Fungos e nematóides fitopatogênicos associados ao cultivo de flores tropicais em São Luís - MA

Sardinha, Diogo Herison Silva; Rodrigues, Antônia Alice Costa; Diniz, Nathália Bandeira; Lemos, Raimunda Nonata Santos de; Silva, Gilson Soares da

doi:10.1590/s0100-54052012000200010

Cited by 17 publications

(14 citation statements)

References 3 publications

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“…Outros estudos (Lins e Coelho, 2004;Pozza et al, 1999;Sardinha et al, 2012;Sologuren e Juliatti, 2007) relataram que o número de patógenos encontrados em folhas é bem maior que em outra parte da planta (Warumby et al, 2004), de H. bihai, H. latispata, H. rostrata, H. rauliniana (Sardinha et al, 2012 e de H. psittacorum cv. 'Golden Torch' e 'Alan Carle' (Cerqueira et al, 2013;Sardinha et al, 2012).…”

Section: Resultsunclassified

“…cubense ocorreu nos rizomas (Tabela 3). A ocorrência de fungos fitopatogênicos causando danos em helicônias, com exceção da Drechslera sp., foi constatado em outros trabalhos (Assis et al, 2002;Coutinho, 2006;Freire e Mosca, 2009;Lins e Coelho, 2004;López-Vásquez et al, 2013 ;Madriz et al1991;Moraes et al, 2006;Sardinha et al, 2012 ;Serra e Coelho, 2007;Sologuren e Juliatti, 2007;Warumby et al, 2004). Na região Sul da Bahia há registro de Curvularia lunata, e espécies de Pestalotiopsis: P. mangifolia, P. matildae, P. neglecta, P. palmarum e P. pauciseta associados à helicônias (Cerqueira et al, 2013).…”

Section: Resultsunclassified

“…) (Assis et al, 2002;Barguil et al, 2009;Barguil et al, 2011;Cerqueira et al, 2013;Coutinho, 2006;Freire e Mosca, 2009;Liberato et al, 2008;Lins e Coelho, 2004;López-Vásquez et al, 2013;Santana et al, 2009;Santos et al, 2009;Sardinha et al, 2012;Serra e Coelho, 2007).…”

Section: Introductionunclassified

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FITOPATÓGENOS ASSOCIADOS ÀS DOENÇAS DE Heliconia spp., EM CULTIVOS COMERCIAIS NO LITORAL SUL DA BAHIA

Sobrinho¹,

Bezerra²,

Silveira³

et al. 2015

Agrotropica

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O principal objetivo deste trabalho foi identificar fitopatógenos associados às helicônias na região Litoral Sul do estado da Bahia. Foram realizadas coletas mensais de raízes, folhas, flores e inflorescências de helicônias, no período de agosto/2006 a junho/2007, em plantios comerciais de flores tropicais nos seguintes municípios: Camamu, Ibirapitanga, Ilhéus, Itabuna, Ituberá, Uruçuca e Valença. As amostras por planta eram compostas por cinco hastes vegetativas, duas hastes reprodutivas e raízes; o material coletado era identificado e acondicionado em sacos plásticos e transportados para laboratório. A ocorrência ou não de doenças foi considerada por meio dos sintomas e/ou sinais em folhas (lesões foliares), pseudocaule (coloração e exsudatos), rizomas e raízes (coloração, podridão seca ou aquosa), sendo comparados com registros de outros estudos. Verificou-se que a maioria das doenças de origem fúngica identificada neste estudo ocorreu em folhas (73,46%), seguida pela ocorrência nas brácteas das inflorescências (22,37%) e em rizomas (4,17%). Foram encontrados uma espécie de alga (Cephaleuros virescens) e nove gêneros de fungos fitopatogênicos: Bipolaris sp., Cladosporium sp., Drechslera sp., Mycosphaerella sp., Pestalotiopsis sp. (folhas); Colletotrichum gloeosporioides e Curvularia sp. (folhas e inflorescências), e Fusarium oxysporum f. sp. cubense (rizomas). A antracnose foi a doença de maior incidência e distribuição na região. Palavras-chave:Flores tropicais, Fungos, Antracnose.Phytopathogens associated with diseases of Heliconia spp., in commercial crops on the South Coast of Bahia. This study aimed survey were identified the major plant pathogens in heliconia production in Southen Bahia, Brazil. Heliconia root, leaf, flower and inflorescence samples were collected monthly from August/2006 to June/2007, in commercial tropical flower crops in the municipalities: Camamu, Ibirapitanga, Ilhéus, Itabuna, Ituberá, Uruçuca e Valença. Each plant sample contained five vegetative stocks, two reproductive stocks and roots which were placed in labeled plastic bags and taken to the laboratory. Presence or absence of disease was noted by signs and/or symptoms on leaves (leaf spots), pseudostem (coloration and exudates), rhizomes and roots (coloration, dry or soft rot) in comparison to previous disease reports. Most fungal diseases identified in this study were found on leaves (73.46%) followed by inflorescence bracts (22.37%) and on roots (4.17%). A total of nine fungal plant pathogens and one species of algae (Cephaleuros virescens) were noted on heliconia plants sampled. Foliar fungal pathogens were identified as: Bipolaris sp., Cladosporium sp., Drechslera sp., Mycosphaerella sp., Pestalotiopsis sp. On leaves and inflorescences: Colletotrichum gloeosporioides and Curvularia sp. were noted and on rhizomes only Fusarium oxysporum f. sp. cubense occurred. Antracnose was the disease with the highest incidence and distribution in the region.

