| Registro completo |
| Provedor de dados: |
Trop. Plant Pathol.
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| País: |
Brazil
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| Título: |
Hentriacontane: a leaf hydrocarbon from Syzygium jambos with stimulatory effects on the germination of urediniospores of Puccinia psidii
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| Autores: |
TESSMANN,DAURI J.
DIANESE,JOSÉ C.
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| Data: |
2002-09-01
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| Ano: |
2002
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| Palavras-chave: |
Germination
Myrtaceae
Rust
Urediniospores
Fungal spore germination
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| Resumo: |
A crude Sohxlet extract from leaves of Syzygium jambos was sequentially fractionated using a silica gel flash column. A bioassay based on the numbers of urediniospores of Puccinia psidii that germinated in 2% water agar detected an active stimulant of germination when the fraction eluted with 100% n-hexane was used. The active fraction induced up to 88% increase in germination when added to a spore suspension in mineral oil. The active fraction was characterized as a hydrocarbon by ¹H nuclear magnetic resonance, 13C nuclear magnetic resonance, and infrared analysis. Gas chromatography-mass spectrometry analysis indicated that the fraction was a long-chain 436 MW hydrocarbon with corresponding to C31H64, namely hentriacontane. This is the first time such a compound proved to be involved with stimulation of fungal spore germination. These results may contribute to better understanding the infection process of rusts.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582002000500017
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| Editor: |
Sociedade Brasileira de Fitopatologia
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| Relação: |
10.1590/S0100-41582002000500017
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| Formato: |
text/html
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| Fonte: |
Fitopatologia Brasileira v.27 n.5 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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