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个人简介

学习经历 1980年9月-1984年7月,浙江农业大学宁波分校,本科 1984年9月-1987年7月,原江苏农学院,硕士研究生 1993年9月-1996年7月,复旦大学,博士研究生,获理学博士学位 工作经历 1987年7月-2003年9月,扬州大学,助教、讲师、副教授、教授 1997年2月-1999年2月,德国Hohenheim大学,博士后 1999年2月-2002年6月,美国Illinois大学,博士后 2003年- 中国农业大学,教授 课题项目 项目名称:小麦等作物功能基因组研究与应用,编号:2016YFD0101002,科技部,2016-2020,6533万。负责人 项目名称:玉米粗缩病抗性资源筛选、抗病QTL克隆和分子育种,编号:31461143018,国家自然基金会, 2015-2019,249万,负责人 项目名称:玉米抗灰斑病主效QTL-qRgls2的克隆和分子机理探索,编号:31471500,国家自然基金会,2015-2019,89万,负责人 项目名称:玉米籽粒关键性状的分子遗传学基础,编号:31421005, 国家自然基金会,2015-2020,230万,参加

研究领域

研究方向:玉米抗病和分子育种 病害是我国玉米生产最主要的限制因子,每年造成的产量损失约占总产的10%以上。近年来,随着极端天气的频发、土壤病原菌的累积,加上生产中的长年连作,玉米病害且呈越演越烈之势。因此,挖掘抗病基因、阐明其抗病机制、通过分子育种从遗传上改良抗性在玉米生产上显得尤其重要、迫切。 1、玉米重要抗病QTL基因挖掘 针对我国玉米生产最主要的病害,我们实验室已克隆了9个抗病数量性状(QTL)基因:ZmWAK(抗丝黑穗病),ZmCCT和ZmUgAD(抗茎腐病),ZmAuxRP1(抗茎腐病、穗粒腐病)ZmTrxh和ZmABP1(抗矮花叶病),ZmGDI(抗粗缩病)以及ZmWAK-RLK1和ZmCAMK(抗灰斑病)。目前,实验室主要集中在玉米穗粒腐病抗病QTL基因挖掘。 2. 玉米数量抗病的分子机制 对各个基因的抗病分子机理进行了深入的研究,发现抗病QTL基因与典型R基因介导的抗性在分子机制上差异极大。例如,玉米ZmWAK介导的丝黑穗病抗性呈现独特的时空特征,病害症状主要在成株期的果穗上发生,而抗病基因则在苗期的中胚轴中被诱导,抑制病原菌向地上部生长,达到抗病目的。玉米抗茎腐病的主效QTL基因ZmCCT处于一种“待激发状态”,病原菌一旦侵染后就被激活,进而启动下游的免疫反应;微效抗病QTL基因ZmAuxRP1协调生长素和次生抗病代谢产物“丁布”的合成,调节生长和防御的平衡;玉米抗矮化叶病的二个基因ZmTrxh和ZmABP1编码的蛋白均具有分子伴侣功能,分别在病毒侵染的早期和后期结合病毒蛋白和寄主靶蛋白,阻止病毒利用寄主蛋白进行扩增、翻译,从而达到抗病目的。 3. 玉米抗病分子育种 获得抗病QTL基因后,在玉米各类种质资源中筛选优良的自然等位变异,开发相应的抗病分子标记。将每个克隆或筛选到的自然优良抗病基因导入到一组骨干系中,创制抗病基因供体,缩短标记辅助导入的周期。结果表明,携带抗病基因的玉米材料在抗性上获得了显著的提高,有很强的利用价值。通过专利转让、横向合作和联合研究等方式,相关成果已广泛应用到我国玉米抗病育种中,创造了一大批新的抗病材料。 4. 玉米宜机收研究 随着我国社会的高速发展,劳动力成本越来越高,现代农业势必向着全程机械化、集约化的方向发展。抗倒、耐密、抗病等宜机收性状已成为今后玉米育种的主攻方向。为此,我们开展抗穗粒腐病,抑制光周期敏感、茎秆强度和籽粒脱水等性状的研究,试图通过相关基因的挖掘和聚合培育新一代适宜机收的玉米品种。

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(*Corresponding author; #These authors contributed equally) Ye JR#, Zhong T#, Zhang DF#, Ma CY, Wang LN, Yao LS, Zhang QQ, Zhu M, Xu ML*. 2018. The auxin-regulated protein ZmAuxRP1 coordinates the balance between root growth and stalk-rot disease resistance in maize. Molecular Plant 12: 360-373 Leng PF, Lübberstedt T, Xu ML*. 2017. Genomics-assisted breeding-A revolutionary strategy for crop improvement. Journal of Integrative Agriculture, 16: 2674-2685 Li YP, Xu ML*. 2017. CCT family genes in cereal crops: A current overview. Crop Journal, 5:449-458. Li YP, Tong LX, Deng LL, Liu QY, Xing YX, Wang C, Liu BS, Yang XH, Xu ML*. 2017. Evaluation of ZmCCT haplotypes for genetic improvement of maize hybrids. Theor Appl Genet 130: 2587-2600. Leng PF#, Ji Q#, Asp T, Frei, UK, Ingvardsen CR, Xing YZ, Studer B, Redinbaugh M, Jones M, Gajjar P, Liu SS, Fei Li, Pan GT, Xu ML*, Lübberstedt T*. 2017. Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize. Molecular Plant 10: 1357-1360 Wang C#, Yang Q#, Wang WX#, Li YP, Guo YL, Zhang DF, Ma XN, Song W, Zhao JR, Xu ML*. 2017. A transposon-directed epigenetic change in ZmCCT underlies quantitative resistance to Gibberella stalk rot in maize. New Phytologist 215: 1503-1515 Ma CY, Ma XN, Yao LS, Liu YJ, Du FL, Yang XH, Xu ML*. 2017. qRfg3, a novel quantitative resistance locus against Gibberella stalk rot in maize. Theor Appl Genet 130: 1723–1734 Zhang N, Zhang BQ, Zuo WL, Xing YX, Konlasuk S, Tan GQ, Zhang QQ, Ye JR, Xu ML*. 2017. Cytological and Molecular Characterization of ZmWAK-Mediated Head-Smut Resistance in Maize. Plant-Microbe Interact 30:455-465 Yang Q, Balint-Kurti P*, Xu ML*. 