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310篇 您的检索式:作者名="Geng Feng"
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1Sodium oligomannate therapeutically remodels gut microbiota and suppresses gut bacterial amino acids-shaped neuroinflammation to inhibit Alzheimer's disease progression显示文摘Recently,increasing evidence has suggested the association between gut dysbiosis and Alzheimer's disease(AD)progression,yet the role of gut microbiota in AD pathogenesis remains obscure.Herein,we provide a potential mechanistic link between gut microbiota dysbiosis and neuroinflammation in AD progression.Using AD mouse models,we discovered that,during AD progression,the alteration of gut microbiota composition leads to the peripheral accumulation of phenylalanine and isoleucine,which stimulates the differentiation and proliferation of pro-inflammatory T helper 1(Thl)cells.The brain-infiltrated peripheral Th1 immune cells are associated with the Ml microglia aaivation,contributing to AD-associated neuroinflammation.Importantly,the elevation of phenylalanine and isoleucine concentrations and the increase of Th1 cell frequency in the blood were also observed in two small independent cohorts of patients with mild cognitive impairment(MCI)due to AD.Furthermore,GV-971,a sodium oligomannate that has demonstrated solid and consistent cognition improvement in a phase 3 clinical trial in China,suppresses gut dysbiosis and the associated phenylalanine/isoleucine accumulation,harnesses neuroinflammation and reverses the cognition impairment.Together,our findings highlight the role of gut dysbiosis-promoted neuroinflammation in AD progression and suggest a novel strategy for AD therapy by remodelling the gut microbiota.Xinyi Wang Guangqiang Sun Teng Feng Jing Zhang Xun Huang Tao Wang Zuoquan Xie Xingkun Chu Jun Yang Huan Wang Shuaishuai Chang Yanxue Gong Lingfei Ruan Guanqun Zhang Siyuan Yan Wen Lian Chen Du Dabing Yang Qingli Zhang Feifei Lin Jia Liu Haiyan Zhang Changrong Ge Shifu Xiao Jian Ding Meiyu Geng 2019Cell Research2019,29,10:192
2Clinicopathological and prognostic analysis of 429 patients with intrahepatic cholangiocarcinoma显示文摘AIM:To understand the clinicopathological characteristics and treatment selections and improve survival and provide valuable information for patients with intrahepatic cholangiocarcinoma(ICC). METHODS:We retrospectively evaluated 5311 liver cancer patients who received resection between October 1999 and December 2003.Of these,429(8.1%)patients were diagnosed with ICC,and their clinicopathological, surgical,and survival characteristics were analyzed. RESULTS:Upper abdominal discomfort or pain(65.0%), no symptoms(12.1%),and hypodynamia(8.2%)were the major causes for medical attention.Laboratory tests showed 198(46.4%)patients were HBsAg positive, 90(21.3%)hadα-fetoprotein>20μg/L,50(11.9%) carcinoembryonic antigen>10μg/L,and 242(57.5%) carbohydrate antigen 19-9(CA19-9)>37 U/mL.Survival data was available for 329(76.7%)patients and their mean survival time was 12.4 mo.The overall survival of the patients with R0,R1 resection and punching exploration were 18.3,6.6 and 5.6 mo,respectively. Additionally,CA19-9>37 U/mL was associated with lymph node metastases,but inversely associated withcirrhosis.Multivariate analysis indicated that radical resection,lymph node metastases,macroscopic tumor thrombi and size,and CA19-9 were associated with prognosis. CONCLUSION:Surgical radical resection is still the most effective means to cure ICC.Certain laboratory tests(such as CA19-9)can effectively predict the survival of the patients with ICC.Wei-Feng Shen Wei Zhong Feng Xu Tong Kan Li Geng Feng Xie Cheng-Jun Sui Jia-Mei Yang 2009World Journal of Gastroenterology2009,15,47:39
