IDENTIFICATION OF SEED PROTEOME OF MALAYSIAN UPLAND RICE (#221)
Rice (Oryza
sativa L.) is immensely consumed by global population and becoming the
staple food in many countries. Providing a lot of nutrient content, rice comes
in various variety, shapes, color and taste. Typical rice breeding is in
flooded condition with good irrigation system referred to as wetland variety
hence, requiring substantial amount of land. Our focus is on varieties that can
sustain drought condition and require minimal amount of water for its growth
known as upland rice. Upland rice in Malaysia is mostly grown either on hilly
side or low land area without subjecting the plants to flooded condition where
the source of water comes from rainfall. We set out to analyze a few of
Malaysian upland rice varieties to identify the proteins to establish seed
proteome database for rice from Malaysia. Protein were extracted from the seeds
using suitable method adapted from Singh et al (2004) followed by separation on
1D SDS-PAGE, tryptic digestion and peptide sequencing by LC-MS/MS. Identified
proteins were then searched against Oryza
sativa databases. We confirmed the presence of water stress inducible
protein which confers the upland variety tolerance to drought aside from many
other proteins such as storage proteins, embryo-specific proteins, stress-related
proteins, signaling proteins and several antioxidants. Responses to stress,
biotic and abiotic stress, and protein metabolism are the largest
representation of GO analysis. Our findings presents a preliminary insight into
the seed proteome of Malaysian upland rice which could provide an alternative
to typical rice breeding due to land scarcity.