Comparative Metabolomics and Molecular Phylogenetics of Melon (Cucumis melo, Cucurbitaceae) Biodiversity

A - Papers appearing in refereed journals

Ward, J. L., Moing, A., Allwood, J. W., Aharoni, A., Baker, J., Beale, M. H., Ben-Dor, S., Biais, B., Brigante, F., Burger, Y., Deborde, C., Erban, A., Faigenboim, A., Gur, A., Goodacre, R., Hansen, T. H., Jacob, D., Katzir, N., Kopka, J., Lewinsohn, E., Maucourt, M., Meir, S., Miller, S., Mumm, R., Oren, E., Paris, H. S., Rogachev, I., Rolin, D., Saar, U., Schjoerring, J. K., Tadmor, Y., Tzuri, G., Vos, R. C. D., Ward, J. L., Yeselson, E., Hall, R. D. and Schaffer, A. A. 2020. Comparative Metabolomics and Molecular Phylogenetics of Melon (Cucumis melo, Cucurbitaceae) Biodiversity. Metabolites. 10 (3), pp. 121-147.

AuthorsWard, J. L., Moing, A., Allwood, J. W., Aharoni, A., Baker, J., Beale, M. H., Ben-Dor, S., Biais, B., Brigante, F., Burger, Y., Deborde, C., Erban, A., Faigenboim, A., Gur, A., Goodacre, R., Hansen, T. H., Jacob, D., Katzir, N., Kopka, J., Lewinsohn, E., Maucourt, M., Meir, S., Miller, S., Mumm, R., Oren, E., Paris, H. S., Rogachev, I., Rolin, D., Saar, U., Schjoerring, J. K., Tadmor, Y., Tzuri, G., Vos, R. C. D., Ward, J. L., Yeselson, E., Hall, R. D. and Schaffer, A. A.
Abstract

The broad variability of Cucumis melo (melon, Cucurbitaceae) presents a challenge to conventional classification and organization within the species. To shed further light on the infraspecific relationships within C.melo, we compared genotypic and metabolomics similarities among 44 accessions representative of most of the cultivar-groups. Genotyping-by-sequencing(GBS)provided over 20,000 single-nucleotide polymorphisms(SNPs). Metabolomics data of the mature fruit flesh and rind provided over 80,000 metabolomics and elemental features via an orchestra of six complementary metabolomic platforms. These technologies probed polar, semi-polar, and non-polar metabolite fractions as well as a set of mineral elements and included both flavor- and taste-relevant volatile and non-volatile metabolites. Together these results enabled an estimate of “metabolomic/elemental distance” and its correlation with the genetic GBS distance of melon accessions. This study indicates that extensive and non-targeted metabolomics/elemental characterization produced classifications that strongly,but not completely,reflect the current and extensive genetic classification. Certain melon Groups, such as Inodorous, clustered in parallel with the genetic classifications while other genome to metabolome/element associations proved less clear. We suggest that the combined genomic, metabolic, and element data reflect the extensive sexual compatibility among melon accessions and the breeding history that has, for example, targeted metabolic quality traits, such as taste and flavor.

KeywordsGenetic resources; Melon; Genotype by sequencing; Elemental analysis; Metabolome; Cucumis melo
Year of Publication2020
JournalMetabolites
Journal citation10 (3), pp. 121-147
Digital Object Identifier (DOI)doi:10.3390/metabo10030121
Web address (URL)https://www.mdpi.com/2218-1989/10/3/121
Open accessPublished as bronze (free) open access
FunderEuropean Union
Publisher's version
Supplemental file
Output statusPublished
Publication dates
Online20 Mar 2020
Publication process dates
Accepted24 Mar 2020
PublisherMDPI
ISSN2218-1989

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