Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides

In this study, five new recently described <i>Monosporascus</i> species, <i>M</i>. <i>brasiliensis</i>, <i>M</i>. <i>caatinguensis</i>, <i>M</i>. <i>mossoroensis</i>, <i>M</i>. <i>nordestinus</i&...

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Main Authors: Allinny Luzia Alves Cavalcante, Andréia Mitsa Paiva Negreiros, Moisés Bento Tavares, Érica dos Santos Barreto, Josep Armengol, Rui Sales Júnior
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Journal of Fungi
Subjects:
Online Access:https://www.mdpi.com/2309-608X/6/3/169
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author Allinny Luzia Alves Cavalcante
Andréia Mitsa Paiva Negreiros
Moisés Bento Tavares
Érica dos Santos Barreto
Josep Armengol
Rui Sales Júnior
author_facet Allinny Luzia Alves Cavalcante
Andréia Mitsa Paiva Negreiros
Moisés Bento Tavares
Érica dos Santos Barreto
Josep Armengol
Rui Sales Júnior
author_sort Allinny Luzia Alves Cavalcante
collection DOAJ
description In this study, five new recently described <i>Monosporascus</i> species, <i>M</i>. <i>brasiliensis</i>, <i>M</i>. <i>caatinguensis</i>, <i>M</i>. <i>mossoroensis</i>, <i>M</i>. <i>nordestinus</i>, and <i>M</i>. <i>semiaridus,</i> which were found on weeds collected from cucurbit cultivation fields in northeastern Brazil, are characterized regarding mycelial growth at different pH levels and salinity (NaCl) concentrations, their pathogenicity to selected cucurbit species, and their sensitivity to fungicides with different modes of action. Our results reveal great variability among the representative isolates of each <i>Monosporascus</i> spp. All of them showed a wide range of tolerance to different pH levels, and NaCl significantly reduced their in vitro mycelial growth, although no concentration was able to inhibit them completely. In pathogenicity tests, all seedlings of cucurbits evaluated, melon, watermelon, cucumber, and pumpkin, were susceptible to the five <i>Monosporascus</i> spp. in greenhouse experiments using artificial inoculation of roots. Moreover, all <i>Monosporascus</i> spp. were highly susceptible to the fungicides fludioxonil and fluazinam. Our findings provide relevant information about the response of these new <i>Monosporascus</i> spp. to environmental factors, plant genotypes and fungicides.
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spelling doaj.art-551b06eecd5147b6b1b5002942e6f7302023-11-20T13:09:54ZengMDPI AGJournal of Fungi2309-608X2020-09-016316910.3390/jof6030169Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to FungicidesAllinny Luzia Alves Cavalcante0Andréia Mitsa Paiva Negreiros1Moisés Bento Tavares2Érica dos Santos Barreto3Josep Armengol4Rui Sales Júnior5Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró RN 59625-900, BrazilDepartamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró RN 59625-900, BrazilDepartamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró RN 59625-900, BrazilDepartamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró RN 59625-900, BrazilInstituto Agroforestal Mediterráneo, Universitat Politècnica de València, Camino de Vera S/N, 46022 Valencia, SpainDepartamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró RN 59625-900, BrazilIn this study, five new recently described <i>Monosporascus</i> species, <i>M</i>. <i>brasiliensis</i>, <i>M</i>. <i>caatinguensis</i>, <i>M</i>. <i>mossoroensis</i>, <i>M</i>. <i>nordestinus</i>, and <i>M</i>. <i>semiaridus,</i> which were found on weeds collected from cucurbit cultivation fields in northeastern Brazil, are characterized regarding mycelial growth at different pH levels and salinity (NaCl) concentrations, their pathogenicity to selected cucurbit species, and their sensitivity to fungicides with different modes of action. Our results reveal great variability among the representative isolates of each <i>Monosporascus</i> spp. All of them showed a wide range of tolerance to different pH levels, and NaCl significantly reduced their in vitro mycelial growth, although no concentration was able to inhibit them completely. In pathogenicity tests, all seedlings of cucurbits evaluated, melon, watermelon, cucumber, and pumpkin, were susceptible to the five <i>Monosporascus</i> spp. in greenhouse experiments using artificial inoculation of roots. Moreover, all <i>Monosporascus</i> spp. were highly susceptible to the fungicides fludioxonil and fluazinam. Our findings provide relevant information about the response of these new <i>Monosporascus</i> spp. to environmental factors, plant genotypes and fungicides.https://www.mdpi.com/2309-608X/6/3/169fungicidesmycelial growthpathogenicitypHsalinitysoilborne fungi
spellingShingle Allinny Luzia Alves Cavalcante
Andréia Mitsa Paiva Negreiros
Moisés Bento Tavares
Érica dos Santos Barreto
Josep Armengol
Rui Sales Júnior
Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
Journal of Fungi
fungicides
mycelial growth
pathogenicity
pH
salinity
soilborne fungi
title Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
title_full Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
title_fullStr Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
title_full_unstemmed Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
title_short Characterization of Five New <i>Monosporascus</i> Species: Adaptation to Environmental Factors, Pathogenicity to Cucurbits and Sensitivity to Fungicides
title_sort characterization of five new i monosporascus i species adaptation to environmental factors pathogenicity to cucurbits and sensitivity to fungicides
topic fungicides
mycelial growth
pathogenicity
pH
salinity
soilborne fungi
url https://www.mdpi.com/2309-608X/6/3/169
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