OsABCG15 encodes a membrane protein that plays an important role in anther cuticle and pollen exine formation in rice.
OsABCG15 encodes a membrane protein that plays an important role in anther cuticle and pollen exine formation in rice.
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OsABCG15 编码一种膜蛋白，在水稻花药角质层和花粉外壁的形成中发挥重要作用
DOI：
10.1007/s00299-014-1666-8
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发表时间：
2014-11
影响因子：
6.2
通讯作者：
Zhang Y
中科院分区：
文献类型：
--
作者：
Wu L;Guan Y;Wu Z;Yang K;Lv J;Converse R;Huang Y;Mao J;Zhao Y;Wang Z;Min H;Kan D;Zhang Y
Key messageAn ABC transporter gene (OsABCG15) was proven to be involved in pollen development in rice. The corresponding protein was localized on the plasma membrane using subcellular localization.AbstractWax, cutin, and sporopollenin are important for normal development of the anther cuticle and pollen exine, respectively. Their lipid soluble precursors, which are produced in the tapetum, are then secreted and transferred to the anther and microspore surface for polymerization. However, little is known about the mechanisms underlying the transport of these precursors. Here, we identified and characterized a member of the G subfamily of ATP-binding cassette (ABC) transporters, OsABCG15, which is required for the secretion of these lipid-soluble precursors in rice. Using map-based cloning, we found a spontaneous A-to-C transition in the fourth exon of OsABCG15 that caused an amino acid substitution of Thr-to-Pro in the predicted ATP-binding domain of the protein sequence. This osabcg15 mutant failed to produce any viable pollen and was completely male sterile. Histological analysis indicated that osabcg15 exhibited an undeveloped anther cuticle, enlarged middle layer, abnormal Ubisch body development, tapetum degeneration with a falling apart style, and collapsed pollen grains without detectable exine. OsABCG15 was expressed preferentially in the tapetum, and the fused GFP-OsABCG15 protein was localized to the plasma membrane. Our results suggested that OsABCG15 played an essential role in the formation of the rice anther cuticle and pollen exine. This role may include the secretion of the lipid precursors from the tapetum to facilitate the transfer of precursors to the surface of the anther epidermis as well as to microspores.
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影响因子：
2
作者：
Bolte, S;Talbot, C;Satiat-Jeunemaitre, B
通讯作者：
Satiat-Jeunemaitre, B
影响因子：
7.7
作者：
Kandel, S.;Sauveplane, V.;Pinot, F.
通讯作者：
Pinot, F.
影响因子：
11.6
作者：
Jung, Ki-Hong;Han, Min-Jung;An, Gynheung
通讯作者：
An, Gynheung
影响因子：
11.6
作者：
Li, Hui;Pinot, Franck;Zhang, Dabing
通讯作者：
Zhang, Dabing
影响因子：
46.9
作者：
Mentewab, A;Stewart, CN
通讯作者：
Stewart, CN