Fig. 1: Phenotypic divergence and karyotype evolution among Curcuma species.
From: Inversions encounter relaxed genetic constraints and balance birth and death of TPS genes in Curcuma
a Images of bract, floret, rhizome, and tuberous root of C. alismatifolia, C. petiolata, and C. longa. b Ancestral chromosomal reconstruction of Zingiberaceous species. Phylogeny was constructed based on 1791 single-copy orthologous genes. 11 pseudochromosomes of the common ancestor of Zingiberaceae were marked with different colors. It showed that modern species experienced at least dozens of chromosome fusion and fission events. The red dot represents the species of Zingiberaceae, the blue dot represents the species of Zingiberoideae, and the yellow dot represents the species of Curcuma. c A diagram showed the presence of inversions between haplotypes of C. petiolata and among the three Curcuma species. HapA: haplotype A; HapB: haplotype B. d Hi-C interaction signal validated an inversion between two haplotypes of Chromosome 20 in C. petiolata. e Percentage of the total length of inter-specific inversions between haplotypes from any two of the three Curcuma species.
