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Wheat powdery mildew resistance gene Pm64 derived from wild emmer (triticum turgidum ***) is tightly linked in repulsion with stripe rust resistance gene Yr5

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The Crop Journal 2019年第6期7卷 761-770页

作者： Deyun Zhang Keyu Zhu Lingli Dong Yong Liang Genqiao Li Tilin Fang Guanghao Guo Qiuhong Wu Jingzhong Xie Yongxing Chen Ping Lu Miaomiao Li Huaizhi Zhang Zhenzhong Wang Yan Zhang Qixin Sun Zhiyong Liu College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biologythe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Department of Plant Soil Sciences Oklahoma State UniversityStillwaterOK 74078USA China Rural Technology Development Center Beijing 100045China

Stripe rust and powdery mildew are both devastating diseases for durum and common *** of genes conferring resistance to one or more diseases in a single cultivar is an important breeding approach to provide broader spectra of resistances in wheat improvement. A new powdery mildew resistance gene originating from wild emmer(triticum turgidum ***) backcrossed into common wheat(T. aestivum) line WE35 was identified. It conferred an intermediate level of resistance to Blumeria graminis f. sp. tritici isolate E09 at the seedling stage and a high level of resistance at the adult plant stage. Genetic analysis showed that the powdery mildew resistance in WE35 was controlled by a dominant gene designated Pm64. Bulked segregant analysis(BSA) and molecular mapping indicated that Pm64 was located in chromosome bin 2 BL4-0.50–0.89. Polymorphic markers were developed from the corresponding genomic regions of Chinese Spring wheat and wild emmer accession Zavitan to delimit Pm64 to a 0.55 cM genetic interval between markers WGGBH1364 and WGGBH612, corresponding to a 15 Mb genomic region on Chinese Spring and Zavitan 2 BL, respectively. The genetic linkage map of Pm64 is critical for fine mapping and cloning. Pm64 was completely linked in repulsion with stripe rust resistance gene Yr5. Analysis of a larger segregating population might identify a recombinant line with both genes as a valuable resource in breeding for resistance to powdery mildew and stripe rust.

关键词： Blumeria graminis Genetic linkage map Yellow rust triticum aestivum triticum dicoccoides

Powdery mildew disease resistance and markerassisted screening at the Pm60 locus in wild diploid wheat triticum urartu

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The Crop Journal 2020年第2期8卷 252-259页

作者： Fukai Zhao Yinghui Li Baoju Yang Hongbo Yuan Cong Jin Lixun Zhou Hongcui Pei Lifang Zhao Yiwen Li Yilin Zhou Jiankun Xie Qian-Hua Shen College of Life Sciences Jiangxi Normal UniversityNanchang 330022JiangxiChina State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China

triticum urartu,a diploid wild wheat and progenitor of the A genome of bread wheat,is an important resource for resistance to powdery mildew fungus caused by Blumeria graminis ***(Bgt).In the present study we systematically characterized the interaction between the Bgt fungus and *** at the microscopic *** also tested 227 *** accessions for reaction to Bgt isolate E09 and discovered previously uncategorized powdery mildew resistance in this ***60 is a CC-NB-LRR type powdery mildew resistance gene that has at least three functional alleles,Pm60,Pm60a,and Pm60b.A marker-assisted screen targeting the Pm60 locus identified a non-functional allele of Pm60a,designated as Pm60a′.A sequence comparison of Pm60a′and Pm60a revealed that they differed by 58 SNPs and one 3-nucleotide *** on the sequence variations two molecular markers were developed to differentiate the functional Pm60a allele from the non-functional Pm60a′.Our screen revealed the presence of a previously uncharacterized powdery mildew resistance in *** and provides new insights into the Pm60 *** believe that the two molecular markers developed here and new *** resistant accessions will facilitate further identification of novel powdery mildew resistance genes and benefit breeding for powdery mildew resistance.

