The regulation of accumulation and secretion of several major inorganic cations by Chinese Iris under NaCl stress
| Autor: | Pin-Fang Li, Ying-Ying Xu, Shi-Wen Guo, Shao-Pan Xia |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Physiology Magnesium Sodium Potassium fungi Iris lactea chemistry.chemical_element Salt (chemistry) 04 agricultural and veterinary sciences Calcium 01 natural sciences Salinity chemistry Biochemistry Halophyte 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany Nuclear chemistry |
| Zdroj: | Journal of Plant Nutrition. 41:67-79 |
| ISSN: | 1532-4087 0190-4167 |
| DOI: | 10.1080/01904167.2017.1381726 |
| Popis: | Chinese Iris (Iris lactea Pall. var. chinensis (Fisch.) Koidz.) is a monocotyledonous halophyte, which is considered an important salt-tolerant species. In this study, the plant growth, ion absorption and transportation and leaf secretion characteristics of Iris under sodium chloride (NaCl) stress were investigated using nutrient solutions with four NaCl concentrations ranging from 0 to 300 mmol L−1. The main results indicated that Na+ secretion accounted for 5.7–11.5% of the ion distribution pattern of 90% of the ions accumulated in vivo by Iris. The ion transportation ratio was potassium > magnesium > calcium > sodium, (K+ > Mg2+ > Ca2+ > Na+), K+/Na+, Ca2+/Na+, Mg2+/Na+ in the shoot were greater than those in the root. K–Na and Ca–Na selectivity ratios showed an increasing trend overall. The contribution of salt secretion to the salt tolerance of Iris was tiny, which will be discussed in further research, achieving ion balance in vivo through selective absorption and transportation under salt s... |
| Databáze: | OpenAIRE |
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