3Anti-hepatoma activity and mechanism of ursolic acid and its derivatives isolated from Aralia decaisneana显示文摘瞄准:为了调查 ursolic (UA ) 和它的衍生物的反肿瘤活动,在肝细胞癌上从美┦木孤立 decaisneana 在试管内和在活体内。方法:在活体内细胞毒性被 3- 首先屏蔽[4,5-dimethylthiazol-2-yl ]-2, 5-diphenyltetrazolium 溴化物(MTT ) 试金。词法观察, DNA 梯子,流动血细胞计数分析,西方的污点和实时 PCR 被采用阐明 UA 的细胞毒素的机制。植入的老鼠肝细胞瘤 H22 被用来评估生长 UA 的禁止的效果在活体内。结果:UA 能显著地禁止 HepG2 和它的药抵抗的增长紧张, R-HepG2 房间,而是首先有教养的正常老鼠 hepatocytes 上的有的不禁止的效果而 UA 的所有六衍生物不能禁止所有的生长,测试房间排队。机制上的进一步的学习证明那 apoptosis 和 G0/G1 拘捕涉及多(自动数据处理核糖) 的细胞毒性和劈开聚合酶(PARP ) 。cyclooxygenase-2 (COX-2 ) 的 Downregulation 蛋白质并且在热吃惊蛋白质(HSP ) 的规定上面, 105 mRNA 相关到与 UA 对待的 HepG2 房间的 apoptosis。另外, UA 能也禁止 H22 肝细胞瘤在活体内的生长。结论:UA 是一个有希望的反肿瘤代理人,但是推进工作需要被做改进它的溶解度。Ze Tian Geng Lin Rui-Xia Zheng Feng Huang Meng-Su Yang Pei-Gen Xiao 2006World Journal of Gastroenterology2006,12,6:31
4Lipid metabolism reprogramming and its potential targets in cancer显示文摘Reprogramming of lipid metabolism is a newly recognized hallmark of malignancy.Increased lipid uptake,storage and lipogenesis occur in a variety of cancers and contribute to rapid tumor growth.Lipids constitute the basic struc-ture of membranes and also function as signaling molecules and energy sources.Sterol regulatory element-binding proteins(SREBPs),a family of membrane-bound transcription factors in the endoplasmic reticulum,play a central role in the regulation of lipid metabolism.Recent studies have revealed that SREBPs are highly up-regulated in various cancers and promote tumor growth.SREBP cleavage-activating protein is a key transporter in the trafficking and activation of SREBPs as well as a critical glucose sensor,thus linking glucose metabolism and de novo lipid synthesis.Targeting altered lipid metabolic pathways has become a promising anti-cancer strategy.This review summarizes recent progress in our understanding of lipid metabolism regulation in malignancy,and highlights potential molecu-lar targets and their inhibitors for cancer treatment.Chunming Cheng Feng Geng Xiang Cheng Deliang Guo 2018Cancer Communications2018,38,1:34
5Guidelines on multidisciplinary approaches for the prevention and management of diabetic foot disease(2020 edition)显示文摘In recent years,as living standards have continued to improve,the number of diabetes patients in China,along with the incidence of complications associated with the disease,has been increasing.Among these complications,diabetic foot disease is one of the main causes of disability and death in diabetic patients.Due to the differences in economy,culture,religion and level of medical care available across different regions,preventive and treatment methods and curative results for diabetic foot vary greatly.In multidisciplinary models built around diabetic foot,the timely assessment and diagnosis of wounds and appropriate methods of prevention and treatment with internal and external surgery are key to clinical practice for this pathology.In 2019,under the leadership of the Jiangsu Medical Association and Chinese Diabetes Society,the writing group for the Guidelines on multidisciplinary approaches for the prevention and management of diabetic foot disease(2020 edition)was established with the participation of scholars from the specialist areas of endocrinology,burn injury,vascular surgery,orthopedics,foot and ankle surgery and cardiology.Drawing lessons from diabetic foot guidelines from other countries,this guide analyses clinical practices for diabetic foot,queries the theoretical basis and grades and gives recommendations based on the characteristics of the pathology in China.This paper begins with assessments and diagnoses of diabetic foot,then describes treatments for diabetic foot in detail,and ends with protections for high-risk feet and the prevention of ulcers.This manuscript covers the disciplines of internal medicine,surgical,nursing and rehabilitation and describes a total of 50 recommendations that we hope will provide procedures and protocols for clinicians dealing with diabetic foot.Aiping Wang Guozhong Lv Xingbo Cheng Xianghua Ma Wei Wang Jianchao Gui JiHu Meng Lu Guoping Chu Jin’an Chen Hao Zhang Yiqiu Jiang Yuedong Chen Wengbo Yang Lin Jiang Houfa Geng Rendong Zheng Yihui Li Wei Feng Boey Johnson Wenjuan Wang Dalong Zhu Yin Hu 2020Burns & Trauma2020,8,1:34
