Ectomycorrhizas of Cortinarius helodes and Gyrodon monticola with Alnus acuminata from Argentina. Mycorrhiza

Instituto Multidisciplinario de Biología Vegetal (CONICET), C.C. 495, 5000, Córdoba, Argentina.
Mycorrhiza (Impact Factor: 3.46). 01/2005; 15(1):7-15. DOI: 10.1007/s00572-003-0278-x
Source: PubMed


Field ectomycorrhizas of Cortinarius helodes Moser, Matheny & Daniele (sp. nov) and Gyrodon monticola Sing. on Alnus acuminata Kunth (Andean alder, aliso del cerro) are described based on morphological and anatomical features. Ectomycorrhizal roots were sampled beneath fruitbodies of C. helodes and G. monticola from two homogeneous A. acuminata forest sites located in Tucuman and Catamarca Provinces in Argentina. C. helodes ectomycorrhizas showed a thick white to beige mantle exuding a milky juice when injured, were bluish toward the apex, and had hyphal strands in the mantle. G. monticola ectomycorrhizas showed some conspicuous features like highly differentiated rhizomorphs, inflated brown cells on the mantle surface, and hyaline and brown emanating hyphae with dolipores. Restriction fragment length polymorphism analysis of the nuclear rDNA internal transcribed spacer provided a distinctive profile for each of the collections of fruitbodies and the mycorrhizal morphotypes.

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    • "ibbett 2006 LD : Agerer 2006 ( Zangia ) Li et al . 2011 LD 3 / paxillus - gyrodon Alpova * Godbout & Fortin 1983 ; Danielson & Visser 1988 ; Massicotte et al . 1988 Massicotte et al . 1988 ; Miller et al . 1991 ; Taylor & Bruns 1999 ; Bergemann & Garbelotto 2006 ; Binder & Hibbett 2006 LD : Agerer 2006 Gyrodon s . stricto ( Godbout & Fortin 1985 ) Becerra et al . 2005a ; Tedersoo et al . 2006b ; Tedersoo et al . 2009c Kretzer & Bruns 1999 ; Binder & Hibbett 2006 ; Yang et al . 2006 LD : Agerer 2006 Melanogaster * Malajczuk et al . 1982 ; Molina & Trappe 1982 ; Pera & Alvarez 1995 Shi et al . 2002 ; Wiedmer et al . 2004 ; Cline et al . 2005 ; Bergemann & Garbelotto 2006 ; Tedersoo et al . 2006b ; Binde"
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    Mycorrhiza 09/2009; 20(4):217-63. DOI:10.1007/s00572-009-0274-x · 3.46 Impact Factor
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    • "The mycorrhizal status of certain families and genera is varied; it is important to evaluate mycorrhizas in terms of soil characteristics and the mycorrhizal status of the dominant species, and thus, the inoculum that prevails in any particular habitat [2] [25] [26]. Attention has been focused on the mycorrhizas of forests in the humid tropics [11] [12] [50] [51] [60] [72] [73] [77], but there is little information concerning the distribution and abundance of these types of symbioses in the Yungas [3] [4] [5] [6] [7] [8]. Little is known of this endangered ecosystem and an urgent call is made for its conservation. "
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    Annals of Forest Science 10/2007; 64(7):765-772. DOI:10.1051/forest:2007056 · 1.98 Impact Factor
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    • "From studies on ectomycorrhizae of alder species in North America, Europe and South America, it is known that ectomycorrhizal symbionts are dominant on Alnus sp. roots [9] [10] [31] [45] [46]. A. acuminata is associated with a number of ECM fungi belonging to the genera Russula, Lactarius, Inocybe, Laccaria, Cortinarius, Naucoria, Alpova [32] [47] [50]. Ectomycorrhizas are relatively specialized with a distinctive morphology and A. Becerra et al. "
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    ABSTRACT: The objective of this study was to determine patterns of ECM colonization of Andean alder at two natural forests in relation to soil parameters at two different seasons (autumn and spring). The soil parameters studied were field capacity, pH, electrical conductivity, available P, total N and organic matter. Twelve ECM morphotypes were found on A. acuminata roots. The ECM colonization varied among soil types and was affected positively by electrical conductivity. Multiple regression relationships among ECM colonization and edaphic properties variables showed no significant differences at two seasons and among soil types with respect to morphotype diversity values. Positive correlations were found between three morphotypes (Cortinarius tucumanensis, Gyrodon monticola and Russula alnijorrulensis) and soil types and two other morphotypes (Naucoria escharoides and Lactarius sp.) between two seasons. Results of this study provide evidence that ECM colonization of A. acuminata is affected by some chemical edaphic parameters and indicate that some ECM morphotypes are sensitive to changes in seasonality and soil parameters.
    Annals of Forest Science 06/2005; 62(4). DOI:10.1051/forest:2005027 · 1.98 Impact Factor
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