What is it about?
The sequence of the waxy (Wx) gene determines whether rice will be sticky (glutinous) or well-separated (non-glutinous) after cooking. The north-east of Bangladesh includes an area where the origins of rice has been traced so rice from this area was checked for sequence of the waxy gene. Sequence polymorphism in Wx locus of 22 Bangladeshi rice landraces was analyzed. Most of the Bangladeshi landraces showed SNP patterns reported in South and Southeast Asian varieties. Three glutinous or Beruin cultivars as they are locally called lacked the known glutinous alleles but still had low amylose and were sticky. Novel Wx promoter/intronic mutations in these 3 Beruin cultivars may explain their glutinous phenotype.
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Perspectives
We are very grateful to Dr. Abdul Choudhury and the farmers of north east Bangladesh for providing us with pure seeds of the cultivars analyzed in this study. As a matter of fact Dr. Choudhury himself suggested the idea for undertaking the study, which formed the subject matter of my Ph.D. student, Dr. Rokeya Begum.
Dr. Zeba I Seraj
Dhaka University
Read the Original
This page is a summary of: Variability in amylose content of Bangladeshi rice cultivars due to unique SNPs in Waxy allele, Journal of Cereal Science, September 2016, Elsevier,
DOI: 10.1016/j.jcs.2016.07.006.
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