LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis

Gross-Hardt, R., Kagi, C., Baumann, N., Moore, J. M., Baskar, R., Gagliano, W. B., Jurgens, G., Grossniklaus, U. (March 2007) LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. PLoS Biology, 5 (3). pp. 494-500. ISSN 1544-9173

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URL: https://www.ncbi.nlm.nih.gov/pubmed/17326723
DOI: 10.1371/journal.pbio.0050047

Abstract

In flowering plants, the egg and sperm cells form within haploid gametophytes. The female gametophyte of Arabidopsis consists of two gametic cells, the egg cell and the central cell, which are flanked by five accessory cells. Both gametic and accessory cells are vital for fertilization; however, the mechanisms that underlie the formation of accessory versus gametic cell fate are unknown. In a screen for regulators of egg cell fate, we isolated the lachesis (lis) mutant which forms supernumerary egg cells. In lis mutants, accessory cells differentiate gametic cell fate, indicating that LIS is involved in a mechanism that prevents accessory cells from adopting gametic cell fate. The temporal and spatial pattern of LIS expression suggests that this mechanism is generated in gametic cells. LIS is homologous to the yeast splicing factor PRP4, indicating that components of the splice apparatus participate in cell fate decisions.

Item Type: Paper
Uncontrolled Keywords: NUCLEAR RIBONUCLEOPROTEIN PARTICLE SYNERGID CELL EGG CELL FERTILIZATION PRP4 GENOME MUTANT EMBRYOGENESIS THALIANA PROTEIN
Subjects: organism description > plant > Arabidopsis
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > gametophyte
CSHL Authors:
Communities: CSHL labs > Grossniklaus lab
Depositing User: CSHL Librarian
Date: March 2007
Date Deposited: 14 Nov 2011 20:02
Last Modified: 27 Mar 2018 16:20
PMCID: PMC1804285
Related URLs:
URI: http://repository.cshl.edu/id/eprint/23021

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