Visualizing and Inferring Chromosome Segregation in the Pedigree of an Improved Banana Cultivar (Gold Finger) with Genome Ancestry Mosaic Painting

Cenci, Alberto; Martin, Guillaume; Breton, Catherine; D’Hont, Angélique; Yahiaoui, Nabila; Sardos, Julie; Rouard, Mathieu

doi:10.3390/horticulturae9121330

Cited by 2 publications

References 52 publications

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Painting the diversity of a world's favorite fruit: A next generation catalog of cultivated bananas

Sardos,

Cenci,

Martin

et al. 2024

Plants People Planet

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Societal Impact StatementBananas are nutritious fruits of major importance worldwide. Characterizing their diversity is essential to ensure their conservation and use. A catalog showcasing cultivated bananas genomic diversity was compiled and is to be used as a tool to support the classification of banana cultivars. This research revealed that cultivated banana groups are not all made of identical clones. Materials from recent collecting missions indicated that more banana diversity is expected to be found as the exploration of the banana gene pool continues. These discoveries will drive dynamic conservation strategies for banana genetic resources and should increase their use.Summary Banana is an important food crop cultivated in many tropical and subtropical regions around the world. Because banana cultivars often have low fertility, they are typically propagated clonally, which maintains desirable traits across generations. However, different factors, such as synonymy, incomplete passport data, and environmental effects, complicate the morphological‐based assignment of banana cultivars to specific clones or cultivar groups. In this study, we applied a previously developed genomic‐based tool for fine‐scale characterization of banana ancestry, known as in silico chromosome painting, to high‐throughput genotyping data from 317 banana accessions. This dataset covers most of the globally conserved, studied, and cultivated cultivar groups and includes both genebanks and new, uncharacterized materials. By comparing curated morphological assignation to the genomic patterns resulting from in silico chromosome painting, we compiled a diversity catalog referencing curated passport data, pictures, and chromosome painting patterns of the cultivar groups. Examining the genomic patterns obtained, intra‐cultivar group variability was discovered. In some cultivar groups, mitotic recombination or deletions accumulated clonally. In addition, at least four cultivar groups encompassed cultivars from distinct sexual events co‐existing, notably Pisang Awak with five distinct patterns across two ploidy levels. Finally, additional patterns were discovered in the newest materials of the set, showing that a wider diversity of clones still exists on farm.

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Painting the diversity of a world's favorite fruit: A next generation catalog of cultivated bananas

Sardos,

Cenci,

Martin

et al. 2024

Plants People Planet

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Painting the diversity of a world’s favourite fruit: A next generation catalogue of cultivated bananas

Sardos,

Cenci,

Martin

et al. 2024

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Societal impact statementBananas are nutritious fruits of major importance in the tropics and subtropics. Characterizing their diversity is essential to ensure their conservation and use. A catalogue showcasing cultivated bananas genomic diversity was compiled and is to be used as a tool to support the classification of banana cultivars. This research revealed that cultivated banana groups are not all made of identical clones. Materials from recent collecting missions indicated that more banana diversity is expected to be found as the exploration of the banana gene pool continues. These discoveries will drive dynamic conservation strategies for banana genetic resources and will increase their use.SummaryBanana is an important food crop cultivated in many tropical and subtropical regions around the world. Due to their low fertility, banana landraces are clonally propagated. However, different factors, such as synonymy and the effects of environment, make their assignment to described sets of clones, or cultivar groups, difficult. Consequently, passport data of accessions in genebanks is often uncomplete and sometimes inaccurate.With the recent advances in genomics, a new powerful tool was developed enabling the fine-scale characterization of banana’s ancestry along chromosomes, i.e.in silicochromosome painting. We applied this method to a high-throughput genotyping data set obtained from 317 banana accessions spanning most of the known cultivar groups. This set included both genebank and new uncharacterized materials.By comparing curated morphological assignation to the genomic patterns resulting fromin silicochromosome painting, we were able to compile a catalogue referencing the chromosome painting patterns of most of the described cultivar groups.Examining the genomic patterns obtained, we discovered intra-cultivar group variability. In some cultivar groups, mitotic recombination or deletions were clonally accumulated in cultivars. In addition, we identified at least 4 cultivar groups in which cultivars likely resulting from distinct sexual events co-existed, notably Pisang Awak in which 5 distinct genomic patterns of two ploidy levels were identified. New patterns were also discovered in the newest materials of the set, showing that a wider diversity of clones still existon farm.

show abstract

Visualizing and Inferring Chromosome Segregation in the Pedigree of an Improved Banana Cultivar (Gold Finger) with Genome Ancestry Mosaic Painting

Cited by 2 publications

References 52 publications

Painting the diversity of a world's favorite fruit: A next generation catalog of cultivated bananas

Painting the diversity of a world's favorite fruit: A next generation catalog of cultivated bananas

Painting the diversity of a world’s favourite fruit: A next generation catalogue of cultivated bananas

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