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A Germ Cell Specific Gene of the ARGONAUTE Family is Essential for the Progression of Premeiotic Mitosis and Meiosis During Sporogenesis in Rice

Overview
Journal Plant Cell
Specialties Biology
Cell Biology
Date 2007 Aug 7
PMID 17675402
Citations 181
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Abstract

The rice (Oryza sativa) genome contains 18 copies of genes of the ARGONAUTE (AGO) family. Although AGO members play important roles in RNA-mediated silencing during plant development, a family member that is specifically involved in sexual reproduction has not been identified in plants. We identified the rice AGO gene MEIOSIS ARRESTED AT LEPTOTENE1 (MEL1) from the analysis of seed-sterile mutants. In the mel1 mutant, chromosome condensation was arrested at early meiotic stages and irregularly sized, multinucleated, and vacuolated pollen mother cells (PMCs) frequently appeared in developing anthers. In addition, histone H3 lysine-9 dimethylation of pericentromeres was rarely reduced and modification of the nucleolar-organizing region was altered in mel1 mutant PMCs. The mutation also affected female germ cell development. These results indicate that the germ cell-specific rice MEL1 gene regulates the cell division of premeiotic germ cells, the proper modification of meiotic chromosomes, and the faithful progression of meiosis, probably via small RNA-mediated gene silencing, but not the initiation and establishment of germ cells themselves.

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References
1.
Yamazaki M, Tsugawa H, Miyao A, Yano M, Wu J, Yamamoto S . The rice retrotransposon Tos17 prefers low-copy-number sequences as integration targets. Mol Genet Genomics. 2001; 265(2):336-44. DOI: 10.1007/s004380000421. View

2.
Reiser L, Fischer R . The Ovule and the Embryo Sac. Plant Cell. 1993; 5(10):1291-1301. PMC: 160362. DOI: 10.1105/tpc.5.10.1291. View

3.
Nonomura K, Miyoshi K, Eiguchi M, Suzuki T, Miyao A, Hirochika H . The MSP1 gene is necessary to restrict the number of cells entering into male and female sporogenesis and to initiate anther wall formation in rice. Plant Cell. 2003; 15(8):1728-39. PMC: 167165. DOI: 10.1105/tpc.012401. View

4.
Nishimura A, Ito M, Kamiya N, Sato Y, Matsuoka M . OsPNH1 regulates leaf development and maintenance of the shoot apical meristem in rice. Plant J. 2002; 30(2):189-201. DOI: 10.1046/j.1365-313x.2002.01279.x. View

5.
Carmell M, Xuan Z, Zhang M, Hannon G . The Argonaute family: tentacles that reach into RNAi, developmental control, stem cell maintenance, and tumorigenesis. Genes Dev. 2002; 16(21):2733-42. DOI: 10.1101/gad.1026102. View