626mA cm^(-2) J_(sc) from organic solar cells with a low-bandgap nonfullerene acceptor显示文摘Nonfullerene-based organic solar cells(NFOSCs)have received great interest recently due to their higher performance and greater potential compared with fullerene-based solar cells[1].Power conversion efficiencies(PCEs)over 13% have been realized in single-junction NFOSCs[2].Compared with traditional fullerene acceptors,the greatest advantage of nonfullerene acceptors is their stronger light-harvesting capability in the visible andZuo Xiao Xue Jia Dan Li Shizhe Wang Xinjian Geng Feng Liu Junwu Chen Shangfeng Yang Thomas P.Russell Liming Ding 2017Science Bulletin2017,62,22:28
7Rotor Strength Analysis of High-speed Permanent Magnet Synchronous Motors显示文摘为了对转子进行有效的冷却,在满足电机电磁性能的前提下,可通过减小保护套的厚度来尽可能增大定转子之间的气隙,因而必须对保护套和永磁体进行强度校核。将转子受力状况简化为平面应变问题,在此基础上推导出了两层过盈配合、三层过盈配合转子的应力场、应变场、位移场的解析公式,并利用有限元方法验证了解析公式的正确性。归纳了高速情况下热套式永磁转子强度设计准则,为转子的优化设计提供了理论依据。以一台额定转速120kr/min、10kW的高速永磁同步电机为例,给出了两种常用过盈配合高速电机转子的强度设计方法。CHENG Wenjie GENG Haipeng FENG Sheng YU Lie SUN Yanhua YANG Lihua 2012中国电机工程学报2012,32,27:21
8Effect of N-desulfated heparin on hepatic/renal ischemia reperfusion injury in rats显示文摘AIM: To investigate the effect of N-desulfated heparin onhepatic/renal ischemia and reperfusion injury in rats.METHODS: Using rat models of 60 minutes hepatic or renalischemia followed by 1 h,3 h,6 h and 24 h reperfusion,animalswere randomly divided into following groups,the shamoperated controls,ischemic group receiving only normalsaline,and treated group receiving N-desulfated heparin ata dose of 12 mg/kg at 5 minutes before reperfusion. P-selectin expression was detected in bepatic/renal tissueswith immunohistochemistry methodRESULTS: P-selectin expression, serum ALT, AST, BUN andCr levels were significantly increased during 60 minuteischemia and 1 h, 3 h, 6 h and 24 h reperfusion,while theincrement was significantly inhibited,and hepatic/renalpathology observed by light microscopy was remarkablyimproved by treatment with the N-desulfated heparin.Furthermore,the heparin was found no effects on PT and KPTT.CONCLUSION: P-selectin might mediate neutrophilinfiltration and contribute to hepatic/renal ischemia andreperfusion. The N-desulfated heparin might preventhepatic/renal damage induced by ischemia and reperfusioninjury without significant anticoagulant activity.Tong Zhou Wei Song Feng Wang Department of Nephrology,Ruijin Hospital,Shanghai Second Medical University,Shanghai 200025,China Jin-Lian Chen Department of Gastroenterology,Shanghai Sixth People’s Hospital,Shanghai 200233,China Ming-Jun Zhang Animal Laboratory,Ruijin Hospital,Shanghai Second Medical University,Shanghai 200025,China Pei-Hua Ni,Department of Biochemistry,Shanghai Second Medical University,Shanghai 200025 Jian-Guo Geng Institute of Biochemistry and Cell Biology,Shanghai 200030,China 2002World Journal of Gastroenterology2002,8,5:20
9MicroRNA-663 induces immune dysregulation by inhibiting TGF-β1 production in bone marrow-derived mesenchymal stem cells in patients with systemic lupus erythematosus显示文摘Mesenchymal stem cells(MSCs)are critical for immune regulation.Although several microRNAs(miRNAs)have been shown to participate in autoimmune pathogenesis by affecting lymphocyte development and function,the roles of miRNAs in MSC dysfunction in autoimmune diseases remain unclear.Here,we show that patients with systemic lupus erythematosus(SLE)display a unique miRNA signature in bone marrow-derived MSCs(BMSCs)compared with normal controls,among which miR-663 is closely