Sugarcane genome architecture decrypted with chromosome-specific oligo probes.

The Plant Journal : for Cell and Molecular Biology
Nathalie Piperidis, Angelique D'Hont

Abstract

Sugarcane (Saccharum spp.) is probably the crop with the most complex genome. Modern cultivars (2n = 100-120) are highly polyploids and aneuploids derived from interspecific hybridization between Saccharum officinarum (2n = 80) and Saccharum spontaneum (2n = 40-128). Chromosome-specific oligonucleotide probes were used in combination with genomic in situ hybridization to analyze the genome architecture of modern cultivars and representatives of their parental species. The results validated a basic chromosome number of x = 10 for S. officinarum. In S. spontaneum, rearrangements occurred from a basic chromosome of x = 10, probably in the Northern part of India, in two steps leading to x = 9 and then x = 8. Each step involved three chromosomes that were rearranged into two. Further polyploidization led to the wide geographical extension of clones with x = 8. We showed that the S. spontaneum contribution to modern cultivars originated from cytotypes with x = 8 and varied in proportion between cultivars (13-20%). Modern cultivars had mainly 12 copies for each of the first four basic chromosomes, and a more variable number for those basic chromosomes whose structure differs between the two parental species. One-four of these copies c...Continue Reading

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Citations

Feb 16, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kai P Voss-FelsBen J Hayes
Feb 28, 2021·Annals of Botany·Nicolas PompidorAngélique D'Hont
Feb 7, 2021·The Plant Journal : for Cell and Molecular Biology·Yongji HuangKai Wang
Mar 16, 2021·Journal of Agricultural and Food Chemistry·Pedro SilvaJosé S Câmara
Apr 28, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Seema YadavKai P Voss-Fels
Aug 10, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Fernanda de Oliveira BustamanteAna Christina Brasileiro-Vidal
Sep 14, 2021·Frontiers in Plant Science·Zhuang MengKai Wang
Oct 30, 2021·Frontiers in Genome Editing·Mehmet Tufan OzFredy Altpeter
Dec 25, 2021·Genome Research·Gabriel Rodrigues Alves MargaridoRobert James Henry

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