【摘 要】
：
Insects possess specific immune responses to protect themselves from different types of pathogens.Activation of immune cascades can inflict significant developm
【机 构】
：
State Key Laboratory of Crop Stress Biology for Arid Areas,and Key Laboratory of Integrated Pest Man
论文部分内容阅读
Insects possess specific immune responses to protect themselves from different types of pathogens.Activation of immune cascades can inflict significant developmental costs on the surviving host.To characterize infection kinetics in a surviving host that expe-riences baculovirus inoculation,it is crucial to determine the timing of immune responses.Here,we investigated time-dependent immune responses and developmental costs elicited by inoculations from each of two wild-type baculoviruses,Autographa californica mul-tiple nucleopolyhedrovirus(AcMNPV)and Helicoverpa zea single nucleopolyhedrovirus(HzSNPV),in their common host H.zea.As H.zea is a semi-permissive host of AcMNPV and fully permissive to HzSNPV,we hypothesized there are differential immune responses and fitness costs associated with resisting infection by each virus species.Newly molted 4th-instar larvae that were inoculated with a low dose(LD15)of either virus showed signif-icantly higher hemolymph FAD-glucose dehydrogenase(GLD)activities compared to the corresponding control larvae.Hemolymph phenoloxidase(PO)activity,protein concentra-tion and total hemocyte numbers were not increased,but instead were lower than in control larvae at some time points post-inoculation.Larvae that survived either virus inoculation exhibited reduced pupal weight;survivors inoculated with AcMNPV grew slower than the control larvae,while survivors of HzSNPV pupated earlier than control larvae.Our results highlight the complexity of immune responses and fitness costs associated with combating different baculoviruses.
其他文献
【摘要】目的：分析过敏性鼻炎发病的危险因素与护理干预措施。方法：选取2018年3月至2019年10月我院收治的过敏性鼻炎患者70例为观察组，同期体检健康患者70例为对照组，分析发病后各种危险因素，并提出有效护理措施。结果：对过敏性鼻炎主要影响因素为：饮茶、父母过敏史、食物过敏、父亲吸烟、尘螨IgE阳性，均为过敏性鼻炎危险因素，差异有统计学意义（P0.05。 1.2方法 患者入院之后统一进行体检、
【摘要】目的：探讨小切口阑尾切除术治疗急性阑尾炎的临床疗效。方法：采用随机数字表法将我院2018年1月至2019年1月收治的400例急性阑尾炎患者分为两组，每组各200例。观察组采用小切口阑尾切除术治疗，对照组采用常规阑尾切除术治疗，比较两组临床指标、满意度及并发症。结果：观察组术中出血量、下床活动时间、排气时间、切口长度、住院时间及手术时间均比对照组低，差异有统计学意义（P<0.05）；观察组治
Bacteria are ubiquitous inhabitants of animals.Hormaphidinae is a particular aphid group exhibiting very diverse life history traits.However,the microbiota in t
Rice stripe virus(RSV)is the causative agent of rice stripe disease and is completely dependent on insect vectors for its plant-to-plant transmission.Laodelphax
Even though Paranosema locustae is widely used in China as a biological agent for controlling grasshoppers,the mortality rate is initially quite low.This study
Dear Editor,rnAs the coenzyme of multiple carboxylases,biotin plays key roles in intermediary metabolism and animal nutri-tion(Listed,1990;Douglas,2017).Therefo
【摘要】目的：探讨宫颈腺样囊性癌（ACC）的临床病理特征、免疫表型及可能的发生机制。方法：对1例宫颈腺样囊性癌的临床、病理组织学及免疫表型进行观察并复习过往国内文献，以了解国内人群宫颈腺样囊性癌临床病理特征。结果：本例宫颈腺样囊性癌及过往国内文献中11例宫颈腺样囊性癌患者平均年龄为60.8岁，多为老年女性（9/12），就诊时主诉多为阴道流血或流液（11/12），肿瘤类型多为外生性肿物（10/12）
This study examines the rate of female answers to conspecific versus heterospe-cific male vibratory calls in three,closely related stonefly species:Zwicknia bif
Interactions between plants and insects are among the most important life func-tions for all organism at a particular natural community.Usually a large number o
【摘要】目的：本文主要探究胆结石患者接受全面护理模式后的护理有效率；患者满意度和手术时间、以及住院时间指标的临床效果。方法：将院内156例胆结石患者分成参照组和研究组，参照组73例、研究组83例，研究组的护理手段是在参照组的基础上更加完善全面护理模式，而参照组的护理手段则是给予胆结石患者常规护理。对两组胆结石患者的护理有效率；患者满意度和手术时间、以及住院时间指标的临床效果进行对比观察。结果：给予