Pubblicazioni

Autori:

Lara, Reale; Andrea, Porceddu; Luisa, Lanfaloni; Chiaraluce, Moretti; Zenoni, Sara; Pezzotti, Mario; Bruno, Romano; Francesco, Ferranti

Titolo:

Patterns of cell division and expansion in developing petals of Petunia hybrida

Anno:

2002

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Referee:

Sì

Nome rivista:

SEXUAL PLANT REPRODUCTION

ISSN Rivista:

0934-0882

N° Volume:

15

Editore:

Springer Verlag Germany:Tiergartenstrasse 17, D 69121 Heidelberg Germany:011 49 6221 3450, EMAIL: g.braun@springer.de, INTERNET: http://www.springer.de, Fax: 011 49 6221 345229

Intervallo pagine:

123-132

Parole chiave:

Cell division; Petal development; Petunia hybrida

Breve descrizione dei contenuti:

The definition of the patterns of cell division and expansion in plant development is of fundamental importance in understanding the mechanics of morphogenesis. By studying cell division and expansion patterns, we have assembled a developmental map of Petunia hybrida petals. Cycling cells were labelled with in situ markers of the cell cycle, whereas cell expansion was followed by assessing cell size in representative regions of developing petals. The outlined cell division and expansion patterns were related to organ asymmetry. Initially, cell divisions are uniformly distributed throughout the petal and decline gradually, starting from the basal part, to form a striking gradient of acropetal polarity. Cell areas, in contrast, increased first in the basal portion and then gradually towards the petal tip. This growth strategy highlighted a cell size control model based on cell-cycle departure time. The dorso-ventral asymmetry can be explained in terms of differential regulation of cell expansion. Cells of the abaxial epidermis enlarged earlier to a higher final extent than those of the adaxial epidermis. Epidermal appendage differentiation contributed to the remaining asymmetry. On the whole our study provides a sound basis for mutant analyses and to investigate the impact of specific (environmental) factors on petal growth.

Id prodotto:

34712

Handle IRIS:

11562/233512

depositato il:

28 luglio 2007

ultima modifica:

13 novembre 2022

Citazione bibliografica:

Lara, Reale; Andrea, Porceddu; Luisa, Lanfaloni; Chiaraluce, Moretti; Zenoni, Sara; Pezzotti, Mario; Bruno, Romano; Francesco, Ferranti, Patterns of cell division and expansion in developing petals of Petunia hybrida «SEXUAL PLANT REPRODUCTION» , vol. 15 , 2002 , pp. 123-132

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