Artículo
A light-dependent molecular link between competition cues and defence responses in plants
Fernández Milmanda, Guadalupe Lucía
; Crocco, Carlos Daniel
; Reichelt, Michael; Mazzaro, Carlos Alberto
; Köllner, Tobias G.; Zhang, Tong; Cargnel, Miriam Dora; Lichy, Micaela Zoe
; Fiorucci, Anne Sophie; Fankhauser, Christian; Koo, Abraham J.; Austin, Amy Theresa
; Gershenzon, Jonathan; Ballare, Carlos Luis
Fecha de publicación:
03/2020
Editorial:
Nature
Revista:
Nature Plants
ISSN:
2055-0278
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Growth responses to competition1 and defence responses to the attack of consumer organisms2 are two classic examples of adaptive phenotypic plasticity in plants. However, the mechanistic and functional links between these responses are not well understood. Jasmonates, a family of lipid-derived signals, are potent growth inhibitors and central regulators of plant immunity to herbivores and pathogens3,4, with both roles being evolutionarily conserved from bryophytes5 to angiosperms6. When shade-intolerant plants perceive the proximity of competitors using the photoreceptor phytochrome B, they activate the shade-avoidance syndrome and downregulate jasmonate responses7. Despite the central implications of this light-mediated change in the growth/defence balance for plant adaptation and crop yield8,9, the mechanisms by which photoreceptors relay light cues to the jasmonate signalling pathway remain poorly understood10. Here, we identify a sulfotransferase (ST2a) that is strongly upregulated by plant proximity perceived by phytochrome B via the phytochrome B–phytochrome interacting factor signalling module. By catalysing the formation of a sulfated jasmonate derivative, ST2a acts to reduce the pool of precursors of active forms of jasmonates and represents a direct molecular link between photoreceptors and hormone signalling in plants. The metabolic step defined by this enzyme provides a molecular mechanism for prioritizing shade avoidance over defence under intense plant competition.
Palabras clave:
PHYTOCHROME
,
JASMONATES
,
GROWTH-DEFENSE TRADEOFF
,
ARABIDOPSIS
Archivos asociados
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Identificadores
Colecciones
Articulos (IIBIO)
Articulos de INSTITUTO DE INVESTIGACIONES BIOTECNOLOGICAS
Articulos de INSTITUTO DE INVESTIGACIONES BIOTECNOLOGICAS
Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Fernández Milmanda, Guadalupe Lucía; Crocco, Carlos Daniel; Reichelt, Michael; Mazzaro, Carlos Alberto; Köllner, Tobias G.; et al.; A light-dependent molecular link between competition cues and defence responses in plants; Nature; Nature Plants; 6; 3; 3-2020; 223-230
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