'Environmental risk assessment and field performance of rose (Rosahybrida) genetically modified for delphinidin production.'

Title: “Environmental risk assessment and field performance of rose (Rosahybrida) genetically modified for delphinidin production.”



Authors: Nakamura, Noriko; Fukuchi-Mizutani, Masako; Katsumoto, Yukihisa; Togami, Junichi; Senior, Mick; Matsuda, Yoshie; Furuichi, Keiji; Yoshimoto, Mie; Matsunaga, Akihiro; Ishiguro, Kanako; Aida, Mitsuhiro; Tasaka, Masao; Fukui, Hirokazu; Tsuda, Shinzo; Chandler, Steve; Tanaka, Yoshikazu.



Authors affiliation: Institute for Plant Science, Suntory Holdings Ltd., Mishima, Osaka, Japan.



Published in: Plant Biotechnology (Tokyo, Japan) (2011), 28(2), pages 251-261.



Abstract: “The release of genetically modified plants into the environment can only occur after permission is obtained from the relevant regulatory authorities. This permission will only be obtained after extensive risk assessment shows comparable risk of impact to the environment and biodiversity as compared to non-transgenic host plants. Two transgenic rose (Rosahybrida) lines, whose flowers were modified to a bluer color as a result of accumulation of delphinidin-based anthocyanins, have been trialed in greenhouses and the field in both Japan and Australia. Flower color modification was due to expression of genes of a viola flavonoid 3’,5’-hydroxylase and a torenia anthocyanin 5-acyltransferase. In all trials it was shown that the performance of the two transgenic lines, as measured by their growth characters, was comparable to the host untransformed variety. Biol. assay showed that the transgenic lines did not produce allelopathic compds. In Japan, seeds from wild rose species that had grown in close proximity to the transgenic roses did not carry either a Rosahybrida specific marker gene or the transgenes. In hybridization expts. using transgenic rose pollen and wild rose female parents, the transgenes were not detected in the seed obtained, though there was a low frequency of seed set. The transgene was also not transmitted when Rosahybrida cultivars were used as females. In in situ hybridization anal. transgene transcripts were only detected in the epidermal cells in the petals of the transgenic roses. In combination, the breeding and in situ anal. results show that the transgenic roses contain the transgene only in the L1 layer cells and not in the L2 layer cells that generate reproductive cells. General release permissions have been granted for both transgenic lines in Japan and one is now commerically produced.”

So Henry, if I’m reading this right, the blue color of these roses cannot be hybridized into offspring?

Thanks,

CM

I always wonder about blue, not because I think it looks good one roses, but because a whole new set of primary color can change others. Petunias and Iris are probably the most primary examples of this. Some are absolutely stunning, and some look like they belong back in the 80s lol