• Over the past 10 years, interest in plant biostimulants (PBs) has been on the rise
    compelled by the growing interest of scientists, extension specialists, private industry,
    and growers in integrating these products in the array of environmentally friendly tools
    that secure improved crop performance and yield stability. Based on the new EU
    regulation PBs are defined through claimed agronomic effects, such as improvement
    of nutrient use efficiency, tolerance to abiotic stressors and crop quality. This definition
    entails diverse organic and inorganic substances and/or microorganisms such as humic
    acids, protein hydrolysates, seaweed extracts, mycorrhizal fungi, and N-fixing bacteria.
    The current mini-review provides an overview of the direct (stimulatory on C and N
    metabolism) and indirect (enhancing nutrient uptake and modulating root morphology)
    mechanisms by which microbial and non-microbial PBs improve nutrient efficiency,
    plant performance, and physiological status, resilience to environmental stressors and
    stimulate plant microbiomes. The scientific advances underlying synergistic and additive
    effects of microbial and non-microbial PBs are compiled and discussed for the first
    time. The review identifies several perspectives for future research between the scientific
    community and private industry to design and develop a second generation of PBs
    products (biostimulant 2.0) with specific biostimulatory action to render agriculture more
    sustainable and resilient.

  • “Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy”



    Copyright: published: 13 November 2018 doi: 10.3389/fpls.2018.01655. Copyright © 2018

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