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Central cell-derived peptides regulate early embryo patterning in flowering plants
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Costa, L. M., Marshall, E., Tesfaye, M. , Silverstein, K. A. T. , Mori, M. , Umetsu, Y. , Otterbach, S, Papareddy, Ranjith, Dickinson, H. G. , Boutiller, K. , VandenBosch, K. A., Ohki, S. and Gutierrez-Marcos, José F. (2014) Central cell-derived peptides regulate early embryo patterning in flowering plants. Science, 344 (6180). pp. 168-172. doi:10.1126/science.1243005 ISSN 0036-8075.
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Official URL: http://dx.doi.org/10.1126/science.1243005
Abstract
Plant embryogenesis initiates with the establishment of an apical-basal axis; however, the molecular mechanisms accompanying this early event remain unclear. Here, we show that a small cysteine-rich peptide family is required for formation of the zygotic basal cell lineage and proembryo patterning in Arabidopsis. EMBRYO SURROUNDING FACTOR 1 (ESF1) peptides accumulate before fertilization in central cell gametes and thereafter in embryo-surrounding endosperm cells. Biochemical and structural analyses revealed cleavage of ESF1 propeptides to form biologically active mature peptides. Further, these peptides act in a non–cell-autonomous manner and synergistically with the receptor-like kinase SHORT SUSPENSOR to promote suspensor elongation through the YODA mitogen-activated protein kinase pathway. Our findings demonstrate that the second female gamete and its sexually derived endosperm regulate early embryonic patterning in flowering plants.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
| Journal or Publication Title: | Science | ||||||||
| Publisher: | American Association for the Advancement of Science | ||||||||
| ISSN: | 0036-8075 | ||||||||
| Official Date: | 11 April 2014 | ||||||||
| Dates: |
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| Volume: | 344 | ||||||||
| Number: | 6180 | ||||||||
| Page Range: | pp. 168-172 | ||||||||
| DOI: | 10.1126/science.1243005 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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