LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis.
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...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2007-03-01
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| Series: | PLoS Biology |
| Online Access: | http://europepmc.org/articles/PMC1804285?pdf=render |
| _version_ | 1819150278647087104 |
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| author | Rita Gross-Hardt Christina Kägi Nadine Baumann James M Moore Ramamurthy Baskar Wendy B Gagliano Gerd Jürgens Ueli Grossniklaus |
| author_facet | Rita Gross-Hardt Christina Kägi Nadine Baumann James M Moore Ramamurthy Baskar Wendy B Gagliano Gerd Jürgens Ueli Grossniklaus |
| author_sort | Rita Gross-Hardt |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-22T14:14:58Z |
| format | Article |
| id | doaj.art-2e0720563c7f46d6bb8510ae55ea4d28 |
| institution | Directory Open Access Journal |
| issn | 1544-9173 1545-7885 |
| language | English |
| last_indexed | 2024-12-22T14:14:58Z |
| publishDate | 2007-03-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Biology |
| spelling | doaj.art-2e0720563c7f46d6bb8510ae55ea4d282022-12-21T18:23:07ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852007-03-0153e4710.1371/journal.pbio.0050047LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis.Rita Gross-HardtChristina KägiNadine BaumannJames M MooreRamamurthy BaskarWendy B GaglianoGerd JürgensUeli GrossniklausIn 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.http://europepmc.org/articles/PMC1804285?pdf=render |
| spellingShingle | Rita Gross-Hardt Christina Kägi Nadine Baumann James M Moore Ramamurthy Baskar Wendy B Gagliano Gerd Jürgens Ueli Grossniklaus LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. PLoS Biology |
| title | LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. |
| title_full | LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. |
| title_fullStr | LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. |
| title_full_unstemmed | LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. |
| title_short | LACHESIS restricts gametic cell fate in the female gametophyte of Arabidopsis. |
| title_sort | lachesis restricts gametic cell fate in the female gametophyte of arabidopsis |
| url | http://europepmc.org/articles/PMC1804285?pdf=render |
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