associated with SLE disease activity.MiR-663 inhibits the proliferation and migration of BMSCs and impairs BMSC-mediated downregulation of follicular T helper(Tfh)cells and upregulation of regulatory T(Treg)cells by targeting transforming growth factorβ1(TGF-β1).MiR-663 overexpression weakens the therapeutic effect of BMSCs,while miR-663 inhibition improves the remission of lupus disease in MRL/lpr mice.Thus,miR-663 is a key mediator of SLE BMSC regulation and may serve as a new therapeutic target for the treatment of lupus.Linyu Geng Xiaojun Tang Kangxing Zhou Dandan Wang Shiying Wang Genhong Yao Weiwei Chen Xiang Gao Wanjun Chen Songtao Shi Nan Shen Xuebing Feng Lingyun Sun 2019Cellular & Molecular Immunology2019,16,3:16
10Binding Activity Difference of Anti-CD20 scFv-Fc Fusion Protein Derived from Variable Domain Exchange显示文摘Two novel engineered antibody fragments binding to antigen CD20 were generated by fusing a murine IgM-type anti-CD20 single-chain Fv fragment (scFv) to the human IgG1 CH2 (i.e., Cγ2) and CH3 (i.e., Cγ3) domains with the human IgG1 hinge (i.e. Hγ). Given the relationship between structure and function of protein, the 3-D structures of the two engineered antibody fragments were modeled using computer-aided homology modeling method. Furthermore, the relationship between 3-D conformation and their binding activity was evaluated theoretically. Due to the change of active pocket formed by CDRs, the HL23 (VH-Linker-VL-Hγ-Cγ2-Cγ3) remained its activity because of its preserved conformation, while the binding activity of the LH23 (VL-Linker-VH-Hγ-Cγ2-Cγ3) was impaired severely. Experimental studies by flow cytometry and fluorescence microscopy showed that HL23 possessed significantly superior binding activity to CD20-expressing target cells than LH23. That is to say, the order of variable regions could influence the binding activity of the fusion protein to CD20+ cell lines, which was in accordance with the theoretical results. The study highlights the potential relationship between the antibody binding activity and their 3-D conformation, which appears to be worthwhile in providing direction for future antibody design of recombinant antibody.Shusheng Geng Jiannan Feng Yan Li Yingxun Sun Xin Gu Ying Huang Yugang Wang Xianjiang Kang Hong Chang Beifen Shen 2006Cellular & Molecular Immunology2006,3,6:13
11Pharmacokinetic and metabolomic analyses of the neuroprotective effects of salvianolic acid A in a rat ischemic stroke model显示文摘Si-qi FENG Nan AA Jian-liang GENG Jing-qiu HUANG Run-bin SUN Chun GE Zhi-jian YANG Lian-sheng WANG Ji-ye AA Guang-ji WANG 2017Acta Pharmacologica Sinica2017,38,11:12
12Quantitative evaluation of benign meningioma and hemangiopericytoma with peritumoral brain edema by 64-slice CT perfusion imaging显示文摘背景 Hemangiopericytomas ( HPC )为本地复发和转移有一个无情的趋势,在外科为计划的两治疗和这研究的预后 appraisal.The 目的是重要的以前,在良性的 meningiomas 和 HPC 之间区分是在外科手术前地区分良性的 meningiomas 和 HPCs.Methods 在额外轴的肿瘤和 CT 灌注成像的可能的角色评估在 CT 灌注参数和 microvessel 密度( MVD )之间的关联十七REN Guang CHEN Shuang WANG Yin ZHU Rui-jiang GENG Dao-ying FENG Xiao-yuan 2010Chinese Medical Journal2010,,15:11
13OsRFPH2-10, a RING-H2 Finger E3 Ubiquitin Ligase, Is Involved in Rice Antiviral Defense in the Early Stages of Rice dwarf virus Infection显示文摘Lifang Liu Lian Jin Xiahe Huang Yongtao Geng Feng Li Qingqing Qin Rui Wang Shaoyi Ji Shanshan Zhao Qi Xie Chunhong Wei Can Xie Biao Ding Yi Li 2014Molecular Plant2014,7,6:11
