Pathways associated with lignin biosynthesis in lignomaniac jute fibres

Molecular Genetics and Genomics : MGG
Avrajit ChakrabortyNagendra Kumar Singh

Abstract

We generated the bast transcriptomes of a deficient lignified phloem fibre mutant and its wild-type jute (Corchorus capsularis) using Illumina paired-end sequencing. A total of 34,163 wild-type and 29,463 mutant unigenes, with average lengths of 1442 and 1136 bp, respectively, were assembled de novo, ~77-79 % of which were functionally annotated. These annotated unigenes were assigned to COG (~37-40 %) and GO (~22-28 %) classifications and mapped to 189 KEGG pathways (~19-21 %). We discovered 38 and 43 isoforms of 16 and 10 genes of the upstream shikimate-aromatic amino acid and downstream monolignol biosynthetic pathways, respectively, rendered their sequence similarities, confirmed the identities of 22 of these candidate gene families by phylogenetic analyses and reconstructed the pathway leading to lignin biosynthesis in jute fibres. We also identified major genes and bast-related transcription factors involved in secondary cell wall (SCW) formation. The quantitative RT-PCRs revealed that phenylalanine ammonia-lyase 1 (CcPAL1) was co-down-regulated with several genes of the upstream shikimate pathway in mutant bast tissues at an early growth stage, although its expression relapsed to the normal level at the later growth stag...Continue Reading

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Citations

Sep 21, 2016·International Journal of Molecular Sciences·Lauralie Mangeot-PeterGea Guerriero
Jul 12, 2017·Scientific Reports·Gea GuerrieroJean-Francois Hausman
Jun 26, 2021·Plant Biotechnology Journal·Lilan ZhangLiwu Zhang

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