kawsar hossain - Academia.edu (original) (raw)
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Papers by kawsar hossain
bioRxiv (Cold Spring Harbor Laboratory), Feb 12, 2024
Scientific reports, Jan 4, 2017
Lignin, a cross-linked macromolecule of hydrophobic aromatic structure, provides additional rigid... more Lignin, a cross-linked macromolecule of hydrophobic aromatic structure, provides additional rigidity to a plant cell wall. Although it is an integral part of the plant cell, presence of lignin considerably reduces the quality of the fiber of fiber-yielding plants. Decreasing lignin in such plants holds significant commercial and environmental potential. This study aimed at reducing the lignin content in jute-a fiber crop, by introducing hpRNA-based vectors for downregulation of two monolignoid biosynthetic genes- cinnamate 4-hydroxylase (C4H) and caffeic acid O-methyltransferase (COMT). Transgenic generations, analyzed through Southern, RT-PCR and northern assays showed downregulation of the selected genes. Transgenic lines exhibited reduced level of gene expression with ~ 16-25% reduction in acid insoluble lignin for the whole stem and ~13-14% reduction in fiber lignin content compared to the control lines. Among the two transgenic plant types one exhibited an increase in cellulose...
Members of the genera Corchorus L. and Hibiscus L. are excellent sources of natural fibers and be... more Members of the genera Corchorus L. and Hibiscus L. are excellent sources of natural fibers and becoming much important in recent times due to an increasing concern to make the world greener. The aim of this study has been to describe the molecular phylogenetic relationships among the important members of these two genera as well as to know their relative dispersal throughout the world. Monophyly of Corchorus L. is evident from our study, whereas paraphyletic occurrences have been identified in case of Hibiscus L. Although C. olitorius is assumed to be originated from Africa and C. capsularis from Indian subcontinent, our study found both to be related through maternal inheritance. This prompted us to put forward a hypothesis with archeological support to explain the dispersal routes of migration of these two Corchorus species. Similar migratory occurrences may also be true for Hibiscus L
bioRxiv (Cold Spring Harbor Laboratory), Feb 12, 2024
Scientific reports, Jan 4, 2017
Lignin, a cross-linked macromolecule of hydrophobic aromatic structure, provides additional rigid... more Lignin, a cross-linked macromolecule of hydrophobic aromatic structure, provides additional rigidity to a plant cell wall. Although it is an integral part of the plant cell, presence of lignin considerably reduces the quality of the fiber of fiber-yielding plants. Decreasing lignin in such plants holds significant commercial and environmental potential. This study aimed at reducing the lignin content in jute-a fiber crop, by introducing hpRNA-based vectors for downregulation of two monolignoid biosynthetic genes- cinnamate 4-hydroxylase (C4H) and caffeic acid O-methyltransferase (COMT). Transgenic generations, analyzed through Southern, RT-PCR and northern assays showed downregulation of the selected genes. Transgenic lines exhibited reduced level of gene expression with ~ 16-25% reduction in acid insoluble lignin for the whole stem and ~13-14% reduction in fiber lignin content compared to the control lines. Among the two transgenic plant types one exhibited an increase in cellulose...
Members of the genera Corchorus L. and Hibiscus L. are excellent sources of natural fibers and be... more Members of the genera Corchorus L. and Hibiscus L. are excellent sources of natural fibers and becoming much important in recent times due to an increasing concern to make the world greener. The aim of this study has been to describe the molecular phylogenetic relationships among the important members of these two genera as well as to know their relative dispersal throughout the world. Monophyly of Corchorus L. is evident from our study, whereas paraphyletic occurrences have been identified in case of Hibiscus L. Although C. olitorius is assumed to be originated from Africa and C. capsularis from Indian subcontinent, our study found both to be related through maternal inheritance. This prompted us to put forward a hypothesis with archeological support to explain the dispersal routes of migration of these two Corchorus species. Similar migratory occurrences may also be true for Hibiscus L