[EMAIL PROTECTED] spaketh thusly:
>Have there been any studies done with regard to the transmission of
>viruses from one orchid to another due to mealybugs or other insects?
>Your reply here or off forum is appreciated.
Known susceptibilities within the family Orchidaceae:
http://image.fs.uidaho.edu/vide/famly094.htm
Turnip mosaic potyvirus (potyvirus from the "potato y virus" family):
Transmitted by a vector; an insect; 40-50 spp.
especially Myzus persicae and Brevicoryne
brassicae; Aphididae. Transmitted in a
non-persistent manner. Virus transmitted by
mechanical inoculation; not transmitted by seed.
Cymbidium mosaic potexvirus (potexvirus from the
"potato x virus" family, for those that are wondering):
Transmitted by means not involving a vector.
Virus transmitted by mechanical inoculation;
transmitted by contact between plants.
Orchid fleck (?) rhabdovirus:
Virus transmitted by mechanical inoculation; not
transmitted by seed (some isolates infect better above 30ºC).
Cymbidium ringspot tombusvirus (name from the "tomato bushy stunt virus):
Transmitted by means not involving a vector.
Virus transmitted by mechanical inoculation;
transmitted by contact between plants; not
transmitted by seed (in Trifolium incarnatum,
Phaseolus vulgaris cv. The Prince, Nicotiana clevelandii).
Odontoglossum ringspot tobamovirus (name from
"tobacco mosaic virus," although OrSV is probably not the same as TbMV):
Transmitted by means not involving a vector.
Virus transmitted by mechanical inoculation.
Dendrobium mosaic potyvirus:
No data on transmission.
Dendrobium vein necrosis (?) closterovirus:
No data on transmission, but other closeroviruses
require a vector for transmission.
Habenaria mosaic (?) potyvirus:
Transmitted by a vector; an insect; Myzus
persicae; Aphididae. Not transmitted by Aphis
gossypii. Transmitted in a non-persistent manner.
Virus transmitted by mechanical inoculation.
Pecteilis mosaic (?) potyvirus:
No data on transmission.
Vanilla necrosis potyvirus:
Transmitted by a vector; an insect; Myzus
persicae; Aphididae. Not transmitted by Aphis
gossypii. Transmitted in a non-persistent manner.
Virus transmitted by mechanical inoculation.
Vanilla mosaic potyvirus:
Transmitted by a vector; an insect; Myzus
persicae; Aphididae. Transmitted in a non-persistent manner.
Oddly, bean yellow mosaic virus is not
listed for Orchidaceae; presumably nobody has
written a paper in the refereed literature on the
subject. Bean yellow mosaic potyvirus, as I think
some orchid growers will back me up on, is
apparently a nasty little booger in some orchid
collections (transmissivity data not specific to orchids):
Transmitted by a vector; an insect; more than 20
spp. including Acyrthosiphon pisum, Macrosiphum
euphorbiae, Myzus persicae, Aphis fabae;
Aphididae. Transmitted in a non-persistent
manner. Virus transmitted by mechanical
inoculation; transmitted by seed (to 3%).
As an aside, here's the data on tomato
spotted wilt tospovirus (TSWV, which may be
responsible for some weird things we see in
orchids) (transmissivity data not specific to orchids):
Transmitted by a vector; an insect; Thrips
tabaci, T. setosus, T. parmi, Frankliniella
schultzei, F. occidentalis, F. fusca and
Scirtothrips dorsalis; Thysanoptera. Transmitted
in a persistent manner. Virus retained when the
vector moults; multiplies in the vector
(probably); not transmitted congenitally to the
progeny of the vector; transmitted by mechanical
inoculation; transmitted by grafting; not
transmitted by contact between plants; not
transmitted by seed; not transmitted by pollen.
Mealybugs- not so much. Doesn't mean
they can't do it; just means nobody's written it up as an observation.
Cheers,
-AJHicks
Chandler, AZ
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