Age- and size-related trends in woody plant shoot development: regulatory pathways and evidence for genetic control.
Tree Physiol
; 22(8): 507-13, 2002 Jun.
Article
em En
| MEDLINE
| ID: mdl-12045024
Woody plants exhibit significant and predictable patterns of change in morphology and physiology as they become older and larger. Four models of potential pathways controlling these changes are presented: a stimulus-response model in which fully developed organs respond to changes in environment (defined here as everything external to the organ); an extrinsic model in which the attributes of developing organs are determined by environmental factors; an intrinsic model in which changes are a result of programmed changes in gene expression; and an extrinsic-intrinsic model in which changes in gene expression are induced by environmental factors. We review evidence that a genetic component is involved in controlling age- and size-related changes in foliar morphology and physiology and discuss the possibility of complex interactions among model pathways.
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Base de dados:
MEDLINE
Assunto principal:
Árvores
/
Brotos de Planta
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article