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Biomed Res Int. 2016;2016:3747501. doi: 10.1155/2016/3747501. Epub 2016 Jun 5.

Involvement of Hormone- and ROS-Signaling Pathways in the Beneficial Action of Humic Substances on Plants Growing under Normal and Stressing Conditions.

Author information

1
Soil Biology Laboratory, Department of Soil, Federal Rural University of Rio de Janeiro (UFRRJ), Rodovia BR 465 km 7, 23890-000 Seropédica, RJ, Brazil.
2
Department of Environmental Biology, Agricultural Chemistry and Biology Group-CMI Roullier, Faculty of Sciences, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.

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.

PMID:
27366744
PMCID:
PMC4913021
DOI:
10.1155/2016/3747501
[Indexed for MEDLINE]
Free PMC Article

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