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Your search keyword '"Xu, Liwen"' showing total 22 results
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22 results on '"Xu, Liwen"'

3. New resources for genetic studies in maize ( Zea mays L.): a genome‐wide Maize6H‐60K single nucleotide polymorphism array and its application

Author

Lu Wang, Yawei Liu, Jianrong Ge, Yang Yang, Hongmei Yi, Fengge Wang, Jiuran Zhao, Yaming Fan, Tian Hongli, Xu Liwen, and Hang He

Subjects
Genetic Markers, 0106 biological sciences, 0301 basic medicine, Germplasm, Linkage disequilibrium, DNA, Plant, Genotyping Techniques, Single-nucleotide polymorphism, Plant Science, Biology, Polymorphism, Single Nucleotide, Zea mays, 01 natural sciences, 03 medical and health sciences, Gene Frequency, Genetics, Genome, Chloroplast, Genotyping, Oligonucleotide Array Sequence Analysis, Molecular breeding, Whole Genome Sequencing, UPGMA, Cell Biology, Minor allele frequency, 030104 developmental biology, 010606 plant biology & botany, SNP array
Abstract

Despite the availability of numerous molecular markers in maize, effective evaluation of all types of germplasm resources, accurate identification of varieties and analysis of a large number of materials in a timely, low-cost manner is challenging. Here, we present Maize6H-60K, a genome-wide single nucleotide polymorphism (SNP) array to facilitate maize genotyping. We first identified 160 million variants by sequencing data of 388 representative inbreds and then tiled 200 000 high-quality variants on a screening array. These variants were further narrowed down to 61 282 using stringent filtering criteria. Among the 60 000 markers, 21 460 SNPs (35%) were within genic regions and 12 835 (21%) were located in coding regions. To assess their effectiveness, 329 inbreds, 221 hybrids, 34 parent-offspring sets and six breeding samples were genotyped. Overall, 48 972 SNPs (80%) were categorized into the highest quality class, that of 'poly high resolution'. A total of 54 658 (89.29%) and 53 091 (86.73%) SNPs had minor allele frequency values ≥ 0.20 in inbreds and hybrids respectively. A linkage disequilibrium (LD) analysis revealed that LD decline was in equilibrium when r2 was between 0.10 and 0.15, which corresponds to a physical distance of 400-600 kb. UPGMA clustering analysis divided the 329 inbred lines into nine groups that were consistent with known pedigrees. A background analysis of breeding materials indicated that the 60 000 markers were suitable for evaluation of breeding populations constructed by materials between or within heterotic groups. The developed Maize6H-60K array should be an important tool in maize genetic studies, variety identification and molecular breeding.

Published
2020

6. QTL mapping of three ear traits using a doubled haploid population of maize

Author

Zi Shi, Xu Liwen, Fengge Wang, Jidong Wang, Jinfeng Xing, Wei Song, Duan Minxiao, Aiguo Su, Wang Yuandong, Tian Hongli, Jiuran Zhao, and Zhang Ruyang

Subjects
0106 biological sciences, 0301 basic medicine, Genetics, education.field_of_study, Population, Single-nucleotide polymorphism, Plant Science, Heritability, Biology, Quantitative trait locus, 01 natural sciences, 03 medical and health sciences, 030104 developmental biology, Gene mapping, Genetic marker, Doubled haploidy, Plant breeding, education, Agronomy and Crop Science, 010606 plant biology & botany
Published
2018

14. Construction of a multicontrol sterility system for a maize male-sterile line and hybrid seed production based on theZmMs7gene encoding a PHD-finger transcription factor

Author

Zhang, Danfeng, primary, Wu, Suowei, additional, An, Xueli, additional, Xie, Ke, additional, Dong, Zhenying, additional, Zhou, Yan, additional, Xu, Liwen, additional, Fang, Wen, additional, Liu, Shensi, additional, Liu, Shuangshuang, additional, Zhu, Taotao, additional, Li, Jinping, additional, Rao, Liqun, additional, Zhao, Jiuran, additional, and Wan, Xiangyuan, additional

Published
2017
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15. Dietary licorice root supplementation reduces diet‐induced weight gain, lipid deposition, and hepatic steatosis in ovariectomized mice without stimulating reproductive tissues and mammary gland

Author

Madak‐Erdogan, Zeynep, primary, Gong, Ping, additional, Zhao, Yiru Chen, additional, Xu, Liwen, additional, Wrobel, Kinga U., additional, Hartman, James A., additional, Wang, Michelle, additional, Cam, Anthony, additional, Iwaniec, Urszula T., additional, Turner, Russell T., additional, Twaddle, Nathan C., additional, Doerge, Daniel R., additional, Khan, Ikhlas A., additional, Katzenellenbogen, John A., additional, Katzenellenbogen, Benita S., additional, and Helferich, William G., additional

Published
2015
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18. Silole‐containing poly(silylenevinylene)s: Synthesis, characterization, aggregation‐enhanced emission, and explosive detection

Author

Zhao, Zujin, primary, Jiang, Tao, additional, Guo, Yanju, additional, Ding, Liyuan, additional, He, Bairong, additional, Chang, Zhengfeng, additional, Lam, Jacky W. Y., additional, Liu, Jianzhao, additional, Chan, Carrie Y. K., additional, Lu, Ping, additional, Xu, Liwen, additional, Qiu, Huayu, additional, and Tang, Ben Zhong, additional

Published
2012
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22. New isolate of Loma psittaca (Microsporidia: Glugeidae) infecting the stomach wall of cultured hybrid grouper (Epinephelus lanceolatus♂ × Epinephelus fuscoguttatus♀) in South China.

Author

Liu X, Xu L, Hu K, Ren S, Weng M, Yu J, Li D, and Zhang J

Subjects
Animals, Phylogeny, Stomach, Bass, Fish Diseases, Loma, Microsporidia, Microsporidiosis veterinary
Abstract

Loma psittaca, previously described as inhabiting the intestinal mucosa of an anadromous fish, Colomesus pisttacus, from the Amazon Basin, is reported as being found for the first time in a marine fish, the hybrid grouper (Epinephelus lanceolatus♂×Epinephelus fuscoguttatus♀), from Lingshui city, Hainan Province, China, expanding the geographical distribution and host range of this parasite. Numerous whitish xenomas (0.5-0.7 mm in diameter) of this new isolate of L. psittaca were found distinctly in the muscle layer of the host stomach wall. Electron microscopic observations showed a monokaryotic nucleus in all developmental stages. Round or elongated multinucleate merogonial plasmodia surrounded by numerous mitochondria were observed initially, subsequently transforming into uninucleate sporonts through multiple fissions. Sporonts, each with a large centrally positioned nucleus, further developed into sporoblasts. Each sporoblast mother cell gave rise to two uninucleate sporoblasts by binary fission. Mature spores were ellipsoidal, measuring 4.0 ± 0.3 (3.7-4.3) μm in length and 2.2 ± 0.2 (2.1-2.5) μm in width. Spores possessed a mushroom-like anchoring disk, a bipartite polarplast, isofilar polar filaments arranged in 12-14 turns in one row, and a trilaminar spore wall. The obtained partial SSU rRNA gene sequence of the new isolate was 1330 bp in length and showed 99.4% sequence similarity with an estuary isolate of L. psittaca previously reported in South America. SSU rRNA gene-based phylogenetic analyses demonstrated that the two L. psittaca isolates first clustered together and then formed a dichotomy that included the digestive-tract-infecting Loma species, L. acerinae, with high support values within group I., (© 2021 International Society of Protistologists.)

Published
2021
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