scholarly journals Cama de aviário e solo não autoclavados são eficientes no controle do crescimento de Scytalidium lignicola, causador da podridão negra da mandioca

2019 ◽  
Vol 45 (2) ◽  
pp. 191-196 ◽  
Author(s):  
Cidney Barbosa Bezerra ◽  
Erika Valente de Medeiros ◽  
Cataliny Andreza Duarte Silva ◽  
Krystal de Alcantara Notaro ◽  
Andréia Mitsa Paiva Negreiros ◽  
...  

RESUMO A podridão negra da mandioca causada por Scytalidium lignicola vem se tornando uma doença importante para os estados produtores devido a grandes perdas de produção. Por isso o objetivo do presente trabalho foi avaliar o efeito de fontes e doses de matéria orgânica isolada e adicionada a solo arenoso sob a supressividade do crescimento micelial de S. lignicola CMM 1098. Foram realizados dois experimentos o primeiro foi visando avaliar o efeito dos extratos de materiais orgânico (cama de aviário, esterco caprino, bovino e húmus de minhoca) incorporados ao meio de cultura batata-dextrose-ágar (BDA) nas concentrações (10, 20, 30 e 40%) (v/v) e o segundo foi avaliar o efeito dos materiais orgânicos misturados com solo arenoso com as mesmas fontes e doses. A fonte cama de aviário foi a mais eficiente em inibir o crescimento micelial de S. lignicola a uma dose 40%, com uma inibição do crescimento micelial de 69,75% apenas quando os extratos não foram autoclavados. Cama de aviário não autoclavado nas doses igual ou superior a 30% foi eficiente na supressividade do crescimento micelial de S. lignicola CMM 1098. Solo arenoso não autoclavados adicionado à fontes e doses de matéria orgânica são altamente eficientes na supressividade do crescimento de S. linicola CMM 1098.

1991 ◽  
Vol 37 (11) ◽  
pp. 864-868 ◽  
Author(s):  
James J. Worrall ◽  
C. J. K. Wang

Soft rot of wood by Chaetomium globosum and Scytalidium lignicola was negligible in the absence of added nutrients. Independently varying the concentrations of nutrients in double Abrams' solution (which is often used for testing soft rot of wood) showed that these concentrations are higher than necessary, and in some cases supraoptimal, for soft rot as measured by weight loss. Optimal nutrient concentrations were lower in cases of low decay capacity than in cases of high decay capacity. A suitable, reduced solution contained, per litre, 1.5 g NH4NO3, 2.5 g KH2PO4, 2.0 g K2HPO4, and 1 g MgSO4∙7H2O. Best results were obtained when blocks were infiltrated with the solution. Increasing osmolality with KCl inhibited soft rot, suggesting that the solution satisfies specific nutrient requirements rather than an osmophilic requirement. P and especially N were actively mobilized into decaying blocks. As any of the nutrients were added at low levels to the external solution, decay and the influx of N increased. Key words: wood decay, soft rot, nutrients, translocation, osmophily.


2009 ◽  
Vol 35 (4) ◽  
pp. 327-328 ◽  
Author(s):  
Ilka Márcia Ribeiro de Souza Serra ◽  
Gilson Soares da Silva ◽  
Fagner Silva Nascimento ◽  
Luiz Kleber Ferreira Lima

1989 ◽  
Vol 84 (1) ◽  
pp. 135-136 ◽  
Author(s):  
Emerson Ferreira Costa ◽  
Bodo Wanke ◽  
Paulo Cezar Fialho Monteiro ◽  
Edward Porto ◽  
Nurimar C. F. Wanke ◽  
...  

2018 ◽  
Vol 7 (14) ◽  
Author(s):  
Enrico Büttner ◽  
Anna Maria Gebauer ◽  
Martin Hofrichter ◽  
Christiane Liers ◽  
Harald Kellner

Scytalidium lignicola is a ubiquitous anamorphic ascomycete and belongs to a genus that includes several phytopathogenic fungi. The strain sequenced in this study (DSM 105466) was isolated from leaves of Quercus robur.


Mycoses ◽  
2009 ◽  
Vol 31 (12) ◽  
pp. 604-612 ◽  
Author(s):  
A.R. Costa ◽  
M.C. Pires ◽  
E. Porto ◽  
C. da Silva Lacaz ◽  
Elisabeth-Maria Heins-Vaccari ◽  
...  

1999 ◽  
Vol 41 (5) ◽  
pp. 318-323 ◽  
Author(s):  
Carlos da Silva LACAZ ◽  
Amélia Dias PEREIRA ◽  
Elisabeth Maria HEINS-VACCARI ◽  
Luiz Carlos CUCÉ ◽  
Cristiane BENATTI ◽  
...  

The authors report two cases of onychomycosis in the dystrophic form, one of them involving an HIV-positive patient, provoked by Scytalidium dimidiatum, previously called Scytalidium lignicola. The subject is reviewed from the taxonomic viewpoint, considering the anamorph Hendersonula toruloidea as a synonym of Nattrassia mangiferae, and having Scytalidium dimidiatum as the major synanamorph. According to many mycologists, Scytalidium hyalinum may be a separate species or a hyaline mutant of Scytalidium dimidiatum. Scytalidium lignicola Pesante 1957 was considered to be the type-species of the genus by ELLIS (1971)13 and later to be a "conidial state" of Hendersonula toruloidea by the same author, today known as Nattrassia mangiferae. The microorganism lives only on the roots of certain plants (mainly Platanus and Pinus). It produces pycnidia and is not considered to be a pathogen, although it is considered as a possible emerging agent capable of provoking opportunistic fungal lesions. The importance of this topic as one of the most outstanding in fungal taxonomy, so likely to be modified over time, as well as its interest in the field of dermatologic mycology, are emphasized.


2017 ◽  
Vol 45 (2) ◽  
pp. 219-225 ◽  
Author(s):  
José Aldo Teixeira da Silva ◽  
Erika Valente de Medeiros ◽  
Jéssica Morais da Silva ◽  
Dyana de A. Tenório ◽  
Keila Aparecida Moreira ◽  
...  

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