Abstract
Poplar trees are excellent varieties widely used for gardening and greening. However, their single color and floating fluffy seeds are major disadvantages. Plant species or varieties with variegated leaves are desperately needed to meet various demands for gardens, urban greening and landscape decoration, as they produce rich foliage colors that are aesthetically pleasing and functional. In this study, we generated a golden leaf triploid poplar (<i>P.</i> <i>alba</i> × <i>P. berlinensis</i>) by repressing the expression of <i>GLK</i> (<i>Golden2-like</i>) genes in leaves. The triploid golden leaf poplar had reduced chlorophyll content but almost no change in the growth rate. It has great potential in landscaping once it passes safety assessments.
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