Vertical Distribution of Sodium in Roots of Rice Plants Exposed to Salinity as Analyzed by Cryo Time-of-Flight Secondary Ion Mass Spectrometry
| Autor: | Jannatul Ferdose, Toshiyuki Kato, Michio Kawasaki, Mitsutaka Taniguchi, Hiroshi Miyake |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Plant Production Science, Vol 14, Iss 3, Pp 215-218 (2011) |
| Druh dokumentu: | article |
| ISSN: | 1343-943X 1349-1008 |
| DOI: | 10.1626/pps.14.215 |
| Popis: | Distribution of Na+ along the root axis under salinity stress was analyzed in two rice (Oryza sativa L.) cultivars with different salt resistance (salt-sensitive IR 24 and salt-resistant Pokkali). Rice plants were grown hydroponically and NaCl was applied with nutrient solution at concentrations of 0, 25 and 50 mM for 7 d after germination. The distribution of Na+ in roots under salinity was analyzed by the cryo time-of-flight secondary ion mass spectrometry (cryo TOF-SIMS). The Na+ content in the root was higher in salt-sensitive IR 24 than in salt-resistant Pokkali under NaCl stress. The content was highest at the root tip and was decreased basipetally along the root axis. The difference in Na+ content between the cultivars was apparent in all regions from the root tip. |
| Databáze: | Directory of Open Access Journals |
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