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Changes in the diversity of the mycorrhizal fungi of orchids as a function of the water supply of the habitat
- Z. Illyés, K. Halász, S. Rudnóy, Noémi Ouanphanivanh, Tamás M Garay, Z. Bratek
- 4 December 2012
The great variability in the composition of the symbiotic fungi of orchids in the different habitats suggests that efforts to preserve orchid habitats require an accurate knowledge of orchid habitats, including data on potential fungal partners.
Higher seed number compensates for lower fruit set in deceptive orchids
The results indicate that deceptive orchids can compensate for their lower fruit-set by having more (but not larger) seeds in a fruit than rewarding species, and highlight possible ways in which plants can increase their reproductive success in face of pollinator limitation.
Aspects of in situ, in vitro germination and mycorrhizal partners of Liparis loeselii
Investigation of asymbiotic in vitro and symbiotic in situ germination of the rare and protected terrestrial orchid, Liparis loeselii (L.) Rich found the ‘root segment technique’ was effective for isolation of only one species, Tulasnella, whereas using ‘in situ bating’ yielded isolates of both Tulanella and Ceratobasidium species.
STUDIES ON TUBER MACROSPORUM VITTAD. NATURAL TRUFFLE HABITATS IN THE CARPATHO-PANNON REGION
Literature considers Tuber macrosporum as a truffle distributed between 41° and 51° latitude north in Europe on soils generally limy and heavy in habitats similar to Tuber magnatum concerning…
Could orchids indicate truffle habitats? Mycorrhizal association between orchids and truffles
This investigation aimed at analysing the data of a computerized database on hypogeous fungi gathered in the Carpathian basin, and also the coenological releves made in their quadrat, and found 16 hypOgeous fungal genera with close presence of orchids that is l3 % of all releves.
Nuclear ribosomal DNA ITS paralogs as evidence of recennt interspecific hybridization in the genus Ophrys [Orchidaceae]
The study suggests that nrITS regions can be generally useful in the study of Ophrys systematics and phylogeography and for analyzing the hybrid zones of related Ophreys species groups.
High levels of effective long-distance dispersal may blur ecotypic divergence in a rare terrestrial orchid
The findings of this study suggest that the homogenizing effect of effective long-distance seed dispersal may overwhelm divergent selection associated to habitat type in fen orchids in Northwest Europe.
[Analgesic effect of pituitary implants in incurable cancer].
[Total duplication of the ulnar region, aplasia radii, ulna duplex and octdactylia].
The most recent results on orchid mycorrhizal fungi in Hungary.
- Z. Illyés, Noémi Ouanphanivanh, S. Rudnóy, Á. K. Orczán, Z. Bratek
- Biology, MedicineActa biologica Hungarica
Observations suggest that fungi belonging to the genus Epulorhiza are more tolerant of water-stress than the other investigated genera.