Synergistic larvicidal effect and morphological alterations induced by ethanolic extracts of Annona muricata and Piper nigrum against the dengue fever vector Aedes aegypti     

Adelia Grzybowski  Marcela Tiboni  Mário AN Silva  Rodrigo F Chitolina  Maurício Passos  José D Fontana 《Pest management science》2013,69(5):589-601

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Isolation and genetic characterization of Acidovorax avenae from red stripe infected sugarcane in Northwestern Argentina     

Paola D. Fontana  Alejandro M. Rago  Cecilia A. Fontana  Graciela M. Vignolo  Pier S. Cocconcelli  Jorge A. Mariotti 《European journal of plant pathology / European Foundation for Plant Pathology》2013,137(3):525-534

Red stripe is a bacterial disease of sugarcane causing important economic losses in Argentina that affects 30 % of the milling stems and consequently the juice quality. In this study, sugarcane leaves exhibiting red stripe symptoms were sampled in the 2008–09 growing season from 13 different sugarcane producing areas of Tucumán and Salta (northwest of Argentina). To achieve the identification and characterization of the causal agent of red stripe, bacterial isolation was performed. Species-specific PCR using Oaf1/Oar1 primers allowed the amplification of a fragment of 550 bp from approximately 50 % of the isolates; 16S rDNA sequences analysis displayed a similarity greater than 99 % with Acidovorax avenae subsp. avenae. By means of RAPD-PCR the presence of at least four different biotypes among the analyzed isolates was detected. Results of pathogenicity test allowed us to confirm A. avenae subsp. avenae as the pathogenic agent for red stripe. This study constitutes the first report on the identification and molecular characterization of this plant pathogen from the Argentina sugarcane production areas. The genetic diversity observed among A. avenae is an important factor to be considered to improve an accurate diagnosis and/or the selection of sugarcane tolerant clones.  相似文献   

Genetic networks. Small numbers of big molecules     

Fedoroff N  Fontana W 《Science (New York, N.Y.)》2002,297(5584):1129-1131

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Just give them fellowships     

Pernetta AP 《Science (New York, N.Y.)》2008,321(5897):1776-1777

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Evolutionary formation of new centromeres in macaque     

Ventura M  Antonacci F  Cardone MF  Stanyon R  D'Addabbo P  Cellamare A  Sprague LJ  Eichler EE  Archidiacono N  Rocchi M 《Science (New York, N.Y.)》2007,316(5822):243-246

A systematic fluorescence in situ hybridization comparison of macaque and human synteny organization disclosed five additional macaque evolutionary new centromeres (ENCs) for a total of nine ENCs. To understand the dynamics of ENC formation and progression, we compared the ENC of macaque chromosome 4 with the human orthologous region, at 6q24.3, that conserves the ancestral genomic organization. A 250-kilobase segment was extensively duplicated around the macaque centromere. These duplications were strictly intrachromosomal. Our results suggest that novel centromeres may trigger only local duplication activity and that the absence of genes in the seeding region may have been important in ENC maintenance and progression.  相似文献   

Assessing the potential of marine Natura 2000 sites to produce ecosystem‐wide effects in rocky reefs: A case study from Sardinia Island (Italy)     

Paolo Guidetti  Piero Addis  Fabrizio Atzori  Simona Bussotti  Antonio Cal  Alessandro Cau  Jean‐Michel Culioli  Giuseppe De Lucia  Antonio Di Franco  Manfredi Di Lorenzo  Maria Cristina Follesa  Vittorio Gazale  Giorgio Massaro  Francesco Mura  Augusto Navone  David Pala  Pier Augusto Panzalis  Antonio Pusceddu  Alberto Ruiu  Angelo Cau 《水产资源保护:海洋与淡水生态系统》2019,29(4):537-545

Pinger affects fish catch efficiency and damage to bottom gill nets related to bottlenose dolphins     

Giuseppa Buscaino  Gaspare Buffa  Gianluca Sarà  Antonio Bellante  Antonio Josè TonelloJr.  Fernando Augusto Sliva Hardt  Marta Jussara Cremer  Angelo Bonanno  Angela Cuttitta  Salvatore Mazzola 《Fisheries Science》2009,75(3):537-544

There is some evidence that the presence of Tursiops truncatus in fishing areas represents a real economic threat to fishermen due the dolphin feeding on the entangled fish, damaging the nets and reducing the fish catch. We have carried out experiments to assess the efficiency of a pinger in decreasing the interaction between the dolphins and fishing nets, in a fishing area off the coast of southern Italy, where Tursiops truncatus is frequently observed to interact with bottom gill nets. Two identical monofilament bottom gill nets (900 m long), one equipped with pingers and the other without, were used to measure the effect of these pingers on the abundance of the catch and net damage. For each haul (58 in total), data on dolphin sightings near the nets, damage judged to have been done by dolphins, weight and species composition of the catch were collected. All damage to the nets were recorded at the end of each haul. Dolphins in the fishing area were sighted 11 times out of 29 fishing activities (38%). The net equipped with pingers contained 28% more fish (biomass) than the net without pingers (t test, P < 0.04) and was less damaged (−31%, t test, P < 0.01). To assess whether the efficacy of these pingers remain constant over long period, long-term experiments should be carried out.  相似文献   

Effects of lime sulfur on Neoseiulus californicus and Phytoseiulus macropilis,two naturally occurring enemies of the two‐spotted spider mite Tetranychus urticae     

Henry E Vacacela Ajila  Eugênio E Oliveira  Felipe Lemos  Khalid Haddi  Felipe Colares  Pedro H Marques Gonalves  Madelaine Venzon  Angelo Pallini 《Pest management science》2020,76(3):996-1003

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