2017. Quantitative disease resistance: dissection and adoption in maize. Molecular Plant, 10: 402-413 Liu QQ, Liu HH, Gong YQ, Tao YF,Jiang L, Zuo WL, Yang Q, Ye JR, Lai JS, Wu JY, Lübberstedt T, Xu ML*. 2017. An Atypical Thioredoxin Imparts Early Resistance to Sugarcane Mosaic Virus in Maize. Molecular Plant, 10:483-497. Zhao XR, Ye JR, Lai Wei L, Zhang N, Xing YX, Zuo WL, Chao Q, Tan GQ, Xu ML*. 2015. Inhibition of the spread of endophytic Sporisorium reilianum renders maize resistance to head smut. The Crop Journal, 3: 87-95 Konlasuk S. Xing YX. Zhang N. Zuo WL. Zhang BQ. Tan GQ. Xu ML*. 2015. ZmWAK, a quantitative resistance gene to head smut in maize, improves yield performance by reducing the endophytic pathogen Sporisorium reiliana. Mol Breeding, 35:174. DOI 10.1007/s11032-015-0325-2 Zuo WL#, Chao Q#, Zhang N#, Ye JR, Tan GQ, Li BL, Xing YX, Zhang BQ, Liu HJ, Fengler A. Kevin, Zhao J, Zhao XR, Chen YS, Lai JS, Yan JB, Xu ML*. 2015. A maize wall-associated kinase confers quantitative resistance to head smut. Nature Genetics, 47:151-157 Xu L, Zhang Y, Shao SQ, Chen W, Tan J, Zhu M, Zhong T, Fan XM and Xu ML*. 2014. High-resolution mapping and characterization of qRgls2, a major quantitative trait locus involved in maize resistance to gray leaf spot. BMC Plant Biology, 14:230 Zhang Y, Luebberstedt Thomas, Xu ML*. 2013. The Genetic and Molecular Basis of Plant Resistance to Pathogens. Journal of Genetics and Genomics 40: 23-35. Hou J, Xing YX, Zhang Y, Tao YF, Tan GQ, Xu ML*. 2013. Identification of quantitative trait loci for resistance to Curvularia leaf spot of maize. Mydica, 58:266-283 Ye JR, Guo YL, Zhang DF, Zhang N, Wang C, Xu ML*. 2013. Cytological and Molecular Characterization of QTL-qRfg1 Which Confers Resistance to Gibberella Stalk-Rot Disease in Maize. Mol. Plant-Microbe Interact. 26:1417-1428. Yang Q#, Li Z#, Li WQ#, Ku LX#, Wang C, Ye JR, Li K, Yang N, Li YP, Zhong T, Li JS, Chen YH*, Yan JB*, Yang XH*, Xu ML*. 2013. CACTA-like transposable element in ZmCCT attenuated photoperiod sensitivity and accelerated the post-domestication spread of maize. Proc Natl Acad Sci. 110: 16969–16974 Tao YF, Liu QC, Wang HH, Zhang YJ, Huang XY, Wang BB, Lai JS, Ye JR, Liu BS and Xu ML*. 2013. Identification and fine-mapping of a QTL, qMrdd1, that confers recessive resistance to maize rough dwarf disease. BMC Plant Biology, 13:145 Tao YF, Jiang L, Liu QQ, Zhang Y, Zhang R, Ingvardsen RC, Frei UK, Wang BB, Lai JS, Lübberstedt T and Xu ML*. 2013. Combined linkage and association mapping reveals candidates for Scmv1, a major locus involved in resistance to sugarcane mosaic virus (SCMV) in maize. BMC Plant Biology, 13:162 Zhang Y, Xu L, Fan XM, Tan J, Chen W, Xu ML*. 2012. QTL mapping of resistance to gray leaf spot in maize. Theor Appl Genet 125:1797-1808. Yang Q, Zhang DF, Xu ML*. 2012. A Sequential Quantitative Trait Locus Fine-Mapping Strategy Using Recombinant-Derived Progeny. Journal of Integrative Plant Biology, 54: 228–237 Ji Q, Zhang MJ, Lu JF, Wang HM, Lin B, Liu QQ, Chao Q, Zhang Y, Liu CX, Gu MH, Xu ML*. 