Carbohydrate partitioning and metabolism during acclimatization of micropropagated Calathea

Regulation of carbohydrate metabolism and compartmentation were studied during the acclimatization of tissue cultured Calathea plantlets. At transplantation plants were characterised by a heterotrophic metabolism with roots and stems as the main storage organs for carbohydrates. As acclimatization p...

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Bibliographic Details
Published in:Plant growth regulation 1998-10, Vol.26 (1), p.25-31
Main Authors: Piqueras, A. (Centro de Edafologia y Biologia Aplicada de Segura, Murcia (Spain). Dept. de Nutricion y Fisiologia Vegetal), Huylenbroeck, J.M. van, Han, B.H, Debergh, P.C
Format: Article
Language:English
Subjects:
ADAPTACION
ADAPTATION
Agronomy. Soil science and plant productions
Biological and medical sciences
CALATHEA
CARBOHYDRATE METABOLISM
Economic plant physiology
Fundamental and applied biological sciences. Psychology
In vitro culture
METABOLISME DES GLUCIDES
METABOLISMO DE CARBOHIDRATOS
MICROPROPAGACION
MICROPROPAGATION
Plant physiology and development
SACCHAROSE
SUCROSA
SUCROSE
Tissue cultures, protoplasts
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Summary:Regulation of carbohydrate metabolism and compartmentation were studied during the acclimatization of tissue cultured Calathea plantlets. At transplantation plants were characterised by a heterotrophic metabolism with roots and stems as the main storage organs for carbohydrates. As acclimatization proceeded, a switch to autotrophic growth was observed: leaves became source organs, which was among others reflected by significant increases of invertase, sucrose synthase and sucrose-P synthase activities. Mobilization of reserves in roots and stems was also observed during the same period. Sucrose and starch accumulation in leaves was positively correlated with increasing light intensity.[PUBLICATION ABSTRACT]
ISSN:0167-6903
1573-5087
DOI:10.1023/A:1006043718094