The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance
Rice is an important produced cereal in the world. We evaluated the effect of salt compositions including NaCl and Na2SO4 on suberin lamellae as a major barrier to radial ion and water movements in two rice genotypes representing contrasting salt tolerance levels under salinity stress. Two rice geno...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2012/769196 |
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| author | M. R. Momayezi A. R. Zaharah M. M. Hanafi |
| author_facet | M. R. Momayezi A. R. Zaharah M. M. Hanafi |
| author_sort | M. R. Momayezi |
| collection | DOAJ |
| description | Rice is an important produced cereal in the world. We evaluated the effect of salt compositions including NaCl and Na2SO4 on suberin lamellae as a major barrier to radial ion and water movements in two rice genotypes representing contrasting salt tolerance levels under salinity stress. Two rice genotypes, Fajr as salt tolerant and Khazar as salt sensitive, were transplanted in sand culture under glasshouse condition. Rice seedlings were treated with five salt compositions including NaCl, Na2SO4, 1 : 1, 1 : 2, and 2 : 1 molar ratios for 40 days. It was proven that suberin lamellae in endodermis of root cell wall were thickened with Na2SO4 treatment. The results demonstrated that the number of passage cells was higher in Fajr genotype than that in Khazar genotype under saline condition. Calcium concentration in root tissue decreased as the SO42- concentration in root media increased. It can be concluded that Fajr genotype is able to keep some passage cells open to maintain Ca2+ uptake. The Ca2+/Na+ ratio in shoot tissue can be also a reliable index for the early recognition of salt stress in these rice genotypes. |
| format | Article |
| id | doaj-art-0327c330870c48719293e2711e344677 |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-0327c330870c48719293e2711e3446772025-02-03T05:51:58ZengWileyInternational Journal of Agronomy1687-81591687-81672012-01-01201210.1155/2012/769196769196The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt ToleranceM. R. Momayezi0A. R. Zaharah1M. M. Hanafi2Agronomy Department, Faculty of Agriculture, Varamin-Pishva Branch, Islamic Azad University, Varamin, IranLand Resource Management Department, Universiti Putra Malaysia, 43400 Serdang, Selangor, MalaysiaLand Resource Management Department, Universiti Putra Malaysia, 43400 Serdang, Selangor, MalaysiaRice is an important produced cereal in the world. We evaluated the effect of salt compositions including NaCl and Na2SO4 on suberin lamellae as a major barrier to radial ion and water movements in two rice genotypes representing contrasting salt tolerance levels under salinity stress. Two rice genotypes, Fajr as salt tolerant and Khazar as salt sensitive, were transplanted in sand culture under glasshouse condition. Rice seedlings were treated with five salt compositions including NaCl, Na2SO4, 1 : 1, 1 : 2, and 2 : 1 molar ratios for 40 days. It was proven that suberin lamellae in endodermis of root cell wall were thickened with Na2SO4 treatment. The results demonstrated that the number of passage cells was higher in Fajr genotype than that in Khazar genotype under saline condition. Calcium concentration in root tissue decreased as the SO42- concentration in root media increased. It can be concluded that Fajr genotype is able to keep some passage cells open to maintain Ca2+ uptake. The Ca2+/Na+ ratio in shoot tissue can be also a reliable index for the early recognition of salt stress in these rice genotypes.http://dx.doi.org/10.1155/2012/769196 |
| spellingShingle | M. R. Momayezi A. R. Zaharah M. M. Hanafi The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance International Journal of Agronomy |
| title | The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance |
| title_full | The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance |
| title_fullStr | The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance |
| title_full_unstemmed | The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance |
| title_short | The Effects of Cation Ratios on Root Lamella Suberization in Rice (Oryza sativa L.) with Contrasting Salt Tolerance |
| title_sort | effects of cation ratios on root lamella suberization in rice oryza sativa l with contrasting salt tolerance |
| url | http://dx.doi.org/10.1155/2012/769196 |
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