We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Transgene-mediated resistance to <italic>Papaya ringspot virus</italic>: challenges and solutions.
- Authors
Hamim, Islam; Borth, Wayne B.; Marquez, Josiah; Green, James C.; Melzer, Michael J.; Hu, John S.
- Abstract
Global papaya production is severely affected by papaya ringspot disease caused by <italic>Papaya ringspot virus</italic> (PRSV). Management of this potyvirus is challenging, due to 1) its non-persistent transmission by numerous aphid species and 2) the diversity of PRSV strains that exists within a country or between different geographical regions. Papaya cultivars with transgenic resistance have reduced the impact of the disease. There are no effective alternatives to transgenic resistance available in areas where disease pressure is high. In Hawaii, transgenic papayas such as “SunUp” and “Rainbow” have remained resistant to PRSV more than two decades saving the commercial papaya industry. Following the success in Hawaii, researchers from other countries have focused on developing PRSV-resistant transgenic papaya. These transgenic cultivars often demonstrated an initial transitory resistance that was ultimately overcome by the virus. For other cases, resistance was inconsistent. That is, some transgenic lines were resistant while others were not. Transgenic cultivars are now losing PRSV-resistance for various reasons in China and Taiwan. In this review, we present an update on work with transgenic papaya with resistance to PRSV. The focus is on factors affecting transgenic resistance in papaya and our attempt to explain why the Hawaiian scenario of complete and durable resistance has not been replicated in other regions. The utilization of more recent technologies to the development of virus resistance in papaya is also discussed.
- Subjects
TRANSGENES; PAPAYA ringspot virus; PAPAYA ringspot disease; PAPAYA growing; DISEASE resistance of plants
- Publication
Phytoparasitica, 2018, Vol 46, Issue 1, p1
- ISSN
0334-2123
- Publication type
Article
- DOI
10.1007/s12600-017-0636-4