检索结果-南通市图书馆

Unveiling a new regulator: Vacuolar V-ATPase mediates brassinosteroid signaling in Arabidopsis

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2024年第2期17卷 227-229页

作者： Shikha Malik Justin W.Walley department of Plant Pathology Entomologyand Microbiologylowa State UniversityAmesIA 50011USA

Plant growth and development are intricately regulated by hormones such as auxins,gibberellins,jamonates,cytokinins,and brassinosteroids(BRs).BRs are a group of plant steroid hormones that play a vital role in plant growth and response to the *** regulate many biological processes including cell elongation,cell division,and male fertility,as well as abiotic and biotic stress responses.

关键词： media fertility brassinosteroid

Feeding behavior and hormoligosis associated with imidacloprid resistance in Asian citrus psyllid,Diaphorina citri

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2024年第4期31卷 1211-1221页

作者： Xue Dong Chen Justin George Lauren M.Diepenbrock Hunter Gossett Guoping Liu Jawwad A.Qureshi Lukasz L.Stelinski entomology and Nematology department University of FloridaCitrus Research and Education CenterLake AlfredFloridaUSA Southern Insect Management Research Unit USDA-ARSStonevilleMississippiUSA entomology and Nematology department University of FloridaSouthwest Florida Research and Education CenterImmokaleeFloridaUSA

Imidacloprid is a neonicotinoid insecticide used for managing the Asian citrus psyllid,Diaphorina citri Kuwayama,which serves as vector of phytopathogens causing citrus ***,development of resistance to neonicotinoids among populations of *** has coincided with occasional control failures in the *** objectives of this research were to(1)survey current levels of imidacloprid resistance in Florida citrus;(2)compare feeding behavior between imidacloprid-resistant and susceptible *** using electrical penetration graph recordings,and(3)investigate the possible amplification of insecticide hormoligosis associated with *** surveys confirmed that the susceptibility of *** populations to imidacloprid has decreased in commercial Florida citrus groves compared with a laboratory-susceptible *** 12 generations of selection,resistance to imidacloprid increased by 438 fold compared with the susceptible ***-susceptible *** feeding on citrus exhibited significantly more bouts associated with intercellular pathway(C),phloem penetration(D),phloem salivation(E1),and nonprobing(Np)activities than imidacloprid-resistant ***,there were no differences observed in the frequency or duration of phloem ingestion or xylem feeding between susceptible and resistant *** was no statistical difference in fecundity between resistant and susceptible ***,the fecundity of imidacloprid-susceptible female *** treated with a sublethal concentration of imidacloprid(LC_(25))increased significantly compared with controls,while such hormoligosis was less pronounced among imidacloprid-resistant *** results suggest that imidacloprid-resistant psyllids may cease feeding sooner than susceptible counterparts following sublethal exposure to this insecticide,indicative of a behavioral resistance mechanism.

关键词： artificial selection electrical penetration graph feeding behavior hormoligosis insecticide resistance sublethal exposure

Wildfire severity alters soil microbial exoenzyme production and fungal abundances in the southern Appalachian Mountains

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2024年第5期34卷 865-878页

作者： Megan L.SCHILL Richard BAIRD Shawn P.BROWN Allison M.VEACH department of Integrative Biology University of Texas at San Antonio Biochemistry Molecular Biology Entomology and Plant Pathology Department Mississippi State University department of Biological Sciences The University of Memphis