14Oil filling history of the Bashituo Oilfield in the Markit Slope,SW Tarim Basin,China显示文摘The Markit Slope is an important area for the petroleum exploration in the Tarim Basin. Elucidation of the oil filling history of discovered oilfields has great significance for recognizing the accumulation processes of the whole region. Using molecular geochemistry, fluid inclusion techniques and basin modeling, we studied the oil filling process of the Bashituo Oilfield that is located in the west of the Markit Slope. The molecular migration indexes, such as the methyldibenzothiophene ratio (4-/1-MDBT), trimethylnaphthalene ratio (TMNr) and pyrrolic nitrogen compounds content, decrease from west to east, indicating that the charging direction and migration pathways are from west to east. Lithological analysis and homogenization temperatures of saline fluid inclusions accompanied with oil fluid inclusions suggest that two charging periods occurred in the Devonian oil reservoir. Combining the burial history and heating history of well BT4, Basinmod 1D software modeling shows the two oil filling periods are from 290 Ma to 285 Ma and from 10 Ma to 4 Ma, respectively, and later oil filling dominates. This study may be helpful to understand the accumulation process and provide useful references for oil and gas exploration in the Markit Slope.Cui Jingwei Wang Tieguan Li Meijun Ou Guangxi Geng Feng Hu Jian 2013Petroleum Science2013,10,1:11
15Reversible sinusoidal obstruction syndrome associated with tacrolimus following liver transplantation显示文摘Sinusoidal obstruction syndrome(SOS), previously known as hepatic veno-occlusive disease, is a rare disorder in solid organ transplant patients, and is an uncommon complication after liver transplantation. Severe SOS with hepatic failure causes considerable mortality. Tacrolimus has been reported to be an offending agent, which potentially plays a role in the pathophysiological process of SOS. SOS due to tacrolimus has been reported in lung and pancreatic transplantations, but has never been described in a liver transplant recipient. Herein, we present a case of SOS after liver transplantation, which was possibly related to tacrolimus. A 27-year-old man developed typical symptoms of SOS with painful hepatomegaly, ascites and jaundice after liver transplantation, which regressed following withdrawal of tacrolimus. By excluding other possible predisposing factors, we concluded that tacrolimus was the most likely cause of SOS.Tian Shen Xiao-Wen Feng Lei Geng Shu-Sen Zheng 2015World Journal of Gastroenterology2015,21,20:10
16Nature:研究鉴定出蛋白Nlrp9b抵抗轮状病毒感染机制显示文摘轮状病毒(rotavirus)是婴儿和儿童罹患肠胃炎和腹泻的一种最为常见的原因,每年导致全世界大约21.5万人死亡。它是高度传染性的和潜在致命性的。这种病毒特异性地感染宿主小肠中的肠上皮细胞,并且已进化出抵抗干扰素和NF-KB信号的策略来躲避免疫系统,这就提出一个问题:其他的宿主因子是否参与肠道粘膜中的抗病毒反应。不过,针对体内(特别是通过NLR炎性体)检测和限制肠道病毒的机制,人们知之甚少。Shu Zhu, Zheng Wei, Noah W. Palm, Yi Yang, Hua Yu, Hua-Bing Li, Geng Wang, Xuqiu Lei, Marcel R. de Zoete, Jun Zhao, Yunjiang Zheng, Haiwei Chen, Liang Shan, Richard A. Flavell Siyuan Ding, Ningguo Feng, Harry B. Greenberg Siyuan Ding, Harry B. Greenberg Penghua Wang, Yujiao Zhao Wen Pan, Jun Lu Jun Zhao, Yuval Kluger Kellie A. Jurado, Clara Abraham, Erol Fikrig Erol Fikrig, Richard A. Flavell 2017现代生物医学进展2017,17,27:10
17Lower Es3 in Zhanhua Sag, Jiyang Depression: a case study for lithofacies classification in lacustrine mud shale显示文摘湖相页岩油气重点关注富含Ⅰ或Ⅱ_1型有机质纹层状灰质岩相,因此,泥页岩岩相划分除了应考虑矿物组分、层理构造之外,还应特别重视有机质类型及丰度的差异。以济阳坳陷沾化凹陷沙三下亚段(Es_3~下)湖相泥页岩为例,综合利用岩心描述、薄片、电镜、核磁及测井等资料进行岩相类型划分、特征分析及识别方法研究。首先,从层理构造、岩性角度区分泥页岩岩相,并考虑将有机质信息融入到岩相分类中,提出了'构造+岩性+有机质'三重信息结合的湖相泥页岩岩相划分方案。然后,针对岩相三重信息分别进行识别研究,利用测井变量最优滤波分析获得的敏感测井数据三维交会可提高岩性识别精度,同时鉴于曲线分形对层理构造有较好的指示,将敏感无铀伽马曲线分形维数作为交会变量,优化了岩相构造识别方法。最后,通过测井反演的有机碳含量(TOC)、热解烃(S_2)地化参数,进一步可得到氢指数(HI),借助氢指数-最大热解峰温度(HI-T_(max))图版能够识别不同岩相中的有机质类型。由此综合建立的湖相泥页岩岩相测井精细分析方法,能够准确地提取泥页岩岩相中构造、岩性、有机质三种信息,为在连续井筒中识别有效页岩储层与寻找油气甜点提供了依据。Yan Jian-Ping He Xu Hu Qin-Hong Liang Qiang Tang Hong-Ming Feng Chun-Zhen Geng Bin 2018Applied Geophysics2018,15,2:10
