Synergistic interactions between the ACC deaminase-producing bacterium Pseudomonas putida UW4 and the AM fungus Gigaspora rosea positively affect cucumber plant growth

FEMS Microbiology Ecology
E GamaleroG Lingua

Abstract

Bacteria producing 1-aminocyclopropane-1-carboxylate (ACC) deaminase modulate plant ethylene levels. Decreased ethylene levels increase plant tolerance to environmental stresses and promote legume nodulation. On the contrary, the role of ethylene in mycorrhizal symbiosis establishment is still controversial. In this work, the ACC deaminase-producing strain Pseudomonas putida UW4 AcdS+ and its mutant AcdS(-), impaired in ACC deaminase synthesis, were inoculated alone or in combination with the AM fungus Gigaspora rosea on cucumber. Mycorrhizal and bacterial colonization as well as plant growth and morphometric parameters were measured. The influence of each microorganism on the photosynthetic efficiency was evaluated on the second and fourth leaf. The strain AcdS+, but not the AcdS(-) mutant, increased AM colonization and arbuscule abundance. The mycorrhizal fungus, but not the bacterial strains, promoted plant growth. However, the AcdS+ strain, inoculated with G. rosea, induced synergistic effects on plant biomass, total root length and total leaf projected area. Finally, the photosynthetic performance index was increased by the strain UW4 AcdS+ inoculated in combination with G. rosea BEG9. These results suggest a key role of t...Continue Reading

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Citations

Jun 12, 2009·Annual Review of Microbiology·Paola Bonfante, Iulia-Andra Anca
Jan 1, 2012·Scientifica·Bernard R Glick
Apr 15, 2014·Ecotoxicology and Environmental Safety·Faisal IslamHina Rizvi
Sep 22, 2015·Environmental Science and Pollution Research International·Faisal IslamFarhat Abbas
Jun 25, 2015·BMC Plant Biology·Muneeza Iqbal RaiG Eric Schaller
Oct 8, 2013·Microbiological Research·Bernard R Glick
Mar 12, 2020·Journal of Experimental Botany·Maged M SaadHeribert Hirt
Nov 27, 2016·Environmental Science and Pollution Research International·Trishna MahantyProsun Tribedi
Mar 10, 2018·Frontiers in Plant Science·Francisco X NascimentoBernard R Glick
Dec 18, 2020·The Plant Journal : for Cell and Molecular Biology·Ruth EichmannPatrick Schäfer
Feb 26, 2020·Microbiological Research·Ma Del Carmen Orozco-MosquedaGustavo Santoyo
Apr 22, 2015·Plant Physiology·Elisa Gamalero, Bernard R Glick
Aug 22, 2021·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Maria de Los Angeles Beltrán-NamboYazmín Carreón-Abud

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