Research Project
Grant-in-Aid for Scientific Research (C)
In the Brassicaceae, intraspecific non-self pollen (compatible pollen) can germinate and grow into stigmatic papilla cells, while self pollen or interspecific pollen is rejected at this stage. However, the mechanisms underlying this selective acceptance of compatible pollen remain unclear. Here, using a cell-impermeant calcium indicator, we showed that the compatible pollen coat contains signaling molecule(s) that stimulate Ca2+ export from the papilla cells. Transcriptome analyses of stigmas suggested that autoinhibited Ca2+-ATPase 13 (ACA13) was induced after both compatible pollination and compatible pollen coat treatment. ACA13 protein localized to the plasma membrane. The stigma of a T-DNA insertion line of ACA13 exhibited reduced Ca2+ export, as well as defects in compatible pollen germination and seed production. These findings suggest that stigmatic ACA13 functions in the export of Ca2+ to the compatible pollen tube, which promotes successful fertilization.
All 2014 2013 2012 2011 Other
All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (22 results) (of which Invited: 5 results) Book (6 results) Remarks (1 results)
Plant Cell
Volume: 26 (2) Issue: 2 Pages: 636-649
10.1105/tpc.113.121350
Volume: 26 (3) Issue: 3 Pages: 1069-1080
10.1105/tpc.113.120642
J Exp Bot.
Volume: 65 (4) Issue: 4 Pages: 939-951
10.1093/jxb/ert438
Plant Cell Physiol.
Volume: 54 (11) Issue: 11 Pages: 1894-1906
10.1093/pcp/pct133
New Phytol.
Volume: 199 (3) Issue: 3 Pages: 832-842
10.1111/nph.12296
Genes & Genetic Systems
Volume: 87 Issue: 5 Pages: 291-297
10.1266/ggs.87.291
10031155693
Development
Volume: 139 (22) Issue: 22 Pages: 4202-4209
10.1242/dev.081208
Mol Microbiol.
Volume: 85 (1) Issue: 1 Pages: 51-66
10.1111/j.1365-2958.2012.08094.x
Curr Opin Plant Biol.
Volume: 15 (1) Issue: 1 Pages: 78-83
10.1016/j.pbi.2011.09.003
Genes Genet Syst.
Volume: 87 Pages: 291-297
Developmental Cell
Volume: 21 Issue: 3 Pages: 589-596
10.1016/j.devcel.2011.08.013
J. Biol. Chem.
Volume: 286 (29) Issue: 29 Pages: 25519-25530
10.1074/jbc.m111.254029
Volume: 52 (2) Issue: 2 Pages: 413-420
10.1093/pcp/pcq205
10029709233
http://bsw3.naist.jp/takayama