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Distribution, structure and biosynthetic gene families of (1,3;1,4)-b-glucan in Sorghum bicolor

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Abstract In cereals, the presence of soluble polysaccharides including (1,3;1,4)-b-glucan has downstream implications for human health, animal feed and biofuel applications. Sorghum bicolor (L.) Moench is a versatile crop, but there are limited reports regarding the content of such soluble polysaccharides. Here, the amount of (1,3;1,4)-b-glucan present in sorghum tissues was measured using a Megazyme assay. Very low amounts were present in the grain, ranging from 0.16%–0.27% (w/w), while there was a greater quantity in vegetative tissues at 0.12–1.71% (w/w). The fine structure of (1,3;1,4)-b-glucan, as denoted by the ratio of cellotriosyl and cellotetraosyl residues, was assessed by high performance liquid chromatography(HPLC) and ranged from 2.6–3:1 in the grain, while ratios in vegetative tissues were lower at 2.1–2.6:1. The distribution of (1,3;1,4)-b-glucan was examined using a specific antibody and observed with fluorescence and transmission electron microscopy. Micrographs showed a variable distribution of (1,3;1,4)- b-glucan influenced by temporal and spatial factors. The sorghum orthologs of genes implicated in the synthesis of
(1,3;1,4)-b-glucan in other cereals, such as the Cellulose synthase-like (Csl) F and H gene families were defined. Transcript profiling of these genes across sorghum tissues was carried out using real-time quantitative polymerase chain reaction, indicating that, as in other cereals, CslF6 transcripts dominated.

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Ketersediaan

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Informasi Detail

Judul Seri

Integrative Plant Biology

No. Panggil

-

Penerbit

: ., 2015

Deskripsi Fisik

J Integr Plant Biol 57: 429–445, 2015

Bahasa

English

ISBN/ISSN

doi: 10.1111/jipb.12

Klasifikasi

-

Tipe Isi

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Tipe Media

-

Tipe Pembawa

-

Edisi

(2015),57

Subjek

BIOLOGI
INTERAKSI ANTAR MOLEKUL

Info Detail Spesifik

-

Pernyataan Tanggungjawab

deliza

Versi lain/terkait

Lampiran Berkas

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