Climate change has increased drought frequency and duration that are exacerbated by increased temperatures globally. This effect has, and will continue,to increase fire occurrence across many regions of North America. In the southern Appalachian Mountains, wildfires with high burn severity occurred in 2016due to increased drought and human activity. To investigate the effects of burn severity on soil physicochemical properties, microbial extracellular enzyme production, and microbial abundances in a temperate region, surface soils (0–15 cm) were collected from two sites (the Great Smoky Mountains National Park in Tennessee and the Nantahala National Forest in North Carolina, USA) spanning lightly, moderately, and severely burned areas, accompanied by adjacent unburned locations that act as controls. The soil samples were collected at three time points between 2017 and 2019 (i.e., 0.5, 1, and 2.5 years post-fire)among burn severity plots. Total hydrolytic enzyme production varied over time, with severe burn plots having significantly lower enzyme production at 2.5years post-fire. Individual enzymes varied among burn severities and across time post-fire. Light burn plots showed greater carbon-specific (β-glucosidase and β-xylosidase) and phosphorus-specific (acid phosphatase) enzyme activities at 0.5 years post-fire, but this effect was transient. At 2.5 years post-fire, theβ-xylosidase and acid phosphatase activities were lower in severe or moderate burn plots relative to the controls. In contrast, the activity of nitrogen-specific enzyme leucyl aminopeptidase was the lowest in severe burn plots at 0.5 years post-fire, but was the lowest in light burn plots at 2.5 years post-fire. The fungi:bacteria ratio declined with burn severity, indicating that fungi are sensitive or less resilient to high burn severity during recovery. These results suggest that wildfires alter trajectories for soil microbial structure and function within a 2.5-year timeframe, which potentially

关键词： 16S rRNA burn severity extracellular enzyme fungi:bacteria ratio internal transcribed spacer microbial structure

Survival effects of antibiotic exposure during the larval and adult stages in the West Nile virus vector Culex pipiens

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2024年第2期31卷 542-550页

作者： Marta Garrigos Mario Garrido Manuel Morales-Yuste JosuéMartinez-de la Puente Jesus Veiga Faculty of Pharmacy Department of ParasitologyUniversity of GranadaGranadaSpain CIBER de Epidemiologia y Salud Publica(CIBERESP) MadridSpain

The ability of mosquitoes to transmit a pathogen is affected,among other factors,by their survival rate,which is partly modulated by their *** microbiota is acquired during the larval phase and modified during their development and adult feeding behavior,being highly dependent on environmental *** residues including antibiotics are widespread pollutants potentially being present in mosquito breeding waters likely affecting their ***,we used Culex pipiens mosquitoes to assess the impact of antibiotic exposure during the larval and adult stages on the survival rate of adult ***-collected larvae were randomly assigned to two treatments:larvae maintained in water supplemented with antibiotics and control *** adults were subsequently assigned to each of two treatments,fed with sugar solution with antibiotics and fed only with sugar solution(controls).Larval exposure to antibiotics significantly increased the survival rate of adult females that received a control *** addition,the effect of adult exposure to antibiotics on the survival rate of both male and female mosquitoes depended on the number of days that larvae fed ad libitum in the laboratory before *** particular,shorter larval ad libitum feeding periods reduced the survival rate of antibiotic-treated adult mosquitoes compared with those that emerged after a longer larval feeding *** differences were not found in control adult *** results extend the current understanding of the impact of antibiotic exposure of mosquitoes on a key component of vectorial capacity,that is the vector survival rate.

关键词： antibiotics avian malaria microbiota mosquitoes vector competence vector survival

Effect of organic mineral supplementation in reducing oxidative stress in Holstein calves during short‑term heat stress and recovery conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2024年第2期15卷 812-825页

作者： A-Rang Son Seon-Ho Kim Mahfuzul Islam Michelle Miguel Ye Pyae Naing Sang-Suk Lee Ruminant Nutrition and Anaerobe Laboratory Department of Animal Science and TechnologySunchon National UniversitySuncheon 57922Korea department of Microbiology and parasitology Sher-e-Bangla Agricultural UniversityDhaka 1207Bangladesh

