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A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”

The holm oak (Quercus ilex subsp. ballota) is the most representative species of the Mediterranean Basin and the agrosylvopastoral Spanish “dehesa” ecosystem. Being part of our life, culture, and subsistence since ancient times, it has significant environmental and economic importance. More recently...

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Autores principales: Rey, María-Dolores, Labella-Ortega, Mónica, Guerrero-Sánchez, Víctor M., Carleial, Rômulo, Castillejo, María Ángeles, Ruggieri, Valentino, Jorrín-Novo, Jesús V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613499/
https://www.ncbi.nlm.nih.gov/pubmed/37905231
http://dx.doi.org/10.3389/fmolb.2023.1242943
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author Rey, María-Dolores
Labella-Ortega, Mónica
Guerrero-Sánchez, Víctor M.
Carleial, Rômulo
Castillejo, María Ángeles
Ruggieri, Valentino
Jorrín-Novo, Jesús V.
author_facet Rey, María-Dolores
Labella-Ortega, Mónica
Guerrero-Sánchez, Víctor M.
Carleial, Rômulo
Castillejo, María Ángeles
Ruggieri, Valentino
Jorrín-Novo, Jesús V.
author_sort Rey, María-Dolores
collection PubMed
description The holm oak (Quercus ilex subsp. ballota) is the most representative species of the Mediterranean Basin and the agrosylvopastoral Spanish “dehesa” ecosystem. Being part of our life, culture, and subsistence since ancient times, it has significant environmental and economic importance. More recently, there has been a renewed interest in using the Q. ilex acorn as a functional food due to its nutritional and nutraceutical properties. However, the holm oak and its related ecosystems are threatened by different factors, with oak decline syndrome and climate change being the most worrying in the short and medium term. Breeding programs informed by the selection of elite genotypes seem to be the most plausible biotechnological solution to rescue populations under threat. To achieve this and other downstream analyses, we need a high-quality and well-annotated Q. ilex reference genome. Here, we introduce the first draft genome assembly of Q. ilex using long-read sequencing (PacBio). The assembled nuclear haploid genome had 530 contigs totaling 842.2 Mbp (N50 = 3.3 Mbp), of which 448.7 Mb (53%) were repetitive sequences. We annotated 39,443 protein-coding genes of which 94.80% were complete and single-copy genes. Phylogenetic analyses showed no evidence of a recent whole-genome duplication, and high synteny of the 12 chromosomes between Q. ilex and Quercus lobata and between Q. ilex and Quercus robur. The chloroplast genome size was 142.3 Kbp with 149 protein-coding genes successfully annotated. This first draft should allow for the validation of omics data as well as the identification and functional annotation of genes related to phenotypes of interest such as those associated with resilience against oak decline syndrome and climate change and higher acorn productivity and nutraceutical value.
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spelling pubmed-106134992023-10-30 A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa” Rey, María-Dolores Labella-Ortega, Mónica Guerrero-Sánchez, Víctor M. Carleial, Rômulo Castillejo, María Ángeles Ruggieri, Valentino Jorrín-Novo, Jesús V. Front Mol Biosci Molecular Biosciences The holm oak (Quercus ilex subsp. ballota) is the most representative species of the Mediterranean Basin and the agrosylvopastoral Spanish “dehesa” ecosystem. Being part of our life, culture, and subsistence since ancient times, it has significant environmental and economic importance. More recently, there has been a renewed interest in using the Q. ilex acorn as a functional food due to its nutritional and nutraceutical properties. However, the holm oak and its related ecosystems are threatened by different factors, with oak decline syndrome and climate change being the most worrying in the short and medium term. Breeding programs informed by the selection of elite genotypes seem to be the most plausible biotechnological solution to rescue populations under threat. To achieve this and other downstream analyses, we need a high-quality and well-annotated Q. ilex reference genome. Here, we introduce the first draft genome assembly of Q. ilex using long-read sequencing (PacBio). The assembled nuclear haploid genome had 530 contigs totaling 842.2 Mbp (N50 = 3.3 Mbp), of which 448.7 Mb (53%) were repetitive sequences. We annotated 39,443 protein-coding genes of which 94.80% were complete and single-copy genes. Phylogenetic analyses showed no evidence of a recent whole-genome duplication, and high synteny of the 12 chromosomes between Q. ilex and Quercus lobata and between Q. ilex and Quercus robur. The chloroplast genome size was 142.3 Kbp with 149 protein-coding genes successfully annotated. This first draft should allow for the validation of omics data as well as the identification and functional annotation of genes related to phenotypes of interest such as those associated with resilience against oak decline syndrome and climate change and higher acorn productivity and nutraceutical value. Frontiers Media S.A. 2023-10-12 /pmc/articles/PMC10613499/ /pubmed/37905231 http://dx.doi.org/10.3389/fmolb.2023.1242943 Text en Copyright © 2023 Rey, Labella-Ortega, Guerrero-Sánchez, Carleial, Castillejo, Ruggieri and Jorrín-Novo. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Molecular Biosciences
Rey, María-Dolores
Labella-Ortega, Mónica
Guerrero-Sánchez, Víctor M.
Carleial, Rômulo
Castillejo, María Ángeles
Ruggieri, Valentino
Jorrín-Novo, Jesús V.
A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title_full A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title_fullStr A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title_full_unstemmed A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title_short A first draft genome of holm oak (Quercus ilex subsp. ballota), the most representative species of the Mediterranean forest and the Spanish agrosylvopastoral ecosystem “dehesa”
title_sort first draft genome of holm oak (quercus ilex subsp. ballota), the most representative species of the mediterranean forest and the spanish agrosylvopastoral ecosystem “dehesa”
topic Molecular Biosciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613499/
https://www.ncbi.nlm.nih.gov/pubmed/37905231
http://dx.doi.org/10.3389/fmolb.2023.1242943
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