Identification of slope genes that differ from intercept genes
The genetic basis of SOC variation in B. napus has been
deciphered through genome- and transcriptome-wide association studies,
leading to the identification of numerous genomic regions and/or genes
associated with this trait (Tang et al., 2021). In our study, we
identified the same set of significant genomic regions when using
intercept as the phenotype. Notably, when we used slope as the phenotype
and conducted GWAS, we discovered five genes homologous to theArabidopsis genes MYB106 , MIPS3 , HAD ,DGD1 and PSD1 known to be involved in oil metabolism.
Moreover, these genes interact with the identified environmental indices
and exhibits dynamic effects in response to changes in these indices.
The findings highlight the complex interplay between genes and the
environment and offer new insights into the genetic basis of SOC
variation from the perspective of phenotypic plasticity.