title: Low-temperature conditioning of "seed" cloves enhances the expression of phenolic metabolism related genes and anthocyanin content in 'Coreano' garlic (Allium sativum) during plant development.
abstract: Low-temperature conditioning of garlic "seed" cloves accelerated the development of the crop cycle, decreased plant growth, and increased the synthesis of phenolic compounds and anthocyanins in the outer scale leaves of the bulbs at harvest time, leading to 3-fold content increase compared with those conditioned at room temperature. Cold conditioning of "seed" cloves also altered the anthocyanin profile during bulb development and at harvest. Two new anthocyanins are reported for the first time in garlic. The high phenolics and anthocyanin contents in bulbs of plants generated from "seed" cloves conditioned at 5 °C for 5 weeks were preceded by overexpression of some putative genes of the phenolic metabolism [6-fold for phenylalanine ammonia lyase (PAL)] and anthocyanin synthesis [1-fold for UDP-sugar:flavonoid 3-O-glycosyltransferase (UFGT)] compared with those conditioned at room temperature.
authors.affiliation: Departamento de Investigación y Posgrado en Alimentos, Universidad Autónoma de Querétaro , Querétaro 76010, Mexico.
authors.forename: Miguel D
authors.initials: MD
authors.lastname: Dufoo-Hurtado
authors.forename: Karla G
authors.initials: KG
authors.lastname: Zavala-Gutiérrez
authors.forename: Cong-Mei
authors.initials: CM
authors.lastname: Cao
authors.forename: Luis
authors.initials: L
authors.lastname: Cisneros-Zevallos
authors.forename: Ramón G
authors.initials: RG
authors.lastname: Guevara-González
authors.forename: Irineo
authors.initials: I
authors.lastname: Torres-Pacheco
authors.forename: M Estela
authors.initials: ME
authors.lastname: Vázquez-Barrios
authors.forename: Dulce M
authors.initials: DM
authors.lastname: Rivera-Pastrana
authors.forename: Edmundo M
authors.initials: EM
authors.lastname: Mercado-Silva
mesh_terms: D000872:Anthocyanins / Q000096:biosynthesis / Q000737:chemistry*; D003080:Cold Temperature; D005737:Garlic / Q000737:chemistry / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D010636:Phenols / Q000737:chemistry / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D012639:Seeds / Q000737:chemistry / Q000201:enzymology / Q000235:genetics / Q000254:growth & development; D013696:Temperature
chemical_list: D000872:Anthocyanins; D010636:Phenols; D010940:Plant Proteins