Background This study investigated the effects of inorganic and organic minerals on physiological responses,oxidative stress reduction,and rumen microbiota in Holstein bull calves(123.81±9.76 kg;5 months old)during short-term heat stress(HS)and recovery *** Holstein calves were randomly assigned to four treatment groups:no mineral supplementation(Con),inorganic minerals(IM),organic minerals(OM),and high-concentration organic minerals(HOM)and two thermal environments(HS and recovery)using 4×2 factorial arrangement in a crossover design of four periods of 35 *** were maintained in a temperature-controlled *** experimental period consisted of 14 d of HS,14 d of recovery condititon,and a 7-d washing *** Body temperature and respiration rate were higher in HS than in the recovery conditions(P0.05).The principal coordinate analysis represented that the overall rumen microbiota was not influenced by mineral supplementation;however,temperature-induced microbial structure shifts were indicated(PERMANOVA:P<0.05).At the phylum level,Firmicutes and Actinobacteria decreased,whereas Fibrobacteres,Spirochaetes,and Tenericutes increased(P<0.05),under HS *** genus Treponema increased under HS conditions,while Christensenella was higher in recovery conditions(P<0.05).Conc

关键词： Antioxidant status Heat stress Holstein bull calves Organic mineral supplementation Oxidative stress

The new kid on the block in insect pest management:sprayable RNAi goes commercial

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第8期67卷 1766-1768页

作者： Junjie Yan Ralf Nauen Stuart Reitz Andrei Alyokhin Jiang Zhang David Mota-Sanchez Yonggyun Kim Subba Reddy Palli Silvia I.Rondon Brian A.Nault Juan Luis Jurat-Fuentes Michael S.Crossley William E.Snyder Angharad M.R.Gatehouse Myron P.Zalucki Bruce E.Tabashnik Yulin Gao State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Bayer AG Crop Science DivisionR&DPest ControlMonheim 40789Germany department of Crop and Soil Science Oregon State UniversityOntario 97914USA School of Biology and Ecology University of MaineOrono 04469USA Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China department of entomology Michigan State UniversityEast Lansing 48864USA department of Plant Medicals Andong National UniversityAndong 36729Republic of Korea department of entomology University of KentuckyLexington 40503USA Oregon State University Oregon Integrated Pest Management CenterCorvallis 97838USA department of entomology Cornell UniversityCornell AgriTechGeneva 14456USA department of entomology and Plant Pathology University of TennesseeKnoxville 37996USA department of entomology and Wildlife Ecology University of DelawareNewark 19716USA department of entomology University of GeorgiaAthensGeorgia 30602USA School of Natural and Environmental Sciences Newcastle UniversityNewcastle upon TyneNE17RUUK School of the Environment University of QueenslandBrisbane 4072Australia Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management College of Plant Health and MedicineQingdao Agricultural UniversityQingdao 266109China department of entomology University of ArizonaTucson 85721USA National Center of Excellence for Tuber and Root Crop Research Chinese Academy of Agricultural SciencesBeijing 100081China

Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns exacerbate this *** urgently need safe and effective crop protection tools to sustainably generate yields that meet ever-increasing global demand.

关键词： crops damage pest

Clinical and molecular features of human cystic echinococcosis in Tehran,Iran,2011-2019

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2022年第12期15卷 558-567页

作者： Narges Amani Hamedani Majid Pirestani Abdolhossein Dalimi parasitology&entomology department Faculty of Medical SciencesTarbiat Modares UniversityTehranIran

Objective:To evaluate the clinical and molecular features of human cystic echinococcosis in Tehran,***:In this cross-sectional study,all human cystic echinococcosis patients admitted to Tehran’s hospitals from 2011 to 2019 were enrolled,and demographic characteristics,clinical findings,and laboratory data were ***,paraffin-embedded and fresh tissue samples of 175 cystic echinococcosis patients were evaluated for molecular *** samples’isolated DNA was used to amplify cytochrome c oxidaseⅠand NADH dehydrogenase subunitⅠ***,the morphological features of fresh samples were ***:In total,175 patients with a mean age of 45(9-98)years were admitted to Tehran’s hospitals diagnosed with cystic ***,the highest(26.9%)and the lowest(2.9%)prevalence of cystic echinococcosis cases were in the 16-30 and 1-15 years range,***/female ratio was 0.96(49.1%vs.50.9%).The liver was affected in 92 patients(52.6%),and two or more organs were infected in 7 patients(4.0%).The cysts’diameter varied from 1 to 25 cm,and 96.0%of the patients had a single hydatid *** patients underwent radical surgery and the PAIR technique was applied for all *** significant difference was observed between the protoscolex hooks of pulmonary and hepatic cysts.G1-G3 had the highest percentage(99.4%)over other identified G6 genotypes(0.6%).Conclusions:The sheep-dog cycle plays an important role in transmitting the human cystic echinococcosis infection in Tehran.

