Polyamine content in relation to ploidy level and to different organs of Nicotiana plumbaginifolia

Levels of free and bound polyamines (PAs) have been analysed in different organs of diploid, haploid and hypohaploid phenotypes of Nicotiana plumbaginifolia. In leaves and stems there is a positive correlation between the content of the PAs bound to macromolecules and ploidy level. In contrast, in f...

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Bibliographic Details
Published in:Plant and cell physiology 1990, Vol.31 (6), p.823-828
Main Authors: Figueras, X. (Universitat de Barcelona (Spain)), Gendy, C.A, Pinol, M.T, Tran Thanh Van, K, Tiburcio, A.F
Format: Article
Language:English
Subjects:
Biological and medical sciences
FEUILLE
FLEUR
Floral morphology
FLORES
FLOWERS
Fundamental and applied biological sciences. Psychology
Haploid
HAPLOIDIA
HAPLOIDIE
HAPLOIDY
HOJAS
Hypohaploid
LEAVES
Metabolism
NICOTIANA
Nitrogen metabolism
Plant physiology and development
Ploidy degree
POLIAMINAS
POLYAMINE
POLYAMINES
Spermidine
STEMS
TALLO
TIGE
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Summary:Levels of free and bound polyamines (PAs) have been analysed in different organs of diploid, haploid and hypohaploid phenotypes of Nicotiana plumbaginifolia. In leaves and stems there is a positive correlation between the content of the PAs bound to macromolecules and ploidy level. In contrast, in flowers a negative correlation is found with bound spermidine (Spd) levels. Besides the ploidy degree, the high levels of Spd in the flowers of the haploid and hypohaploid phenotypes might be also due to the abnormal floral development and thus supports the view that this triamine could play a role in floral differentiation.
ISSN:0032-0781
1471-9053
1471-9053
DOI:10.1093/oxfordjournals.pcp.a077984