目的研究胃癌组织中有丝分裂关卡基因BUB1和BUBR1的表达。方法采用半定量RT-PCR技术检测39例胃癌组织及正常胃组织中BUB1及BUBR1基因的表达。结果胃癌组织中BUB1mRNA/β-actin mRNA和BUBR1mRNA/β-actin mRNA拷贝数比值均明显高于正常...目的研究胃癌组织中有丝分裂关卡基因BUB1和BUBR1的表达。方法采用半定量RT-PCR技术检测39例胃癌组织及正常胃组织中BUB1及BUBR1基因的表达。结果胃癌组织中BUB1mRNA/β-actin mRNA和BUBR1mRNA/β-actin mRNA拷贝数比值均明显高于正常胃组织(1.84±0.43 vs. 0.86±0.44和2.00±1.36 vs. 0.96±0.60)(P<0.05)。结论 BUB1基因和BUBR1基因在胃癌中高表达可能与癌细胞的异常增殖有关。展开更多
Fungal pathogen of asparagus stem blight was isolated. No significant genetic difference was detected among the three strains with 492 bp long ITS1-5.8S-ITS2 sequence. It was then identified through colony growth, con...Fungal pathogen of asparagus stem blight was isolated. No significant genetic difference was detected among the three strains with 492 bp long ITS1-5.8S-ITS2 sequence. It was then identified through colony growth, conidia morphology, and molecular characterization. The physiological response to oxidation and osmosis stress, and virulence to Asparagus officinalis L. were analyzed. The results showed that the pathogen causing asparagus stem blight for A. officinalis L. in Jiangxi Province is Phomopsis asparagri (Sacc.) Bubák. Under pure culture conditions, the conidia were oval-shaped (α-type), with colorless single spore and single nucleus, containing 0-2 oil balls. Its vegetative growth rate was higher when cultured on 0.2 × potato dextrose agar (0.2 × PDA) medium than that on oatmeal agar (OA) medium. However, the pycnidia appeared earlier on OA medium than on 0.2 earlier PDA medium. The vegetative growth rate was depressed under oxidation (H2O2) or osmosis (NaCl) stress conditions, and totally inhibited under 7 mmol/L H2O2 or 2.4 mol/L NaCl. All the strains caused typical pathogenic symptoms to Asparagus officinalis L. at 7 days-post-inoculation (dpi) with conidia.展开更多
文摘目的研究胃癌组织中有丝分裂关卡基因BUB1和BUBR1的表达。方法采用半定量RT-PCR技术检测39例胃癌组织及正常胃组织中BUB1及BUBR1基因的表达。结果胃癌组织中BUB1mRNA/β-actin mRNA和BUBR1mRNA/β-actin mRNA拷贝数比值均明显高于正常胃组织(1.84±0.43 vs. 0.86±0.44和2.00±1.36 vs. 0.96±0.60)(P<0.05)。结论 BUB1基因和BUBR1基因在胃癌中高表达可能与癌细胞的异常增殖有关。
文摘Fungal pathogen of asparagus stem blight was isolated. No significant genetic difference was detected among the three strains with 492 bp long ITS1-5.8S-ITS2 sequence. It was then identified through colony growth, conidia morphology, and molecular characterization. The physiological response to oxidation and osmosis stress, and virulence to Asparagus officinalis L. were analyzed. The results showed that the pathogen causing asparagus stem blight for A. officinalis L. in Jiangxi Province is Phomopsis asparagri (Sacc.) Bubák. Under pure culture conditions, the conidia were oval-shaped (α-type), with colorless single spore and single nucleus, containing 0-2 oil balls. Its vegetative growth rate was higher when cultured on 0.2 × potato dextrose agar (0.2 × PDA) medium than that on oatmeal agar (OA) medium. However, the pycnidia appeared earlier on OA medium than on 0.2 earlier PDA medium. The vegetative growth rate was depressed under oxidation (H2O2) or osmosis (NaCl) stress conditions, and totally inhibited under 7 mmol/L H2O2 or 2.4 mol/L NaCl. All the strains caused typical pathogenic symptoms to Asparagus officinalis L. at 7 days-post-inoculation (dpi) with conidia.
