Eco-physiological characteristics of alfalfa seedlings in response to various mixed salt-alkaline stresses

Journal of Integrative Plant Biology
Yong-Lin PengDe-Li Wang

Abstract

Soil salinization and alkalization frequently co-occur in nature, but little is known about the mixed effects of salt-alkaline stresses on plants. An experiment with mixed salts (NaCl, Na(2)SO(4), NaHCO(3) and Na(2)CO(3)) and 30 salt-alkaline combinations (salinity 24-120 mmol/L and pH 7.03-10.32) treating Medicago sativa seedlings was conducted. The results demonstrated that salinity and alkalinity significantly affected total biomass and biomass components of seedlings. There were interactive effects of salt composition and concentration on biomass (P<or= 0.001). The interactions between salinity and alkalinity stresses led to changes in the root activity along the salinity gradient (P<or= 0.001). The effects of alkalinity on seedling survival rate were more significant than those of salinity, and the seedlings demonstrated some physiological responses (leaf electrolyte leakage rate and proline content) in order to adapt to mixed salt-alkaline stresses. It was concluded that the mixed salt-alkaline stresses, which differ from either salt or alkali stress, emphasize the significant interaction between salt concentration (salinity) and salt component (alkalinity). Further, the effects of the interaction between high alkalinity ...Continue Reading

Citations

Mar 26, 2016·Frontiers in Plant Science·Arafat A Abdel Latef, Lam-Son P Tran
Nov 28, 2012·Journal of Integrative Plant Biology·Xia ZhangTai Wang
Aug 16, 2016·Frontiers in Plant Science·Abdullah J Al-Dakheel, M Iftikhar Hussain
Jul 28, 2016·Frontiers in Plant Science·Yi-Min AnChang-Hong Guo
Dec 26, 2019·Scientific Reports·Adil KhanAbdul Latif Khan
Jan 14, 2021·International Microbiology : the Official Journal of the Spanish Society for Microbiology·Monika Mahesh JangirVani Bhagavatula
Sep 20, 2020·Journal of Environmental Management·Weiying FengHaiyan Chen

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