2012. Molecular Basis Underlying the S5-Dependent Reproductive Isolation and Compatibility of Indica/Japonica Rice Hybrids. Plant Physiology, 158: 1319–1328 Ye JR, Xu ML. 2011. ActinbundlerPLIM2s are involved in the regulation of pollen development and tube growth in Arabidopsis. Journal of Plant Physiology 169:516-522 Zhang DF, Liu YJ, Guo YL, Yang Q, Ye JR, Chen SJ, Xu ML*. 2012 Fine-mapping of qRfg2, a QTL for resistance to Gibberella stalk rot in maize. Theor Appl Genet, 124:585–596. Zhao XR, Tan GQ, Xing YX, Wei L, Chao Q, Zuo WL, Lubberstedt T, Xu ML*. 2012. Marker-assisted introgression of qHSR1 to improve maize resistance to head smut. Mol Breeding, 30:1077–1088. Ji Q, Lu JF, Chao Q, Zhang Y, Zhang MJ, Gu MH, Xu ML*. 2010. Two sequence alterations, a 136-bp InDel and an A/C polymorphic site, in the S5 locus are associated with compatibility of indica/japonica hybrid in rice. J. Genet. Genomics 37:57-68 Yang Q, Yin GM, Guo YL, Zhang DF, Chen SJ, Xu ML*. 2010. A major QTL for resistance to Gibberella stalk rot in maize. Theor Appl Genet, 121:673-687 Lai JS#*, Li RQ#, Xu X#, Jin WW#, Xu ML#, Zhao HN, Xiang ZK, Song WB, Ying K, Zhang M, Jiao YP, Ni PX, Zhang JG, Li D, Guo XS, Ye KX, Jian M, Wang B, Zheng HS, Liang HQ, Zhang XQ, Wang SC, Cheng SJ, Li JS, Fu Y, Springer NM, Yang HM, Wang JA, Dai JR, Schnable PS*, and Wang J*. Genome-wide patterns of genetic variation among elite maize inbred lines. Nature Genetics, 2010, 42:1027-1030. Usarowska A, Dionisio G, Sarholz B, Piepho HP, Xu ML, Ingvardsen CR, Wenzel G, Lübberstedt T*. 2009. Validation of candidate genes putatively associated with resistance to SCMV and MDMV in maize (Zea mays L.) by expression profiling. BMC Plant Biology 2009, 9:15 doi:10.1186/1471-2229-9-15 Soria-Guerra R, Xu ML, Korban S*. 2008. Transgenic apple lines carrying vfa genes in tandem for resistance to apple scab. Hortscience 43:1156-1156. Chen YS, Chao Q, Tan GQ, Zhao J, Zhang MJ, Ji Q, and Xu ML*. 2008. Identification and fine-mapping of a major QTL conferring resistance against head smut in maize. Theor Appl Genet,117:1241. Chen JJ, Ding JH, Ouyang YD, Du HY, Yang JY, Cheng K, Zhao J, Qiu SQ, Zhang XL, Yao JL, Liu KD, Wang L, CG Xu, Li XH, Xue YB, Xia M, Ji Q, Lu JF, Xu ML, and Zhang QF*. 2008. A tri-allelic system of S5 is a major regulator of the reproductive barrier and compatibility of indica-japonica hybrids in rice. Proc Natl Acad Sci 105: 11436-11441 Jiang L, Ingvardsen CR, Lubberstedt T, Xu ML*. 2008. The Pic19 NBS-LRR gene family members are closely linked to Scmv1, but not involved in maize resistance to sugarcane mosaic virus. Genome, 51:673-684. Chen SH, Yang Y, Shi WW, Ji Q, He F, Zhang ZD, Cheng ZK, Liu XN, and Xu ML*. 2008. Badh2, encoding betaine aldehyde dehydrogenase, inhibits the biosynthesis of 2-acetyl-1-pyrroline, a major component in rice fragrance. Plant Cell 20: 1850-1861 Wen WE, Li GQ, He ZH, Yang WY, Xu ML, Xia XC*. 2008. Development of an STS marker closely linked to Yr26 against wheat stripe rust using the resistance gene-analog polymorphism (RGAP) technique. Mol Breed 22:507-515 Wang YJ, Yin GM, Yang Q, Tang JH, Lu XM, Korban SS, Xu ML*. 2008. Identification and isolation of Mu-flanking fragments from maize. J of Genetics and Genomics 35: 207-213 Malnoy M#, Xu ML#, Borejsza-Wysocka E, Korban SS*, and Aldwinckle HS*. 