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Titolo:
HORMONE MUTANTS IN HIGHER-PLANTS - CHARAC TERIZATION OF CYTOKININ-RESISTANT MUTANTS OF NICOTIANA-PLUMBAGINIFOLIA
Autore:
JULLIEN M; LESUEUR D; JEAN R; LOGIE F; LALOUE M;
Indirizzi:
INRA,BIOL CELLULAIRE LAB,ROUTE ST CYR F-78026 VERSAILLES FRANCE
Titolo Testata:
Acta botanica gallica
fascicolo: 6, volume: 140, anno: 1993,
pagine: 649 - 657
SICI:
1253-8078(1993)140:6<649:HMIH-C>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
FRE
Keywords:
CYTOKININS; MUTANTS; RESISTANCE; MALATE; NICOTIANA-PLUMBAGINIFOLIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
NO
Recensione:
Indirizzi per estratti:
Citazione:
M. Jullien et al., "HORMONE MUTANTS IN HIGHER-PLANTS - CHARAC TERIZATION OF CYTOKININ-RESISTANT MUTANTS OF NICOTIANA-PLUMBAGINIFOLIA", Acta botanica gallica, 140(6), 1993, pp. 649-657

Abstract

Progress in understanding the modes of phytohormone action have now been obtained using a genetic approach. This was illustrated here by the study of the cytokinin-resistant mutants zea isolated in Nicotiana plumbaginifolia (Jullien et al., 1990). The resistance to cytokinins conferred by the zea mutations is expressed in different ways. At the plantlet and seedling level, ca 1 muM cytokinin stimulated the growth ofthe mutants. At higher concentrations, the seedlings of the mutants show a pronounced hypertrophy of the hypocotyl and cotyledons when the wild type were inhibited. Mutants grew faster than the wild type on basal medium containing sucrose. Tissues of the mutant plantlets grown in these conditions contained less sucrose and more glucose, fructose, starch and malate than the wild type plantlets. The malate level in some of the mutants zea appeared very sensitive to cytokinins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 16:42:34