摘要:

AbstractEndophytic fungi in needles of healthy‐looking and diseased Norway spruce (Picea abies [L.] Karsten).Endophytic fungi were isolated from surface‐sterilized, 5 to 6 year old needles of healthy‐looking and diseased trees. Two fungal species could be isolated frequently:Lophodermium piceaeandTiarosporella parca. At any site neitherL. piceaenorT. parcacould be isolated more frequently from needles of diseased trees. The possible types of relationship between these two fungi and Norway spruce are disc

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00220.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThe superoxide dismutase (SOD EC 1.15.1.1) activity in Scots pine (Pinus sylvestris) and Norway spruce (Picea abiesL. Karst.) needles in urban and rural trees of northern Finnish populations was studied. Enzyme activity was higher in pine than in spruce needles. Two pine clones from eastern Finland and Lapland revealed great differences in specific SOD enzyme activity.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00221.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractIsolation and identification of the sesquiterpene (+/−)‐Torreyol from pure cultures of the ectomycorrhizal fungus Cortinarius odorifer Britz. Several strains of the ectomycorrhizal fungusCortinarius odoriferproduce in pure culture crystals of the sesquiterpene (+/−)‐Torreyol. The identification has been made on the basis of spectral e

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00222.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractSurveys were undertaken on Mt. Mitchell, N. C. (USA) from Spring 1984 through 1987 to determine the extent and rate of decline and mortality of red spruce and Fraser fir ecosystems. Data indicate that regardless of cause and effect mechanisms the physical structure and integrity of the boreal montane forest has greatly deteriorated over the past 4 years. Along ridges, and particularly on west facing aspects greater than 80% of all mature stands are dead. No definitive conclusions can be made concerning etiological agents; however, current hypotheses include biotic factors, climatic abberations, and/or the acute or chronic stress from anthropogenic pollutants.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00223.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractBasidia ofChondrostereum purpureumformed sympodially and extended enteroblastically and were delimited by a primary septum with a septal pore apparatus. Basidia were initially binucleate and following karyogamy and meiosis four daughter nuclei formed and entered basidiospore initially. Sterigmata formed by enteroblastic extension of the innermost basidial layer. Basidiospore initials developed on the top of sterigmata and cytoplasmic vesicles were numerous in their apices. Basidiospore initials were delimited from sterigmata by formation of an electron‐lucent zone. Basidiospores were released by rupture at or below the electron‐lucent zone, often leaving a portion of the sterigmal wall attached. Sporophores and basidia survived desiccation (22% water content) by vacuolation and condensation of cytoplasm. Sporophores had a strong affinity for moisture and rehydrated rapidly attaining water contents of 80% in less than ten minutes. Several hours elapsed however before a significant number of basidiospores were released. Field studies showed the importance of rain in hydrating sporophores and influence of high relative humidity in maintaining spore rele

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00224.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractTiarosporella parca (Berk. et Br.) Whitney—first record for Austria. In a diseased mixed stand of Norway spruce near Salzburg cityTiarosporella parcacould be recorded the first time for Austria. Connections with the “Yellowing” of spruce needles and frequency of fructifications of the fungus are disc

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1988.tb00225.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY