Endogenous levels of cytokinins, indoleacetic acid, abscisic acid, and pigments in variegated somaclones of micropropagated banana leaves

The banana (Musa spp. AAA) micropropagation shows a high incidence of off-types, among whose variegated plants are very common. Endogenous levels of growth regulators and pigment content were measured in normal and variegated leaves of the micropropagated banana plants growing in a greenhouse. Growt...

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Bibliographic Details
Published in:Journal of plant growth regulation 1998-05, Vol.17 (2), p.59-61
Main Authors: Zaffari, G.R. (Experimental Station of Itajai, Itajai, SC.), Peres, L.E.P, Kerbauy, G.B
Format: Article
Language:English
Subjects:
ABA
ADENINA
ADENINE
Agronomy. Soil science and plant productions
AIA
ANALISIS CUANTITATIVO
ANALYSE QUANTITATIVE
Biological and medical sciences
CAROTENOIDE
CAROTENOIDES
CAROTENOIDS
CHEMICAL COMPOSITION
CHLOROPHYLLE
CHLOROPHYLLS
CITOQUININAS
CLOROFILAS
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
CULTIVO DE TEJIDOS
CULTURE DE TISSU
CYTOKININE
CYTOKININS
Economic plant physiology
FEUILLE
Fruits
Fundamental and applied biological sciences. Psychology
Growth and development
Growth regulators
High pressure
HOJAS
IAA
Immunoassay
ISOPENTENYLADENINE
ISOPENTENYLADENOSINE
LEAVES
Liquid chromatography
MICROPROPAGACION
MICROPROPAGATION
MUSA
Pigments
PLANT GROWTH SUBSTANCES
QUANTITATIVE ANALYSIS
SOMACLONAL VARIATION
SUBSTANCE DE CROISSANCE VEGETALE
SUSTANCIAS DE CRECIMIENTO VEGETAL
TISSUE CULTURE
VARIACION SOMACLONAL
VARIATION SOMACLONALE
VARIEGACION
VARIEGATION
ZEATIN
ZEATIN RIBOSIDE
ZEATINA
ZEATINE
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Summary:The banana (Musa spp. AAA) micropropagation shows a high incidence of off-types, among whose variegated plants are very common. Endogenous levels of growth regulators and pigment content were measured in normal and variegated leaves of the micropropagated banana plants growing in a greenhouse. Growth regulators were separated by high pressure liquid chromatography and submitted to enzyme-linked immunosorbent assay for quantification. Pigment content was measured using the colorimetric method. Green leaves contained 1.9 and 10 times more cytokinins compared with green and yellow sectors of variegated leaves, respectively. The levels of indoleacetic acid in normal leaves were significantly higher than those found in green and yellow sectors of variegated leaves; however, the levels of abscisic acid were lower in normal leaves. The lower content of chlorophylls in variegated leaves coincided with decreased endogenous levels of cytokinins, which indicated that variegation in banana leaves may be associated with alterations in the metabolism of this growth regulator
ISSN:0721-7595
1435-8107
DOI:10.1007/PL00007017