Repositorio UFRO · Omeka S

Molecular regulation of aluminum resistance and sulfur nutrition during root growth

Primer Autor	Reyes-Diaz, Marjorie
Co-autores	Alarcon-Poblete, Edith#Inostroza-Blancheteau, Claudio#Alberdi, Miren#Rengel, Zed
Título	Molecular regulation of aluminum resistance and sulfur nutrition during root growth
Editorial	SPRINGER
Revista	PLANTA
Lenguaje	en
Resumen	Aluminum toxicity and sulfate deprivation both regulate microRNA395 expression, repressing its low-affinity sulfate transporter ( SULTR2,1 ) target. Sulfate deprivation also induces the high-affinity sulfate transporter gene ( SULTR12 ), allowing enhanced sulfate uptake. Few studies about the relationships between sulfate, a plant nutrient, and aluminum, a toxic ion, are available, hence, the molecular and physiological processes underpinning this interaction are poorly understood. The Al-sulfate interaction occurs in acidic soils, whereby relatively high concentrations of trivalent toxic aluminum (Al3+) may hamper root growth, limiting uptake of nutrients, including sulfur (S). On the other side, Al3+ may be detoxified by complexation with sulfate in the acid soil solution as well as in the root-cell vacuoles. In this review, we focus on recent insights into the mechanisms governing plant responses to Al toxicity and its relationship with sulfur nutrition, emphasizing the role of phytohormones, microRNAs, and ion transporters in higher plants. It is known that Al3+ disturbs gene expression and enzymes involved in biosynthesis of S-containing cysteine in root cells. On the other hand, Al3+ may induce ethylene biosynthesis, enhance reactive oxygen species production, alter phytohormone transport, trigger root growth inhibition and promote sulfate uptake under S deficiency. MicroRNA395, regulated by both Al toxicity and sulfate deprivation, represses its low-affinity Sulfate Transporter 2,1 (SULTR2,1) target. In addition, sulfate deprivation induces High Affinity Sulfate Transporters (HAST, SULTR1,2), improving sulfate uptake from low-sulfate soil solutions. Identification of new microRNAs and cloning of their target genes are necessary for a better understanding of the role of molecular regulation of plant resistance to Al stress and sulfate deprivation.
Tipo de Recurso	Artículo de revisión
Description	FONDECYT Project 11080231 and 11160355, MECESUP FRO 0601 and UFRO fellowships. Proyecto FONDECYT 11080231 y 11160355, Becas MECESUP FRO 0601 y UFRO.
doi	10.1007/s00425-017-2805-6
Formato Recurso	pdf
Palabras Claves	Al transporters# Gene regulation# Ion toxicity# MicroRNA# Nutrient deficiency# S transporters
Ubicación del archivo	http://dx.doi.org/10.1007/s00425-017-2805-6
Categoría OCDE	Plant Sciences
Materias	Todos los transportadores# Regulación genética# Toxicidad iónica# microARN# Deficiencia de nutrientes# transportadores S
Disciplinas de la OCDE	Agronomía Biología Molecular Otras Ciencias Agrícolas
Id de Web of Science	WOS:000419584800002
Título de la cita (Recomendado-único)	Molecular regulation of aluminum resistance and sulfur nutrition during root growth
Identificador del recurso (Mandatado-único)	Artículo de revisión
Versión del recurso (Recomendado-único)	version publicada
Editorial	SPRINGER
Revista/Libro	PLANTA
Categoría WOS	Ciencias de las plantas
ISSN	0032-0935
Idioma	en
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID FONDECYT 11080231#ANID FONDECYT 11160355#MECESUP FRO 0601# UFRO ANID FONDECYT 11080231 ANID FONDECYT 11160355 UFRO MECESUP FRO 0601
Descripción	FONDECYT Project 11080231 and 11160355, MECESUP FRO 0601 and UFRO fellowships.
Formato	pdf
Tipo de ruta	hibrida
Access Rights	restringido
Derechos de acceso	restringido
Página de inicio (Recomendado-único)	6944
Página final (Recomendado-único)	6975