Texas Tech University

Isaiah Pabuayon

Graduate Research Assistant
Photo Description


I am a graduate student pursuing a doctoral degree in crop science. I finished my bachelor's degree in biology from the University of the Philippines – Los Baños in 2011. After graduating, I worked at the International Rice Research Institute (IRRI) as a researcher from 2011 to 2015. My efforts were towards understanding how quantitative trait loci (QTL) discovered in rice confer increased yield under drought. Additionally, I also helped in characterizing the enzymatic functions of a germin-like protein (GLP) essential for rice grain filling. As for my project here in Texas Tech, I am working on discovering novel mechanisms for salinity tolerance using a breeding population developed in IRRI. Together with other members in our group, I hope to decipher mechanisms outside the QTL paradigm by looking at epigenetic mechanisms associated with stress tolerance.

Key Skills

Gene expression analysis, protein analysis, selected metabolite analysis and quantification


  1. Raorane ML, Mutte SK, Varadarajan AR, Pabuayon IM, Kohli A (2013) Protein SUMOylation and plant abiotic stress signaling: in silico case study of rice RLKs, heat-shock and Ca2+-binding proteins. Plant Cell Rep. 32: 1053-1065.
  2. Raorane ML, Pabuayon IM, Varadarajan AR, Mutte SK, Kumar A, Treumann A, Kohli A (2015) Proteomic insights into the role of the large-effect QTL qDTY12.1for rice yield under drought. Mol Breeding. 35: 139.
  3. Raorane ML, Pabuayon IM, Miro B, Kalladan R, Reza-Hajirezai M, Oane RH, Kumar A, Sreenivasulu N, Henry A, Kohli A (2015) Variation in primary metabolites in parental and near-isogenic lines of the QTL qDTY12.1: altered roots and flag leaves but similar spikelets of rice under drought. Mol Breeding. 35: 138.
  4. Dixit S, Biswal AK, Min A, Henry A, Oane RH, Raorane ML, Longkumer T, Pabuayon IM, Mutte SK, Vardarajan AR, Miro B, Govindan G, Albano-Enriquez B, Pueffeld M, Sreenivasulu N, Slamet-Loedin I, Sundarvelpandian K, Tsai YC, Raghuvanshi S, Hsing YC, Kumar A, Kohli A (2015) Action of multiple intra-QTL genes concerted around a co-localized transcription factor underpins a large effect QTL. Sci Rep. 5: 15183.
  5. Pabuayon IM, Yamamoto N, Trinidad JL, Longkumer T, Raorane ML, Kohli A (2016) Reference genes for accurate gene expression analysis across different tissues, developmental stages and genotypes in rice for drought tolerance. Rice. 9: 32.