当前位置: 首页 > English > Research group > 正文 >

Zhang Lianquan

作者:   审稿人:     时间: 2014-12-28 点击次数:


name:Lian-Quan Zhang
education:PhD professional title:Associate Professor
duty: telephone:86-28-82650313
email:zhanglianquan1977@126.com fax:86-28-82650350

Resume:

Education
2004-2007 Ph.D in Crop Genetics and Breeding, Sichuan Agricultural University, Yaan, Sichuan, China
2001-2004 MS in Biochemistry and Molecular Biology, Sichuan Agricultural University, Yaan, Sichuan, China
1997-2001 BS in Agronomy, Laiyang Agricultural College, Laiyang, Shandong, China
2010- Postdoctor in Agriculture and Agri-Food Canada, Ottawa
Employment History
2006.12- Assitant Professor, Triticeae Research Institute, Sichuan Agricultural University


Research Interests:

Polyploidy has been found to be very common in plants. Bread or common wheat (Triticum aestivum L., 2n=42) is a good example of allopolyploid made up of three diploid genomes A, B and D. Bread wheat has undergone two polyploidizations during its evolution. By the mimic of common wheat evolution, many synthetic hexaploid wheats have been produced. The synthetic wheat is very useful for genetic improvement of modern wheat. Moreover, common wheat has many distinctive scientific characteristics which make it an interesting model for the study of the organization and evolution of plant genomes. In our study, we studied the allohexaploidization by analyzing the process of artificially synthetic hexaploid wheat with emphasis on its application in genetics and breeding.
1. The crossability of Triticum turgidum with Aegilops tauschii
The crossability of Triticum turgidum with Aegilops tauschii are first investigated systematically. Without using embryo rescue technique, many hybrid seeds of tetraploid wheat with Ae. tauschii could germinate and produce plants in the present study. The higher crossabilities compared with the control in lines 7D(7A) and 4D(4B) suggested that 7A and 4B in tetraploid wheat cv. Langdon carried dominant crossability alleles inhibiting crossability with Ae. tauschii.
2. Meiotic restriction in emmer wheat is controlled by one or more nuclear genes that continue to function in derived lines.
Triticum turgidum ssp. turgidum has meiotic restitution gene(s). “Mitosis-like meiosis” is the functional mechanism of the meiotic restitution gene(s). Test crosses of the T. t. turgidum – Ae. tauschii amphidiploid with Ae. variabilis and rye suggested that the mitosis-like meiosis is controlled by nuclear gene(s) that are functional in the derived lines. This discovery implicates a potential application of such genes in production of double haploids.
3. The synthesis of new synthetic hexaploid wheats (Syn-SAU-N-X-Y) and new nullisomic-tetrasomic lines (Syn-SAU NXTY)
Lots of new synthetic hexaploid wheats have been obtained from crosses of five T. turgidum L. lines with Ae. tauschii, which were formed by chromosome autoduplication through unreduced gametes. Besides the values in wheat improvement, they are desirable materials for study of allohexaploidization due to without the using of chemical materials, such as embryo rescue and colchicine treatment during the synthetic process. By colchicine treatment of the hybrid plants between Triticum turgidum and Aegilops tauschii, a fertile wheat plant (SHW-L2) carrying 56 chromosomes was artificially synthesized.
New nullisomic-tetrasomic lines were obtained from crosses of Langdon D-genome substitution lines with Ae. tauschii, which were formed by chromosome autoduplication through unreduced gametes. They are different from previous Chinese Spring nullisomic-tetrasomic lines. The main differences were as follows: (1) for each of tetrasomics, there were four D chromosomes, two from Ae. tauschii and two from Chinese Spring; (2) they were obtained by manner of synthetic wheat, other genetic backgrounds were from T. turgidum L. and Ae. tauschii except that their two D chromosomes of the corresponding tetrasomics were from Chinese Spring.



Publications:

►Zhang LQ, Zhang L, Luo JT, Chen WJ, Hao M, Liu BL, Yan ZH, Zhang B, Zhang HG, Zheng YL, Liu DC*, Yen Y* (2011) Synthesizing double haploid hexaploid wheat populations based on a spontaneous alloploidization process. J Genet Genomics, 38:89-94
►Zhang LQ, Liu DC, Zheng YL, Yan ZH, Dai SF, Li YF, Jiang Q, Ye YQ, Yen Y (2010) Frequent occurrence of unreduced gametes in Triticum turgidum-Aegilops tauschii hybrids. Euphytica 172:285–294
►Wang CJ, Zhang LQ, Dai SF, Zheng YL, Zhang HG, Liu DC (2010) Formation of unreduced gametes is impeded by homologous chromosome pairing in tetraploid Triticum turgidum x Aegilops tauschii hybrids. Euphytica 175: 323–329
►Yang YW, Zhang LQ, Yen Y*, Zheng YL, Liu DC (2010) Cytological evidence on meiotic restitution in pentaploid F1 hybrids between synthetic hexaploid wheat and Aegilops variabilis. Caryologia 63(4): 354-358
►Zhang LQ, Zhang L, Luo JT, Chen WJ, Hao M, Liu BL, Yan ZH, Zhang B, Zhang HG, Zheng YL, Liu DC, Yen Y (2011) Synthesizing double haploid hexaploid wheat populations based on a spontaneous alloploidization process. J Genet Genomics, 38:89-94
►Zhang LQ, Chen QJ, Yuan ZW, Xiang ZG, Zheng YL, Liu DC (2008) The production of aneuhaploid and euhaploid sporocytes by meiotic restitution in fertile hybrids of durum wheat Langdon lines with Aegilops tauschii. J Genet Genomics 35:617–623
►Zhang LQ, Yan ZH, Dai SF, Chen QJ, Yuan ZW, Zheng YL, Liu DC (2008). The crossability of Triticum turgidum with Aegilops tauschii. Cereal Res Comm 37:417-427
►Zhang LQ, Liu DC, Lan XJ, Zheng YL, Yan ZH (2008) A synthetic wheat with 56 chromosomes derived from Triticum turgidum and Aegilops tauschii. J Appl Genet, 49(1): 41-44
►Chen QJ, Zhang LQ, Yuan ZW, Yan ZH, Zheng YL, Sun GL, Liu DC (2008) Empirical verification of heterogeneous DNA fragments generated from wheat genome-specific SSR primers. Can J Plant Sci, 88:1065-1071
►Zhang LQ, Yen Y, Zheng YL, Liu DC (2007) Meiotic restriction in emmer wheat is controlled by one or more nuclear genes that continue to function in derived lines. Sex Plant Reprod 20:159–166
►Zhang LQ, Sun GL, Yan ZH, Chen QiJ, Yuan ZW, Lan XJ, Zheng YL, Liu DC (2007) Comparison of newly synthetic hexaploid wheat with its donors on SSR products with emphasis on the utilization of SSR markers. J genet Genom, 2007, 34 (10): 939-946
►Zhang Lian-quan, Liu Deng-cai, Yan Ze-hong & Zheng You-liang (2005). Alien DNA introgression and wheat DNA rearrangements in a stable wheat line derived from the early generation of distant hybridization. Science in China Ser. C Life Science 48(5): 424-433.
►Zhang Lian-quan, Liu Deng-cai, Yan Ze-hong, Lan Xiu-jin, Zheng You-liang & Zhou, You-hong (2004). Rapid changes of microsatellite flanking sequence in the allopolyploidization of new synthesized hexaploid wheat. Science in China Ser. C Life Science 47(6): 553-561.

 

上一篇:Zhang Hai-Qin

下一篇:Ji-Rui Wang