Shaping the biology of citrus: II. Genomic determinants of domestication

Abstract We performed genomic analyses on species and varieties of the genus Citrus to identify several determinants of domestication, based on the pattern of pummelo [Citrus maxima (Burr. f) Merr] and mandarin (Citrus reticulata Blanco) admixture into the ancestral genome, as well as population gen...

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Autores principales:	Daniel Gonzalez‐Ibeas, Victoria Ibanez, Estela Perez‐Roman, Carles Borredá, Javier Terol, Manuel Talon
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Plant culture SB1-1110 Genetics QH426-470
Acceso en línea:	https://doaj.org/article/598be16b0b4347fe8b279d7891365d67
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spelling	oai:doaj.org-article:598be16b0b4347fe8b279d7891365d672021-12-05T07:50:12ZShaping the biology of citrus: II. Genomic determinants of domestication1940-337210.1002/tpg2.20133https://doaj.org/article/598be16b0b4347fe8b279d7891365d672021-11-01T00:00:00Zhttps://doi.org/10.1002/tpg2.20133https://doaj.org/toc/1940-3372Abstract We performed genomic analyses on species and varieties of the genus Citrus to identify several determinants of domestication, based on the pattern of pummelo [Citrus maxima (Burr. f) Merr] and mandarin (Citrus reticulata Blanco) admixture into the ancestral genome, as well as population genetic tests at smaller scales. Domestication impacted gene families regulating pivotal components of citrus flavor (such as acidity) because in edible mandarin varieties, chromosome areas with negative Tajimas values were enriched with genes associated with the regulation of citric acid. Detection of sweeps in edible mandarins that diverged from wild relatives indicated that domestication reduced chemical defenses involving cyanogenesis and alkaloid synthesis, thus increasing palatability. Also, a cluster of SAUR genes in domesticated mandarins derived from the pummelo genome appears to contain candidate genes controlling fruit size. Similarly, conserved stretches of pure mandarin areas were likely important as well for domestication, as, for example, a fragment in chromosome 1 that is involved in the apomictic reproduction of most edible mandarins. Interestingly, our results also support the hypothesis that various genes subject to selective pressure during evolution or derived from whole genome duplication events later became potential targets of domestication.Daniel Gonzalez‐IbeasVictoria IbanezEstela Perez‐RomanCarles BorredáJavier TerolManuel TalonWileyarticlePlant cultureSB1-1110GeneticsQH426-470ENThe Plant Genome, Vol 14, Iss 3, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Plant culture SB1-1110 Genetics QH426-470
spellingShingle	Plant culture SB1-1110 Genetics QH426-470 Daniel Gonzalez‐Ibeas Victoria Ibanez Estela Perez‐Roman Carles Borredá Javier Terol Manuel Talon Shaping the biology of citrus: II. Genomic determinants of domestication
description	Abstract We performed genomic analyses on species and varieties of the genus Citrus to identify several determinants of domestication, based on the pattern of pummelo [Citrus maxima (Burr. f) Merr] and mandarin (Citrus reticulata Blanco) admixture into the ancestral genome, as well as population genetic tests at smaller scales. Domestication impacted gene families regulating pivotal components of citrus flavor (such as acidity) because in edible mandarin varieties, chromosome areas with negative Tajimas values were enriched with genes associated with the regulation of citric acid. Detection of sweeps in edible mandarins that diverged from wild relatives indicated that domestication reduced chemical defenses involving cyanogenesis and alkaloid synthesis, thus increasing palatability. Also, a cluster of SAUR genes in domesticated mandarins derived from the pummelo genome appears to contain candidate genes controlling fruit size. Similarly, conserved stretches of pure mandarin areas were likely important as well for domestication, as, for example, a fragment in chromosome 1 that is involved in the apomictic reproduction of most edible mandarins. Interestingly, our results also support the hypothesis that various genes subject to selective pressure during evolution or derived from whole genome duplication events later became potential targets of domestication.
format	article
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
title	Shaping the biology of citrus: II. Genomic determinants of domestication
title_short	Shaping the biology of citrus: II. Genomic determinants of domestication
title_full	Shaping the biology of citrus: II. Genomic determinants of domestication
title_fullStr	Shaping the biology of citrus: II. Genomic determinants of domestication
title_full_unstemmed	Shaping the biology of citrus: II. Genomic determinants of domestication
title_sort	shaping the biology of citrus: ii. genomic determinants of domestication
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/598be16b0b4347fe8b279d7891365d67
work_keys_str_mv	AT danielgonzalezibeas shapingthebiologyofcitrusiigenomicdeterminantsofdomestication AT victoriaibanez shapingthebiologyofcitrusiigenomicdeterminantsofdomestication AT estelaperezroman shapingthebiologyofcitrusiigenomicdeterminantsofdomestication AT carlesborreda shapingthebiologyofcitrusiigenomicdeterminantsofdomestication AT javierterol shapingthebiologyofcitrusiigenomicdeterminantsofdomestication AT manueltalon shapingthebiologyofcitrusiigenomicdeterminantsofdomestication
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Shaping the biology of citrus: II. Genomic determinants of domestication

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