Jute, including white and dark jute, is an agroeconomically important fiber crop worldwide. However, no practical information is available for expressed sequence tag-derived InDel (insertion and deletion) in jute to date. Previously, we de novo assembled 48,914 unigenes from white jute. In this study, 4815 InDels were called from these unigenes. The size <5 bp was the most abundant types (69.88%), and the AG-rich nucleotide InDels were the predominant. Subsequently, a sample of 173 InDels (TFCcID), located in genes encoding transcription factors, were selected to survey polymorphisms among 24 diverse accessions derived from a panel of 159 jute germplasm. Of these, 119(68.8%) successfully amplified and detected polymorphism, indicating that these InDels are of good quality. The 119 polymorphic InDels were successfully mapped to the existing contigs of jute variety CVL-1. Single marker analysis of these polymorphic TFCcIDs was conducted to associate specific markers to cellulose content of bast fiber. Five markers from TFCcIDs were identified to be significantly correlated to cellulose content of bast fiber. To our knowledge, it is the first successful development of InDel markers on a large scale in jute, which will accelerate related researches on genetic map construction and marker assisted selection of bast fiber quality.
Tropical Plant Biology – Springer Journals
Published: Nov 9, 2017
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