Comparison of methodologies for conidia production by Alternaria alternata from citrus
Conidia production is a problem in the study of Alternaria alternata from citrus. Thus, this study aimed to compare existing methodologies for conidial production of A. alternata isolated from Ponkan tangerine (2 isolates), Cravo lemon (1 isolate), Pêra orange (2 isolates) and Murcott tangor (1 isol...
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description | Conidia production is a problem in the study of Alternaria alternata from citrus. Thus, this study aimed to compare existing methodologies for conidial production of A. alternata isolated from Ponkan tangerine (2 isolates), Cravo lemon (1 isolate), Pêra orange (2 isolates) and Murcott tangor (1 isolate). The methodologies used were conidia production with 12 and 24 hours under white fluorescent light, evaluation with 24 and 48 hours after applying fungal mycelium stress technique, cold stress followed by injury of mycelium and evaluation with 24 hours, using healthy vegetable tissue and the use of black fluorescent near ultraviolet (NUV) lamp. Satisfactory result was obtained with A. alternata isolate from Murcott tangor, with the production of 2.8 x 105 conidia mL-1, when fungal mycelium was stressed (Petri dish with 66.66% of fungi growth) and subsequently 24 h of growth. The use of white light (24 h) and black fluorescent NUV lamp also induced expressive conidia production by one isolate of Ponkan tangerine, which produced 17.2 x 105 and 10.1 x 105 conidia mL-1 and another of Murcott tangor, which produced 13.9 x 105 and 10.1 x 105 conidia mL-1, respectively. The remaining methodologies analyzed in this study were not able to induce conidia production in satisfactory quantity. The use of both mycelium stress technique and white light (24 h) and black fluorescent NUV lamp allowed the production of enough quantities of conidia to be used in vitro (detection of fungitoxic substances)and in vivo (pathogenicity test)assays, respectively. [PUBLICATION ABSTRACT] |
doi_str_mv | 10.1590/S1517-83822008000400036 |
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C. ; Alves, Eduardo ; Batista, Tereza R. S. ; Camargos, Renato B. ; Lopes, Eloísa A. G. L.</creator><creatorcontrib>Carvalho, Daniel D. C. ; Alves, Eduardo ; Batista, Tereza R. S. ; Camargos, Renato B. ; Lopes, Eloísa A. G. L.</creatorcontrib><description>Conidia production is a problem in the study of Alternaria alternata from citrus. Thus, this study aimed to compare existing methodologies for conidial production of A. alternata isolated from Ponkan tangerine (2 isolates), Cravo lemon (1 isolate), Pêra orange (2 isolates) and Murcott tangor (1 isolate). The methodologies used were conidia production with 12 and 24 hours under white fluorescent light, evaluation with 24 and 48 hours after applying fungal mycelium stress technique, cold stress followed by injury of mycelium and evaluation with 24 hours, using healthy vegetable tissue and the use of black fluorescent near ultraviolet (NUV) lamp. Satisfactory result was obtained with A. alternata isolate from Murcott tangor, with the production of 2.8 x 105 conidia mL-1, when fungal mycelium was stressed (Petri dish with 66.66% of fungi growth) and subsequently 24 h of growth. The use of white light (24 h) and black fluorescent NUV lamp also induced expressive conidia production by one isolate of Ponkan tangerine, which produced 17.2 x 105 and 10.1 x 105 conidia mL-1 and another of Murcott tangor, which produced 13.9 x 105 and 10.1 x 105 conidia mL-1, respectively. The remaining methodologies analyzed in this study were not able to induce conidia production in satisfactory quantity. The use of both mycelium stress technique and white light (24 h) and black fluorescent NUV lamp allowed the production of enough quantities of conidia to be used in vitro (detection of fungitoxic substances)and in vivo (pathogenicity test)assays, respectively. [PUBLICATION ABSTRACT]</description><identifier>ISSN: 1517-8382</identifier><identifier>ISSN: 1678-4405</identifier><identifier>EISSN: 1678-4405</identifier><identifier>DOI: 10.1590/S1517-83822008000400036</identifier><language>eng</language><publisher>São Paulo: Springer Nature B.V</publisher><subject>Alternaria alternata ; Citrus ; Citrus fruits ; Crop diseases ; MICROBIOLOGY ; Plant pathology</subject><ispartof>Brazilian journal of microbiology, 2008-12, Vol.39 (4), p.792-798</ispartof><rights>Copyright Sociedade Brasileira de Microbiologia 2008</rights><rights>This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c404t-ef47c9b537407c579a2e98a545cff94714393a36e69059f1d92bbfd75f9acd5c3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids></links><search><creatorcontrib>Carvalho, Daniel D. C.