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Valentine Otang Ntui

Post Doctoral Fellow
Research Group: Salim Al-Babili 

Research Interests

In plants, hormonal signaling is essential for coordinating the growth and activity of different organs and tissues. A new set of phytohormones, strigolactones (SLs), have been identified to act as long distance branching factors that suppress the growth of preformed axillary shoot buds, act as germination stimulants of parasitic plants and as triggers for the establish- ment of interactions with mycorrhizal fungi. I am interested in identifying the strigolactone (SL) biosynthesis and signaling pathway in plants.

Selected Publications

  • Darwish NA, Khan RS,  Ntui VO, Nakamura I, Mii M. (2013) Generation of selectable Marker-free transgenic eggplant resistant to Alternaria solani using the R/RS site-specific recombination system. Plant Cell Rep DOI: 10.1007/s00299-013-1541-z.

  • Ntui VO, Kynet K, khan RS. Watanabe M, Ohara M, Fukami M, Nakamura I, Mii M. (2013) Transgenic tobacco lines expressing a defective CMV replicase derived dsRNA are resistant to CMV-O and Y. Molecular Biotechnology DOI: 10.1007/s12033-013-9681-5.

  • Ntui VO, Kynet K, Azadi P, khan RS. Chin DP, Nakamura I, Mii M. (2013) Transgenic accumulation of cucumber mosaic virus (CMV) replicase derived double stranded RNA modulates plant defence against CMV strains O and Y in potato.  Transgenic Research 22: 1191-1205.

  • Sharafi A, Sohi HH, Mousavi A, Azadi P,   Razavi K, Ntui VO (2013). A reliable and efficient protocol for inducing hairy roots in Papaver bracteatum. Plant Cell Tiss Org Cult 113: 1-9.

  • Ntui VO, Thirukkumarn G, Azadi P, Khan RS, Chin DP, Nakamura I, Mii M (2010) Stable integration and expression of wasabi defensin gene in “Egusi” melon (Colocynthis citrullus L.) confers resistance to Fusarium wilt and Alternaria leaf spot. Plant Cell Rep 29: 943-954

Education Profile

  • 2010     Ph. D (Plant Biotechnology), Chiba University, Japan
  • 2003    M. Sc (Plant Genetics and Breeding), University of Calabar, Calabar, Nigeria
  • 1997    B. Sc (Biology), University of Calabar, Calabar, Nigeria

Professional Profile

  • Sept. 2011-Sept. 2013      JSPS Postdoctoral fellow, Chiba University, Japan,
  • Oct. 2010-March 2011     Researcher, Chiba University, Japan.
  • April 201 - Sept. 2011      Assistant Professor, University of Calabar, Nigeria.
  • Aug. 2001 - April 2007     Lecturer, University of Calabar, Nigeria.

Scientific and Professional Memberships

  • Society for In vitro Biology
  • International Association for Plant Biology


  • Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowship.
  • Monbukagakusho (Government of Japan, MEXT) Ph. D scholarship.