Invited Mini Review
On the cover: Advances in genome editing technology offer new hope for modifying traits in polyploid plants, especially those which lack whole genome information, such as Chrysanthemum morifolium (chrysanthemum) - a commercially important hexaploid plant that is propagated asexually worldwide. Kishi-Kaboshi et al. performed genome editing in transgenic chrysanthemums containing multiple copies of a fluorescent protein gene. They found that one genome-editing event was able to introduce mutations in several copies of the transgene, with mutations accumulating in vegetatively-propagated shoots and regenerated calli. Through this approach, multi-allelic genes, and thus polyploid plant traits, can be modified successfully.
The cover image shows fluorescence by transgenic chrysanthemum flowers expressing the yellowish-green fluorescent protein gene from Chiridius poppei (CpYGFP) (top), and three young shoots (bottom) are CpYGFP-chrysanthemum (left), partially mutagenized genome-edited CpYGFP-chrysanthemum (center), and wild type chrysanthemum (right). Images supplied by M. Kishi-Kaboshi and K. Sasaki (National Agriculture and Food Research Organization, Japan).
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