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A WUSCHEL-like homeobox gene, OsWOX3B responses to NUDA/GL-1 locus in rice

文献类型： 外文期刊

作者： Zhang, Honglei 2 ; Wu, Kun 1 ; Wang, Yufeng 2 ; Peng, Yu 2 ; Hu, Fengyi 3 ; Wen, Lu 4 ; Han, Bin 2 ; Qian, Qian 1 ; Teng, Sh 1 ;

作者机构： 1.Chinese Acad Agr Sci, China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China

2.Chinese Acad Sci, Shanghai Inst Biol Sci, Shanghai Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China

3.Yunnan Acad Agr Sci, Inst Food Crops, Kunming 650205, Peoples R China

4.Puer Agr Res Inst, Puer 66500, Peoples R China

关键词： Yunnan nuda rice;Nuda/glabrous;Map-based cloning;WUSCHEL-like homeobox gene OsWOX3B

期刊名称：RICE （ 影响因子：4.783； 五年影响因子：5.23 ）

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收录情况： SCI

摘要： Background Most of the rice varieties are pubescent. However, the presence of trichomes is an undesirable characteristic in rice production because trichomes can cause atmospheric pollution. The use of glabrous rice varieties represents a solution tothis problem. Yunnan Nuda Rice, a glabrous cultivar that constitutes approximately 20% of rice germplasms in Yunnan can provide important recourse for breeding of glabrous rice varieties. Results The “Nuda” phenotype in Yunnan Nuda Rice was found to becontrolled by a single recessive allelic gene within the well-characterized GL-1 locus. A high-resolution genetic and physical map was constructed using 1,192 Nuda individuals from the F2 population that was delivered from the cross between the Yunnan Nuda variety HMK and the pubescent TN1 variety. The NUDA/GL-1 gene was mapped to a 28.5 kb region containing six annotated genes based on the Nipponbare genomic sequence. By comparing the sequences and expression patterns of different pubescent and glabrous varieties, LOC_Os05g02730, a WUSCHEL-like homeobox gene (OsWOX3B) was identified as the candidate gene. This hypothesis was confirmed by RNA interference (RNAi) and transgenic complementation. Trichome deficiency in RNAi lines was associated with increased efficiency of grain packaging but did not affect the main agronomic traits. Conclusion NUDA/GL-1 locus encodes OsWOX3B gene.

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