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Transcriptomic profiling of hemp bast fibres at different developmental stages.

ABSTRACT: Bast fibres are long extraxylary cells which mechanically support the phloem and they are divided into xylan- and gelatinous-type, depending on the composition of their secondary cell walls. The former, typical of jute/kenaf bast fibres, are characterized by the presence of xylan and a high degree of lignification, while the latter, found in tension wood, as well as flax, ramie and hemp bast fibres, have a high abundance of crystalline cellulose. During their differentiation, bast fibres undergo specific developmental stages: the cells initially elongate rapidly by intrusive growth, subsequently they cease elongation and start to thicken. The goal of the present study is to provide a transcriptomic close-up of the key events accompanying bast fibre development in textile hemp (Cannabis sativa L.), a fibre crop of great importance. Bast fibres have been sampled from different stem regions. The developmental stages corresponding to active elongation and cell wall thickening have been studied using RNA-Seq. The results show that the fibres sampled at each stem region are characterized by a specific transcriptomic signature and that the major changes in cell wall-related processes take place at the internode containing the snap point. The data generated also identify several interesting candidates for future functional analysis.

SUBMITTER: Guerriero G

PROVIDER: S-EPMC5504027 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Transcriptomic profiling of hemp bast fibres at different developmental stages.

Guerriero Gea G Behr Marc M Legay Sylvain S Mangeot-Peter Lauralie L Zorzan Simone S Ghoniem Mohammad M Hausman Jean-Francois JF

Scientific reports 20170710 1

Bast fibres are long extraxylary cells which mechanically support the phloem and they are divided into xylan- and gelatinous-type, depending on the composition of their secondary cell walls. The former, typical of jute/kenaf bast fibres, are characterized by the presence of xylan and a high degree of lignification, while the latter, found in tension wood, as well as flax, ramie and hemp bast fibres, have a high abundance of crystalline cellulose. During their differentiation, bast fibres undergo ...[more]

PMID: 28694530

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Transcriptomic profiling of hemp bast fibres at different developmental stages.

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Transcriptomic profiling of hemp bast fibres at different developmental stages.

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