Hormonal modulation of photomorphogenesis-controlles anthocyanin accumulation in tomato (Solanum lycopersicum L. cv Micro-Tom) hypocotyls: physiological and genetic studies.

CARVALHO, R. F.; QUECINI, V.; PERES, L. E. P.

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DC Field	Value	Language
dc.contributor.author	CARVALHO, R. F.	pt_BR
dc.contributor.author	QUECINI, V.	pt_BR
dc.contributor.author	PERES, L. E. P.	pt_BR
dc.date.accessioned	2019-11-02T00:37:47Z	-
dc.date.available	2019-11-02T00:37:47Z	-
dc.date.created	2010-06-14
dc.date.issued	2010
dc.identifier.citation	Plant Science, Limerick, v. 178, n. 3, p. 258-264, mar. 2010.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/854948	-
dc.description	Hormones are likely to be important factors modulating the light-dependent anthocyanin accumulation. Here we analyzed anthocyanin contents in hypocotyls of near isogenic Micro-Tom (MT) tomato lines carrying hormone and phytochrome mutations, as single and double-mutant combinations. In order to recapitulate mutant phenotype, exogenous hormone applications were also performed. Anthocyanin accumulation was promoted by exogenous abscisic acid (ABA) and inhibited by gibberellin (GA), in accordance to the reduced anthocyanin contents measured in ABA-deficient (notabilis) and GA-constitutive response (procera) mutants. Exogenous cytokinin also enhanced anthocyanin levels in MT hypocotyls. Although auxin-insensitive diageotropica mutant exhibited higher anthocyanin contents, pharmacological approaches employing exogenous auxin and a transport inhibitor did not support a direct role of the hormone in anthocyanin accumulation. Analysis of mutants exhibiting increased ethylene production (epinastic) or reduced sensitivity (Never ripe), together with pharmacological data obtained from plants treated with the hormone, indicated a limited role for ethylene in anthocyanin contents. Phytochrome-deficiency (aurea) and hormone double-mutant combinations exhibited phenotypes suggesting additive or synergistic interactions, but not fully espistatic ones, in the control of anthocyanin levels in tomato hypocotyls. Our results indicate that phytochrome-mediated anthocyanin accumulation in tomato hypocotyls is modulated by distinct hormone classes via both shared and independent pathways.	pt_BR
dc.language.iso	por	pt_BR
dc.rights	openAccess	pt_BR
dc.subject	Fitocromo	pt_BR
dc.title	Hormonal modulation of photomorphogenesis-controlles anthocyanin accumulation in tomato (Solanum lycopersicum L. cv Micro-Tom) hypocotyls: physiological and genetic studies.	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2019-11-02T00:37:47Z
dc.subject.thesagro	Tomate	pt_BR
dc.subject.thesagro	Biologia	pt_BR
dc.subject.thesagro	Genética	pt_BR
dc.subject.thesagro	Antocianina	pt_BR
dc.subject.thesagro	Hipocótilo	pt_BR
dc.subject.thesagro	Hormônio	pt_BR
dc.subject.thesagro	Mutação	pt_BR
riaa.ainfo.id	854948	pt_BR
riaa.ainfo.lastupdate	2019-11-01
dc.identifier.doi	10.1016/j.plantsci.2010.01.013	pt_BR
dc.contributor.institution	ROGÉRIO FALLEIROS CARVALHO, ESALQ/USP; VERA MARIA QUECINI, CNPUV; LÁZARO EUSTÁQUIO PEREIRA PERES, ESALQ/USP.	pt_BR
Appears in Collections:	Artigo em periódico indexado (CNPUV)

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