A new biological function of Shiitake mushroom, Lentinula edodes, in a myco-heterotrophic orchid, Erythrorchis ochobiensis

Umata, Hidetaka

doi:10.1007/bf02461583

Cited by 25 publications

(17 citation statements)

References 3 publications

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“…Orchid associates are found in the euagarics clade (Armillaria, Ceratobasidium, and Lentinula), cantharelloid clade (Tulasnella), polypore clade (Ganoderma, Loweporus, Microporus), and hymenochaetoid clade (Erythromyces and Phellinus) (Currah and Zelmer 1992;Umata 1995Umata , 1998, as well as in the Auriculariales (Umata 1997). However, it is not known whether Lentinula and the polypores and hymenochaetoid fungi listed form fully functional orchid mycorrhizae in nature, or only promote orchid seed germination (Umata 1995(Umata , 1998.…”

Section: Mycorrhizaementioning

confidence: 98%

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Basidiomycota: Homobasidiomycetes

Hibbett

Thorn

2001

Systematics and Evolution

104

109

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Section: Mycorrhizaementioning

confidence: 98%

“…However, it is not known whether Lentinula and the polypores and hymenochaetoid fungi listed form fully functional orchid mycorrhizae in nature, or only promote orchid seed germination (Umata 1995(Umata , 1998.…”

Section: Mycorrhizaementioning

confidence: 99%

Basidiomycota: Homobasidiomycetes

Hibbett

Thorn

2001

Systematics and Evolution

104

109

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“…The germination of MHP (Leake, 1994(Leake, , 2004 other than orchids (e.g. Irmisch, 1853;Bernard, 1899;Weber, 1981;Smreciu & Currah, 1989;Rasmussen & Whigham, 1993;Umata, 1998;McKendrick et al, 2002;Yagame et al, 2007) and Ericaceae (e.g. Velenovsky, 1907;Christoph, 1921;Francke, 1935;Leake et al, 2004;Bidartondo & Bruns, 2005) remains unknown.…”

Section: Introductionmentioning

confidence: 98%

Ontogeny of the mycoheterotrophic species Afrothismia hydra (Burmanniaceae)

Imhof

Sainge

2008

Botan J Linn Soc

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The complete ontogeny of the mycoheterotrophic Afrothismia hydra (Burmanniaceae) from seed to seed dispersal is presented. The oblong-ovoidal seeds are up to 0.7 mm long. They germinate with root tissue only, disrupting the seed coat and developing a primary ovoid root tubercle. At the proximal end of the tubercle, a second tubercle arises and further root initials indicate the sequential growth of more root tubercles with filiform extensions resulting in a small root aggregate. The seed coat often remains attached to this structure. When the root aggregate enlarges, a central axis to which all roots are connected becomes visible. This axis has a growth pole where new root tubercles arise. The same growth pole will later develop into a stem with scale leaves finally terminating in a flower. Flowers develop sympodially when the mature plant is only several centimetres long. After anthesis, the corolla tube disintegrates, leaving a pyxidium which opens by means of a peculiar elongating placenta, here called 'placentophore'. The placentophore elevates the placenta with attached seeds above the flowering level and is interpreted as an adaptation to ombrohydrochory. The reduction of hypocotyl, cotyledon and primary shoot is discussed with regard to the classical germination concepts of monocotyledons and with mycoheterotrophic dicotyledons.

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“…the orchid. Seed germination and successive development were recorded as the six stages described previously ( Umata, 1998) Table 2 and Figs. 1-3, while the rupture of outer seed-coats was not observed in the absence of isolates.…”

Section: Trametes Hirsutamentioning

confidence: 99%

“…In orchid mycorrhizas, the symbiotic mycorrhizal association varies not only with the species of fungus but also among isolates of the same species (e.g. Alexander and Hadley, 1983;Masuhara and Katsuya, 1991;Umata, 1997Umata, , 1998. However, no information has yet been reported from cocultures using monokaryons and reconstituted dikaryons.…”

mentioning

confidence: 96%

Germination and growth of Erythrorchis ochobiensis (Orchidaceae) accelerated by monokaryons and dikaryons of Lenzites betulinus and Trametes hirsuta

Umata

1999

Mycoscience

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Four sib-monokaryons and two reconstituted dikaryons of two basidiomycetes, Lenzites betulinus and Trametes hirsuta, accelerated the seed germination of Erythrorchis ochobiensis, an achlorophyllous orchid. All isolates of L. betulinus and three isolates of T. hirsuta induced the development of plants from germinated seeds. Although three monokaryotic isolates of T. hirsuta failed to induce the development of plants, the reconstituted dikaryons induced the development.Key Words achlorophyllous orchid; dikaryon; monokaryon; orchid mycorrhiza; seed germination.About 90~ of basidiomycetous fungi are known to be heterothallic and to be tetra-or bipolar (Whitehouse, 1949a(Whitehouse, , 1949b. In the tetrapolar species, four different types of monokaryons and two different types of dikaryons are produced from a dikaryotic parent as a result of sexual production. These genetically different types may interact differently in their mycorrhizal association with a host plant. The variability in ectomycorrhizal formation among monokaryons and reconstituted dikaryons has been investigated by coculture, through which considerable information has been obtained (e.g. Debaud et al., 1995;Kropp and Anderson, 1994;Rosado et al., 1994). The ability of monokaryons to form ectomycorrhizas varies with the species of fungus (Debaud et al., 1988;Kropp et al., 1987; Kropp and Fortin, 1988;Wong et al., 1989). In orchid mycorrhizas, the symbiotic mycorrhizal association varies not only with the species of fungus but also among isolates of the same species (e.g. Alexander and Hadley, 1983;Masuhara and Katsuya, 1991;Umata, 1997Umata, , 1998. However, no information has yet been reported from cocultures using monokaryons and reconstituted dikaryons. In this investigation, cocultures were carried out in vitro between Erythrorchis ochobiensis (Hayata) Garay, an achlorophylIous orchid, and sib-monokaryons and reconstituted dikaryons of Lenzites betulinus (L.: Fr.) Fr. and Trametes hirsuta (Wulfden: Fr.) Pildt. The purposes of this investigation were, (i) to determine whether monokaryons show symbiotic association in the orchid mycorrhiza, and (ii) to assess inter-and intraspecific variation in the mycorrhizal symbiosis among isolates. About 50 capsules of the orchid were collected at Kutinoerabujima Isl., Kagoshima Prefecture, and seeds from the capsules were mixed well and refrigerated after air-drying.Basidiomes of L. betulinus and T. hirsuta, both of which are tetra-polar (Nobles, 1965), were collected on the same dead wood of Prunus serrulata var. spontanea Makino at Takakuma Experimental Forest of Kagoshima University Forests. Neither polypore has been observed to colonize roots of E. ochobiensis in the field or been examined for its symbiotic potential with the orchid. Basidiospores obtained aseptically from a single basidiome were inoculated on a plate of malt extract agar medium (MEA) and incubated at 25~ After 4d of incubation, about 15-20 germinated spores of each fungus were transferred to fresh MEA plates and compatibility tests were c...

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A new biological function of Shiitake mushroom, Lentinula edodes, in a myco-heterotrophic orchid, Erythrorchis ochobiensis

Cited by 25 publications

References 3 publications

Basidiomycota: Homobasidiomycetes

Basidiomycota: Homobasidiomycetes

Ontogeny of the mycoheterotrophic species Afrothismia hydra (Burmanniaceae)

Germination and growth of Erythrorchis ochobiensis (Orchidaceae) accelerated by monokaryons and dikaryons of Lenzites betulinus and Trametes hirsuta

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