摘要:

AbstractOne compound isolated from the stem wood ofPinus densifloraSieb. Zucc. is responsible for its resistance toFomes annosus(Fr.) Cke. From thin layer chromatography and microanalytical evidence, the inhibitory compound is nitrogenous and may be an alkaloid.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00037.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractThe effect of SO2on the SH‐groups of proteins in needles ofPicea abiesis studied. The content of total protein SH and glutathione is estimated with 5.5′‐Dithio‐bis‐nitrobenzoic‐acid (Ellman reagent). In addition structural protein SH is measured microspectrophotometrically in sections stained with the SH reagent, mercurochrome. The results indicate that GSH and also total protein SH and structural protein SH are increased in needles ofPicea abiesgrowing in SO2polluted areas. Compared to needles of trees in relatively unpolluted areas average increases of 2. 33 (GSH), 1.22 (total protein SH) and 1.55 (structural protein SH

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00038.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractThe Brunchorstia disease. I – Taxonomy and nomenclature of the pathogen. Critical analysis of nomenclature and taxonomy of the agent of the so‐calledScleroderriscanker has led to the adoption ofGremmeniella abietina(Lagerb.) Morelet (conidial stage:Brunchorstia pinea[Karst.] Höhnel) as the name for this pathogen.We present a detailed description of the fungus based on examination of numerous samples, and a complete critical synonymy. A neotype is proposed, a new variety is described (B. pineavar.cembrae), and we placeRhabdospora pithyophilaSaccardo in the genusFoveostromaDi Cosmo.A comparative morphological and cultural study shows the differences that exist between the genusAscocalyxNaumov andGremmeniellaMorelet the conidiogenesis of which has been reproduced for the first time in electronic micros

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00039.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractAn undescribed but native species ofArmillariais a secondary pathogen in declining stands ofEucalyptus obliquaandEucalyptus regnansin southern Tasmania. The fungus is almost ubiquitous in healthy and diseased forest and occurred epiphytically or parasitically in local lesions on the roots of 74 % of eucalypts partially excavated in 15 forest stands, 25–75 years of age. The fungus infected 85 % of logging stumps and 64 % of fire killed trees. Although the fungus only infected the sapwood of the eucalypts, it survived in infected stumps for at least 70 years. Rhizomorphs initiated most infections but did not grow freely through the soil. Pathogenicity tests confirmed that theArmillariais a weak pathoge

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00040.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractThe participation of epiphytic bacteria in the groups of bacteria dominating on the shoots and root collars of two year aspen and white poplar differs both in quantity and quality and depends on the chemical composition of the diffusion exudates related to cambium activity. This indicates that epiphytic bacteria can utilize carbon sources in the exudates and transform lignin precursors.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00041.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractThe frequency of six mechanisms of resistance to white pine blister rust is presented for 18 white pine species. The mechanisms are: prevention of needle lesions, reduced frequency of such lesions, premature shedding of infected needles, a fungicidal reaction in the short shoot, reactions that eliminate established bark infections, and the ability of a seedling to remain alive when infected. The importance of these mechanisms in selecting for resistance in the very susceptible North American white pines is discussed.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00042.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

AbstractA collection of bacterial strains isolated from decaying or living wood and bark samples were tested for xylan degradation and assimilation. This character was widely distributed among the isolates and new genera of xylan‐degrading bacteria were obtaine

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00043.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY

摘要:

Books reviewed in this article:SHIGO, A.L.:Tree Decay.RAYCHAUDHARI, S.P. (Editor):Mycoplasma diseases of trees.TRANQUILLINI, W.:Physiological ecology of the alpine timberline.Report of Forest Research Institute for 1 January to 31 December 1978.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1980.tb00044.x

出版商:Blackwell Publishing Ltd    

年代:1980

数据来源: WILEY