminalis seedlings leaves under heavy metal stress, and enhanced photosynthetic carbon assimilation capacity of leaves under heavy metal stress; Spraying exogenous CaCl2 can reduce the energy pressure of PSII reaction center by increasing the non-photochemical quenching (NPQ) of leaves of S. viminalis seedlings, alleviate the photoinhibition of PSII, and promote the electron transfer process, especially on the receptor side of PSII; Spraying exogenous CaCl2 effectively reduced the production of reactive oxygen species in leaves of S. viminalis seedlings, as well as the degree of membrane peroxidation, which was also one of the important reasons for alleviating the inhibition of photosynthetic capacity.
- Subjects
WILLOWS; HEAVY metals; CHARGE exchange
- Publication
Applied Ecology & Environmental Research, 2022, Vol 20, Issue 4, p3143
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/2004_31433154