title: Rewiring of jasmonate and phytochrome B signalling uncouples plant growth-defense tradeoffs.
abstract: Plants resist infection and herbivory with innate immune responses that are often associated with reduced growth. Despite the importance of growth-defense tradeoffs in shaping plant productivity in natural and agricultural ecosystems, the molecular mechanisms that link growth and immunity are poorly understood. Here, we demonstrate that growth-defense tradeoffs mediated by the hormone jasmonate are uncoupled in an Arabidopsis mutant (jazQ phyB) lacking a quintet of Jasmonate ZIM-domain transcriptional repressors and the photoreceptor phyB. Analysis of epistatic interactions between jazQ and phyB reveal that growth inhibition associated with enhanced anti-insect resistance is likely not caused by diversion of photoassimilates from growth to defense but rather by a conserved transcriptional network that is hardwired to attenuate growth upon activation of jasmonate signalling. The ability to unlock growth-defense tradeoffs through relief of transcription repression provides an approach to assemble functional plant traits in new and potentially useful ways.
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.
authors: Marcelo L
authors: ML
authors: Campos
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.
authors: Yuki
authors: Y
authors: Yoshida
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.
authors: Ian T
authors: IT
authors: Major
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.
authors: Dalton
authors: D
authors: de Oliveira Ferreira
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.|Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors: Sarathi M
authors: SM
authors: Weraduwage
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.|Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors: John E
authors: JE
authors: Froehlich
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.
authors: Brendan F
authors: BF
authors: Johnson
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.|Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors: David M
authors: DM
authors: Kramer
authors: Boyce Thompson Institute for Plant Research, Ithaca, New York 14853, USA.
authors: Georg
authors: G
authors: Jander
authors: Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors: Thomas D
authors: TD
authors: Sharkey
authors: Department of Energy-Plant Research Laboratory, East Lansing, Michigan 48824, USA.|Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors: Gregg A
authors: GA
authors: Howe
mesh_terms: D017360:Arabidopsis / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D003517:Cyclopentanes / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant / Q000502:physiology; D009154:Mutation; D054883:Oxylipins / Q000378:metabolism*; D051939:Phytochrome B / Q000235:genetics / Q000378:metabolism*; D057865:Plant Immunity / Q000502:physiology*; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology
chemical_list: D029681:Arabidopsis Proteins; D003517:Cyclopentanes; D054883:Oxylipins; C497952:PHYB protein, Arabidopsis; D012097:Repressor Proteins; D051939:Phytochrome B; C011006:jasmonic acid