Artículo
Beyond toxicity: A regulatory role for mitochondrial cyanide
Autor/es | García Domínguez, Irene
Gotor Martínez, Cecilia Romero González, Luis Carlos |
Fecha de publicación | 2014 |
Fecha de depósito | 2018-01-29 |
Publicado en |
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Resumen | In non-cyanogenic plants, cyanide is a co-product of ethylene and camalexin biosynthesis. To maintain cyanide at non-toxic levels, Arabidopsis plants express the mitochondrial β-cyanoalanine synthase CYS-C1. CYS-C1 knockout ... In non-cyanogenic plants, cyanide is a co-product of ethylene and camalexin biosynthesis. To maintain cyanide at non-toxic levels, Arabidopsis plants express the mitochondrial β-cyanoalanine synthase CYS-C1. CYS-C1 knockout leads to an increased level of cyanide in the roots and leaves and a severe defect in root hair morphogenesis, suggesting that cyanide acts as a signaling factor in root development. During compatible and incompatible plant-bacteria interactions, cyanide accumulation and CYS-C1 gene expression are negatively correlated. Moreover, CYS-C1 mutation increases both plant tolerance to biotrophic pathogens and their susceptibility to necrotrophic fungi, indicating that cyanide could stimulate the salicylic acid-dependent signaling pathway of the plant immune system. We hypothesize that CYS-C1 is essential for maintaining non-toxic concentrations of cyanide in the mitochondria to facilitate cyanide’s role in signaling. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Identificador del proyecto | BIO2010-15201
CSD2007–00057 CVI-7190 |
Cita | García Domínguez, I., Gotor Martínez, C. y Romero González, L.C. (2014). Beyond toxicity: A regulatory role for mitochondrial cyanide. Plant signaling & behavior, 9 |
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