新疆策勒县蔬菜大棚专用蔬菜品种筛选试验

引进5个番茄品种,进行了秋延后栽培试验,结果显示秋延后日光温室番茄品质好,深受广大消费者的欢迎。     

Fossa ovalis tear causing right to left shunting in a Cavalier King Charles Spaniel

Left atrial tear is an infrequent sequela of severe mitral regurgitation due to myxomatous mitral valve degeneration. Interatrial septal tear due to mitral regurgitation causing a left-to-right shunt is uncommon. Right to left shunting secondary to acute interatrial septal tear is very rarely reported in the human literature, and has not been reported in the veterinary literature in a dog. This case describes the clinical, radiographic, echocardiographic, gross pathologic, and histopathologic features of a dog presented in acute respiratory distress secondary to acute onset right to left shunting through the interatrial septum. This was later documented to be due to a tear in the septum secondary to tricuspid regurgitation and pulmonary hypertension. The presence of an acquired right to left shunting atrial septal defect is of clinical and prognostic significance, and should be considered in cases of acute respiratory distress.     

虚拟团队在大学产生与发展的缘由及其管理模式探析

在信息时代和新技术革命的推动下，虚拟团队在大学由浅尝辄止到推广运用，并以其敏捷、灵活、不囿于地域局限的独特优势，大有取代传统学科组织模式之势。设立合适的虚拟团队目标，营造诚信的团队合作氛围，是构建高效虚拟团队的关键所在。     

Molecular adaptations of glucose and lipid metabolism to different levels of dietary carbohydrates in juvenile Japanese flounder Paralichthys olivaceus

Japanese flounder juveniles (initial body weight: 7.12 ± 0.02 g) were fed three diets containing 0, 120 and 200 g/kg of carbohydrates (C0, C120 and C200, respectively) for 10 weeks. Results showed that higher dietary carbohydrate intake enabled further deposition of glycogen and lipids in liver and muscle. The mRNA levels of glucokinase (gck), phosphofructokinase (pfkl) and hexokinase (HK) activity involved in glycolysis were significantly up‐regulated in C120 (p < .05) but showed no further up‐regulation except for gck in C200. Besides, the gluconeogenic phosphoenolpyruvate carboxykinase 1 (pck1) mRNA levels were down‐regulated significantly in fish fed the C120 (p < .05). However, further increase in dietary carbohydrate levels increased the mRNA levels and activities of enzymes involved in gluconeogenesis and lipolysis (p < .05). Additionally, plasma glucose remained unchanged in C120 (p > .05) but significantly increased in C200 group (p < .05). In conclusion, Japanese flounder was able to use carbohydrates efficiently through regulation of glucose and lipid metabolism when dietary carbohydrate was not higher than 120 g/kg, while 200 g/kg of dietary carbohydrate caused the deregulation of glucose homoeostasis.     

Influences of dietary antimicrobial peptide APSH‐07 on the growth performance,immune response and vibriosis resistance of abalone Haliotis discus hannai Ino

A 115‐day feeding trial and subsequently a 10‐day challenge test with Vibrio parahaemolyticus were conducted to investigate the effects of dietary antimicrobial peptide APSH‐07 on growth performance, immune response, antioxidative status and vibriosis resistance of abalone Haliotis discus hannai (initial body weight: 2.06 ± 0.01 g; initial shell length: 25.42 ± 0.18 mm). Four artificial diets were designed with 0 (artificial diet control), 7.5, 15.0 and 22.5 mg/kg of APSH‐07, respectively. The brown alga Laminaria japonica was used as the live food control. Results showed that the specific growth rates of abalone in the groups with 7.5 and 15.0 mg/kg dietary APSH‐07 were significantly higher than those in the controls (p < .05). The total haemocyte counts and respiratory burst activity in haemolymph of abalone in the group with 7.5 mg/kg of dietary APSH‐07 were significantly higher than those in the groups with 0 and 22.5 mg/kg of dietary APSH‐07 (p < .05). The gene expression levels of Mn‐superoxide dismutase and thioredoxin peroxidase 2, and the activities of glutathione peroxidase in the group with 7.5 mg/kg of dietary APSH‐07 were significantly higher than those in the other groups (p < .05). Cumulative mortality of abalone after the challenge test was significantly decreased in the group with 7.5 mg/kg of dietary APSH‐07 supplementation. Supplementation of 22.5 mg/kg dietary APSH‐07 significantly increased the cumulative mortality. In conclusion, 7.5 mg/kg of dietary APSH‐07 supplementation had the better growth performance, higher antioxidation, immune and disease resistance capacity of abalone. Excessive supplementation of dietary antimicrobial peptide APSH‐07 (22.5 mg/kg) had significantly negative effects. Further studies are needed to determine the optimal level of dietary APSH‐07 supplementation for abalone.     

