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General Information

COMMON NAMES: Papaya Ringspot Virus, Pawpaw Ringspot Virus COOK ISLANDS STATUS: Native but recent (2004), Eradicated, Potential Invasive; S.Group - RR only; Living tissue (Papaya) SIGNIFICANCE LIST: ; pathogen on Pawpaw

Cook Islands Distribution

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Southern Group: XQe    Makatea: -
RR	MG	AT	MK	MT	AK	PL	TK	MN
XQe	-	-	-	-	-	-	-	-

Northern Group: -
TN	MH	RK	PK	NS	SW
-	-	-	-	-	-

Papaya ringspot virus
SYNONYMS: Watermelon mosaic virus 1

TAXONOMY: VIRUSES; RNA; positive ssRNA; Potyviridae

SIGNIFICANCE NOTES -
NEGATIVE SIGNIFICANCE: pathogen on Pawpaw. Comments: This virus devastated the Papaya industry of Hawai‘i, although the industry re-emerged in the 1990s with plants genetically modified for virus-resistance. First recorded on a plant on Rarotonga in June 2004.

Vouchers:
Rarotonga found on one Pawpaw tree, June 2004, ID R.Davis (SPC virologist), MoA destroyed the tree and sprayed the area for aphids (CINews 26/June/2004), noted that this virus spreads only via seeds and seedlings and NOT by fruit. CINews (24/July/2006) declared Rarotonga free of the virus because of the initial prompt action. However the cucurbit-form is common on watermelon adn pumpkin relatives, and could mutate again into the papaya-form, therefore planters should NOT interplant cucurbits with Pawpaw.

References:
None recorded.

Data Update History (information):
zB04b

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