Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses
Leymus chinensis has extensive ecological adaptability and can grow well in saline-alkaline soils. The knowledge about tolerance mechanisms of L. chinensis could be base for utilization of saline-alkaline soils and grassland restoration and rebuilding. Two neutral salts (NaCl : Na2SO4 = 9 : 1) and t...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/213401 |
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| author | Xiaoyu Li Junfeng Wang Jixiang Lin Ying Wang Chunsheng Mu |
| author_facet | Xiaoyu Li Junfeng Wang Jixiang Lin Ying Wang Chunsheng Mu |
| author_sort | Xiaoyu Li |
| collection | DOAJ |
| description | Leymus chinensis has extensive ecological adaptability and can grow well in saline-alkaline soils. The knowledge about tolerance mechanisms of L. chinensis could be base for utilization of saline-alkaline soils and grassland restoration and rebuilding. Two neutral salts (NaCl : Na2SO4 = 9 : 1) and two alkaline salts (NaHCO3 : Na2CO3 = 9 : 1) with concentration of 0, 100, and 200 mmol/L were used to treat potted 35-day-old seedlings with rhizome growth, respectively. After 10 days, the biomass and number of daughter shoots all decreased, with more reduction in alkali than in salt stress. The rhizome biomass reduced more than other organs. The number of daughter shoots from rhizome was more than from tillers. Under both stresses, Na+ contents increased more in rhizome than in other organs; the reduction of K+ content was more in underground than aerial tissue. Anion ions or organic acids were absorbed to neutralize cations. Na+ content in stem and leaf increased markedly in high alkalinity (200 mmol/L), with accumulation of soluble sugar and organic acids sharply. Rhizomes help L. chinensis to adapt to saline and low alkaline stresses by transferring Na+. However, rhizomes lost the ability to prevent Na+ transport to aerial organs under high alkalinity, which led to severe growth inhibition of L. chinensis. |
| format | Article |
| id | doaj-art-515478c0bbe54c2fa1ec1c6cc30713f6 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-515478c0bbe54c2fa1ec1c6cc30713f62025-08-20T03:36:38ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/213401213401Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali StressesXiaoyu Li0Junfeng Wang1Jixiang Lin2Ying Wang3Chunsheng Mu4Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, ChinaKey Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin Province 130024, ChinaKey Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin Province 130024, ChinaKey Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin Province 130024, ChinaKey Laboratory of Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun, Jilin Province 130024, ChinaLeymus chinensis has extensive ecological adaptability and can grow well in saline-alkaline soils. The knowledge about tolerance mechanisms of L. chinensis could be base for utilization of saline-alkaline soils and grassland restoration and rebuilding. Two neutral salts (NaCl : Na2SO4 = 9 : 1) and two alkaline salts (NaHCO3 : Na2CO3 = 9 : 1) with concentration of 0, 100, and 200 mmol/L were used to treat potted 35-day-old seedlings with rhizome growth, respectively. After 10 days, the biomass and number of daughter shoots all decreased, with more reduction in alkali than in salt stress. The rhizome biomass reduced more than other organs. The number of daughter shoots from rhizome was more than from tillers. Under both stresses, Na+ contents increased more in rhizome than in other organs; the reduction of K+ content was more in underground than aerial tissue. Anion ions or organic acids were absorbed to neutralize cations. Na+ content in stem and leaf increased markedly in high alkalinity (200 mmol/L), with accumulation of soluble sugar and organic acids sharply. Rhizomes help L. chinensis to adapt to saline and low alkaline stresses by transferring Na+. However, rhizomes lost the ability to prevent Na+ transport to aerial organs under high alkalinity, which led to severe growth inhibition of L. chinensis.http://dx.doi.org/10.1155/2014/213401 |
| spellingShingle | Xiaoyu Li Junfeng Wang Jixiang Lin Ying Wang Chunsheng Mu Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses The Scientific World Journal |
| title | Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses |
| title_full | Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses |
| title_fullStr | Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses |
| title_full_unstemmed | Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses |
| title_short | Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses |
| title_sort | rhizomes help the forage grass leymus chinensis to adapt to the salt and alkali stresses |
| url | http://dx.doi.org/10.1155/2014/213401 |
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