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Characterization and evaluation of rice blast resistance of Chinese indica hybrid rice parental lines

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The Crop Journal 2017年第6期5卷 509-517页

作者： yunyu wu Ling Yu Ning Xiao Zhengyuan Dai Yuhong Li Cunhong Pan Xiaoxiang Zhang Guangqing Liu Aihong Li Lixiahe Agricultural Research Institute of Jiangsu Province Yangzhou 225009 China Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing 225009 China Jiangsu Golden Land Seed Industry Co. Ltd China

The development of resistant varieties and hybrid combinations has been the most effective and economical strategy to control blast disease caused by Magnaporthe ***, the distribution of major R genes and blast resistance characterization in hybrid rice parents has not been well investigated, resulting in their limited use in hybrid rice blast-resistance breeding. In the present study, 88 elite indica hybrid rice parental lines were evaluated with 30 isolates of M. oryzae collected from the main planting area of indica hybrid rice in China and were characterized for the presence of 11 major resistance genes using molecular markers. The pathogenicity assays showed that four types of hybrid rice parent line showed some resistance to M. oryzae. However, the proportions of highly resistant lines and the mean resistance frequency(RF) varied among the four types, with resistance in decreasing order shown by three-line restorer lines, three-line maintainer lines, two-line sterile lines, and two-line restorer lines. All 88 hybrid rice parental lines carried more than one R gene, but none carried the R genes Pi1 and Pi2. Although Pid3 and Pi9 were present only in three-line restorer lines and Pigm only in three-line maintainer lines, the remaining six R genes(Pib, Pid2, Pi5, Pia, Pi54, and Pita) were present in the four types of hybrid rice parent with significantly different distribution frequencies. The correlation between R genes and resistance reactions was investigated. The results are expected to provide useful information for rational utilization of major R genes in hybrid rice breeding programs.

关键词： Hybrid rice parental lines Magnaporthe oryzae Pi genes Resistance evaluation Molecular markers

The therapeutics and prognosis of endometrial cancer

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The Chinese-German Journal of Clinical Oncology 2007年第3期6卷 290-292页

作者： Shousong Huang Peiyan Du yunyu wu Lipai Chen Lixian Chen Department of Gynecologic Oncology Clinical Tumor Research Center and Affiliated Tumor Hospital of GuangzhouMedical College Guangzhou 510095 China

Objective: To investigate the relative factors in the prognosis of endometrial cancer. Methods: From 1991 to 1999, 125 patients with endometrial cancer were treated in our hospital. Among them, 96 cases were received operation. Their clinical and pathological data were analyzed retrospectively. Results: The overall survival rate at 5-year were 77.6%, stage I to stage IV were 85.9%, 68.8%, 53.8% and 0%, respectively. The survival rates at 5-year in histological grade 1, grade 2 and grade 3 were 100%, 77.1% and 38.1% respectively. There’s no significant difference between grade 1 and grade 2 (P > 0.05). As to grade 1 and grade 3, grade 2 and grade 3, there were significant differences (P < 0.05). The survival rate was 100% in patients with endometrium or superficial myometrial invasion and 35.3% in cases of deeper invasion (P < 0.01). Conclusion: Therapy based on operation is presently accepted as the first line management of endometrial cancer. Clinical stage, histo- logical grade, depth of myometrial invasion and lymph node metastasis are relative factors of prognosis.

关键词： endometrial cancer therapy prognosis

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生物质固化成型的微观机理

太阳能学报 2011年第2期32卷 268-271页

作者：吴云玉董玉平吴云荣高效洁净机械制造教育部重点实验室(山东大学) 济南250061 青岛农业大学艺术与传媒学院青岛266109

通过对生物质固化成型微观机理的研究,建立了生物质固化成型的微观接触几何模型,确定了压辊对原料的正压力与生物质颗粒表面斜角之间的数学关系,正压力F的大小与颗粒表面斜角a_i的余弦成正比关系。通过对固化成型分子微观机理的研究,说... 详细信息

通过对生物质固化成型微观机理的研究,建立了生物质固化成型的微观接触几何模型,确定了压辊对原料的正压力与生物质颗粒表面斜角之间的数学关系,正压力F的大小与颗粒表面斜角a_i的余弦成正比关系。通过对固化成型分子微观机理的研究,说明了固化成型燃料燃烧点低的原因。建立了生物质固化成型的能量微观机理,并从表面能角度揭示了固化成型燃料能量密度增加、燃烧值提高的机理。

关键词：生物质固化成型微观机理

基于ANSYS的生物质液压成型模具锥角优化

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农业机械学报 2009年第12期40卷 125-129页

