Trehalose toxicity in cuscuta-reflexa - cell-wall synthesis is inhibited upon trehalose feeding

Veluthambi, K and Mahadevam, S and Maheshwari, R (1982) Trehalose toxicity in cuscuta-reflexa - cell-wall synthesis is inhibited upon trehalose feeding. In: Plant Physiology, 70 (3). pp. 686-688.

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Abstract

a,a-Trehalose induced a rapid blackening of the terminal 2.5-centimete region of excised Cuscuta relexa Roxb. vine. The incorporation of radioactivite from [I'C]glucose into alkali-insoluble fraction of shoot tip was markedly inhibited by 12 hours of trehalose feeding to an excised vine. This inhibition was confied to the apical segment of the vine in which cell elongation occurred. The rate of blackening of shoot tip explants was hastened by the addition of gibberellic acid A3, which promoted elongationgrowth of isolated Cuscuta shoot tips. The symptom of trehalose toxicity was duplicated by 2-deoxygucose, which has been shown to ba potent inhibitor of ceD wall synthesis in yeast. The observations suggest that trehalose interferes with the synthesis of ceDl wail polysaccharides, the chief component of which was presumed to be cellulose.

Item Type:	Journal Article
Publication:	Plant Physiology
Publisher:	American Society of Plant Biologists
Additional Information:	Copyright of this article belongs to American Society of Plant Biologists.
Department/Centre:	Division of Biological Sciences > Biochemistry
Date Deposited:	30 Dec 2009 09:46
Last Modified:	19 Sep 2010 05:41
URI:	http://eprints.iisc.ac.in/id/eprint/22424

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