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1998 | 20 | 1 |

Tytuł artykułu

Modification of cell wall polysaccharides during cell elongation in Phaseolus vulgaris hypocotyls

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The effect of gibberellic acid (GA) and naphthylacetic acid (NAA) on hypocotyl elongation and cell wall polysaccharides was studied using Phaseolus vulgaris seedlings grown in light condition. The hypocotyl was demarcated into two segments — one near the root was called lower and the one near the cotyledon was called upper. The upper segment showed a typical sigmoidal growth curve while lower segment did not show any growth at all. GA promoted the growth of upper segment while NAA showed clear inhibition in both the segments. Xyloglucan content showed a clear inverse correlation with growth. Pectic polysaccharides did not show a clear trend, though showed an initial inverse correlation with growth. It is concluded that degradation of low and high molecular weight xyloglucans are involved in cell wall loosening which in turn may be responsible for the elongation growth of Phaseolus hypocotyls in light.

Wydawca

-

Rocznik

Tom

20

Numer

1

Opis fizyczny

p.15-18,fig.

Twórcy

  • Saurashtra University, Rajkot 360 005, Gujarat, India
autor

Bibliografia

  • Aspinall G.O. 1980. Chemistry of cell wall polysaccharides. In Biochemistry of Plants. A Comprehensive Treatise STUMPF, C.P.K. and CONN, E.E. eds. Vol 3 Academic press, New York pp. 473–500.
  • Carpita N.C., Kanabus J. 1988. Chemical structure of cell walls of dwarf maize and changes by gibberellin. Plant Physiol. 88:671–678.
  • Chanda S.V., Bapodara C., Singh Y.D. 1995. Degradation of xyloglucan and pectic polysaccharides during cell elongation in Phaseolus vulgaris hypocotyls. Acta Physiol. Plant. 17: 349–356.
  • Cosgrove D.J., Sovonick-Dunford S.A. 1989. Mechanism of gibberellin-dependent stem elongation in peas. Plant Physiol. 89:184–191.
  • Doddema H., Telcamp G.P. 1979. Uptake of nitrate by mutants of Arabidopsis thaliana, distributed in uptake or reduction of nitrate. II Kinetics. Physiol. Plant. 45:332–338.
  • Dubois M., Giles K.A., Hamilton J.K., Rebers P.A., Smith F.P. 1956. Colorimetric method for determination of sugars and related substances. Anal. Chem. 28:350–356.
  • Fry S.C. 1989. The structure and functions of xyloglucan. J. Exp. Bot. 40:1–11.
  • Fry S.C., Smith R.C., Renwick K.M., Martin D.J., Hodge S.K., Mathews K.J. 1992. Xyloglucan endotransglycosylase, a new wall-loosening enzyme activity from plants. Biochem. J. 282:821–828.
  • Hayashi T., Maclachan G. 1986. Pea cellulose and xyloglucan biosynthesis and biodegradation. IN RA Young and RM Rowell eds. Cellulose: Structure and Hydrolysis. Wiley New York pp. 67–76.
  • Hayashi T. 1989. Xyloglucan in primary cell wall. Annu. Rev. Plant Physiol. and Plant Mol. Biol. 40:139–68.
  • Hoson T., Masuda Y. 1989. Antibodies and lectins specific for xyloglucans inhibit auxin-induced elongation of azuki bean epicotyls. In S.C. FRY, C.T. BRENT and J.S.G. REID eds. Fifth Cell Wall Meeting, Edinburg (Abstract No. 132).
  • Keyes G., Sorrells M.E., Setter T.L. 1990. Gibberellic acid regulates cell wall extensibility in wheat (Triticum aestivum L.). Plant Physiol. 92:242–245.
  • Kim J-B., Carpita N.C. 1992. Changes in esterification of uronic acid groups of cell wall polysaccharides during elongation of maize coleoptiles. Plant Physiol. 98:646–53.
  • Kooiman P. 1960. A method for the determination of amyloid in plant seeds. Recl. Trav. Chim. Pays. Bas. 79:675–678.
  • Labavitch J.M. 1981. Cell wall turnover in plant development. Annu. Rev. Plant Physiol. 32:385–406.
  • Potter I., Fry S.C. 1993. Xyloglucan endotransglycosylase activity in pea internodes. Plant Physiol. 103:235–241.
  • Taiz L. 1984. Plant cell expansion regulation of cell wall mechanical properties. Annu. Rev. Plant Physiol. 35:585–657.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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