2008. Two receptor-like genes, Vfa1 and Vfa2, confer resistance to the fungal pathogen Venturia inaequalis inciting apple scab disease. Mol Plant-Microbe Interact 21:448-458. Shi WW, Yang Y, Chen SH, Xu ML*. 2008. Discovery of a new fragrance allele and the development of functional markers for the breeding of fragrant rice varieties. Mol Breed 22:185-192. Xiao WK, Zhao J, Fan SC, Li L, Dai JR, Xu ML*. 2007. Mapping of genome-wide resistance gene analogs (RGAs) in maize (Zea mays L.). Theor Appl Genet. 115:501-508. Wang GX, Chen Y, Zhao JR, Li L, Korban SS, Wang FG, Dai JR, Xu ML*. 2007. Mapping of defense response gene homologues and their association with resistance loci in maize. Journal of Integrative Plant Biology 49:1580-1598. Han YP, Gasic K, Sun FJ, Xu ML, Korban SS*. 2006. A gene encoding starching branching enzyme I (SBEI) in apple (Malus × domestica, Rosaceae) and its phylogenetic relationship to Sbe genes from other angiosperms. Molecular Phylogenetics and Evolution 43:852-863. Farrar K, Asp T, Lübberstedt T, Xu ML, Christiansen C, Thomas A, Humphreys M, Donnison I*. 2006. Construction and utilization of two Lolium perenne BAC libraries. Mol Breed. 19:15-23. Chen SH, Wu J, Yang Y, Shi WW, Xu ML*. 2006. The fgr gene responsible for rice fragrance was restricted within 69kb. Plant Science 171:505-514. Xiao WK, Xu ML*, Zhao JR, Wang FG, Li JS, Dai JR. 2006. Genome-wide isolation of resistance gene analogs in maize (Zea mays L.) Theor Appl Genet. 113:63-72. He Y, Han YP, Jiang L, Xu CW, Lu JF, Xu ML*. 2006. Functional analysis of starch-synthesis genes in determining rice eating and cooking qualities. Mol Breed 18:277-290. Ji Q, Lu JF, Chao Q, Gu MH, Xu ML*. 2005. Delimiting a rice wide-compatibility gene S5n to a 50 kb region. Theor Appl Genet 111: 1495- 1503. Xu ML, Li X and Korban SS*, 2004. DNA methylation alterations and exchanges during in vitro cellular differentiation in rose (Rosa hybrida L.). Theor Appl Genet 109:899-910. Xu ML and Korban SS*, 2004. Somatic variation plays a key role in driving the evolution of the Vf gene family that confer resistance to apple scab disease. Molecular Phylogenetics and Evolution 32:57-65. Huaracha, E.M., Xu ML, K. Gasic, E. Pauwels, A. van den Putte, J.W. Keulemans, and S.S. Korban*. 2004. Phenotypic reaction and genetic analysis using AFLP-derived SCARs for resistance to apple scab. J. Phytopathology 152:260-266. Han YP, Xu ML*, Liu XY, Yan CJ, Korban SS, Chen XL and Gu MH.2004. Genes coding for starch branching enzymes are major contributors to starch viscosity characteristics in waxy rice (Oryza sativa L.). Plant Science 166:357-364. Liu XY, Gu MH, Han YP, Ji Q, Lu JF, Gu SL, Zhang R, Li X, Chen JM, Korban S S and Xu ML*. 2003. Developing gene-tagged molecular markers for functional analysis of starch-synthesizing genes in rice (Oryza Sativa L.). Euphytica 135:345-353. Xu ML and Korban SS*. 2003. Positional cloning of the apple scab resistance gene Vf. Proc. XXVII Intl. Hort. Cong. Acta Hort. 625:79-87. Carr J, Xu ML and Korban SS*. 2003. Estimating genetic diversity in New Guinea impatiens. Proc. XXVII Intl. Hort. Cong. 623:161-168. Du?le C, Quin M, Melchinger AE, Xu ML and Luebberstedt T*, 2003. Saturation of two chromosome regions conferring resistance to SCMV by targeted BSA. Theor Appl Genet 106:485-493. Carr, J., Xu ML, J.W. Dudley, and S.S. Korban*. 