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Section: Resultsunclassified

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FITOPATÓGENOS ASSOCIADOS ÀS DOENÇAS DE Heliconia spp., EM CULTIVOS COMERCIAIS NO LITORAL SUL DA BAHIA

Sobrinho¹,

Bezerra²,

Silveira³

et al. 2015

Agrotropica

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“…The conditions of tropical ornamental plant cultivation, climate and planting density favor disease occurrence. Diseases reduce production and affect flower quality; becoming a bottleneck for quality tropical flower production, because they cause both direct damage, when they infect the inflorescences causing dark spots, and indirect damage, by reducing the photosynthesis area of the plant when they colonise the leaves (Sardinha et al, 2012). Sardinha et al (2012), surveyed disease occurrence in tropical flowers on São Luís Island and reported the presence of 16 disease causal agents, especially fungal and nematoid diseases.…”

Section: Author(s) Agree That This Article Remain Permanently Open Acmentioning

confidence: 99%

The use of plant extracts in anthracnose control in species of Helconia (Heliconia psittacorum cv. Golden Torch and Heliconia rostrata)

Gusmao¹,

Rodrigues²,

Melo³

et al. 2018

Afr. J. Agric. Res.

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The objective of the present study was to assess the anti-fungal activity of medicinal plant extracts on inhibition of Colletotrichum gloesporioides mycelial growth, sporulation and germination and on anthracnose control in Heliconia psitacorum cv. Golden Torch and Heliconia rostrata. Extracts of garlic, lemon grass, cinnamon, lemon balm, eucalyptus, ginger, mint, bitter melon and black pepper were used. The, mycelial were assessed in vitro by measuring their growth in Petri dishes. Sporulation was assessed by counting spores in a Neubauer chamber. Germination was observed based on germination tube emission. In the in vitro tests, the inflorescences were treated with the plant extracts and inoculated with the pathogen 24 h later. The results showed that all the extracts presented anti-fungal activity, in greater or lesser intensity, compared to the control. The garlic extract resulted in the highest mycelial growth inhibition rate. Regarding sporulation, the bitter melon, ginger, mint, popcorn eucalyptus and bitter melon extracts were more efficacious, interfering in spore formation; while the ginger extract most reduced spore germination inhibiting germination tube emission. For the in vivo tests, it was observed that all the plant extracts tested were efficient in reducing lesion severity in the inflorescence, showing that the use of plant extracts may be a promising alternative for managing the diseases that affect helconia post-harvest.

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“…In addition, the fungus Colletotrichum gloeosporioides causes anthracnosis in fruits such as avocado (Persea americana), tomato (Solanum lycopersicum) and papaya (Carica papaya) [6], [7] and Curvularia lunata causes foliar spots in several important tropical food crops, including corn and rice (Oryza sativa) [8], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

In vitro antagonism of Trichoderma asperellum against Colletotrichum gloeosporioides, Curvularia lunata, and Fusarium oxysporum

Ramírez-Olier¹,

Trujillo-Salazar²,

Osorio-Echeverri³

et al. 2019

revuin

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The objective of this study was to evaluate the antagonistic effects of two native isolates of Trichoderma asperellum (GRB-HA1 and GRB-HA2) against the phytopathogenic fungi Colletotrichum gloeosporioides, Curvularia lunata, and Fusarium oxysporum, with the aim of developing biological control agents to replace the use of chemical fungicides. An antagonism assay was performed under in vitro conditions using the dual culture method, and the percentage inhibition of radial growth (PIRG) and the degree of mycoparasitism (grade 0-4) were evaluated after 10 days of culture. Results show that both isolates resulted in 100% PIRG and grade 4 mycoparasitism in dual cultures against Colletotrichum gloeosporioides and Curvularia lunata although GRB-HA1 led to 70% PIRG and grade 3 mycoparasitism and GRB-HA2 led to 84% PIRG and grade four mycoparasitism against F. oxysporum. Thus, these native T. asperellum isolates show potential for the biological control of diseases caused by phytophathogenic fungi.

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Fungos e nematóides fitopatogênicos associados ao cultivo de flores tropicais em São Luís - MA

Cited by 17 publications

References 3 publications

FITOPATÓGENOS ASSOCIADOS ÀS DOENÇAS DE Heliconia spp., EM CULTIVOS COMERCIAIS NO LITORAL SUL DA BAHIA

FITOPATÓGENOS ASSOCIADOS ÀS DOENÇAS DE Heliconia spp., EM CULTIVOS COMERCIAIS NO LITORAL SUL DA BAHIA

The use of plant extracts in anthracnose control in species of Helconia (Heliconia psittacorum cv. Golden Torch and Heliconia rostrata)

In vitro antagonism of Trichoderma asperellum against Colletotrichum gloeosporioides, Curvularia lunata, and Fusarium oxysporum

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