Edwards Ivan P, Cripliver Jennifer L, Gillespie Andrew R, Johnsen Kurt H, Scholler M, Turco Ronald F
Department of Agronomy, Purdue University, Lilly Hall of Life Sciences, 915 West State Street, West Lafayette, IN 47907-2054, USA.
Present address: Institute of Terrestrial Ecology, Swiss Federal Institute of Technology (ETH Zurich), Grabenstrasse 3, CH 8952, Schlieren, Switzerland.
New Phytol. 2004 Jun;162(3):755-770. doi: 10.1111/j.1469-8137.2004.01074.x.
• We investigated the effect of an optimal nutrition strategy designed to maximize loblolly pine (Pinus taeda) growth on the rank abundance structure and diversity of associated basidiomycete communities. • We conducted both small- and large-scale below-ground surveys 10 years after the initiation of optimal nutrition, and used TRFLP of selectively PCR-amplified nrDNA ITS to determine the distribution and abundance of macrofungal basidiomycete species in c. 200 soil samples collected from optimally fertilized and unfertilized treatments at the SETRES loblolly pine experimental site, North Carolina, USA. • Our results indicated an increased relative abundance of Tylopilus and Thelephora spp. on optimally fertilized stands. Our results also suggested improved mycelial growth of several species, possibly caused by increased connectivity in the forest floor as a result of increased plant growth. • In addition, our results suggest a trend towards reduced basidiomycete diversity, and that large-scale application of optimal nutrition may need to be sensitive to increased nitrate availability.
• 我们研究了旨在最大化火炬松（Pinus taeda）生长的最佳营养策略对相关担子菌群落的秩多度结构和多样性的影响。• 在实施最佳营养10年后，我们进行了小规模和大规模的地下调查，并使用选择性PCR扩增的nrDNA ITS的TRFLP来确定从美国北卡罗来纳州SETRES火炬松实验 site 的最佳施肥和未施肥处理中收集的约200个土壤样本中大型真菌担子菌物种的分布和丰度。• 我们的结果表明，在最佳施肥林分中，粉孢牛肝菌属（Tylopilus）和革菌属（Thelephora）的相对丰度增加。我们的结果还表明，几种物种的菌丝体生长有所改善，这可能是由于植物生长增加导致林地连通性提高所致。• 此外，我们的结果表明担子菌多样性有降低的趋势，并且最佳营养的大规模应用可能需要对硝酸盐可用性增加保持敏感。