关键词： Human cystic echinococcosis Clinical features Genotype Tehran

Nitrogen availability mediates the effects of roots and mycorrhizal fungi on soil organic carbon decomposition:A meta-analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2024年第2期34卷 289-296页

作者： Tongshuo BAI Yunpeng QIU Shuijin HU Ecosystem Ecology Laboratory College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China department of entomology&Plant Pathology North Carolina State UniversityRaleigh NC 27695USA

Plant roots and their associated mycorrhizal fungi critically mediate the decomposition of soil organic carbon(C),but the general patterns of their impacts over a broad geographical range and the primary mediating factors remain *** on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or mycorrhizal fungi increased organic C decomposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil C:N ratio)critically mitigated this promotion *** addition,the positive effects of living roots and/or mycorrhizal fungi on organic C decomposition were higher under herbaceous and leguminous plants than under woody and non-leguminous plants,***,there was no significant difference between arbuscular mycorrhizal fungi and ectomycorrhizal fungi in their effects on organic C ***,roots and/or mycorrhizal fungi significantly enhanced the decomposition of leaf litter but not root *** findings advance our understanding of how roots and their symbiotic fungi modulate soil C dynamics in the rhizosphere or mycorrhizosphere and may help improve predictions of soil global C balance under a changing climate.

关键词： arbuscular mycorrhizal fungi ectomycorrhizal fungi leaf litter leguminous plant mycorhizosphere rhizosphere root litter soil C:N ratio

The temporal-spatial expression and functional analysis of three gustatory receptor genes in Solenopsis invicta using sweet and bitter compounds

在线全文

学校读者我要写书评

暂无评论

Insect Science 2024年第2期31卷 448-468页

作者： Muhammad Irfan Waris Yanyuan Lei Guojun Qi Ziying Guan Abdul Rashied Jie Chen Lihua Lyu Institute of Plant Protection Guangdong Academy of Agricultural SciencesGuangdong Provincial Key Laboratory of High Technology for Plant ProtectionGuangzhouChina department of entomology College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina

The insect gustatory system participates in identifying potential food sources and avoiding toxic *** this process,gustatory receptors(GRs)recognize feeding stimulant and deterrent ***,the GRs involved in recognizing stimulant and deterrent compounds in the red imported fire ant,Solenopsis invicta,remain ***,we conducted a study on the genes SinvGR1,SinvGR32b,and SinvGR28a to investigate the roles of GRs in detecting feeding stimulant and deterrent *** this current study,we found that sucrose and fructose are feeding stimulants and the bitter compound quinine is a feeding *** fire ant workers showed significant behavior changes to avoid the bitter taste in feeding stimulant *** transcription quantitative real-time polymerase chain reaction results from developmental stages showed that the SinvGR1,SinvGR32b,and SinvGR28a genes were highly expressed in fire ant ***-specific expression profiles indicated that SinvGR1,SinvGR32b,and SinvGR28a were specifically expressed in the antennae and foreleg tarsi of workers,whereas SinvGR32b gene transcripts were also highly accumulated in the male ***,the silencing of SinvGRI or SinvGR32b alone and the co-silencing of both genes disrupted worker stimulation and feeding on sucrose and *** results also showed that SinvGR28a is required for avoiding quinine,as workers with knockdown of the SinvGR28a gene failed to avoid and fed on *** study first identified stimulant and deterrent compounds of fire ant workers and then the GRs involved in the taste recognition of these *** study could provide potential target gustatory genes for the control of the fire ant.

关键词： behavioral responses feeding assays gustatory receptors RNA interference Solenopsis invicta temporal-spatial expression