</creatorcontrib><creatorcontrib>Alves, Eduardo</creatorcontrib><creatorcontrib>Batista, Tereza R. S.</creatorcontrib><creatorcontrib>Camargos, Renato B.</creatorcontrib><creatorcontrib>Lopes, Eloísa A. G. L.</creatorcontrib><title>Comparison of methodologies for conidia production by Alternaria alternata from citrus</title><title>Brazilian journal of microbiology</title><addtitle>Braz. J. Microbiol</addtitle><description>Conidia production is a problem in the study of Alternaria alternata from citrus. Thus, this study aimed to compare existing methodologies for conidial production of A. alternata isolated from Ponkan tangerine (2 isolates), Cravo lemon (1 isolate), Pêra orange (2 isolates) and Murcott tangor (1 isolate). The methodologies used were conidia production with 12 and 24 hours under white fluorescent light, evaluation with 24 and 48 hours after applying fungal mycelium stress technique, cold stress followed by injury of mycelium and evaluation with 24 hours, using healthy vegetable tissue and the use of black fluorescent near ultraviolet (NUV) lamp. Satisfactory result was obtained with A. alternata isolate from Murcott tangor, with the production of 2.8 x 105 conidia mL-1, when fungal mycelium was stressed (Petri dish with 66.66% of fungi growth) and subsequently 24 h of growth. The use of white light (24 h) and black fluorescent NUV lamp also induced expressive conidia production by one isolate of Ponkan tangerine, which produced 17.2 x 105 and 10.1 x 105 conidia mL-1 and another of Murcott tangor, which produced 13.9 x 105 and 10.1 x 105 conidia mL-1, respectively. The remaining methodologies analyzed in this study were not able to induce conidia production in satisfactory quantity. The use of both mycelium stress technique and white light (24 h) and black fluorescent NUV lamp allowed the production of enough quantities of conidia to be used in vitro (detection of fungitoxic substances)and in vivo (pathogenicity test)assays, respectively. 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The methodologies used were conidia production with 12 and 24 hours under white fluorescent light, evaluation with 24 and 48 hours after applying fungal mycelium stress technique, cold stress followed by injury of mycelium and evaluation with 24 hours, using healthy vegetable tissue and the use of black fluorescent near ultraviolet (NUV) lamp. Satisfactory result was obtained with A. alternata isolate from Murcott tangor, with the production of 2.8 x 105 conidia mL-1, when fungal mycelium was stressed (Petri dish with 66.66% of fungi growth) and subsequently 24 h of growth. The use of white light (24 h) and black fluorescent NUV lamp also induced expressive conidia production by one isolate of Ponkan tangerine, which produced 17.2 x 105 and 10.1 x 105 conidia mL-1 and another of Murcott tangor, which produced 13.9 x 105 and 10.1 x 105 conidia mL-1, respectively. The remaining methodologies analyzed in this study were not able to induce conidia production in satisfactory quantity. The use of both mycelium stress technique and white light (24 h) and black fluorescent NUV lamp allowed the production of enough quantities of conidia to be used in vitro (detection of fungitoxic substances)and in vivo (pathogenicity test)assays, respectively. [PUBLICATION ABSTRACT]</abstract><cop>São Paulo</cop><pub>Springer Nature B.V</pub><doi>10.1590/S1517-83822008000400036</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Alternaria alternata Citrus Citrus fruits Crop diseases MICROBIOLOGY Plant pathology |
title | Comparison of methodologies for conidia production by Alternaria alternata from citrus |
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