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Dr. Ranjetta Poobathy

Lecturer,
School of Biological Science

Qualifications:

  • Ph.D. in Biotechnology (Universiti Sains Malaysia, 2017)
  • M.Sc. in Biotechnology (Universiti Sains Malaysia, 2012)
  • B. Sc. (Hons.) in Biotechnology (AIMST University, 2008)

Teaching and Research Experience:

  • Teaching: 2008 – present
    • Tutored / mentored final year project and postgraduate students in Universiti Sains Malaysia (2008-2017)
    • QIU: August 2018 – present
  • Research: 2008 – present (Universiti Sains Malaysia)

Major Research Interest

  • Plant science
  • Plant tissue culture
  • Plant conservation
  • Cryopreservation
  • Secondary metabolism

Teaching interests

  • All subjects related to biotechnology
Committee involvement
  • Biological Safety Officer (BSO) of Institutional Biosafety Committee of QIU
Publications
  • Sreeramanan, S., Vinod, B., Ranjetta, P., Sasidharan, S., & Xavier, R. (2009). Chemotaxis Movement and Attachment of Agrobacterium tumefaciens to Phalaenopsis violacea Orchid Tissues: An Assessment of Early Factors Influencing the Efficiency of Gene Transfer. Tropical Life Sciences Research, 20 (1), 39-49.
  • Antony, J. J. J., Uma Rani, S., Chan, L. K., Ranjetta, P., Khoddamzadeh, A. A., & Sreeramanan, S. (2011). Selected potential encapsulation-dehydration parameters on Dendrobium Bobby Messina protocorm-like bodies using TTC analysis. Australian Journal of Crop Sciences, 5 (13), 1817-1822.
  • Gnasekaran, P., Poobathy, R., Mahmood, M., Samian, M. R., & Subramaniam, S. (2012). Effects of complex organic additives on improving the growth of PLBs of Vanda Kasem’s delight Australian Journal of Crop Science, 6 (8), 1245-1248.
  • Julkifle, A. L., Samian, R., Poobathy, R., & Subramaniam, S. (2012). Chemotactic movement and bacterial attachment of Agrobacterium tumefaciens towards protocorm-like bodies (PLBs) of Dendrobium sonia-28. Australian Journal of Crop Science, 6 (7), 1188-1191.
  • Ranjetta, P., Nor’Ain, A. H., Advina Lizah, J., & Sreeramanan, S. (2012). Vitrification and histological analyses of protocorm-like bodies of Vanda Kaseem’s Delight orchid Australian Journal of Crop Sciences, 6 (2), 219-224.
  • Antony, J. J. J., Burkhan, H., Sinniah, U. R., Poobathy, R., & Subramaniam, S. (2013). Effect of PVS2 vitrification on Brassidium ‘Shooting Star’ orchid using protocorm-like bodies (PLBs). Australian Journal of Crop Science, 7 (8), 1078.
  • Poobathy, R., Izwa, N., Julkifle, A. L., & Subramaniam, S. (2013). Cryopreservation of Dendrobium sonia-28 using an alternative method of PVS2 droplet freezing. Emirates Journal of Food and Agriculture, 25 (7), 531-538.
  • Poobathy, R., Sinniah, U. R., Mahmood, M., & Subramaniam, S. (2013). Refinement of a vitrification protocol for protocorm-like bodies of Dendrobium sonia-28. Turkish Journal of Botany, 37 (5), 940-949.
  • Poobathy, R., Sinniah, U. R., Rathinam, X., & Subramaniam, S. (2013). Histology and scanning electron microscopy observations of cryopreserved protocorm-like bodies of Dendrobium sonia-28. Turkish Journal of Biology, 37 (2), 191-198.
  • Poobathy, R., Sinniah, U. R., Xavier, R., & Subramaniam, S. (2013). Catalase and Superoxide Dismutase Activities and the Total Protein Content of Protocorm-Like Bodies of Dendrobium sonia-28 Subjected to Vitrification. Applied Biochemistry and Biotechnology, 170 (5), 1066-1079.
  • Poobathy, R., Xavier, R., Sinniah, U. R., & Subramaniam, S. (2013). Molecular stability of protocorm-like bodies of Dendrobium sonia-28 after encapsulation-dehydration and vitrification. Australian Journal of Crop Science, 7 (2).
  • Rajasegar, A., Mansor, A., Poobathy, R., Sivalingam, E., Sinniah, U. R., & Subramaniam, S. (2015). An improved PVS2 cryopreservation technique for Ascocenda Wangsa Gold orchid using protocorm-like bodies. Turkish Journal of Biology, 39, 202-209.
  • Rajasegar, A., Poobathy, R., Rathinam, X., Oyunbileg, Y., & Subramaniam, S. (2015). Cryopreservation of PLBs of Brassidium Fly Away Using Encapsulation-Dehydration Technique. Mongolian Journal of Biological Sciences, 13 (1-2), 19-23.
  • Poobathy, R.; Zakaria, R.; Syed Hamzah, S. M. E. and Subramaniam, S. (2016). Early studies on protoplast isolation of Ludisia discolor, a wild orchid. Tropical Life Sciences Research, 27 (1), 15-19.
  • Khor, S. P., Poobathy, R., Zakaria, R., & Subramaniam, S. (2017). Development of a PVS2 droplet-vitrification cryopreservation technique for Aranda Broga Blue orchid protocorm-like bodies (PLBs). Cryoletters38 (4), 290-298.
  • Poobathy, R.; Zakaria, R.; Murugaiyah, V. and Subramaniam, S. (2018). Autofluorescence study and selected cyanidin quantification in the Jewel orchids Anoectochilus sp. and Ludisia discolorPLoS ONE13 (4), e0195642.

