Plant Physiol. Tips for Better Browsing
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on July 15, 2005; 10.1104/pp.105.062059

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrow All Versions of this Article:
138/4/2185    most recent
pp.105.062059v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (18)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Albertini, E.
Right arrow Articles by Falcinelli, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Albertini, E.
Right arrow Articles by Falcinelli, M.
Agricola
Right arrow Articles by Albertini, E.
Right arrow Articles by Falcinelli, M.

Received February 28, 2005
Returned for revision April 22, 2005
Accepted May 8, 2005

SERK and APOSTART. Candidate Genes for Apomixis in Poa pratensis

Emidio Albertini *, Gianpiero Marconi , Lara Reale , Gianni Barcaccia , Andrea Porceddu , Francesco Ferranti , and Mario Falcinelli

Department of Plant Biology and Agro-Environmental and Animal Biotechnology, University of Perugia, 06121 Perugia, Italy
Department of Environmental Agronomy and Crop Science, University of Padova, Agripolis, 35020 Legnaro, Padova, Italy
Institute of Plant Genetics, Research Division of Perugia, 06100 Perugia, Italy

* Corresponding author; email: emidalb{at}unipg.it.

Seed production generally requires the mating of opposite sex gametes. Apomixis, an asexual mode of reproduction, avoids both meiotic reduction and egg fertilization. The essential feature of apomixis is that an embryo is formed autonomously by parthenogenesis from an unreduced egg of an embryo sac generated through apomeiosis. If apomixis were well understood and harnessed, it could be exploited to indefinitely propagate superior hybrids or specific genotypes bearing complex gene sets. A more profound knowledge of the mechanisms that regulate reproductive events would contribute fundamentally to understanding the genetic control of the apomictic pathway. In Poa pratensis, we isolated and characterized two genes, PpSERK (SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE) and APOSTART. These full-length genes were recovered by rapid amplification of cDNA ends and their temporal and spatial expression patterns were assessed by reverse transcription-polymerase chain reaction and in situ hybridization, respectively. The expression of PpSERK and APOSTART differed in apomictic and sexual genotypes. Their putative role in cell-signaling transduction cascades and trafficking events required during sporogenesis, gametogenesis, and embryogenesis in plants is reported and discussed. We propose that, in nucellar cells of apomictic genotypes, PpSERK is the switch that channels embryo sac development and that it may also redirect signaling gene products to compartments other than their typical ones. The involvement of APOSTART in meiosis and programmed cell death is also discussed.




This article has been cited by other articles:


Home page
 J Exp BotHome page
K. E. Nolan, S. Kurdyukov, and R. J. Rose
Expression of the SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 (SERK1) gene is associated with developmental change in the life cycle of the model legume Medicago truncatula
J. Exp. Bot., April 1, 2009; 60(6): 1759 - 1771.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
A. Chiappetta, M. Fambrini, M. Petrarulo, F. Rapparini, V. Michelotti, L. Bruno, M. Greco, R. Baraldi, M. Salvini, C. Pugliesi, et al.
Ectopic expression of LEAFY COTYLEDON1-LIKE gene and localized auxin accumulation mark embryogenic competence in epiphyllous plants of Helianthus annuus x H. tuberosus
Ann. Bot., March 1, 2009; 103(5): 735 - 747.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. R. Malik, F. Wang, J. M. Dirpaul, N. Zhou, P. L. Polowick, A. M.R. Ferrie, and J. E. Krochko
Transcript Profiling and Identification of Molecular Markers for Early Microspore Embryogenesis in Brassica napus
Plant Physiology, May 1, 2007; 144(1): 134 - 154.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2005 by the American Society of Plant Biologists