The specification of leaf identity during shoot development

Citation
Ra. Kerstetter et Rs. Poethig, The specification of leaf identity during shoot development, ANN R C DEV, 14, 1998, pp. 373-398
Citations number
122
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Cell & Developmental Biology
Journal title
ANNUAL REVIEW OF CELL AND DEVELOPMENTAL BIOLOGY
ISSN journal
1081-0706 → ACNP
Volume
14
Year of publication
1998
Pages
373 - 398
Database
ISI
SICI code
1081-0706(1998)14:<373:TSOLID>2.0.ZU;2-O
Abstract
A single plant produces several different types of leaves or leaf-like orga ns during its life span. This phenomenon, which is termed heteroblasty, is an invariant feature of shoot development but is also regulated by environm ental factors that affect the physiology of the plant. Invariant patterns o f heteroblastic development reflect global changes in the developmental sta tus of the shoot, such as the progression from embryogenesis through juveni le and adult phases of vegetative development, culminating in the productio n of reproductive structures. Genes that regulate these phase-specific aspe cts of leaf identity have been identified by mutational analysis in both ma ize and Arabidopsis. These mutations have revealed that leaf production is regulated independently of leaf identity, implying that the identity of a l eaf at a particular position on the shoot may depend on when the leaf was i nitiated in relation to a temporal program of shoot development.