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Expression Pattern Analysis of Four Mlo Genes from Rose

文献类型： 外文期刊

作者： Qiu, Xianqin 1 ; Jian, Hongying 1 ; Wang, Qigang 1 ; Tang, Kaixue 1 ; Bao, Manzhu 2 ;

作者机构： 1.Yunnan Acad Agr Sci, Flower Res Inst, Natl Engn Res Ctr Ornamental Hort, Yunnan Flower Breeding Key Lab, Kunming 650200, Peoples R China

2.Huazhong Agr Univ, Key Lab Hort Plant Biol, Minist Educ, Coll Hort & Forestry Sci, Wuhan 430070, Peoples R China

关键词： Rosa;mildew resistance locus o;Podosphaera pannosa;real-time quantitative PCR;powdery mildew

期刊名称：JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE （ 影响因子：1.144； 五年影响因子：1.617 ）

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收录情况： SCI

摘要： Rose (Rosa hybrida) is one of the most economically important ornamentals worldwide. Powdery mildew (Podosphaera pannosa)is a major disease in cut and potted roses. In dicots such as arabidopsis (Arabidopsis thaliana), pea (Pisum sativum), and tomato (Solanum lycopersicum), loss-of-function mutations in mildew resistance locus o (Mlo) genes confer high levels of broad-spectrum resistance to powdery mildew. Here, we present spatiotemporal expression patterns of four Mlo genes from R. hybrida based on real-time fluorescence quantitative polymerase chain reaction (qPCR). Phylogenetically closely related R. hybrida mildew resistance locus o (RhMLO) genes showed similar or overlapping tissue specificity and analogous responsiveness to external stimuli. RhMLO1 and RhMLO2 transcriptional levels were upregulated more than 2-fold by external stimuli, especially by inoculation with powdery mildew fungus P. pannosa at early time points. This phenomenon was not found for RhMLO3 or RhMLO4. The results indicated that RhMLO1 and RhMLO2 might play important roles in rose powdery mildew pathogen interactions. Our findings may provide useful information for the study of mechanisms of powdery mildew susceptibility in rose.

  • 相关文献

[1]Isolation, molecular characterization, and mapping of four rose MLO orthologs. Kaufmann, Helgard,Wehmeyer, Juliane,Debener, Thomas,Qiu, Xianqin. 2012

[2]Antisense RhMLO1 Gene Transformation Enhances Resistance to the Powdery Mildew Pathogen in Rosa multiflora. Qiu, Xianqin,Bao, Manzhu,Qiu, Xianqin,Wang, Qigang,Zhang, Hao,Jian, Hongying,Zhou, Ningning,Ji, Cheng,Yan, Huijun,Tang, Kaixue.

[3]Karyological diversity of wild Rosa in Yunnan, southwestern China. Jian, Hong Ying,Zhang, Ting,Wang, Qi Gang,Li, Shu Bin,Zhang, Hao,Tang, Kai Xue.

[4]Phylogenetic relationships of wild roses in China based on nrDNA and matK data. Qiu, Xianqin,Zhang, Hao,Wang, Qigang,Jian, Hongying,Yan, Huijun,Zhang, Ting,Wang, Jihua,Tang, Kaixue.

[5]Phylogenetic Relationships in the Genus Rosa Revisited Based on rpl16, trnL-F, and atpB-rbcL Sequences. Liu, Chengyuan,Xia, Tao,Fang, Yanming,Liu, Chengyuan,Wang, Hui,Wang, Guoliang,Zhang, Shouzhou,Wang, Qigang.

[6]Genetic Relationships of Wild Roses, Old Garden Roses, and Modern Roses Based on Internal Transcribed Spacers and matK Sequences. Qiu, Xianqin,Zhang, Hao,Jian, Hongying,Wang, Qigang,Zhou, Ningning,Yan, Huijun,Zhang, Ting,Tang, Kaixue.

[7]Two major er1 alleles confer powdery mildew resistance in three pea cultivars bred in Yunnan Province, China. Sun, Suli,Duan, Canxing,Zhu, Zhendong,He, Yuhua,Dai, Cheng. 2016

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