3D Genome Folding Revolved the Largest Cotton Genome in Gossypium rotundifolium (K2)
Alagarsamy Manivannan
ICAR-Central Institute for Cotton Research, Regional Station, Coimbatore, Tamil Nadu (641 003), India
DOI: NIL
Keywords: Cotton, Diploid, K genome, Sequencing
Abstract
The genome's complex, dynamic, and three-dimensional (3D) organization is essential for controlling gene expression. The polyploidy in cotton shows a significant level of complexity in transcriptional regulation, suggesting the existence of complex higher-order chromatin structures. Among the genome of Gossypium species, K2 genome are distinct by having the largest genome size. Gossypium rotundifolium, is the wild diploid cotton, belongs to the member of K genome. The 3D genome arrangement of G. rotundifolium that contributes to 2.44 Gb genome size and a high degree of gene synteny with A and D genomes. Transposable elements have the potential to affect the expansion of genome size, in comparison to the D5 genome, affecting the regulatory relationships between non-coding areas and the transcription of coding genes in the K2 and A2 genomes. These genome size variations render it a valuable model for exploring the 3D genome evolution and transcriptional regulation in cotton.
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Reference
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