MAA3 (MAGATAMA3) helicase gene is required for female gametophyte development and pollen tube guidance in Arabidopsis thaliana.
The female gametophyte plays a central role in the sexual reproduction of angiosperms. We previously isolated the maa3 (magatama3) mutant of Arabidopsis thaliana, defective in development of the female gametophyte, micropylar pollen tube guidance, and preventing the attraction of multiple pollen tubes. We here observed that the nucleolus of polar nuclei is small, and that the fusion of polar nuclei often did not occur at the time of pollination. The MAA3 gene encodes a homolog of yeast Sen1 helicase, required for RNA metabolism. It is suggested that MAA3 may regulate RNA molecules responsible for nucleolar organization and pollen tube guidance.
Shimizu
Kentaro K
KK
Department of Botany, Graduate School of Science, Kyoto University, Kitashirakawa-oiwake, Sakyo, Kyoto, 606-8502 Japan. shimizu@botinst.uzh.ch
Ito
Toshiro
T
Ishiguro
Sumie
S
Okada
Kiyotaka
K
D017360:Arabidopsis / Q000166:cytology / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics*; D002466:Cell Nucleolus; D004269:DNA, Bacterial / Q000235:genetics; D018744:DNA, Plant / Q000235:genetics; D005718:Gametogenesis / Q000235:genetics*; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D006579:Heterozygote; D008969:Molecular Sequence Data; D016254:Mutagenesis, Insertional; D009154:Mutation; D010641:Phenotype; D053205:Pollen Tube / Q000254:growth & development*; D020365:RNA Helicases / Q000235:genetics*; D018749:RNA, Plant / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
D029681:Arabidopsis Proteins; D004269:DNA, Bacterial; D018744:DNA, Plant; D018749:RNA, Plant; C036483:T-DNA; D020365:RNA Helicases
Annu Rev Genet. 2002;36:99-124
12429688
Plant J. 2008 Dec;56(6):913-21
18702672
Nat Genet. 2004 Mar;36(3):225-7
14770181
Plant Cell. 2007 Nov;19(11):3563-77
18055609
Mol Cell Biol. 1992 May;12(5):2154-64
1569945
Mol Cell. 2006 Dec 8;24(5):735-746
17157256
Science. 2005 Jan 28;307(5709):573-6
15681383
Genes Dev. 1997 Nov 15;11(22):2983-95
9367981
Genetics. 1988 Apr;118(4):609-17
3284787
Development. 2000 Oct;127(20):4511-8
11003848
Genes Dev. 2008 Apr 15;22(8):1082-92
18413718
Plant J. 1996 Jul;10(1):107-21
8758981
Nature. 2001 Sep 20;413(6853):327-31
11565036
Plant Cell. 2005 Nov;17(11):2981-92
16214903
Biochemistry. 1999 Nov 2;38(44):14697-710
10545196
Nucleic Acids Res. 2006 Jan 1;34(Database issue):D257-60
16381859
Mol Gen Genet. 1995 Dec 20;249(6):571-84
8544822
Cold Spring Harb Symp Quant Biol. 1997;62:35-47
9598334
Plant Cell. 2001 Oct;13(10):2191-209
11595796
PLoS Biol. 2007 Mar;5(3):e47
17326723
Curr Opin Plant Biol. 2007 Dec;10(6):633-8
17851110
Science. 2001 Aug 24;293(5534):1480-3
11520985