{"title":"Functional Traits and Their Plastic Response of Bassia dasyphylla under Salt-Alkaline Mixed Stress in a Desert Region, Northwestern China","authors":"X. Li, J. Wang","doi":"10.1134/s1021443723603683","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The plastic response of <i>Bassia dasyphylla</i> (Fisch. & C.A. Mey.) Kuntze functional traits to saline-alkali land habitat and its mechanism were investigated. Two neutral salts, NaCl and Na<sub>2</sub>SO<sub>4</sub>, and two alkali salts, Na<sub>2</sub>CO<sub>3</sub> and NaHCO<sub>3</sub>, were mixed in various ratios according to the varying ranges of salinity and pH in a natural soil, and the response of <i>B. dasyphylla</i> seedlings to salt-alkaline stress was determined. The osmolyte contents, peroxidative damage, antioxidant enzyme activity and plant morphology and biomass were determined. Thirty different salt-alkaline ecological treatments were applied, including ranges of salinity of 50–250 mmol/L and pH values of 7.10–10.19. The soluble sugar, soluble protein, proline, betaine, hydrogen peroxide and malondialdehyde contents, <span>\\({\\text{O}}_{2}^{ - }\\)</span> production rate and cell membrane permeability of <i>B. dasyphylla</i> rose with increases in salt concentration and pH. There were differences between the treatment groups and the control (<i>P</i> < 0.05). The activities of superoxide dismutase, peroxidase and ascorbate peroxidase enzymes initially increased and then decreased, but catalase activity continued to increase. The plant height, main root length, stem thickness, branch number, lateral root number and root, stem and leaf biomass were significantly decreased compared with the control (<i>P</i> < 0.05). In regard to biomass, the proportion of root biomass increased, but the proportions of stem and leaf biomass decreased. The correlations between the salt component ions and the above plant characteristics indicated complex effects of salt composition on the functional characteristics of <i>B. dasyphylla</i>. This study suggests that salt-alkaline environments inhibited the functional characteristics of <i>B. dasyphylla</i> and negatively affected several physiological responses and morphological plasticity.</p>","PeriodicalId":21477,"journal":{"name":"Russian Journal of Plant Physiology","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Plant Physiology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1134/s1021443723603683","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
The plastic response of Bassia dasyphylla (Fisch. & C.A. Mey.) Kuntze functional traits to saline-alkali land habitat and its mechanism were investigated. Two neutral salts, NaCl and Na2SO4, and two alkali salts, Na2CO3 and NaHCO3, were mixed in various ratios according to the varying ranges of salinity and pH in a natural soil, and the response of B. dasyphylla seedlings to salt-alkaline stress was determined. The osmolyte contents, peroxidative damage, antioxidant enzyme activity and plant morphology and biomass were determined. Thirty different salt-alkaline ecological treatments were applied, including ranges of salinity of 50–250 mmol/L and pH values of 7.10–10.19. The soluble sugar, soluble protein, proline, betaine, hydrogen peroxide and malondialdehyde contents, \({\text{O}}_{2}^{ - }\) production rate and cell membrane permeability of B. dasyphylla rose with increases in salt concentration and pH. There were differences between the treatment groups and the control (P < 0.05). The activities of superoxide dismutase, peroxidase and ascorbate peroxidase enzymes initially increased and then decreased, but catalase activity continued to increase. The plant height, main root length, stem thickness, branch number, lateral root number and root, stem and leaf biomass were significantly decreased compared with the control (P < 0.05). In regard to biomass, the proportion of root biomass increased, but the proportions of stem and leaf biomass decreased. The correlations between the salt component ions and the above plant characteristics indicated complex effects of salt composition on the functional characteristics of B. dasyphylla. This study suggests that salt-alkaline environments inhibited the functional characteristics of B. dasyphylla and negatively affected several physiological responses and morphological plasticity.
期刊介绍：
Russian Journal of Plant Physiology is a leading journal in phytophysiology. It embraces the full spectrum of plant physiology and brings together the related aspects of biophysics, biochemistry, cytology, anatomy, genetics, etc. The journal publishes experimental and theoretical articles, reviews, short communications, and descriptions of new methods. Some issues cover special problems of plant physiology, thus presenting collections of articles and providing information in rapidly growing fields. The editorial board is highly interested in publishing research from all countries and accepts manuscripts in English.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
