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| 1 | Identification of genes associated with cotyledon senescence in upland cotton显示文摘In order to unravel the biochemical pathways and understand the molecular mechanisms involved in leaf senescence, suppression subtractive hybridization (SSH) was used to generate a cDNA library enriched for transcripts differentially expressed in developmental senescence cotyledons of upland cotton. After differential screening by membrane- based hybridization and subsequent confirmation by reverse Northern blot analysis, selected 678 clones were sequenced and analyzed. Sequencing of these cDNA fragments reveals that 216 of expressed se- quence tags (ESTs) represented unique genes. Of these 216 cDNAs, 151 clones (69.9%) show signifi- cant homologies to previously known genes, while the remaining 65 do not match any known sequences. 151 unique ESTs are assigned to twelve different categories based on their putative functions gener- ated by BLAST analysis. These SAG-encoded pro- teins are likely to participate in macromolecule deg- radation, nutrient recycling, detoxification of oxidative metabolites, and signaling and regulatory events. The expression pattern of selection of genes was confirmed using northern hybridization. Northern hybridization confirmed several distinct patterns, from expression at a very early stage to the terminal phase of the senescence syndrome. Clones encod- ing proteases and proteins involved in macromole- cule degradation and gluconeogenesis, as well as stress-related genes, are up regulated in senescence cotyledons. | SHEN Fafu YU Shuxun XlE Qingen HAN Xiulan FAN Shuli | 2006 | Chinese Science Bulletin2006，51，9： | 4 |
| 2 | Ferredoxin:Thioredoxin Reductase Is Required for Proper Chloroplast Development and Is Involved in the Regulation of Plastid Gene Expression in Arabidopsis thaliana显示文摘 | Peng Wang Jun Liu Bing Liu, Qingen Da, Dongru Feng, Jianbin Su, Yang Zhang, Jinfa Wang Hong-Bin Wang | 2014 | Molecular Plant2014，7，10： | 2 |
| 3 | Mapping QTLs for yield and nitrogen-related traits in wheat: influence of nitrogen and phosphorus fertilization on QTL expression显示文摘 | Yunfeng Xu Ruifang Wang Yiping Tong Huatian Zhao Qingen Xie Dongcheng Liu Aimin Zhang Bin Li Hongxing Xu Diaoguo An | 2014 | Theoretical and Applied Genetics2014，，1： | 1 |
| 4 | Study on the application of parent-of-originpecificDNA methylation markers to forensic genetics 显示文摘 | ZHAO GUISEN YANG QINGEN | 2005 | Forensic Science International2005，154，23： | 1 |
| 5 | Effects of UHMWPE viscoelasticity on the squeeze-film lubrication of hip replacements显示文摘Many studies have been performed to analyse the lubrication of artificial joints since the pioneer work by the late Professor Duncan Dowson.However,the viscoelastic defor-mation of one of the most widely used bearing materials,ultra-high-molecular-weight polyethylene(UHMWPE),has only been considered recently.The described study attempted to investigate the effect of UHMWPE viscoelasticity on the elastohydrody-namic lubrication of such a soft artificial hip replacement under squeeze-film motion.A transient viscoelastic squeeze-film lubrication model of a typical hip implant was developed and solved to obtain the film thickness and pressure distributions.A boundary film thickness was adopted to consider the direct and indirect lubricant contact condi-tions.The results showed that the viscoelasticity had marked effects on the squeeze-film lubrication performance of UHMWPE artificial hip joints.The minimum film thickness in the viscoelastic model was smaller than that of the elastic model,causing an earlier direct contact.However,the film thickness within the central contact region in the viscoelastic model was greater than that of the elastic model due to the restricted flow of the lubricant,therefore enhancing the lubricating effect and particularly with a short relaxation time and mechanical loss factor. | Xianjiu Lu Qingen Meng Zhongmin Jin | 2021 | Biosurface and Biotribology2021，7，2： | 0 |
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