作者：刘超董玉平吴云玉高效洁净机械制造教育部重点实验室(山东大学) 济南250061

液压成型机模具锥角是影响成型的关键参数,为降低压缩过程中的摩擦力、减少消耗的压缩能、提高成型燃料的成型密度和成型品质,运用ANSYS参数化语言,对液压成型机模具锥角进行优化分析。研究了模具锥角值与应力分布关系、模具不同锥角时... 详细信息

液压成型机模具锥角是影响成型的关键参数,为降低压缩过程中的摩擦力、减少消耗的压缩能、提高成型燃料的成型密度和成型品质,运用ANSYS参数化语言,对液压成型机模具锥角进行优化分析。研究了模具锥角值与应力分布关系、模具不同锥角时摩擦力与位移关系,得出锥角与应力分布呈二次抛物线形式。研究结果表明：模具锥角最佳取值范围为5.5°-6.0°。经试验,锥角在此范围内取值,出模后的成型燃料松弛密度增大,耐久性增加,成型密度和成型品质提高。

关键词：生物质模具锥角参数化语言优化

CRISPR-Cas9-mediated editing of the OsHPPD 30 UTR confers enhanced resistance to HPPDinhibiting herbicides in rice

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Plant Communications 2023年第5期4卷 83-85页

作者： yunyu wu Ning Xiao Yue Cai Qian Yang Ling Yu Zichun Chen Wei Shi Jianju Liu Cunhong Pan Yuhong Li Xiaoxiang Zhang Changhai Zhou Niansheng Huang Hongjuan Ji Shuhao Zhu Aihong Li Institute of Agricultural Sciences for Lixiahe Region in Jiangsu Jiangsu Key Laboratory of Crop Genomics and Molecular BreedingYangzhou 225009China

Dear Editor,Loss of yield because of competition from weeds restricts the production of rice(Oryza sativa L.)(Maeda et al.,2019).Application of chemical herbicides is currently the most effective method for controlling weeds during rice production,especially in modern simplified cultivation ***,long-term and extensive use of herbicides,such as inhibitors of the enzymes 5-enolpyruvylshikimate-3-phosphate synthase,acetolactate synthase,and acetyl-coenzyme A carboxylase,has resulted in the emergence of herbicide-resistant weed species as well as soils with high levels of herbicide residues,which limit crop ***,there is an urgent need for alternative herbicides and breeding of corresponding herbicideresistant rice varieties.

关键词： breeding resistance herbicide

“人的城镇化”影响因素与愿景设计:自一个直辖市观察

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改革 2015年第11期 132-141页

作者：李华伍芸玉重庆大学经济与工商管理学院重庆400044

利用1997-2013年重庆市经济、产业、人口转移等数据,实证检验了各影响因素对人的城镇化发展的影响。结果发现：经济发展、产业发展、科技创新、基础设施和农业现代化对人的城镇化发展均有显著影响;产业结构与就业结构的偏离、科技创新... 详细信息

利用1997-2013年重庆市经济、产业、人口转移等数据,实证检验了各影响因素对人的城镇化发展的影响。结果发现：经济发展、产业发展、科技创新、基础设施和农业现代化对人的城镇化发展均有显著影响;产业结构与就业结构的偏离、科技创新和基础设施的投入不足,使其作用尚未完全凸显。应通过优化产业结构、加强基础设施建设、增加科技创新投入、加快农业现代化进程来推进人的城镇化可持续发展。

关键词：人的城镇化新型城镇化城乡一体化

Pijx confers broad-spectrum seedling and panicle blast resistance by promoting the degradation of ATP β subunit and OsRbohC-mediated ROS burst in rice

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Molecular Plant 2023年第11期16卷 1832-1846页

作者： Ning Xiao yunyu wu Xiaoxiang Zhang Zeyun Hao Zichun Chen Zefeng Yang Yue Cai Ruyi Wang Ling Yu Zhiping Wang Yue Lu Wei Shi Cunhong Pan Yuhong Li Changhai Zhou Jianju Liu Niansheng Huang Guangqing Liu Hongjuan Ji Shuhao Zhu Shuai Fang Yuese Ning Aihong Li Institute of Agricultural Sciences for Lixiahe Region in Jiangsu Yangzhou Rice Experiment Station of the China Agricultural Research SystemJiangsu Key Laboratory of Crop Genomics and Molecular BreedingYangzhou 225009China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Key Laboratory of Plant Functional Genomics Ministry of EducationJiangsu Key Laboratory of Crop Genomics and Molecular BreedingAgricultural College of Yangzhou UniversityYangzhou 225009China

