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Cytokinin production by Pseudomonas fluorescens G20-18 determines biocontrol activity against Pseudomonas syringae in Arabidopsis
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SYSNO ASEP 0459908 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Cytokinin production by Pseudomonas fluorescens G20-18 determines biocontrol activity against Pseudomonas syringae in Arabidopsis Tvůrce(i) Grosskinsky, D. K. (AT)
Tafner, R. (AT)
Moreno, M. V. (AR)
Stenglein, S. A. (AT)
Garcia de Salamone, I. E. (AR)
Nelson, L. M. (CA)
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Strnad, Miroslav (UEB-Q) RID, ORCID
van der Graaff, E. (AT)
Roitsch, Thomas (UEK-B) RID, ORCID, SAIZdroj.dok. Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 6, MAR 17 (2016), s. 23310Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova GROWTH-PROMOTING RHIZOBACTERIA ; PLANT-GROWTH ; SALICYLIC-ACID Vědní obor RIV EB - Genetika a molekulární biologie CEP LO1204 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA15-22322S GA ČR - Grantová agentura ČR LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEB-Q - RVO:61389030 ; RVO:67179843 - RVO:67179843 UT WOS 000372161000001 DOI 10.1038/srep23310 Anotace Plant beneficial microbes mediate biocontrol of diseases by interfering with pathogens or via strengthening the host. Although phytohormones, including cytokinins, are known to regulate plant development and physiology as well as plant immunity, their production by microorganisms has not been considered as a biocontrol mechanism. Here we identify the ability of Pseudomonas fluorescens G20-18 to efficiently control P. syringae infection in Arabidopsis, allowing maintenance of tissue integrity and ultimately biomass yield. Microbial cytokinin production was identified as a key determinant for this biocontrol effect on the hemibiotrophic bacterial pathogen. While cytokinin-deficient loss-of-function mutants of G20-18 exhibit impaired biocontrol, functional complementation with cytokinin biosynthetic genes restores cytokinin-mediated biocontrol, which is correlated with differential cytokinin levels in planta. Arabidopsis mutant analyses revealed the necessity of functional plant cytokinin perception and salicylic acid-dependent defence signalling for this biocontrol mechanism. These results demonstrate microbial cytokinin production as a novel microbe-based, hormone-mediated concept of biocontrol. This mechanism provides a basis to potentially develop novel, integrated plant protection strategies combining promotion of growth, a favourable physiological status and activation of fine-tuned direct defence and abiotic stress resilience. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2017
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