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Cloning and expression analysis of a Petunia hybrida flower specific mitotic-like cyclin

Porceddu, Andrea and Reale, Lara and Lanfaloni, Luisa and Moretti, Chiaraluce and Sorbolini, Silvia and Tedeschini, Emma and Ferranti, Francesco and Pezzotti, Mario (1999) Cloning and expression analysis of a Petunia hybrida flower specific mitotic-like cyclin. FEBS Letters, Vol. 462 (1-2), p. 211-215. ISSN 0014-5793. Article.

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DOI: 10.1016/S0014-5793(99)01484-2


A cyclin cDNA clone (Pethy;CycB1;1) was isolated from a Petunia hybrida ovary specific cDNA library. Sequence comparison revealed that Pethy;CYCB1;1 protein is highly homologous to mitotic B1 cyclins. Northern analysis and in situ hybridisation experiments showed that its expression is developmentally regulated and restricted to flower organs. We have attempted to define some of the cell division patterns which contribute to shaping each floral organ by analysing Pethy;CycB1;1 expression on Petunia flower sections. While in sepals, epidermis and parenchyma cell division patterns were comparable, there were two distinct cell division patterns in petals. In the epidermis, Pethy;CYCB1;1 expression was found both at the petal tip and along epidermis, whereas in the parenchyma only at the petal tips. In reproductive organs cell divisions were detected only in sporophytic tissues. No signals were detected inside meiotic cells.

Item Type:Article
ID Code:4065
Uncontrolled Keywords:Cell-cycle, mitotic cyclin, flower development, Petunia hybrida
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/07 Genetica agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
001 Università di Sassari > 01 Dipartimenti > Scienze agronomiche e genetica vegetale agraria
Publisher:Elsevier Science
Copyright Holders:© 1999 Federation of European Biochemical Societies
Deposited On:28 Jun 2010 19:11

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