Molecular study of the genus Astraeus

Phosri, Cherdchai; Martín, María P.; Sihanonth, Prakitsin; Whalley, Anthony J. S.; Watling, Roy

doi:10.1016/j.mycres.2007.01.004

Cited by 40 publications

(74 citation statements)

References 30 publications

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“…Astraeus odoratus and A. asiaticus in Thailand were clearly distinguished by Phosri et al (2007) in terms of their morphology and DNA sequences of fruiting bodies. However, these species lack studies on the mycorrhizae and pure culture.…”

Section: Discussionmentioning

confidence: 99%

“…In Asia, Astraeus consists of three species and one variety: A. odoratus Phosri, Watling, M. P. Martín & Whalley (syn. A. thailandicus; Phosri et al 2004); A. asiaticus Phosri, M. P. Martín & Watling (Phosri et al 2007); A. hygrometricus (Pers.) Morgan (Morgan 1889;Ito 1959), and A. hygrometricus var.…”

Section: Introductionmentioning

confidence: 99%

“…koreanus V. J. Staněk (Staněk 1958;Kreisel 1976;Imazeki and Hongo 1989). In other geographic regions, A. hygrometricus (North America, South America, Europe, Africa, and Australia) and A. pteridis (North America and the Canary Islands) are known (Robert 2003;Baseia and Galvão 2001;De Roman et al 2005;Phosri et al 2007). Astraeus hygrometricus and A. pteridis form ectomycorrhizal associations with several host tree species including Pinus, Pseudotsuga, Alnus, Eucalyptus, and Castanea but A. odoratus and A. asiaticus have been reported only in dipterocarp forests (Trappe 1967;Malajczuk et al 1982;Phosri et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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In vitro mycorrhization of edible Astraeus mushrooms and their morphological characterization

et al. 2010

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Astraeus is the most popular and the most expensive edible ectomycorrhizal mushroom group consumed in Thailand, although it is not commonly consumed in other countries. The purpose of this work was to test the ability of Astraeus to form ectomycorrhizae with seedlings of Pinus densiflora in vitro. A single 1-week-old P. densiflora seedling was transplanted into a glass bottle containing autoclaved forest soil, and suspensions of more than 10 6 basidiospores of Astraeus odoratus or Astraeus hygrometricus were inoculated onto the seedling. Cultured mycelium was also inoculated onto an axenic pine seedling planted on sterilized vermiculite-sphagnum moss mixture in a glass bottle. Mycorrhization of A. hygrometricus was observed a few months after inoculation in both treatments. Fungal species identity of both the inoculum and ectomycorrhizae was assessed by PCR-RFLP analysis of the ITS region of rDNA. At 5-6 months after inoculation, A. hygrometricus ectomycorrhizae developed a sheath, rhizomorphs, and Hartig net on pine lateral roots. No ectomycorrhizal formation was found after A. odoratus inoculation. These results suggest that A. hygrometricus can form mycorrhizae on pine seedlings. The external morphological characteristics of A. hygrometricus ectomycorrhizae were distinct from those of other Boletales ectomycorrhizae. This article provides the first morphological and anatomical description of A. hygrometricus ectomycorrhizae.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In vitro mycorrhization of edible Astraeus mushrooms and their morphological characterization

et al. 2010

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“…However, an instructive cladogram has resulted from these studies that has isolated a European morphotype, and two North American groupings, one of which includes recent collections determined as A. pteridis Shearer. The last species can now be confirmed as a distinct North American taxon (Phosri et al 2006). It would be interesting to examine in detail the Argentinian collections described by Nouhra and de Toledo (1998) and see if they are endemic and, if not, from whence they came.…”

Section: Barometer Earthstarmentioning

confidence: 93%

The sclerodermatoid fungi

Watling¹

2006

Mycoscience

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“…As the species has been recorded over wide geographic regions, the descriptions vary considerably in terms of size, shape, and color of glebal mass, exterior nature of the peridium, and microscopic characteristics of the peridium and basidiospores (Arora 1986;Imazeki and Hongo 1989;Nouhra and De Toledo 1998;Baseia and Galvão 2001;De Roman et al 2005;Phosri et al 2007). Under such circumstances, it has been suggested, based on a molecular analysis, that A. hygrometricus sensu Persoon (the French type) may be different from A. hygrometricus sensu Morgan (the North American type) (Phosri et al 2007). Furthermore, A. asiaticus, formerly identified as A. hygrometricus in Southeast Asia, was described recently as a new species based on its distinct morphological characteristics and independent phylogenetic position (Phosri et al 2007).…”

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confidence: 99%

Identification of Japanese Astraeus, based on morphological and phylogenetic analyses

et al. 2010

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To clarify the diversity of Astraeus in Japan, 35 collections of Astraeus basidiomata from Japan and Thailand were examined for their morphological characteristics and the nucleotide sequences of the rDNA ITS region and compared with several worldwide Astraeus species. Japanese Astraeus specimens were separated into two groups based on basidiome size, shape of exoperidium, and ornamentation and size of basidiospores. The phylogenetic tree analyses supported the separation, and the morphological groups belonged to different clades. The Japanese Astraeus group 1, morphologically matched to Astraeus hygromerticus var. koreanus, showed the closest phylogenetic relationship with Astraeus hygrometricus from North American and Mediterranean regions, suggesting that the Astraeus group 1 can be indentified as A. hygrometricus var. koreanus. Another Astraeus group, group 2, morphologically matched to A. hygrometricus s.l., showed a distinct monophyletic clade that was separated from A. hygrometricus complexes, indicating an undescribed species.

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Molecular study of the genus Astraeus

Cited by 40 publications

References 30 publications

In vitro mycorrhization of edible Astraeus mushrooms and their morphological characterization

In vitro mycorrhization of edible Astraeus mushrooms and their morphological characterization

The sclerodermatoid fungi

Identification of Japanese Astraeus, based on morphological and phylogenetic analyses

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