Rice blast,caused by the fungal pathogen Magnaporthe oryzae,is one of the most important diseases of *** of blast-resistance genes is the most economical,effective,and environmentally friendly way to control the ***,genetic resources with broad-spectrum resistance(BSR)that is effective throughout the rice growth period are *** this work,using a genome-wide association study,we identify a new blast-resistance gene,Pijx,which encodes a typical CC-NBS-LRR *** is derived from a wild rice species and confers BSR to *** at both the seedling and panicle *** functions of the resistant haplotypes of Pijx are confirmed by gene knockout and overexpression ***,the LRR domain in Pijx interacts with and promotes the degradation of the ATP synthase β subunit(ATPb)via the 26S proteasome *** acts as a negative regulator of Pijx-mediated panicle blast resistance,and interacts with OsRbohC to promote its ***,loss of ATPb function causes an increase in NAPDH content and ROS ***,when Pijx is introgressed into two japonica rice varieties,the introgression lines show BSR and increased yields that are approximately 51.59%and 79.31%higher compared with those of their parents in a natural blast disease *** addition,we generate PPL^(Pijx Pigm) and PPL^(Pijx Piz-t) pyramided lines and these lines also have higher BSR to panicle blast compared with Pigm-or Piz-t-containing rice ***,this study demonstrates that Pijx not only confers BSR to *** but also maintains high and stable rice yield,providing new genetic resources and molecular targets for breeding rice varieties with broad-spectrum blast resistance.

关键词： panicle blast broad-spectrum resistance Pijx ATPb ROS burst

Analysis of genetic architecture and favorable allele usage of agronomic traits in a large collection of Chinese rice accessions

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Science China(Life Sciences) 2020年第11期63卷 1688-1702页

作者： Xiuxiu Li Zhuo Chen Guomin Zhang Hongwei Lu Peng Qin Ming Qi Ying Yu Bingke Jiao Xianfeng Zhao Qiang Gao Hao Wang yunyu wu Juntao Ma Liyan Zhang Yongli Wang Lingwei Deng Shanguo Yao Zhukuang Cheng Diqiu Yu Lihuang Zhu Yongbiao Xue Chengcai Chu Aihong Li Shigui Li Chengzhi Liang State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Biotechnology Research Institute Heilongjiang Academy of Agricultural SciencesHarbin 150086China Rice Research Institute State Key Laboratory of Crop Gene Exploration and Utilization in Southwest ChinaSichuan Agricultural UniversityChengdu 611130China Lixiahe Agricultural Research Institute of Jiangsu Province Yangzhou 225009China Jiangsu Collaborative Innovation Center for Modern Crop Production Nanjing 210095China State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan UniversityKunming 650091China

Genotyping and phenotyping large natural populations provide opportunities for population genomic analysis and genome-wide association studies(GWAS). Several rice populations have been re-sequenced in the past decade;however, many major Chinese rice cultivars were not included in these studies. Here, we report large-scale genomic and phenotypic datasets for a collection mainly comprised of 1,275 rice accessions of widely planted cultivars and parental hybrid rice lines from China. The population was divided into three indica/Xian and three japonica/Geng phylogenetic subgroups that correlate strongly with their geographic or breeding origins. We acquired a total of 146 phenotypic datasets for 29 agronomic traits under multi-environments for different subpopulations. With GWAS, we identified a total of 143 significant association loci, including three newly identified candidate genes or alleles that control heading date or amylose content. Our genotypic analysis of agronomically important genes in the population revealed that many favorable alleles are underused in elite accessions, suggesting they may be used to provide improvements in future breeding efforts. Our study provides useful resources for rice genetics research and breeding.

关键词： rice Chinese cultivars whole-genome resequencing multi-environmental phenotyping genome-wide association studies favorable alleles

Pijx confers broad-spectrum seedling and panicle blast resistance by promoting the degradation of ATP b subunit and OsRbohC-mediated ROS burst in rice

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Molecular Plant 2024年第4期17卷 672-675页

(Molecular Plant 16,1832-1846,November 62023)The originally published version of this manuscript contained several small mistakes in the labels and legends of main and supplemental figures,along with a few small mistakes in the main text,that have now been ***,in Figure 6G,the label“NILGY31^(Pijx)”has been corrected to“NIL^(Pijx)”,and in the legend of Figure 6H,“PPL^(Pijx Piz-t)”and“PPL^(Pijx Pigm)”have been corrected to“NIL^(Piz-t Pijx)”and“PPL^(Pigm Pijx).”In Figure S8A。

关键词： seedling Figure panicle