Shaping the biology of citrus: I. Genomic determinants of evolution

Abstract We performed genomic analyses on wild species of the genus Citrus to identify major determinants of evolution. The most notable effect occurred on the pathogen‐defense genes, as observed in many other plant genera. The gene space was also characterized by changes in gene families intimately...

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Main Authors: Daniel Gonzalez‐Ibeas, Victoria Ibanez, Estela Perez‐Roman, Carles Borredá, Javier Terol, Manuel Talon
Format: Article
Language:English
Published: Wiley 2021-11-01
Series:The Plant Genome
Online Access:https://doi.org/10.1002/tpg2.20104
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author Daniel Gonzalez‐Ibeas
Victoria Ibanez
Estela Perez‐Roman
Carles Borredá
Javier Terol
Manuel Talon
author_facet Daniel Gonzalez‐Ibeas
Victoria Ibanez
Estela Perez‐Roman
Carles Borredá
Javier Terol
Manuel Talon
author_sort Daniel Gonzalez‐Ibeas
collection DOAJ
description Abstract We performed genomic analyses on wild species of the genus Citrus to identify major determinants of evolution. The most notable effect occurred on the pathogen‐defense genes, as observed in many other plant genera. The gene space was also characterized by changes in gene families intimately related to relevant biochemical properties of citrus fruit, such as pectin modifying enzymes, HDR (4‐hydroxy‐3‐methylbut‐2‐enyl diphosphate reductase) genes, and O‐methyltransferases. Citrus fruits are highly abundant on pectins and secondary metabolites such as terpenoids and flavonoids, the targets of these families. Other gene types under positive selection, expanded through tandem duplications and retained as triplets from whole genome duplications, codified for purple acid phosphatases and MATE‐efflux proteins. Although speciation has not been especially rapid in the genus, analyses of selective pressure at the codon level revealed that the extant species evolved from the ancestral citrus radiation show signatures of pervasive adaptive evolution and is therefore potentially responsible for the vast phenotypic differences observed among current species.
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spelling doaj.art-a00405f2c1814db1b85c26783573874a2022-12-21T22:54:10ZengWileyThe Plant Genome1940-33722021-11-01143n/an/a10.1002/tpg2.20104Shaping the biology of citrus: I. Genomic determinants of evolutionDaniel Gonzalez‐Ibeas0Victoria Ibanez1Estela Perez‐Roman2Carles Borredá3Javier Terol4Manuel Talon5Instituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainInstituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainInstituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainInstituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainInstituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainInstituto Valenciano de Investigaciones Agrarias (IVIA) Carretera Moncada CV‐315, Km 10 Valencia 46113 SpainAbstract We performed genomic analyses on wild species of the genus Citrus to identify major determinants of evolution. The most notable effect occurred on the pathogen‐defense genes, as observed in many other plant genera. The gene space was also characterized by changes in gene families intimately related to relevant biochemical properties of citrus fruit, such as pectin modifying enzymes, HDR (4‐hydroxy‐3‐methylbut‐2‐enyl diphosphate reductase) genes, and O‐methyltransferases. Citrus fruits are highly abundant on pectins and secondary metabolites such as terpenoids and flavonoids, the targets of these families. Other gene types under positive selection, expanded through tandem duplications and retained as triplets from whole genome duplications, codified for purple acid phosphatases and MATE‐efflux proteins. Although speciation has not been especially rapid in the genus, analyses of selective pressure at the codon level revealed that the extant species evolved from the ancestral citrus radiation show signatures of pervasive adaptive evolution and is therefore potentially responsible for the vast phenotypic differences observed among current species.https://doi.org/10.1002/tpg2.20104
spellingShingle Daniel Gonzalez‐Ibeas
Victoria Ibanez
Estela Perez‐Roman
Carles Borredá
Javier Terol
Manuel Talon
Shaping the biology of citrus: I. Genomic determinants of evolution
The Plant Genome
title Shaping the biology of citrus: I. Genomic determinants of evolution
title_full Shaping the biology of citrus: I. Genomic determinants of evolution
title_fullStr Shaping the biology of citrus: I. Genomic determinants of evolution
title_full_unstemmed Shaping the biology of citrus: I. Genomic determinants of evolution
title_short Shaping the biology of citrus: I. Genomic determinants of evolution
title_sort shaping the biology of citrus i genomic determinants of evolution
url https://doi.org/10.1002/tpg2.20104
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