Loading content, please wait..
loading..
Logo
Version 3.22
or
Publication Type J
Authors Li, J. S., T. Hussain, X. H. Feng, K. Guo, H. Y. Chen, C. Yang and X. J. Liu
Title Comparative study on the resistance of Suaeda glauca and Suaeda salsa to drought, salt, and alkali stresses
Source Ecological Engineering
Language English
Author Keywords Suaeda glauca Suaeda salsa Salt stress Alkali stress Drought stress Artificial revegetation osmotic adjustment phragmites-australis salinity tolerance ionic balance growth water reclamation germination photosynthesis restoration Environmental Sciences & Ecology Engineering
Abstract Suaeda glauca and Suaeda salsa are annual chenopod herbs that grow well in saline-alkali lands, and they share a number of morphological and physiological traits. We found that the natural distributions of these two halophytes were regionally heterogeneous in the saltmarsh of the Bohai coast, China. In the present study, habitat surveys and laboratory tests were conducted to examine the adaptability of S. glauca and S. salsa in variable environments. The habitat survey showed that S. glauca preferred to establish in soil with a lower moisture, lower EC, and higher pH as compared to S. salsa, suggesting that the adaptability of S. glauca and S. salsa to drought, salt, and alkali conditions varies. In the laboratory, these abiotic stresses were simulated at varying degrees by hydroponic culture. Plant biomass, water content, cations and anions distribution were measured after 10 days treatments. The results showed that (1) the inhibitory effect of the drought treatment on S. salsa shoot fresh weight and water content was less than that on S. glauca. Low and moderate drought treatments inhibited the root growth of S. glauca but promoted S. salsa root growth with Mg2+ and SO42- accumulation. (2) S. glauca and S. salsa were both highly resistant to salinity, and their adaptive strategies were similar. The optimum NaCl concentration for S. salsa was 200 mM, higher than that of 100 mM for S. glauca, and a greater K+ deficiency was observed in S. glauca roots under high salinity treatment. (3) Although high alkali stress was destructive to S. glauca and S. salsa, low alkali treatment promoted the plants root growth, and this promotion in S. glauca was greater than that in S. salsa. Furthermore, low and moderate alkali treatments significantly increased Ca2+ and Mg2+ contents in S. glauca root but had little effect in S. salsa. These results indicated that S. salsa was more tolerant to drought and salt stresses than S. glauca but less tolerant to alkalinity. The resistance variation between the two species was mainly due to their root adaptability and the potential cations regulation. Moreover, our study suggests that S. salsa is an optimal species for the artificial revegetation in high saline land, while S. glauca is more adaptable to alkali land.
Author Address [Li, Jingsong; Feng, Xiaohui; Guo, Kai; Chen, Huanyu; Yang, Ce; Liu, Xiaojing] Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Key Lab Soil Ecol, Beijing, Peoples R China. [Li, Jingsong; Guo, Kai; Chen, Huanyu; Yang, Ce; Liu, Xiaojing] Univ Chinese Acad Sci, Beijing, Peoples R China. [Hussain, Tabassum] Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi, Pakistan. Liu, XJ (reprint author), Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Key Lab Soil Ecol, Beijing, Peoples R China. xjliu@sjziam.ac.cn
ISSN 0925-8574
ISBN 0925-8574
29-Character Source Abbreviation Ecol. Eng.
Publication Date Dec
Year Published 2019
Volume 140
Beginning Page 9
Digital Object Identifier (DOI) 10.1016/j.ecoleng.2019.105593
Unique Article Identifier WOS:000489618600003
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed