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Partial Characterization of Chitinolytic Extract from Endophytic Streptomyces sp. and Its Effects on the Boll Weevil

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Journal of Agricultural Science and Technology 2011年第4期5卷 420-427页

作者： m. C. Quecine P. T. Lacava S. R. magro J. R. P. Parra W. L. Araujo J. L. Azevedo A. A.Pizzirani-Kleiner department of Genetics Escola Superior de Agricultura ＂Luiz de Queiroz＂ University of Sao Paulo Av. Padua Dias 11 Piracicaba 13400-970 SP Brazil Institute of Natural Sciences Federal University of Alfenas Rua Gabriel Monteiro da Silva 700 Alfenas 37130-000 MG Brazil department of Entomology and Acarology Escola Superior de Agrieultura ＂Luiz de Queiroz＂ University of Sao Paulo Av. Padua Dias 11 Piracicaba 13418-900 SP Brazil Nucleo Integrado de Biotecnologia University of Mogi das Cruzes Av. Dr. Candido Xavier de Almeida Souza 200 Mogi das Cruzes 08780-911 SP Brazil

The present study achieves the biochemistry partial characterization of the chitinolytic extract produced by an endophytic Streptomyces sp. strain （A8）. This extract was also tested against Anthonomus grandis, the cotton boll weevil aiming its control. The chitinase crude extract from the A8 strain was cultured for five days in a minimum liquid media supplemented with chitin. The extract was partially characterized by standard methods. The chitinolytic extract had an optimum temperature of 66 ＂C and an optimum pH between 4 to 9 （around 80% of relative activity）. We also characterized the temperature and pH stability and measured the effects of enzyme inhibitors. The filtered chitinolytic extract was added to an artificial boll weevil diet. Boll weevil development from the egg stage to the adult stage was prolonged, and the percentage of adults that emerged was approximately 66% less than on control diet. This study showed that *** development of A. grandis was inhibited by the presence of characterized chitinolytic extract in artificial diet. This work provides an experimental basis for using the chitinase from an endophytic bacterium Streptomyces sp. as a biocontrol alternativeto controlling the plant pest A. grandis.

关键词： Anthonomus grandis chitinase endophyte Streptomyces biocontrol.

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Forecasting the number of species of asexually reproducing fungi(Ascomycota and Basidiomycota)

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Fungal Diversity 2022年第3期114卷 463-490页

作者： Nalin N.Wijayawardene Alan J.L.Phillips Diana Santos Pereira Dong-Qin Dai AndréAptroot Josiane S.monteiro Irina S.Druzhinina Feng Cai Xinlei Fan Laura Selbmann Claudia Coleine Rafael F.Castañeda-Ruiz martin Kukwa Adam Flakus Patricia Oliveira Fiuza Paul m.Kirk Kunhiraman C.Rajesh Kumar Ilesha S.leperuma Arachchi Nakarin Suwannarach Li-Zhou Tang Teun Boekhout Chen Shuhui Tan R.P.Prabath K.Jayasinghe marco Thines Centre for Yunnan Plateau Biological Resources Protection and Utilization College of Biological Resource and Food EngineeringQujing Normal UniversityQujing 655011YunnanPeople’s Republic of China Section of Genetics Institute for Research and Development in Health and Social CareNo:393/3Lily AvenueOff Robert Gunawardane MawathaBattaramulla 10120Sri Lanka Faculdade de Ciências Biosystems and Integrative Sciences Institute(BioISI)Universidade de LisboaCampo Grande1749-016 LisbonPortugal Laboratório de Botânica/Liquenologia Instituto de BiociênciasUniversidade Federal de Mato Grosso do SulAvenida Costa e Silva S/NBairro UniversitárioCampo GrandeMS CEP 79070-900Brazil Coordination of Botany Museu Paraense Emílio GoeldiBelémPA 66077830Brazil Fungal Genomics Laboratory(FungiG) College of Resources and Environmental SciencesNanjing Agricultural UniversityWeigang 1Nanjing 210095JiangsuPeople’s Republic of China The Key Laboratory for Silviculture and Conservation of ministry of Education Beijing Forestry UniversityBeijing 100083People’s Republic of China department of Ecological and Biological Sciences University of TusciaViterboItaly Italian National Antarctic museum(mNA) Mycological SectionGenoaItaly Alejandro de Humboldt’(INIFAT) Instituto de Investigaciones Fundamentales en AgriculturaTropicalSantiago de Las VegasHavanaCuba department of Plant Taxonomy and Nature Conservation Faculty of BiologyUniversity of GdańskWita Stwosza 5980-308 GdańskPoland W.Szafer Institute of Botany Polish Academy of SciencesLubicz 4631-512 KrakowPoland Universidade Federal do Rio Grande do Norte(UFRN) Programa de Pós-Graduação em Sistemática e EvoluçãoCentro de BiociênciasCampus UniversitárioAv.Senador Salgado Filho3000Lagoa NovaNatalRN 59078-970Brazil Biodiversity Informatics and Spatial Analysis Jodrell LaboratoryRoyal Botanic GardensKewRichmond TW93DSSurreyUK National Fungal Culture Collection of India(NFCCI) Biodiversity and Palaeobiology GroupMACS Agharkar Research InstituteG.G.

Asexually reproducing fungi play a significant role in essential processes in managed and wild ecosystems such as nutrients cycling and multitrophic interactions.A large number of such taxa are among the most notorious plant and animal *** addition,they have a key role in food production,biotechnology and *** without or rare sexual reproduction are distinguished based on their sporulating structures and conidiomata in traditional morphology-based *** number,variation and diversity of asexually reproducing taxa are insufficiently known,even though fungi capable of asexual reproduction may provide an untapped,rich biological resource for future ***,ca.30,000 asexual species belonging to ca.3800 genera have been reported(including 1388 coelomycetous and 2265 hyphomycetous genera).Recent reports(2017–2020)reiterate that the number of asexually producing fungi is higher than the number of frequently sexually-reproducing *** the advent of molecular tools and the abandonment of the dual nomenclature system for pleomorphic fungi,priority criteria were established and revisited in the latest outline of fungi and fungus-like ***,species numbers and taxonomic boundaries of pleomorphic taxa and their synanamorphs or synasexual morphs have yet to be *** number of species of speciose genera(***,Aspergillus,Cercospora,Fusarium,Phoma and Pseudocercospora),cryptic species,species of pleomorphic genera,less studied life modes(such as lichenicolous taxa,taxa from extreme environments)and species from biodiversity-rich areas still need evaluation to achieve more reliable estimates of their *** paper discusses the current knowledge on the matter,with diversity estimates,and potential obstacles in several chapters on(1)speciose genera;(2)pleomorphic genera;(3)cryptic species;(4)well-studied but insufficiently resolved taxa,*** inhabiting species,marine fungi,(5)less studied life modes,e.g.

关键词： Cryptic species DNA sequences morphology Pleomorphism Speciose genera Species identificat

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One stop shop Ⅱ:taxonomic update with molecular phylogeny for important phytopathogenic genera:26–50(2019)

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Fungal Diversity 2019年第1期 41-129页

作者： Ruvishika S.Jayawardena Kevin D.Hyde Rajesh Jeewon masoomeh Ghobad-Nejhad Dhanushka N.Wanasinghe NingGuo Liu Alan J.L.Phillips Jose Ribamar COliveira-Filho Gladstone Ada silva Tatiana B.Gibertoni P.Abeywikrama L.m.Carris K.W.T.Chethana A.J.Dissanayake S.Hongsanan S.C.Jayasiri A.R.mcTaggart R.H.Perera K.Phutthacharoen K.G.Savchenko R.G.Shivas Naritsada Thongklang Wei Dong dePing Wei Nalin NWijayawardena Ji-Chuan Kang The Engineering Research Center of Southwest Biopharmaceutical Resources Ministry of EducationGuizhou UniversityGuiyang 550025People’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang RaiThailand Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China department of Health Sciences Faculty of ScienceUniversity of MauritiusReduitMauritius department of Biotechnology Iranian Research Organization for Science and Technology(IROST)P.O.Box 15815-3538Tehran 15819Iran World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Universidade de Lisboa Faculdade de CienciasBiosystems and Integrative Sciences Institute(BioISI)Campo Grande1749-016 LisbonPortugal departamento de micologia Universidade Federal de PernambucoAvenida da EngenhariaS/N-Cidade UniversitariaRecifePE 50740-600Brazil Beijing Key Laboratory of Environmet Friendly management on Fruit Disease and Pests in North China Institute of Plant and Environment ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097People’s Republic of China department of Plant Pathology Washington State UniversityPullmanWA 99164USA College of Life Science and Oceanography ShenZhen University1068Nanhai AvenueNanshanShenzhen 518055China Queensland Alliance for Agriculture and Food Innovation The University of QueenslandBrisbaneQLD 4001Australia department of Biological Sciences Butler UniversityIndianapolisIN 46208USA Centre for Crop Health University of Southern QueenslandToowoombaQLD 4350Australia department of Entomology and Plant Pathology Faculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Faculty of Agriculture National Resources and EnvironmentNaresuan UniversityPhitsanulok 65000Thailand

This paper is the second in a series focused on providing a stable platform for the taxonomy of phytopathogenic *** focuses on 25 phytopathogenic genera:Alternaria,Bipolaris,Boeremia,Botryosphaeria,Calonectria,Coniella,Corticiaceae,Curvularia,Elsinoe,Entyloma,Erythricium,Fomitiporia,Fulviformes,Laetisaria,Limonomyces,Neofabraea,Neofusicoccum,Phaeoacremonium,Phellinotus,Phyllosticta,Plenodomus,Pseudopyricularia,Tilletia,Venturia and Waitea,using recent molecular data,up to date names and the latest taxonomic *** each genus a taxonomic background,diversity aspects,species identification and classification based on molecular phylogeny and recommended genetic markers are *** this study,varieties of the genus Boeremia have been elevated to species ***,Bipolaris,Curvularia,Neofusicoccum and Phyllosticta that were included in the One Stop Shop 1 paper are provided with updated entries,as many new species have been introduced to these genera.

关键词： Boeremia DNA barcodes Endophytes Plant pathology Systematics Taxonomy

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