Distribution of Ectomycorrhizae in Native and Man-Made Forests

Meyer, Franz H.

doi:10.1016/b978-0-12-472850-9.50009-8

Cited by 121 publications

(65 citation statements)

References 26 publications

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“…Hasta ahora el uso de microorganismos para mejorar el desarrollo de plantas de P. radiata se ha basado principalmente en las ectomicorrizas, consideradas un factor fundamental para el crecimiento normal de las pináceas (Meyer 1973, Harley y Smith 1983. Los beneficios obtenidos varían según las condiciones ambientales y con la asociación particular de las especies involucradas (Trappe 1977, Bledsoe 1992.…”

Section: Introductionunclassified

Efecto de Trichoderma harzianum y compost sobre el crecimiento de plántulas de Pinus radiata en vivero

Donoso¹,

Lobos²,

Rojas

2008

Bosque (Valdivia)

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Section: Introductionunclassified

Efecto de Trichoderma harzianum y compost sobre el crecimiento de plántulas de Pinus radiata en vivero

Donoso¹,

Lobos²,

Rojas

2008

Bosque (Valdivia)

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“…Ectomycorrhizal fungi facilitate nutrient and water supply to the plants, and enhance vitality, so that plants can better resist pests, pathogens, and climatic stress (Perry et al 1987). In common with most European temperate forest tree species, European beech is in natural condition obligatorily associated with ECM fungi (Meyer 1973). The first description of beech-mycorrhizal symbiosis was presented by Frank (1885).…”

Section: Introductionmentioning

confidence: 99%

Diversity of ectomycorrhizal fungus assemblages on nursery grown European beech seedlings

Pietras

Rudawska

Leski

et al. 2012

Annals of Forest Science

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• Context An important feature of forest nursery management is the production of first-rate planting stock, which is closely connected with an adequate development of ectomycorrhizas on seedling roots. • Aims The aim of this study was to provide a detailed assessment of the ectomycorrhizal (ECM) fungal diversity of European beech grown in bare-root forest nursery conditions. • Methods Morphological and molecular analyzes were used to identify ECM fungi, quantify fungal richness, and record differences in the relative abundance of individual taxa. • Results Twenty-seven different mycorrhizal fungal taxa were found in four tested nurseries. Of these 27, only 6 were present in more than one nursery. Taxa richness in individual nurseries ranged from 6 to 13, indicating that ECM colonization potential is nursery-dependent. The most frequent taxa were: Tuber sp. 1, Cadophora sp., Cenococcum geophilum agg., Hebeloma sacchariolens, and Laccaria tortilis. According to the analysis of similarity, ECM fungal communities were significantly different between nurseries (R = 0.7741; p < 0.0001). • Conclusion Beech seedlings grown in bare-root nurseries are colonized by a highly diverse suite of ECM fungi; thus, artificial inoculation of seedlings is generally not necessary in nursery practice.

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“…Las coníferas, y en particular el género Pinus, necesitan establecer asociaciones simbióticas con hongos ectomicorrícicos para proveerse de nutrientes esenciales, principalmente nitrógeno, fósforo y agua (Meyer 1973, Read et al 1992, Smith y Read 2008. Numerosos estudios han demostrado la superioridad de las plántulas micorrizadas frente a las no micorrizadas en términos de establecimiento y supervivencia en campo, generando mejores respuestas a los crecimientos en las forestaciones (Gagnon et al 1988 y referencias allí incluidas, Stenström et al 1990, Krasowski et al 1999, Jumpponen 2001, Van Tichelen et al 2001, Dunabeitia et al 2004, Ortega et al 2004.…”

Section: Introductionunclassified

Evaluación del estado micorrícico de plántulas de Pinus ponderosa producidas bajo fertirriego, sin manejo de la micorrización

Salomón¹,

Rajchenberg

Barroetaveña

2009

Bosque (Valdivia)

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SUMMARYSeveral reports of tree planters from the Patagonian Andes region of Chubut (Argentina) have pointed out that seedlings of Pinus ponderosa, obligate ectotrophic species, produced in greenhouses with high levels of fertilization without ectomycorrhizal inoculum applications, showed low or null ectomycorrhizal infection at the end of nursery stage but had excellent performance in plantation sites during the first years. This study was planned to evaluate if those seedlings develop mycorrhizal associations once installed in plantations, and if those associations are originated from inoculums acquired in the nursery. Three evaluations were done: 1) analyses of seedlings at the end of nursery period, to evaluate their initial mycorrhizal condition, 2) analyses after 6 month, with seedlings transplanted into pots with semi-sterile substrate, to establish if there exists inoculum in the system that did not express because of the high fertilization levels and, 3) analyses after 24 month, with seedlings planted in a field distant from any source of ectomycorrhizal inoculum, to evaluate the associations developed in the planting site. Results showed that: 1) the studied nursery produced seedlings with null or very low levels of mycorrhization, with low morphotypes' richness; 2) seedlings showed very high mycorrhizal percentages after 6 months (under greenhouse conditions) and after 24 months (in field conditions); 3) different mycorrhizal fungi behave differently under fertilization. The analyzed nursery fortuitously incorporated mycorrhizal inoculum that rapidly colonized seedlings, immediately after fertilization was interrupted. This fact demonstrates that the hypothesis that ponderosa pine seedlings can establish and grow in anectotrophic environments without EM symbioses is false.Key words: inoculum, nursery, mycorrhizas, Patagonia. RESUMENRepetidos reportes de plantadores de la zona cordillerana del Chubut (Argentina) han señalado que las plántulas de Pinus ponderosa, especie ectotrófica obligada, producidas bajo invernáculo con fertirriego y sin aplicación de inoculantes ectomicorrícicos, que presentaban baja o nula infección ectomicorrícica al terminar la etapa de vivero, mostraron excelentes comportamientos en los sitios de plantación durante los primeros años. Por ello, se planteó este estudio con el objetivo de constatar si las plántulas allí producidas desarrollan asociaciones micorrícicas una vez llevadas a plantación, y si éstas se originan a partir de inóculo adquirido en el vivero. Para ello, se realizaron tres evaluaciones de las plántulas: 1) al salir del vivero de producción acelerada, para constatar el estado micorrícico inicial, 2) después de seis meses de crecimiento luego de un trasplante a macetas con sustrato semi-estéril, para constatar si existía inóculo en el sistema que no se expresaba por el fertirriego, y 3) después de 24 meses luego de implantadas en un predio alejado de cualquier fuente de inóculo ectomicorrícico, para constatar el tipo de asociaciones formadas en el sitio de planta...

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Distribution of Ectomycorrhizae in Native and Man-Made Forests

Cited by 121 publications

References 26 publications

Efecto de Trichoderma harzianum y compost sobre el crecimiento de plántulas de Pinus radiata en vivero

Efecto de Trichoderma harzianum y compost sobre el crecimiento de plántulas de Pinus radiata en vivero

Diversity of ectomycorrhizal fungus assemblages on nursery grown European beech seedlings

Evaluación del estado micorrícico de plántulas de Pinus ponderosa producidas bajo fertirriego, sin manejo de la micorrización

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