Anatomical and physiological responses of four quinoa cultivars to salinity at seedling stage

Authors
Prado, Fernando Eduardo; Hilal, Mirna Beatriz; Albornoz, Patricia Liliana; Gallardo, Miriam; Ruíz, Verónica
Publication Year
2017
Language
English
Format
article
Status
Published version
Description
Premise of research. Salinity constitutes a stress factor that limits plants growth and development. It is known that salinity shows most damaging effects on plant development during the seedling stage. Therefore, comparison of salt tolerance among cultivars/varieties of crop species at seedling stage constitutes a very important topic to agricultural sustainability. Methodology. In this work, anatomical and physiological features of cotyledons and roots of four quinoa (Chenopodium quinoa) cultivars subjected to saline stress were analyzed. Pivotal results. There were no visible symptoms associated to salt damage. But several changes at both tissular and cellular organization levels were observed. Anatomical attributes of cotyledons (e.g. adaxial and abaxial stomatal area and density, palisade and spongy cell layers, and palisade cell density) and roots (root length and diameter, stele diameter and surface, and metaxylem vessel diameter) were differently affected by saline treatment among quinoa cultivars. Accumulation of compatible osmolites i.e. soluble sugars and proline showed different patterns in both cotyledons and roots of salt-treated seedlings. Conclusions. Anatomical and physiological results of this study permit establish that different strategies to face saline stress occurring at different combinations among quinoa cultivars, but conferring a similar fitness to cope salt toxicity and also survive under extreme conditions.
Fil: Prado, Fernando Eduardo. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Hilal, Mirna Beatriz. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Fil: Albornoz, Patricia Liliana. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina
Fil: Gallardo, Miriam. Fundación Miguel Lillo; Argentina
Fil: Ruíz, Verónica. Universidad Nacional del Litoral. Facultad de Cs.agrarias. Departamento de Producción Vegetal. Cátedra de Cultivos Extensivos; Argentina
Subject
COTYLEDON
PROLINE
QUINOA
ROOT
SALINITY
SUGARS
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Open access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/67112