泰万菌素对猪繁殖与呼吸综合征的防控效果试验

为检验泰万菌素对猪繁殖与呼吸综合征(PRRS)的防控效果,用2种泰万菌素制品(A、B)和黄芪多糖饲喂妊娠母猪,通过统计临床生产指标、母猪和仔猪抗体水平、病毒检出率以及细胞因子IL-2、IFN-γ表达水平等,综合评价泰万菌素的PRRS防控效果.结果显示:泰万菌素的PRRS防控效果明显优于黄芪多糖,其中泰万菌素A、B组母猪...     

Complete mitochondrial genome sequence of Brassica oxyrrhina and comparative analysis of the region containing orf108, a male sterility gene for mustard (Brassica juncea), among B. oxyrrhina,Diplotaxis erucoides and Sinapis species

To date, several cytoplasms of wild species have been introduced to Brassica juncea, for inducing cytoplasmic male sterility (CMS). One of the causal genes of CMS is orf108, which is widely distributed in Brassicaceae including Brassica oxyrrhina. To further understand the origin of orf108, we assembled the complete mitochondrial genome sequence of B. oxyrrhina. We also determined the DNA sequences upstream of atp1 including orf108 for D. erucoides and five Sinapis species. The orf108 was definitively placed in the mitochondrial genome of B. oxyrrhina consisting of 247,936 bp. In S. alba, previously reported to possess orf108, the gene was not present, whereas Sinapis arvensis and Sinapis turgida contained orf108. The orf108 sequence in the two Sinapis species showed a novel nucleotide substitution compared to D. erucoides. Northern hybridization suggested, furthermore, that orf108 mRNA was processed in the two species similarly to that in B. oxyrrhina. The results clarified the interspecific differentiation of orf108‐apt1 region in Sinapis.     

橡胶林钾素研究进展

综述国内外橡胶林钾素相关研究,指出在橡胶林生态系统中,钾的来源途径主要包括土壤、降水、枯枝落叶归还和人工施肥等,输出途径主要为采胶、采种、淋溶损失和水土流失,针对当前胶林系统内钾素养分失衡的现状,对橡胶林钾素循环进行系统动态模拟研究,实现养分循环理论研究与指导施肥的有机结合仍是今后研究的重点。     

山东菏泽地区草地贪夜蛾发生为害情况

在2019和2020年调查了菏泽地区草地贪夜蛾的发生和为害情况。通过形态学和分子生物学方法鉴定明确了菏泽地区的草地贪夜蛾物种。利用灯诱和性诱监测成虫、田间调查监测幼虫,连续2年的数据表明,草地贪夜蛾在8月中旬左右迁飞至菏泽地区,选择低于大喇叭口期的玉米上产卵为害;成虫监测方面,性诱效果显著高于灯诱。上述结果表明,草地贪夜蛾成功入侵山东菏泽地区,虽然害虫种群密度和发生为害面积小,但有扩张的趋势,后续应在山东菏泽地区继续加强对草地贪夜蛾的监测预警。     

母血脐血红细胞锌铜含量的测定

采用原子吸收分光光度法测定126对正常产妇及其新生儿红细胞锌、铜含量。结果表明:母血红细胞锌高于脐血,而红细胞铜低于脐血,差异显著;母婴间红细胞锌、铜均呈显著正相关;新生儿红细胞锌、铜含量与母亲血清锌钢浓度无直线相关。认为红细胞锌、铜在母婴间锌、铜代谢中具有重要作用,其含量稳定,更能准确反映体内的锌、铜状态。