Safdar Hussain Shah
Not Available
Satoshi Tobita
Not Available
Mariko Shono
ABSTRACT
The influence of NaCl and CaCl2 on growth, ion accumulation and proline accumulation was investigated in cell suspension cultures of rice (Oryza sativa L. cv.Tapei-309). The relative growth rate of suspensions was significantly greater at high calcium level (5.0 mM) than at low (0.5 mM) in response to 150 mM NaCl. Salinity caused a large increase in Na+ and K+ contents of suspensions. K+ content was not affected by the levels of calcium but Na+ content was significantly reduced at high calcium and showed a lower Na+/K+ ratios. The proline level of cells increased in response to NaCl but the increase was 4.9-fold at high and 1.4-fold at low calcium levels respectively. Actinomycin-D had little effect on proline accumulation in stressed cells at high calcium. In contrast proline accumulation was severely inhibited by cycloheximide. It is suggested that in NaCl stressed suspension cultures of rice, calcium participate in the regulation of proline accumulation at the level of mRNA translation.
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Safdar Hussain Shah, Satoshi Tobita and Mariko Shono, 2001. Supplemental Calcium Regulates Proline Accumulation in NaCl-stressed Suspension Cultures of Oryza sativa L. At the Level of mRNA Translation. Pakistan Journal of Biological Sciences, 4: 707-710.
DOI: 10.3923/pjbs.2001.707.710
URL: https://scialert.net/abstract/?doi=pjbs.2001.707.710
DOI: 10.3923/pjbs.2001.707.710
URL: https://scialert.net/abstract/?doi=pjbs.2001.707.710
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