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| 著者 | Chang Z., Chen Z., Yan W., Xie G., Lu J., Wang N., Lu Q., Yao N., Yang G., Xia J., Tang X. | |
| タイトル | An ABC transporter, OsABCG26, is required for anther cuticle and pollen exine formation and pollen-pistil interactions in rice. | |
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Abstract: Wax, cutin and sporopollenin are essential components for the formation of the anther cuticle and the pollen exine, respectively. Their lipid precursors are synthesized by secretory tapetal cells and transported to the anther and microspore surface for deposition. However, the molecular mechanisms involved in the formation of the anther cuticle and pollen exine are poorly understood in rice. Here, we characterized a rice male sterile mutant OsABCG26. Molecular cloning and sequence analysis revealed a point mutation in the gene encoding an ATP binding cassette transporter G26 (OsABCG26). OsABCG26 was specifically expressed in the anther and pistil. Cytological analysis revealed defects in tapetal cells, lipidic Ubisch bodies, pollen exine, and anther cuticle in the OsABCG26 mutant. Expression of some key genes involved in lipid metabolism and transport, such as UDT1, WDA1, CYP704B2, OsABCG15, OsC4 and OsC6, was significantly altered in OsABCG26 anther, possibly due to a disturbance in the homeostasis of anther lipid metabolism and transport. Additionally, wild-type pollen tubes showed a growth defect in OsABCG26 pistils, leading to low seed setting in OsABCG26 cross-pollinated with the wild-type pollen. These results indicated that OsABCG26 plays an important role in anther cuticle and pollen exine formation and pollen-pistil interactions in rice. |
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| 掲載誌 | Plant Sci. | |
| Country | China | |
| 刊数 | 253 | |
| ページ | 21-30 | |
| 発刊年 | 2016 | |
| PubMed ID | 27968990 | |
| PubMed Central ID | - | |
| DOI | 10.1016/j.plantsci.2016.09.006 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | ABCG15 ABCG26 C6 CYP704B2 OSC4 UDT1 WDA1 | |
| 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 | - | |
