Articles
PAPAYA RINGSPOT VIRUS IN AUSTRALIA AND THE DEVELOPMENT OF VIRUS RESISTANT PLANTS
Article number
692_12
Pages
101 – 106
Language
English
Abstract
Papaya is a popular fruit crop in many tropical and subtropical regions.
It grows quickly and is capable of bearing large crops.
Because of extensive monoculture and a narrow gene-pool, papaya plants are susceptible to numerous diseases.
Papaya ringspot virus, type P (PRSV-P), causes the most widespread of these diseases.
Although it is not currently a major problem in Australia, PRSV-P dramatically reduces yield in many countries. Vasconcellea quercifolia is one of four wild Carica species that are known to be PRSV-P resistant.
Hybrids of these species grow vigorously in the field.
Males, females and hermaphrodites have been identified, and a few male hybrids exhibited some pollen fertility.
A backcross generation has been produced.
One plant was fertile and showed resistance to PRSV-P. Transgenic plants containing viral coat protein constructs have also shown resistance to PRSV-P in field plantings.
In this paper, progress toward achieving PRSV-P resistance for papaya using both approaches is examined.
It grows quickly and is capable of bearing large crops.
Because of extensive monoculture and a narrow gene-pool, papaya plants are susceptible to numerous diseases.
Papaya ringspot virus, type P (PRSV-P), causes the most widespread of these diseases.
Although it is not currently a major problem in Australia, PRSV-P dramatically reduces yield in many countries. Vasconcellea quercifolia is one of four wild Carica species that are known to be PRSV-P resistant.
Hybrids of these species grow vigorously in the field.
Males, females and hermaphrodites have been identified, and a few male hybrids exhibited some pollen fertility.
A backcross generation has been produced.
One plant was fertile and showed resistance to PRSV-P. Transgenic plants containing viral coat protein constructs have also shown resistance to PRSV-P in field plantings.
In this paper, progress toward achieving PRSV-P resistance for papaya using both approaches is examined.
Authors
R. Drew, D. Persley, C. O’Brien, M. Bateson
Keywords
Transgenic, interspecific hybridisation, Vasconcellea quercifolia, Carica papaya
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