Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/179874
Title: Salt tolerance in Machilus faberi: elucidating growth and physiological adaptations to saline environments
Authors: Mo, Qiong
Liu, Yang
Wei, Haohui
Jiang, Liyuan
Wu, En
Lin, Ling
Yang, Qihong
Yu, Xiaoying
Yan, Lihong
Li, Yanlin
Keywords: Medicine, Health and Life Sciences
Issue Date: 2024
Source: Mo, Q., Liu, Y., Wei, H., Jiang, L., Wu, E., Lin, L., Yang, Q., Yu, X., Yan, L. & Li, Y. (2024). Salt tolerance in Machilus faberi: elucidating growth and physiological adaptations to saline environments. Biology, 13(2), 75-. https://dx.doi.org/10.3390/biology13020075
Journal: Biology 
Abstract: Adversity stress is the main environmental factor limiting plant growth and development, including salt and other stress factors. This study delves into the adaptability and salt tolerance mechanisms of Machilus faberi Hemsl, a species with potential for cultivation in salinized areas. We subjected the plants to various salt concentrations to observe their growth responses and to assess key physiological and biochemical indicators. The results revealed that under high salt concentrations (500 and 700 mmol-1/L), symptoms such as leaf yellowing, wilting, and eventual death were observed. Notably, plant height and shoot growth ceased on the 14th day of exposure. Chlorophyll content (a, b, total a + b, and the a/b ratio) initially increased but subsequently decreased under varying levels of salt stress. Similarly, the net photosynthetic rate, stomatal conductance, leaf water content, and root activity significantly declined under these conditions. Moreover, we observed an increase in malondialdehyde levels and relative conductivity, indicative of cellular damage and stress. The activity of superoxide dismutase and ascorbate peroxidase initially increased and then diminished with prolonged stress, whereas peroxidase activity consistently increased. Levels of proline and soluble protein exhibited an upward trend, contrasting with the fluctuating pattern of soluble sugars, which decreased initially but increased subsequently. In conclusion, M. faberi exhibits a degree of tolerance to salt stress, albeit with growth limitations when concentrations exceed 300 mmol-1/L. These results shed light on the plant's mechanisms of responding to salt stress and provide a theoretical foundation for its cultivation and application in salt-affected regions.
URI: https://hdl.handle.net/10356/179874
ISSN: 2079-7737+
DOI: 10.3390/biology13020075
Schools: School of Biological Sciences 
Rights: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SBS Journal Articles

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