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| 著者 | Yi J., Kim S.R., Lee D.Y., Moon S., Lee Y.S., Jung K.H., Hwang I., An G. | |
| タイトル | The rice gene, DEFECTIVE TAPETUM AND MEIOCYTES 1 (DTM1), is required for early tapetum development and meiosis. | |
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Abstract: Tapetum development and meiosis play crucial roles in anther development. Here we identified a rice gene, DEFECTIVE TAPETUM AND MEIOCYTES 1 (DTM1), which controls the early stages of that development. This gene encodes for an endoplasmic reticulum (ER) membrane protein that is present only in cereals. Our T-DNA insertion mutations gave rise to abnormal tapetal formation. Cellular organelles, especially the ER, were underdeveloped, which led to hampered differentiation and degeneration of the tapetum. In addition, the development of pollen mother cells was arrested at the early stages of meiotic prophase I. RNA in-situ hybridization analyses showed that DTM1 transcripts were most abundant in tapetal cells at Stages 6 and 7, and moderately in the pollen mother cells and meiocytes. Transcripts of UDT1, which functions in tapetum development during early meiosis, were reduced in dtm1 anthers, as were those of pair1, which is involved in chromosome-pairing and synapsis during meiosis. However, expression of msp1 and MEL1, which function in anther wall specification and germ cell division, respectively, was not altered in the dtm1 mutant. Moreover, transcripts of DTM1 were reduced in msp1 mutant anthers, but not in UDT1 and pair1 mutants. These results, together with their mutant phenotypes, suggest that DTM1 plays important roles in ER membrane during early tapetum development, functioning after msp1 and before UDT1, and also in meiocyte development, after MEL1 and before pair1. |
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| 掲載誌 | Plant J. | |
| Country | South Korea | |
| 刊数 | 70(2) | |
| ページ | 256-70 | |
| 発刊年 | 2012 | |
| PubMed ID | 22111585 | |
| PubMed Central ID | - | |
| DOI | - | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | C6 CP1 DTM1 G1 MEL1 MSP1 OSC4 PAIR1 PSS1 UDT1 | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
- |
| 突然変異系統(遺伝研 Collection) | - | |
| 種子不稔系統 | - | |
| 致死変異体系統 | - | |
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組織別発生段階 - 突然変異系統(遺伝子) |
- | |
| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
