Editorial: Functional genomics in fruit trees: from 'omics to sustainable biotechnologies, volume II

"The Research Topic collects 10 manuscripts focused on cutting-edge topics infunctional genomics of fruit trees, that can be grouped into three main themes:advancements in genome editing technologies, availability of tools and approaches forunderstanding gene family structure and function, and study of gene regulation throughlong non-coding RNA (lncRNA), transgenesis, and transcriptomic analysis (Figure 1). Thefirst set of manuscripts showcases perspectives and limitations of transgene-free genomeediting in fruit trees, the use of CRISPR/Cas9 constructs for the reduction of stomataldensity in grapevine, and the generation of edited citrus varieties enriched in antioxidantcompounds. A second group describes the use of comparative gene family analysis tools, ofnovel workflows for the Rosaceae, the creation of a comprehensive platform for germplasminnovation and functional genomics in Macadamia, and the construction of a high-densitygenetic linkage map to identify genetic loci responsible for seedlessness in mandarin. Thethird set of articles includes studies on citrus focused on the role of lncRNA in response toHuanglongbing (HLB), the fruit-specific expression of Ruby to improve anthocyaninaccumulation, and the exploitation of the transcriptome relating to growth and palatability."