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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
10/01/2010 |
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Data da última atualização: |
30/07/2013 |
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Autoria: |
KNIGHTS, J. K.; DAVEY, M. R.; LUCAS, J. A. |
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Afiliação: |
Department of Botany, The University of Nottingham, University Park, Nottingham. |
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Título: |
The ultrastructure of dormant, germinating, and photo-inhibited uredospores of the rust fungus Puccinia graminis f. sp. tritici. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Protoplasma, New York, v. 113, n. 1, p. 57-62, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
A comparison was made of fixed and non-fixed uredospores of the wheat stem rust fungus Puccinia graminis f. sp. tritici, using thin sectioning and freeze-etching. The latter technique yielded new information on the ultrastructure of dormant, germinating, and photo-inhibited uredospores, although the distribution of intra-membranous particles (IMPs) was similar in each case. A stereological analysis of thin sectioned specimens provided quantitative data on organelle volumetric densities complementing the qualitative information. Evidence suggests that light acts by preventing the dissolution of wall material in the germ pore regions. Methyl cis-ferulate, the uredospore self-inhibitor, is also believed to act at this stage in the germination process, and possible links between photo-inhibition and self-inhibition are discussed. |
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Thesagro: |
Doença; Ferrugem; Fungo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01371naa a2200181 a 4500
001 1835161
005 2013-07-30
008 1982 bl --- 0-- u #d
100 1 $aKNIGHTS, J. K.
245 $aThe ultrastructure of dormant, germinating, and photo-inhibited uredospores of the rust fungus Puccinia graminis f. sp. tritici.
260 $c1982
520 $aA comparison was made of fixed and non-fixed uredospores of the wheat stem rust fungus Puccinia graminis f. sp. tritici, using thin sectioning and freeze-etching. The latter technique yielded new information on the ultrastructure of dormant, germinating, and photo-inhibited uredospores, although the distribution of intra-membranous particles (IMPs) was similar in each case. A stereological analysis of thin sectioned specimens provided quantitative data on organelle volumetric densities complementing the qualitative information. Evidence suggests that light acts by preventing the dissolution of wall material in the germ pore regions. Methyl cis-ferulate, the uredospore self-inhibitor, is also believed to act at this stage in the germination process, and possible links between photo-inhibition and self-inhibition are discussed.
650 $aDoença
650 $aFerrugem
650 $aFungo
700 1 $aDAVEY, M. R.
700 1 $aLUCAS, J. A.
773 $tProtoplasma, New York$gv. 113, n. 1, p. 57-62, 1982.
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| 1. |  | MULLINS, J. G. L.; PARKER, J. E.; COOLS, H. J.; TOGAWA, R. C.; LUCAS, J. A.; FRAAIJE, B. A.; KELLY, D. E.; KELLY, S. L. Molecular modelling of the emergence of azole resistance in Mycosphaerella graminicola. Plos One, v. 6, n. 6, e20973, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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