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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
07/11/2019 |
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Data da última atualização: |
07/11/2019 |
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Autoria: |
CHAIBUB, A. A.; SOUSA, T. P. de; ARAÚJO, L. G. de; FILIPPI, M. C. C. de. |
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Afiliação: |
AMANDA A. CHAIBUB, UNB; THATYANE P. DE SOUSA, UFG; LEILA GARCES DE ARAUJO, UFG; MARTA CRISTINA CORSI DE FILIPPI, CNPAF. |
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Título: |
Molecular and morphological characterization of rice phylloplane fungi and determination of the antagonistic activity against rice pathogens. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Microbiological Research, v. 231, 126353, Jan. 2020. |
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ISSN: |
0944-5013 |
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DOI: |
10.1016/j.micres.2019.126353 |
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Idioma: |
Inglês |
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Conteúdo: |
Cladosporium spp. is a cosmopolitan fungal genus. In the literature, it has been reported as a biological agent for controlling several plant diseases, but its mechanism of action has never been clarified. The present study aims to identify Cladosporium spp. based on the DNA phylogeny of nine isolates obtained from the phylloplane of rice and their potential antagonistic activity against the main fungal pathogens that affect rice crop. Nine isolates of Cladosporium spp. were identified based on DNA phylogeny, molecular and morphological characterization, and their antagonistic effects with the rice pathogens C. miyabeanus, M. oryzae, M. albescens and S. oryzae. Four isolates were selected to study lytic enzymes such as β-1,3-glucanase, chitinase and protease, and only one isolate was selected for a conidial germination and appressoria formation assay. The nine isolates were identified as C. cladosporioides, C. tenuissimum and C. subuliforme. Four isolates, identified as C. cladosporioides, inhibited the mycelial growth of rice pathogens such as C1H (68.59%) of S. oryzae, C5 G (74.32%) of C. miyabeanus, C11 G (75.97%) of M. oryzae and C24 G (77.39%) of M. albescens. C24 G showed a high activity of lytic enzymes, was tested against C. miyabeanus and M. oryzae, and inhibited conidial germination and appressorium formation by more than 59.36%. The characterization of C. cladosporioides suggested this species as a potential bioagent for the management of several rice diseases, especially rice blast. This is the first time that a potential biological agent from the genus Cladosporium identified at the species level was isolated from the rice phylloplane, and some of its mechanisms of action were demonstrated, such as increasing lytic enzyme activity against rice pathogens. MenosCladosporium spp. is a cosmopolitan fungal genus. In the literature, it has been reported as a biological agent for controlling several plant diseases, but its mechanism of action has never been clarified. The present study aims to identify Cladosporium spp. based on the DNA phylogeny of nine isolates obtained from the phylloplane of rice and their potential antagonistic activity against the main fungal pathogens that affect rice crop. Nine isolates of Cladosporium spp. were identified based on DNA phylogeny, molecular and morphological characterization, and their antagonistic effects with the rice pathogens C. miyabeanus, M. oryzae, M. albescens and S. oryzae. Four isolates were selected to study lytic enzymes such as β-1,3-glucanase, chitinase and protease, and only one isolate was selected for a conidial germination and appressoria formation assay. The nine isolates were identified as C. cladosporioides, C. tenuissimum and C. subuliforme. Four isolates, identified as C. cladosporioides, inhibited the mycelial growth of rice pathogens such as C1H (68.59%) of S. oryzae, C5 G (74.32%) of C. miyabeanus, C11 G (75.97%) of M. oryzae and C24 G (77.39%) of M. albescens. C24 G showed a high activity of lytic enzymes, was tested against C. miyabeanus and M. oryzae, and inhibited conidial germination and appressorium formation by more than 59.36%. The characterization of C. cladosporioides suggested this species as a potential bioagent for the management of several rice disease... Mostrar Tudo |
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Thesagro: |
Arroz; Doença de Planta; Fungo; Oryza Sativa; Patógeno; Taxonomia Vegetal. |
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Thesaurus NAL: |
Cladosporium; Drug antagonism; Enzyme activity; Fungi; Mycoparasites; Rice; Taxonomy. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02780naa a2200337 a 4500
001 2114015
005 2019-11-07
008 2020 bl uuuu u00u1 u #d
022 $a0944-5013
024 7 $a10.1016/j.micres.2019.126353$2DOI
100 1 $aCHAIBUB, A. A.
245 $aMolecular and morphological characterization of rice phylloplane fungi and determination of the antagonistic activity against rice pathogens.$h[electronic resource]
260 $c2020
520 $aCladosporium spp. is a cosmopolitan fungal genus. In the literature, it has been reported as a biological agent for controlling several plant diseases, but its mechanism of action has never been clarified. The present study aims to identify Cladosporium spp. based on the DNA phylogeny of nine isolates obtained from the phylloplane of rice and their potential antagonistic activity against the main fungal pathogens that affect rice crop. Nine isolates of Cladosporium spp. were identified based on DNA phylogeny, molecular and morphological characterization, and their antagonistic effects with the rice pathogens C. miyabeanus, M. oryzae, M. albescens and S. oryzae. Four isolates were selected to study lytic enzymes such as β-1,3-glucanase, chitinase and protease, and only one isolate was selected for a conidial germination and appressoria formation assay. The nine isolates were identified as C. cladosporioides, C. tenuissimum and C. subuliforme. Four isolates, identified as C. cladosporioides, inhibited the mycelial growth of rice pathogens such as C1H (68.59%) of S. oryzae, C5 G (74.32%) of C. miyabeanus, C11 G (75.97%) of M. oryzae and C24 G (77.39%) of M. albescens. C24 G showed a high activity of lytic enzymes, was tested against C. miyabeanus and M. oryzae, and inhibited conidial germination and appressorium formation by more than 59.36%. The characterization of C. cladosporioides suggested this species as a potential bioagent for the management of several rice diseases, especially rice blast. This is the first time that a potential biological agent from the genus Cladosporium identified at the species level was isolated from the rice phylloplane, and some of its mechanisms of action were demonstrated, such as increasing lytic enzyme activity against rice pathogens.
650 $aCladosporium
650 $aDrug antagonism
650 $aEnzyme activity
650 $aFungi
650 $aMycoparasites
650 $aRice
650 $aTaxonomy
650 $aArroz
650 $aDoença de Planta
650 $aFungo
650 $aOryza Sativa
650 $aPatógeno
650 $aTaxonomia Vegetal
700 1 $aSOUSA, T. P. de
700 1 $aARAÚJO, L. G. de
700 1 $aFILIPPI, M. C. C. de
773 $tMicrobiological Research$gv. 231, 126353, Jan. 2020.
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