 

Conference Proceedings

  • Ranjetta, P., Chan, L. K., Sinniah, U. R., & Sreeramanan, S. (2010, May 8-11). Early study on the optimisation of protocorm-like body (PLB) sizes and various pretreatment concentrations in the encapsulation-dehydration of Dendrobium sonia-28 (Poster presentation). Paper presented at the 9th International Annual Symposium on Sustainability Science and Management, Kuala Terengganu, Malaysia.
  • Ranjetta, P., Chan, L. K., Xavier, R., & Sreeramanan, S. (2010a, December 3-5). The effects of various loading treatment duration in the vitrification of Dendrobium sonia-28. Paper presented at the The Sixth International Plant Tissue Culture and Biotechnology Conference, Dhaka, Bangladesh.
  • Ranjetta, P., Chan, L. K., Xavier, R., & Sreeramanan, S. (2010b, May 18-19). The effects of various pretreatment periods in the vitrification of Dendrobium sonia-28. Paper presented at the The 1st National Conference on Natural Resources: Conservation of Natural Resources and Sustainable Development, Kelantan, Malaysia.
  • Ranjetta, P., Safrina, R., Safiah, A. M., Jessica, J. J. A., Chan, L. K., Xavier, R., et al. (2010, December 20-21). The optimisation of encapsulation-dehydration and vitrification techniques for Dendrobium orchid. Paper presented at the The 1st Joint Symposium of ITB and USM (1JSIU): Science for Sustainable Development and a Better Life, Bandung, Indonesia.
  • Sreeramanan, S., Chan, L. K., Sinniah, U. R., & Ranjetta, P. (2010, May 11-13). The effects of protocorm-like body (PLB) sizes and various preculture treatments in the vitrification technique of Dendrobium sonia-28. Paper presented at the The 2nd National Conference on Agrobiodiversity Conservation and Sustainable Utilization, Tawau, Sabah, Malaysia.
  • Poobathy, R., Chan, L. K., Xavier, R., & Sreeramanan, S. (2012, 25-27 September). The production of synthetic seeds for the cryopreservation of protocorm-like bodies of Dendrobium sonia-28. Paper presented at the 1st Regional Conference on Agrobiodiversity Conservation and Sustainable Utilization (RAC-1), Langkawi, Kedah.
  • Ranjetta, P., & Sreeramanan, S. (2012, May 24-25). The benefits of preserving orchids of the Penang Botanic Gardens through cryopreservation. Paper presented at the The Role of the Penang Botanic Gardens: Meeting the Challenges of the 21st Century, Pulau Pinang, Malaysia.
  • Poobathy, R., Chan, L. K., Zakaria, R., & Sreeramanan, S. (2013). The effect of different surface sterilisation methods and media composition on the survival of nodal segments of Ludisia discolor orchid. Paper presented at the 2nd Seminar on Sustainable Agriculture and Natural Resources: Strategies for Food Security through Innovative Development, Universiti Sains Malaysia, Penang, Malaysia.
  • Poobathy, R., Zakaria, R., Syed Hamzah, S. M. E., & Sreeramanan, S. (2014a, 3-5 November). Early studies on protoplast isolation of Ludisia discolor, a wild orchid. Paper presented at the The 9th Regional IMT-GT Uninet Conference: Integrated Multidisciplinary and Transboundary Research for Global Transformation, Gurney Hotel, Penang, Malaysia.
  • Poobathy, R., Zakaria, R., Syed Hamzah, S. M. E., & Sreeramanan, S. (2014b, 8-10 June). A histological study of Anoectochilus sp. and Ludisia discolor, the Jewel orchids. Paper presented at the The 13th Symposium, Malaysian Society of Applied Biology; Applied Biology: The New Age, The Legend Resort, Cherating, Pahang, Malaysia.
  • Poobathy, R., Zakaria, R., Syed Hamzah, S. M. E., & Subramaniam, S. (2016). Histology and Transmission Electron Microscopy (TEM) of Anoectochilus sp. and Ludisia discolor, the Wild Jewel Orchids. Paper presented at the International Conference on Natural Products (ICNP 2016), Permai Hotel, Kuala Terengganu, Terengganu.

 

Magazine Articles

  • Sreeramanan, S., & Poobathy, R. (2012). Orchid Cryopreservation. In W. Rahman (Ed.), Bulletin: Wild Things (pp. 7-9). Pulau Pinang: The School of Biological Sciences, Universiti Sains Malaysia.
 
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