Ganoderma lucidum var. orbiformis (Fr.)
Rick (1960)
Ganoderma orbiforme – most commonly known as G. boninense or just Ganoderma in oil palm pathology – is a species of
polypore fungus that is widespread across southeast Asia. It is a
plant pathogen that causes basal stem rot, a disease of the
African oil palm (Elaeis guineensis). The fungus was first
described scientifically in 1838 by
Elias Magnus Fries from collections made in
Guinea.[1]Leif Ryvarden transferred it to the genus Ganoderma in 2000.[2] In addition to its
type locality, the fungus has also been collected from the
Bonin Islands in the Pacific, and from Venezuela and Puerto Rico.[2]
Transmission
G. orbiforme is not a
soil borne pathogen, meaning it does not grow in soil and does not infiltrate from soil and into the root system.[3]: 417 It is however also not killed by soil, and will reside in dead, buried palm trunk material.[3]: 417 This has especially been observed when Oryctes rhinoceros-infested material was buried.[3]: 417
Water agar is usable for
isolation of this fungus, and is the simplest and cheapest.[7]: 21 CABI provides research and
technique information for lab work with this pathogen.[7]
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abRyvarden, Leif (2000). "Studies in neotropical polypores 2: a preliminary key to neotropical species of Ganoderma with a laccate pileus". Mycologia. 92 (1): 180–191.
doi:
10.2307/3761462.
JSTOR3761462.