关键词： triticum breeding resistance

Characterization of a triticum aestivum-Aegilops germplasm line presenting reduced plant height and early maturation

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The Crop Journal 2017年第3期5卷 185-194页

作者： Yuhai Wang Qingdian Han Fang He Yinguang Bao Dongfeng Ming Honggang Wang Zaozhuang University Zaozhuang 277160ShandongChina Agronomy College Shandong Agricultural UniversityTai'an271018ShandongChina State Key Laboratory of Crop Biology of Shandong Agricultural University Tai'an271018ShandongChina Linyi University Linyi 276000ShandongChina

Plant height plays an important role in the potential and stability of crop yields and represents one of the most important agronomic traits of wheat. Although more than 30 dwarfing genes have been identified in wheat, only a few are used in wheat breeding, which has narrowed the genetic basis of newly developed varieties. Therefore, continually identifying new dwarfing genes is required to produce improved wheat cultivars. TA001 is a new germplasm line marked by reduced plant height and early maturation, and it was derived from a hybridization between the common wheat Yannong 15 and the Aegilops ventricosa × Aegilops cylindrica amphiploid SDAU18. In this study, cytological observations, agronomic trait examinations, genomic in situ hybridization(GISH), multicolor genomic in situ hybridization(mc-GISH), multicolor fluorescence in situ hybridization(mc-FISH), SSR analysis and seed storage protein electrophoresis were combined to determine the cytological stability, main agronomic traits, chromosomal constituents and seed storage protein subunits of TA001. Twenty-one bivalents were observed in most of the pollen mother cells at metaphase I(PMCs MI) in TA001, which housed 42 chromosomes, and the chromosomes in most pollen mother cells at anaphase I(PMCs AI)displayed 21/21 segregation. Twenty bivalents plus two univalents were simultaneously observed in most of the PMCs MI of the hybrid F_1 between TA001 and Yannong 15. TA001 possessed all chromosomes from genomes A, B and D except for chromosome 7B, which was replaced by one pair of N-genome chromosomes from Aegilops ventricosa. Several pairs of chromosomes in TA001 exhibited different FISH patterns from the equivalent chromosomes in Yannong 15. TA001 housed alien genetic materials from Aegilops ventricosa and Aegilops cylindrica and possessed new glutenin and gliadin subunits specific to SDAU18, as revealed by molecular marker analysis and protein electrophoresis respectively.

关键词： triticum aestivum Aegilops Disomic alien substitution Dwarfism Early maturation

Plant regeneration from intergeneric asymmetric hybridization between wheat (triticum aestivum L.) and Russian wildrye (Psathyrostachys juncea (Fisch.) Nevski) and wheat grass (Agropyron elongatum (Host) Nevski)

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Chinese Science Bulletin 1996年第16期41卷 1382-1386页

作者：夏光敏王槐陈惠民 Department of Biology Shandong University Jinan 250100 China

Particular attention has been paid to the donor-recipient method in the work of plant somatic hybridization. γ-or X-ray was generally used to irradiate one of the parents(donor) in order to obtain hybrids or asymmetric nuclear hybrids. But no application of ultraviolet rays (UV) has been reported yet. In the field of somatic hybridization of cereals,

关键词： triticum aestivum Psathyrostachys juncea Agropyron elongation asymmetric hybrid plants ultraviolet light

PRODUCTION AND CYTOGENETIC STUDY OF INTERGENERIC HYBRIDS BETWEEN triticum aestivum AND Agropyron desertorum

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Science China Chemistry 1991年第4期34卷 421-428页

作者：李立会董玉琛 Institute of Crop Germplasm Resources Chinese Academy of Agricultural Sciences Beijing 100081 PRC

Through embryo culture, intergeneric hybrids were produced between common wheat,triticum aestivum cv. Chinese Spring (CS) (2n= 6x = 42, AABBDD) and crested wheatgrass,Agropyron desertorum (2n =4x =28, PPPP) for the first time. Their F_2 and BC_1 seeds havealso been successfully obtained by selfing and backcrossing with wheat in F_1 hybrids. Theseedlings of all F_1 hybrids tended to resemble their female parent, but they had more tillers,and their spike characteristics were between their parents. Average meiotic chromosomepairing at MI of F_1 hybrids was: 6.62Ⅰ+ 8.20RingⅡ+ 4.16RodⅡ+0.57Ⅲ+ 0.35Ⅳ+0.06Ⅴ+0.03Ⅵ. The successful experience of hybridization of common wheat with A. desertorum,the reason for the high level of chromosome pairing and self-fertility in the F_1 hybrids werediscussed. The F_2 and BC_1 seeds obtained in F_1 hybrids are of great importance to theory andpractice.

