Increasing Nutrient Solution pH Alleviated Aluminum-Induced Inhibition of Growth and Impairment of Photosynthetic Electron Transport Chain in Citrus sinensis Seedlings
Joint Authors
Qi, Yi-Ping
Chen, Li-Song
Yang, Tao-Yu
Cai, Li-Ya
Yang, Lin-Tong
Lai, Ning-Wei
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-27
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Although the physiological and molecular responses of Citrus to Al-toxicity or low pH have been examined in some details, little information is available on Citrus responses to pH and aluminum (Al) interactions.
Citrus sinensis seedlings were irrigated for 18 weeks with nutrient solution at a concentration of 0 or 1 mM AlCl3•6H2O and a pH of 2.5, 3.0, 3.5, or 4.0.
Thereafter, biomass, root, stem, and leaf concentrations of Al and nutrients, leaf gas exchange, chlorophyll a fluorescence (OJIP) transients, and related parameters were investigated to understand the physiological mechanisms underlying the elevated pH-induced alleviation of Citrus toxicity.
Increasing the nutrient solution pH from 2.5 to 4.0 alleviated the Al-toxic effects on biomass, photosynthesis, OJIP transients and related parameters, and element concentrations, uptake, and distributions.
In addition, low pH effects on the above physiological parameters were intensified by Al-toxicity.
Evidently, a synergism existed between low pH and Al-toxicity.
Increasing pH decreased Al uptake per root dry weight and its concentration in roots, stems, and leaves and increased nitrogen, phosphorus, calcium, magnesium, sulfur, and boron uptake per plant and their concentrations in roots, stems, and leaves.
This might be responsible for the elevated pH-induced alleviation of growth inhibition and the impairment of the whole photosynthetic electron transport chain, thus preventing the decrease of CO2 assimilation.
American Psychological Association (APA)
Yang, Tao-Yu& Cai, Li-Ya& Qi, Yi-Ping& Yang, Lin-Tong& Lai, Ning-Wei& Chen, Li-Song. 2019. Increasing Nutrient Solution pH Alleviated Aluminum-Induced Inhibition of Growth and Impairment of Photosynthetic Electron Transport Chain in Citrus sinensis Seedlings. BioMed Research International،Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1128291
Modern Language Association (MLA)
Yang, Tao-Yu…[et al.]. Increasing Nutrient Solution pH Alleviated Aluminum-Induced Inhibition of Growth and Impairment of Photosynthetic Electron Transport Chain in Citrus sinensis Seedlings. BioMed Research International No. 2019 (2019), pp.1-17.
https://search.emarefa.net/detail/BIM-1128291
American Medical Association (AMA)
Yang, Tao-Yu& Cai, Li-Ya& Qi, Yi-Ping& Yang, Lin-Tong& Lai, Ning-Wei& Chen, Li-Song. Increasing Nutrient Solution pH Alleviated Aluminum-Induced Inhibition of Growth and Impairment of Photosynthetic Electron Transport Chain in Citrus sinensis Seedlings. BioMed Research International. 2019. Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1128291
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128291