Rhizosphere microorganisms can influence the timing of plant flowering
Lu, Tao (Zhejiang University of Technology. College of Environment)
Ke, Mingjing (Zhejiang University of Technology. College of Environment)
Lavoie, Michel (Université Laval. Quebec-Ocean and Takuvik Joint International Research Unit)
Jin, Yujian (Zhejiang University of Technology. College of Environment)
Fan, Xiaoji (Zhejiang University of Technology. College of Environment)
Zhang, Zhenyan (Zhejiang University of Technology. College of Environment)
Fu, Zhengwei (Zhejiang University of Technology. College of Biotechnology and Bioengineering)
Sun, Liwei (Zhejiang University of Technology. College of Environment)
Gillings, Michael (Macquarie University. Department of Biological Sciences)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Qian, Haifeng (Chinese Academy of Sciences. Xinjiang Key Laboratory of Environmental Pollution and Bioremediation)
Zhu, Yong-Guan (Chinese Academy of Sciences. Key Lab of Urban Environment and Health, Institute of Urban Environment)

Fecha:	2018
Resumen:	Background:Plant phenology has crucial biological, physical, and chemical effects on the biosphere. Phenological drivers have largely been studied, but the role of plant microbiota, particularly rhizosphere microbiota, has not been considered. - Results: We discovered that rhizosphere microbial communities could modulate the timing of flowering of Arabidopsis thaliana. Rhizosphere microorganisms that increased and prolonged N bioavailability by nitrification delayed flowering by converting tryptophan to the phytohormone indole acetic acid (IAA), thus downregulating genes that trigger flowering, and stimulating further plant growth. The addition of IAA to hydroponic cultures confirmed this metabolic network. - Conclusions: We document a novel metabolic network in which soil microbiota influenced plant flowering time, thus shedding light on the key role of soil microbiota on plant functioning. This opens up multiple opportunities for application, from helping to mitigate some of the effects of climate change and environmental stress on plants (e. g. abnormal temperature variation, drought, salinity) to manipulating plant characteristics using microbial inocula to increase crop potential.
Ayudas:	European Commission 610028
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Rhizosphere ; Microbiota ; Root exudate ; Nitrogen ; Indole acetic acid ; Arabidopsis ; Flowering time
Publicado en:	Microbiome, Vol. 6 (December 2018) , art. 231, ISSN 2049-2618

DOI: 10.1186/s40168-018-0615-0
PMID: 30587246

12 p, 1.8 MB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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