The
CCT gene family is present in plants and is involved in biological processes such as flowering, circadian rhythm regulation, plant growth and development, and stress resistance. We identified 87, 62, 46, and 40
CCTs at the whole-genome level in
B. napus
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The
CCT gene family is present in plants and is involved in biological processes such as flowering, circadian rhythm regulation, plant growth and development, and stress resistance. We identified 87, 62, 46, and 40
CCTs at the whole-genome level in
B. napus,
B. rapa,
B. oleracea, and
A. thaliana, respectively. The
CCTs can be classified into five groups based on evolutionary relationships, and each of these groups can be further subdivided into three subfamilies (
COL,
CMF, and
PRR) based on function. Our analysis of chromosome localization, gene structure, collinearity, cis-acting elements, and expression patterns in
B. napus revealed that the distribution of the 87
BnaCCTs on the chromosomes of
B. napus was uneven. Analysis of gene structure and conserved motifs revealed that, with the exception of a few genes that may have lost structural domains, the majority of genes within the same group exhibited similar structures and conserved domains. The gene collinearity analysis identified 72 orthologous genes, indicating gene duplication and expansion during the evolution of
BnaCCTs. Analysis of cis-acting elements identified several elements related to abiotic and biotic stress, plant hormone response, and plant growth and development in the promoter regions of
BnaCCTs. Expression pattern and protein interaction network analysis showed that
BnaCCTs are differentially expressed in various tissues and under stress conditions. The
PRR subfamily genes have the highest number of interacting proteins, indicating their significant role in the growth, development, and response to abiotic stress of
B. napus.
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