A decade ago  the possibility of using Cas9 systems to impart desirable properties to oranges seemed within reach . Antifungals like Imazalil can increase shelf life of citrus but are known to disrupt hormones and are perhaps carcinogenic . A more recent article suggests that Cas9 is in fact being used to overcome "biotic stresses". Problems like citrus greening, black spot, and penicillium cost growers a lot and GM seems preferable to the chemicals mentioned in .
Does anyone actually know how citrus is currently preserved in the U.S.? Are both fungicides or GM at work? Neither? Both?
 A Jia H, Wang N. Targeted Genome Editing of Sweet Orange Using Cas9/sgRNA. Prasad M, editor. PLoS ONE. 2014 [accessed 2023 Jun 6];9(4):e93806. https://dx.plos.org/10.1371/journal.pone.0093806. doi:10.1371/journal.pone.0093806
 Temkin et al., Hormone-disrupting fungicides found on most citrus fruit samples tested by EWG, found online in Shoppeer's Guide to Pesticides on Produce, March 2023, https://www.ewg.org/foodnews/citrus.php.
 Tanwir, S.E., Soares, J.M., Welker, S., Grosser, J.W., Dutt, M. (2021). Genetically Modified Citrus: Current Status, Prospects, and Future Challenges. In: Kavi Kishor, P.B., Rajam, M.V., Pullaiah, T. (eds) Genetically Modified Crops. Springer, Singapore. https://doi.org/10.1007/978-981-15-5932-7_7