Interaction of Culture Medium and Artificial Light Type on Pigmentation of Micro-Propagated Opuntia Plants

Author:

Silos Espino Hector1,Escalera García R.1,Moncada González D.1,Valera-Montero Luis L.1,Flores Benítez S.1,Ortiz Morales M.2,Guzmán Maldonado H. S.3,Escalante-Garcia Nivia4ORCID,Olvera-Gonzalez Ernesto4

Affiliation:

1. Laboratorio de Cultivo de Tejidos Vegetales, Tecnológico Nacional de México Campus El Llano, Carretera Aguascalientes-San Luis Potosí Km. 18, El Llano, Aguascalientes 20330, Mexico

2. Centro de Investigaciones en Óptica A.C., Unidad Aguascalientes, Prolongación Constitución 607, Reserva Loma Bonita, Aguascalientes 20200, Mexico

3. Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), con sede en el Campo Experimental Bajío (CEBAJ), Celaya, Guanajuato 36040, Mexico

4. Laboratorio de Iluminación Artificial (LIA), Tecnológico Nacional de México Campus Pabellón de Arteaga, Carretera a la Estación de Rincón Km. 1, Pabellón de Arteaga, Aguascalientes 20670, Mexico

Abstract

Opuntia is recognized economically as a significant crop for its nutritional, functional, and therapeutic properties and its potential in the pharmaceutical, cosmetic, and bioenergy industries. Opuntia is conventionally propagated by seed or vegetative propagation via rooted scions or grafting. However, multiplication procedures are insufficient for extensive spreading. One of the alternative techniques is in vitro. For this reason, the objective was to evaluate the growth of different components combined with light conditions to induce callus, embryogenesis, and the possible synthesis of a component in the genus Opuntia. The existence of genes involved in pigment synthesis in genotypes of different fruit colors was complementarily analyzed. In this study, we used different combinations of fructose (2 g/L) with prickly pear juice (2 mL/L), mannitol (4 g/L), silver nitrate (AgNO3: 1 mg/L), 2,4-dichlorophenoxyacetic acid (2,4-D: 2 mg/L), and indole-3-acetic acid (IAA: 1 g/L), with white, blue, and red LEDs (light-emitting diodes) and laser beams. These explants yielded sufficient contents of simple phenols, gallic acid equivalents (GAE: 2283.30 ± 6.29 mg/100 g), and coumaric (2155.0 ± 35.0 mg/100 g) and ferulic (2176 ± 27.9 mg/100 g) acids for the genotype Tapón aguanoso, and chlorogenic acid (CGA: 380.22 ± 22.05 mg/100 g) for the Copena V1 genotype. Upon analyzing the genotypes of different fruit pigmentations, we also observed the following: enzyme 4,5 estradiol dioxygenases can be present in all genotypes (regardless of pigmentation); enzyme 5,3 glucosyltransferases (GTs) could be induced in pigment synthesis in the genotypes of orange to purple fruits. Sequencing primer-amplified fragments for GT showed high similarity to uridine diphospho (UDP)-glucose from other species. This allows us to infer that it is possible to obtain products of high therapeutic value in the near future under controlled conditions.

Funder

Consejo Nacional de Ciencia y Tecnología (CONACYT) in Mexico

Publisher

MDPI AG

Subject

Horticulture,Plant Science

Reference24 articles.

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2. Agrupamiento de genotipos de nopal (Opuntia spp.) de México por medio de la técnica de AFLPs y características del fruto;Phyton (B. Aires),2014

3. Antioxidant Activities of Sicilian Prickly Pear (Opuntia ficus indica) Fruit Extracts and Reducing Properties of Its Betalains: Betanin and Indicaxanthin;Butera;J. Agric. Food Chem.,2002

4. Phenolic Composition, Antioxidant Capacity and in Vitro Cancer Cell Cytotoxicity of Nine Prickly Pear (Opuntia spp.) Juices;Plant Foods Hum. Nutr.,2009

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