2003. AFLP analysis of genetic variability in New Guinea impatiens. Theor Appl Genet 106: 1509-1516. Huaracha E, Xu ML, Pauwels E, Keulemans W and Korban SS*, 2002. Comparison of marker-assisted selection and phenotypic selection for apple scab resistance in a set of apple progenies Theor Appl Genet 108:274-479. Li XQ, Xu ML and Korban SS*, 2002. DNA methylation profiles differ between field- and in vitro-grown leaves of apple. Journal of plant physiology 159:1229-1234. Xu ML and Korban SS*, 2002. A cluster of four active receptor-like genes reside in the Vf locus that confers resistance to apple scab disease. Genetics 162:1995-2006. Du?le CM, Quint M, Xu ML, Melchinger AE and Luebberstedt T*, 2002. Conversion of AFLP fragments tightly linked to SCMV resistance genes Scmv1 and Scmv2 into simple PCR-based markers. Theor Appl Genet 105: 1190-1195. Quint M, Mihaljevic R, Du?le CM, Xu ML, Melchinger AE and Luebberstedt T*, 2002. Genetic mapping of candidate genes for SCMV resistance in maize and conversion into RGA-CAPS markers. Theor Appl Genet 105:355-363. Xu ML and Korban SS*, 2002. AFLP-derived SCARs facilitate construction of a 1.1 Mb sequence-ready map of a region that spans the Vf locus in the apple genome. Plant Mol Biology 50: 803-818. Korban SS and Xu ML*, 2002. Going after the scab resistance gene. Trans. Ill. Hort. Soc. 134:15-20. Xu ML, Korban SS, Song JQ, and Jiang JM, 2002. Constructing a bacterial artificial chromosome library of the apple cultivar GoldRush. Acta Hort. 595:103-112. Xu ML, Song JQ, Cheng ZK, Jiang JM and Korban SS*, 2001. A bacterial artificial chromosome (BAC) library of Malus floribunda 821 and contig construction for positional cloning of the apple scab resistance gene Vf. Genome 44:1104-1113. Xu ML, Huaracha E and Korban SS*, 2001. Development of sequence-characterized amplified regions (SCARs) from amplified fragment length polymorphism (AFLP) markers tightly linked to the Vf gene in apple. Genome 44:63-70. Xu ML, Li XQ and Korban SS*, 2000. AFLP-based detection of DNA methylation. Plant Mol Biol Rep 18: 361-368. Xu ML and Korban SS*, 2000. Saturation mapping of the apple scab resistance gene Vf using AFLP markers. Theor Appl Genet 101: 844-851. Xu ML, Melchinger AE and Luebberstedt T*, 2000. Origin of Scm1 and Scm2 - two loci conferring resistance to sugarcane mosaic virus (SCMV) in maize. Theor Appl Genet 100: 934-941. Luebberstedt T, Xia XC, Xu ML, Kuntze L, Melchinger AE*, 1999. Inheritance of resistance to SCMV and MDMV in European maize. In: Proc. of the XVth EUCARPIA 1998 General Congress: Genetics and breeding for crop quality and resistance, G.T.S. Mugnozza (ed.), pp. 241-250 Kluwer Academic Publishers, Dordrecht, The Netherlands Xu ML, Melchinger AE, Xia XC and Luebberstedt T*, 1999. High-resolution mapping of loci conferring resistance to sugarcane mosaic virus in maize using RFLP, SSR, and AFLP markers. Mol Gen Genet 261: 574-581. Xu ML, Melchinger AE and Luebberstedt T*, 1999. Species-specific detection of the maize pathogens Sporisorium reiliana and Ustilago maydis by dot blot hybridization and PCR-based assays. Plant Dis 83: 390-395.

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