Abstract
The study of factors influencing the production and development of wild edible mushroom sporocarps is extremely important in the characterization of the fungi life cycle. The main objective of this work is to determine how tree age influences the speed of sporocarp growth of edible ectomycorrhizal fungi Boletus edulis and Lactarius deliciosus in a Pinus sylvestris stand. This study is based on information recorded on a weekly basis every autumn between 1995 and 2008 in a set of permanent plots in Spain. Sporocarps are collected weekly, and as a result, specimens may not have reached their maximum size. The study area is a monospecific P. sylvestris stand. Three age classes were considered: under 30 years, between 31 and 70 years, and over 70 years. Sporocarps of B. edulis and L. deliciosus grow faster in the first age class stands than in the other two, and in the second age class stands, sporocarps are more than 50% smaller. The average weight of the picked B. edulis sporocarps clearly varies in the three age classes considered, with its maximum in the first age class (127 g and 6.8 cm cap diameter), minimum in the second age class (68 g and 4.7 cm cap diameter), and showing a relative maximum in the third (79 g and 4.3 cm cap diameter). L. deliciosus sporocarps are on average larger in the first age class (48 g and 7.4 cm cap diameter), decreasing in the second (20 g and 5.8 cm cap diameter) and also in the third (21 g and 5.3 cm cap diameter). The results show the influence of tree age in speed of sporocarp growth for the two ectomycorrhizal species.
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Acknowledgments
This work was supported by INIA (Spanish National Institute for Agricultural Research, Spanish Government) project RTA 03-046. We would like to thank all of the staff from DIEF Valonsadero involved in the maintenance of the plots and mushroom picking in Pinar Grande over the years. We also thank Dr. Rafael Alonso Ponce and Jeanette Hodgman for their English language advice and Dr. Óscar Cisneros for his statistical advice.
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Ortega-Martínez, P., Águeda, B., Fernández-Toirán, L.M. et al. Tree age influences on the development of edible ectomycorrhizal fungi sporocarps in Pinus sylvestris stands. Mycorrhiza 21, 65–70 (2011). https://doi.org/10.1007/s00572-010-0320-8
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DOI: https://doi.org/10.1007/s00572-010-0320-8