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Enhanced salinity tolerance and improved yield properties in Bangladeshi rice Binnatoa through Agrobacterium-mediated transformation of PgNHX1 from Pennisetum glaucum

100%
Islam S. M. T., Tammi R. S., Singla-Pareek S. L., Seraj Z. I.
Acta Physiologiae Plantarum
|
2010
|
tom 32
|
nr 4
Rice yield is severely affected by high-salt concentration in the vicinity of the plant. In an effort to engineer rice for improved salt tolerance Agrobacterium-mediated transformation of rice cv. Binnatoa was accomplished with the Pennisetum glaucum vacuolar Na⁺/H⁺ antiporter gene (PgNHX1) under the constitutive CaMV35S promoter. For the molecular analysis of putative transgenic plants, PCR and RT-PCR were performed. Transgenic rice plants expressing PgNHX1 showed better physiological status and completed their life cycle by setting flowers and seeds in salt stress, while wild-type plants exhibited rapid chlorosis and growth inhibition. Moreover, transgenic rice plants produced higher grain yields than wild-type plants under salt stress. Assessment of the salinity tolerance of the transgenic plants at seedling and reproductive stages demonstrated the potential of PgNHX1 for imparting enhanced salt tolerance capabilities and improved yield.
2
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Immunogenicity of recombinant bacterial antigens expressed as fusion proteins in transgenic rice seeds

64%
Zaman S., Islam S. M. T., Khan M. K., Alam M. M., Uddin M. I., Baby N. I., Islam S., Bhuiyan T. R., Qadri F., Seraj Z. I.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2017
|
tom 98
|
nr 4
3

Effect of the vacuolar Naplus/Hplus antiporter transgene in a rice landrace and a commercial rice cultivar after its insertion by crossing

64%
Biswas S., Razzaque S., Elias S. M., Amin U. S. M., Haque T., Islam S. M. T., Lisa L. A., Naznin F., Rasul N. M., Seraj Z. I.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 01
The vacuolar Na⁺/H⁺ antiporter is known to alleviate saline stress by sequestering Na⁺ in both wildtype Arabidopsis and rice and when over-expressed in many transgenic plants. Here we report on the effect of the NHX1 transgene on the salt tolerance properties it confers to a rice landrace and a commercial cultivar suitable for the dry winter season, but which suffers loss due to seasonal stresses, particularly in the coastal areas. The Nipponbare Na⁺/H⁺ antiporter 1.9 kb cDNA was cloned into pCAMBIA1305.1 under the control of the CaMV35S promoter and transformed into tissue-culture-responsive rice landrace Binnatoa (BA). The best-expressing transgenic line at T2 was found to be significantly tolerant at the seedling stage and was advanced to T3. The transgene was then transferred to the tissue-culture recalcitrant farmer-popular commercial rice genotype, BRRIdhan 28 (BR28) by crossing. The data generated both from semi-quantitative RT-PCR and western blot hybridization revealed that the transgene showed similar expression in the crossbred BR28 plants and BA transgenic line. Comparative stress tolerance tests, however, revealed that the BR28 crossbred lines were significantly less tolerant than its transgenic parent BA at both seedling and reproductive stages. A single successful transgenic event may therefore not show the same performance in the recipient genetic background, if introgressed by crossing.
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