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Khasa P.D. Sigler L. Chakravarty P. Dancik B.P. Erickson L. Mc Curdy D. 《New Forests》2001,22(3):179-197
The effect of three levels of fertilizer on thegrowth of three species of containerized-grownconifer seedlings (Pinus contorta, Picea glauca, and Picea mariana) and twospecies of bare-root conifer seedlings (Pinus sylvestris and Larix sibirica),and on the colonization of these seedlings bysix species of ectomycorrhizal fungi (Hebeloma longicaudum, Laccaria bicolor,Paxillus involutus, Pisolithustinctorius, Rhizopogon vinicolor andSuillus tomentosus), was studied. Thegrowth of the seedlings in both container-grownand bare-root nurseries increased as the levelsof fertilizer increased. For better seedlinggrowth and environmental quality it may be possible to reduce the level of fertilizers in commercial nurseries upto 33% by using selected mycorrhizal fungi.Ectomycorrhizal colonization in all seedlingswas not affected by fertilizer levels. Hebeloma longicaudum, L. bicolor, P.involutus, and P. tinctorius formedwell-developed ectomycorrhizae, whereasectomycorrhizal development by R.vinicolor and S. tomentosus was poor.Native mycorrhizal fungi colonizednon-inoculated control seedlings; however,their colonization was always lower than withinoculated fungi. 相似文献
956.
Endophytic fungi in leaves and twigs of Quercus petraea . Surface sterilized leaf and twig samples taken in 1989 from sessile oak (Quercus petraea) in Austria yielded host-specific as well as unspecific ubiquistic endophytes. In leaves, Aureobasidium apocryptum and Apiognomonia quercina were the most frequent taxa, while Colpoma quercinum was the dominant species in twigs. The colonization rates of individual species were subjected to seasonal variation. 相似文献
957.
K.?ShimizuEmail author R.?Fujita R.?Kondo K.?Sakai S.?Kaneko 《Journal of Wood Science》2003,49(2):193-196
The morphological features and dietary functional components of two strains (FPF-13 and Oninome-B) of Pholiota adiposa (numerisugitake mushroom) grown on artificial bed blocks were examined. The components examined were chitin, mannitol, trehalose,
guanosine 5′-monophosphate, ergosterol, and β-glucan. There was a significant difference in the external shape of the two strains. However, the differences in the contents
of functional components between the two strains, as well as between the pilei and stipes of the strains, were small. In both
strains the trehalose content was much higher than the mannitol content, in contrast to those of Lentinula edodes. From a commercial point of view, Oninome-B has a clear advantage over other strains of P. adiposa owing to its less removable scale.
Received: May 15, 2002 / Accepted: June 10, 2002
Acknowledgment The authors thank Dr. F. Eguchi (Takasaki University of Health and Welfare) for his technical advice on the β-glucan analysis.
Part of this report was presented at the 51st Annual Meeting of the Japan Wood Research Society, Tokyo, April 2001
Correspondence to:K. Shimizu 相似文献
958.
Shohei Kaneko Katsuhiko Yoshitake Shuji Itakura Hiromi Tanaka Akio Enoki 《Journal of Wood Science》2005,51(3):262-269
The degradation of wood, filter paper cellulose, and a lignin-substructure model, was measured in cultures of seven fungi usually regarded as brown-rot fungi. Hydroxyl radical production and the accumulation of oxalic acid in the cultures were also measured. Four of the fungi, Gloeophyllum trabeum, Tyromyces palustris, Laetiporus sulphureus, and Postia placenta, were typical brown-rot fungi, in that they preferentially degraded and eliminated the polysaccharides in wood and produced large amounts of hydroxyl radical. The rates of hydroxyl radical generation in cultures of the four fungi were directly proportional to the degradation rates of wood, cellulose, and the lignin-related compound, and inversely proportional to the amount of oxalic acid in the cultures. Two of the fungi, Daedalea dickinsii and Lentinus lepideus, did not degrade any of the substrates significantly and produced very little hydroxyl radical. Coniophora puteana had the highest rate of cellulose degradation, but did not degrade wood or the lignin model significantly and produced only negligible amounts of hydroxyl radical. These results indicate that brown-rot fungi produce large amounts of hydroxyl radical for the degradation of wood and crystalline cellulose. 相似文献
959.
陕西省杨树外生菌根种类的调查研究 总被引:6,自引:3,他引:6
对陕西省35种杨树外生菌根的调查研究,鉴定出9种外生菌根真菌。研究证明,一种外生菌根真菌可侵染不同种杨树;一种杨树又可被不同的菌根真菌侵染,并观察到在同一小根上顶端形成菌套,中部和下部形成泡囊丛枝这一混合型菌根形态。 相似文献
960.
探讨了白腐菌预处理对丙酸蒸解法制取纤维素的影响.在白腐菌对玉米芯进行预处理过程中,赖锰过氧化物酶(MnP)、木质素过氧化物酶(LiP)、漆酶、木聚糖酶和纤维素酶的酶活分别在第5、 6、 7、 10和 15 d 达到最高值,分别为1.326、 10.25、 0.062 7、 0.33和 403 U/g.利用响应面分析法确定丙酸蒸解玉米芯最佳工艺条件为:料液比1∶ 10(g∶ mL),蒸解时间 70 min,丙酸质量浓度 900 g/L,产物中纤维素的质量分数为 91.09%.玉米芯经白腐菌预处理 10 d 后再用丙酸进行蒸解处理,产物中纤维素的质量分数和保留率分别为 97.12% 和 94.70%,而半纤维素和木质素的质量分数仅为 0.96% 和 0.92%. 相似文献