Virus Resistant Papaya Research Paper

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Abram Umbras FES 435 - Fall 2017 Making Rainbows: Impacts of Virus Resistant Papaya Research and Developement For roughly 30 years the Puna District of Hawaii had been a safe haven from the devastating effects of the papaya ringspot virus (PRSV). Suddenly, in the early nineties, 95% of Hawaii's second largest crop became threatened when PRSV arrived in the Puna District (Gonsalves et al. 1998). Researchers at the University of Hawaii and Cornell University had anticipated that this day would come, so in preparation they began developing a PRSV resistant papaya using newly developed genetic engineering techniques. The initial fruit of their labors was "SunUp", a transgenic papaya created using biolistics to insert the coat protein genes from PRSV into a non-transgenic variety of papaya known as "Sunset". As a result of the insertion, SunUp has resistance to PRSV. The next step was "Rainbow", an F1-hybrid derived by crossing the transgenic SunUp papaya with the non-transgenic "Kapoho" papaya. Rainbow combines the PRSV resistance of its transgenic parent with the yellow flesh, preferred by consumers, of its non-transgenic parent. Impact …show more content…

1998). From 1992 to 1998 5 of the 8 packing houses in hawaii ceased operations(Gonsalves 2006). The process of deregulation and commercialization of Rainbow and SunUp began in 1995. However, farmers would have to wait another three years for this process to complete before they could start planting transgenic seed. The new seeds were often planted near or within infected fields but the resistance held up (Gonsalves 2006). By 1999, healthy fields of rainbow largely supplanted the common scenes of dead and sickly fields of Kapoho that characterized the period between 1994-1998 in

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