关键词： triticum aestivum Agropyron desertorum intergeneric hybrid chromosome pairing chromosome promotion

Agrobacterium tumefaciens CAN TRANSFORM triticum aestivum AND Hordeum vulgare OF GRAMINEAE

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Science China Chemistry 1990年第1期33卷 27-34页

作者：邓万银林晓影邵启全 Institute of Genetics Academia Sinica Beijing 100012 PRC

So far there is no suitable vector system for the genetic engineering of monocotyledonous plants, especially cereal crops. It is first reported in this paper that Agrobacterium tumefaciens strains T37, A208 and B6 can transform some varieties of triticum aestivum and Hordeum vulgare to form swellings and tumors. Itis shown in the experiments that phenolic compound acetosyringone may promote the transformation process. In addition, inoculating agrobacteria on appropriate plant tissues is also proved to be the key step in achieving successful transformation. The host range of A. tumefaciens and the possibility of utilizing Ti plasmid as the vector for the gene transfer of cereal crops are discussed.

关键词： Agrobacterium tumefaciens triticum aestivum Hordeum vulgarz acetosyringone transformation of cereal crops.

Chromosomal location of yellow rust resistance gene(s) in triticum aestivum-Lophopyrum elongatum substitution lines

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Chinese Science Bulletin 1999年第4期44卷 344-348页

作者： Jianxin Ma Ronghua Zhou Yuchen Dong Jizeng Jia Chinese Acad Agr Sci Inst Crop Germplasm Resources Beijing 100081 Peoples R China

A set of T. aestivum-L. elongatum substitution lines were studied on yellow rust resistance at seedling stage, inheritance of the resistance and esterase-5 (Est-5) analysis. The results demonstrated that L. elongatum carried a new yellow rust resistance gene(s), which was dominant and located on chromosome 3E of L. elongatum. The biochemical locus encoding Est-5 was also located on chromosome 3E, and was tentatively named Est-E5, which was co-segregant with the Yr gene(s) in wheat background. In addition, the transmission frequencies of chromosome 3E in 3A/3E and 3D/3E hybrids selfing were significantly higher than that of chromosome 3E in 3B/3E hybrid, which was probably due to the difference on genetic relationships among A, B, D and E genomes.

关键词： triticum aestivum-Lophopyrum elongatum substitution lines yellow rust resistance gene location biochemical marker.

A natural variation of an SVP MADS-box transcription factor in triticum petropavlovskyi leads to its ectopic expression and contributes to elongated glume

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Molecular Plant 2021年第9期14卷 1408-1411页

作者： Jin Xiao Yan Chen Yifan Lu Zhipeng Liu Dongmei Si Tao Xu Li Sun Zongkuan Wang Chunxia Yuan Haojie Sun Xu Zhang Mingxing Wen Luyang Wei Wenli Zhang Haiyan Wang Xiue Wang State Key Laboratory of Crop Genetics and Germplasm Enhancement Cytogenetics InstituteNanjing Agricultural University/JCIC-MCPNanjingJiangsu 210095China

Dear Editor,triticum petropavlovskyi,commonly known as Xinjiang rice wheat,is a unique hexaploidy wheat grown in the Xinjiang *** is marked by its elongated glume(Eg)trait,which is controlled by gene P1pet located on chromosome 7A(Wang et al.,2002;Watanabe and Imamura,2002).The origin of *** has been *** is generally accepted that P1pet was introduced from tetraploid polish wheat(***)via a hybridization with hexaploid common wheat(***)(Akond et al.,2008;Chen et al.,2016).

关键词： triticum Xinjiang wheat

DIRECT SOMATIC EMBRYOGENESIS AND PLANT REGENERATION IN PROTOPLAST CULTURE OF WHEAT (triticum aestivum L. )

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Chinese Science Bulletin 1990年第17期35卷 1495-1496页

作者：郭光沁夏光敏李忠谊陈惠民 Biology Department Shandong UniversityJinan 250100 PRC

Wheat is one of the most important agronomic crops in the world. The regeneration of plants is an important prerequisite for the improvement in genetic manipulation. Protoplast culture of wheat has been proved extremely difficult and intense efforts are making for it. Recently, there have been reports on plantlets formed from wheat protoplasts. However,

关键词： triticum wheat agronomic Wheat prerequisite extremely crops manipulation regeneration regenerated