Yunn Thet Paing

Data availability All haploid transformant strains (Table 1) will be made available through the Chlamydomonas Resource Center (https://www.chlamycollection.org/, Lefebvre et al., 2019).

Data availability The RNA-Seq 3′ QuantSeq data generated in this study are available in the NCBI Sequence Read Archive (SRA) under the accession no. PRJNA1145893.

Abstract Whole genome duplications, widely observed in plant lineages, have significant evolutionary and ecological impacts. Yet, our current understanding of the direct implications of ploidy shifts on short- and long-term plant evolution remains fragmentary, necessitating further investigations across multiple ploidy levels.