18Research progress on the mechanism of improving peanut yield by single-seed precision sowing显示文摘The contradiction between the supply and demand of edible vegetable oil in China is prominent,and the self-sufficiency rate is less than 35%.Peanut has a very outstanding status in ensuring the security of edible oil and food.The emphasis of increasing peanut yield should be the improvement of pod yield per unit area,because the total yield of peanut has not increased as required.This is attributed to mainly two factors-low increase in the crop productivity and the competition for land for grain and cotton crops.For traditional double-seed sowing pattern,it is difficult to further increase the peanut yield due to the serious contradiction between populations and individuals and the declining population quality under high-yield conditions.Single-seed precision sowing was proven to be a new way to increase the economic coefficient(economic yield/biological yield)with the basic stability of the total biomass,which could make plants distribute evenly,reduce the competition among individuals and attain the full production potential of single plant.In order to reveal the mechanism of increasing peanut yield by single-seed precision sowing,the effects on the ontogenetic development(plant character,physiological characteristic and nutrient utilization)and population structure(population uniformity and photosynthesis,source-sink relationship and yield composition)were systematically expounded.This study reports establishment of the high-yield cultivation technology system with the key technology of single-seed precision sowing and the supporting technology of fertilizing and management.We anticipate its wider application for the improvement of peanut yield.ZHANG Jia-lei GENG Yun GUO Feng LI Xin-guo WAN Shu-bo 2020Journal of Integrative Agriculture2020,19,8:9
19In vitro assessment of the glucose-lowering effects of berberrubine-9-O-β-D-glucuronide, an active metabolite of berberrubine显示文摘Berberrubine (BRB ) 是在 vivo 比 BBR 显示出更强壮的葡萄糖阴沉的效果的 berberine (BBR ) 的主要代谢物。在另一方面, BRB 快速并且广泛地被使产生代射变化进 berberrubine-9-O -- 在在口头的管理以后的老鼠的 D-glucuronide (BRBG ) 。在这研究,我们在老鼠比较了 BRB 和 BRBG 的 pharmacokinetic 性质,并且探索了位于他们的葡萄糖阴沉的活动下面的机制。有导致 HFD 的多糖症的 C57BL/6 老鼠被管理 BRB (50 mg 吗??Na YANG Run-bin SUN Xing-long CHEN Le ZHEN Chun GE Yu-qing ZHAO Jun HE Jian-liang GENG Jia-hua GUO Xiao-yi YU Fei FEI Si-qi FENG Xuan-xuan ZHU Hong-bo WANG Feng-hua FU Ji-ye AA Guang-ji WANG 2017Acta Pharmacologica Sinica2017,38,3:9
20Postulation of Seedlings Resistance Genes to Yellow Rust in Commercial Wheat Cultivars from Yunnan Province in China显示文摘The objective of this study was to characterize yellow(stripe) rust resistance gene(s) in 52 commercial wheat cultivars from Yunnan Province in China,and to provide information for their rational deployment in field.Seedlings of wheat cultivars were inoculated with 25 differential isolates of Puccinia striiformis from foreign and home to postulate resistance genes to yellow rust,and then validated by pedigree.There were 10 probable resistance genes characterized in these cultivars,in which,Yr9 was most commonly postulated to be present in thirteen cultivars.Yr21,the second,was present in four cultivars.Yr8,the third,were present in three cultivars.Yr6,Yr17 and Yr26,the fourth,was present in two cultivars respectively.The other gene(s) such as,Yr2+YrA,Yr7 and Yr27,were only present in single cultivar(s);unknown gene(s) or gene(s) combination(s) were present in 22 cultivars.One cultivar(Yunmai 42) had no resistance gene tested in this study.Cultivars such as Yunmai 52,Mian 1971-98,Kunmai 4,and Yunmai 56 carried effective genes and can be popularized mainly;Yr9 should be planted with other Yr genes.In the meantime other effective genes should be introduced to realize gene diversity for controlling wheat yellow rust.Yunmai 42 should be reduced to avoid rust breakout.Unknown gene cultivars should be utilized and be researched deeply.LI Ming-ju FENG Jing CAo Shi-qin LIN Rui-ming CHENG Geng CHEN Wan-quan XU Shi-chang 2011Agricultural Sciences in China2011,10,11:9
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