title: Involvement of Hormone- and ROS-Signaling Pathways in the Beneficial Action of Humic Substances on Plants Growing under Normal and Stressing Conditions.
abstract: The importance of soil humus in soil fertility has been well established many years ago. However, the knowledge about the whole mechanisms by which humic molecules in the rhizosphere improve plant growth remains partial and rather fragmentary. In this review we discuss the relationships between two main signaling pathway families that are affected by humic substances within the plant: one directly related to hormonal action and the other related to reactive oxygen species (ROS). In this sense, our aims are to try the integration of all these events in a more comprehensive model and underline some points in the model that remain unclear and deserve further research.
authors.affiliation: Soil Biology Laboratory, Department of Soil, Federal Rural University of Rio de Janeiro (UFRRJ), Rodovia BR 465 km 7, 23890-000 Seropédica, RJ, Brazil.
authors.forename: Andrés Calderín
authors.initials: AC
authors.lastname: García
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: Maite
authors.initials: M
authors.lastname: Olaetxea
authors.affiliation: Soil Biology Laboratory, Department of Soil, Federal Rural University of Rio de Janeiro (UFRRJ), Rodovia BR 465 km 7, 23890-000 Seropédica, RJ, Brazil.
authors.forename: Leandro Azevedo
authors.initials: LA
authors.lastname: Santos
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: Verónica
authors.initials: V
authors.lastname: Mora
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: Roberto
authors.initials: R
authors.lastname: Baigorri
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Fuentes
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: Angel Maria
authors.initials: AM
authors.lastname: Zamarreño
authors.affiliation: Soil Biology Laboratory, Department of Soil, Federal Rural University of Rio de Janeiro (UFRRJ), Rodovia BR 465 km 7, 23890-000 Seropédica, RJ, Brazil.
authors.forename: Ricardo Luis Louro
authors.initials: RL
authors.lastname: Berbara
authors.affiliation: Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.
authors.forename: José María
authors.initials: JM
authors.lastname: Garcia-Mina
mesh_terms: D006812:Humic Substances; D010937:Plant Growth Regulators / Q000502:physiology*; D018521:Plant Physiological Phenomena; D017382:Reactive Oxygen Species / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*; D013312:Stress, Physiological / Q000502:physiology*
chemical_list: D006812:Humic Substances; D010937:Plant Growth Regulators; D017382:Reactive Oxygen Species