Ren-Gang Zhang

Dec 7, 2024 | biorxiv.org | Ren-Gang Zhang |Hong-Yun Shang |Richard Milne |Fabricio Almeida-Silva

AbstractWith the explosive growth of whole-genome datasets, the accurate detection of orthologous synteny has become crucial for the reconstruction of evolutionary history. However, the currently available methods for the identification of orthologous synteny have great limitations: the methods are difficult to scale with varying polyploidy histories, and the accurate removal of out-paralogy is challenging.

Oct 16, 2024 | biorxiv.org | Yuan Wang |Zhiqing Xue |Ren-Gang Zhang |Elvira Hörandl

AbstractSex chromosome turnover has occurred in many groups, and is mediated by the translocation or duplication of apical sex-determining genes, or the replacement of original sex determination genes by new ones. In dioecious plants, the former frequently occurs, while the latter is rarely reported. Here, we assembled four haplotype-resolved chromosome-level genomes from four lineages of the Salix polyclona complex, including three diploids (E, E-TS, and W1) and one autotetraploid (W2).

Aug 12, 2024 | nature.com | Yi Wang |Ren-Gang Zhang |Elvira Hörandl |Tao Ma

AbstractPolyploidization presents an unusual challenge for species with sex chromosomes, as it can lead to complex combinations of sex chromosomes that disrupt reproductive development. This is particularly true for allopolyploidization between species with different sex chromosome systems. Here, we assemble haplotype-resolved chromosome-level genomes of a female allotetraploid weeping willow (Salix babylonica) and a male diploid S. dunnii.