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Titolo:
Suppression of (1 -> 3),(1 -> 4)-beta-D-glucan turnover during light-induced inhibition of rice coleoptile growth
Autore:
Chen, L; Kamisaka, S; Hoson, T;
Indirizzi:
Osaka City Univ, Fac Sci, Dept Biol, Sumiyoshi Ku, Osaka 5588585, Japan Osaka City Univ Osaka Japan 5588585 , Sumiyoshi Ku, Osaka 5588585, Japan
Titolo Testata:
JOURNAL OF PLANT RESEARCH
fascicolo: 1105, volume: 112, anno: 1999,
pagine: 7 - 13
SICI:
0918-9440(199903)112:1105<7:SO(-3->2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
CELL-WALL POLYSACCHARIDES; AUXIN-INDUCED CHANGES; MECHANICAL-PROPERTIES; MAIZE COLEOPTILES; WHITE-LIGHT; AVENA COLEOPTILES; DIFERULIC ACID; INNER TISSUES; ELONGATION; ANTIBODIES;
Keywords:
cell wall; coleoptile growth; (1 -> 3),(1 -> 4)-beta-D-glucans; (1 -> 3),(1 -> 4)-beta-D-glucan hydrolase; rice coleoptile; white light;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, L Osaka City Univ, Fac Sci, Dept Biol, Sumiyoshi Ku, Osaka 5588585, Japan Osaka City Univ Osaka Japan 5588585 shi Ku, Osaka 5588585, Japan
Citazione:
L. Chen et al., "Suppression of (1 -> 3),(1 -> 4)-beta-D-glucan turnover during light-induced inhibition of rice coleoptile growth", J PLANT RES, 112(1105), 1999, pp. 7-13

Abstract

Irradiation with white fluorescent light inhibits growth of rice coleoptiles. (1-->3),(1-->4)-beta-D-Glucan contents and (1-->3), (1-->4)-beta-D-glucan hydrolase activity increased in the faster phase of coleoptile growth, then declined under both light and dark conditions. The relative glucan content in the cell wall showed a good correlation with the increment of coleoptile length. Strong correlations were also observed among the increment of coleoptile length, the decrease in the level of the glucans, and the relative activity of the glucanase in the cell wall of light- and dark-grown coleoptiles except for those values in the early stage of coleoptile growth, supporting a hypothesis that the turnover of the glucans is one of the important factors which regulate rice coleoptile growth. The levels of the glucans and the glucanase activity were always lower in the cell wall of coleoptiIes grown in the light than those in darkness during the experimental period. These results suggest that light irradiation inhibits both the synthesisand the breakdown of the glucans, causing a decrease in the capacity of the cell wall to extend, thereby inducing growth suppression in rice coleoptiles.

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Documento generato il 28/09/20 alle ore 03:52:33