To discriminate goatpoxvirus (GPV) and sheeppoxvirus (SPV), the p32 genes and G-protein-coupled chemokine receptor (GpCR) genes amplified from three SPV field isolates and two GPV field isolates were sequenced and com...To discriminate goatpoxvirus (GPV) and sheeppoxvirus (SPV), the p32 genes and G-protein-coupled chemokine receptor (GpCR) genes amplified from three SPV field isolates and two GPV field isolates were sequenced and compared with the corresponding sequences deposited in GenBank. Comparison of Hinf I restriction enzyme sites of p32 genes showed that there were two sites located at 391 and 691 bp, respectively, among all the SPV strains, and one site at 688 bp among GPV strains. Cladogram generated by sequence alignment of GpCR genes showed that the SPV and GPV belonged to two different branches. These results indicate that p32. and GpCR genes can be candidates used for discrimination of GPV and SPV.展开更多
Tomato is one of the extensively consumed vegetable crops worldwide. The regular consumption of tomato decreases the incidence of chronic degenerative diseases such as certain types of cancer and cardiovascular diseas...Tomato is one of the extensively consumed vegetable crops worldwide. The regular consumption of tomato decreases the incidence of chronic degenerative diseases such as certain types of cancer and cardiovascular diseases. The objective of this study was to find an appropriate method that not only reduces tomatoes decay, but also maintains its post-harvest quality. A factorial experiment based on randomized complete block design with three replications was conducted to evaluate effects of ultraviolet（UV）-C and CaCl_2 applications on tomato during storage. The traits studied included ethylene, polygalacturonase（PG） activity, pectin methyl esterase（PME） activity, firmness, total phenol content, and fungal-induced decay were measured weekly during 35 days of storage. Both UV-C and CaCl_2 treatments had positive effects on tomato quality as compared to control treatment. The 3 and 4.5 k J m^（-2） levels of UV-C and 2% CaCl_2 had positive effects on quality characteristics, respectivly. Fruits treated by UV-C and CaCl_2 had higher phenol and firmness, and less PME activity, PG activity, ethylene production, and decay than the control fruits. In conclusion, increasing in storage duration significantly affected the fruits quality by increasing in ethylene, PME activity, PG activity, decay and decreasing the phenol content and firmness. But UV-C and CaCl_2 led to significant decrease in this adverse impact relative to control treatment.展开更多
基金supported by the grants from the Special Fund for Agricultural Biotechnology of Gansu Province (092NKDA032)National Key Technology R&D Program (2006BAD06A11 and 2006BAD06A17)
文摘To discriminate goatpoxvirus (GPV) and sheeppoxvirus (SPV), the p32 genes and G-protein-coupled chemokine receptor (GpCR) genes amplified from three SPV field isolates and two GPV field isolates were sequenced and compared with the corresponding sequences deposited in GenBank. Comparison of Hinf I restriction enzyme sites of p32 genes showed that there were two sites located at 391 and 691 bp, respectively, among all the SPV strains, and one site at 688 bp among GPV strains. Cladogram generated by sequence alignment of GpCR genes showed that the SPV and GPV belonged to two different branches. These results indicate that p32. and GpCR genes can be candidates used for discrimination of GPV and SPV.
文摘Tomato is one of the extensively consumed vegetable crops worldwide. The regular consumption of tomato decreases the incidence of chronic degenerative diseases such as certain types of cancer and cardiovascular diseases. The objective of this study was to find an appropriate method that not only reduces tomatoes decay, but also maintains its post-harvest quality. A factorial experiment based on randomized complete block design with three replications was conducted to evaluate effects of ultraviolet（UV）-C and CaCl_2 applications on tomato during storage. The traits studied included ethylene, polygalacturonase（PG） activity, pectin methyl esterase（PME） activity, firmness, total phenol content, and fungal-induced decay were measured weekly during 35 days of storage. Both UV-C and CaCl_2 treatments had positive effects on tomato quality as compared to control treatment. The 3 and 4.5 k J m^（-2） levels of UV-C and 2% CaCl_2 had positive effects on quality characteristics, respectivly. Fruits treated by UV-C and CaCl_2 had higher phenol and firmness, and less PME activity, PG activity, ethylene production, and decay than the control fruits. In conclusion, increasing in storage duration significantly affected the fruits quality by increasing in ethylene, PME activity, PG activity, decay and decreasing the phenol content and firmness. But UV-C and CaCl_2 led to significant decrease in this adverse impact relative to control treatment.
