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A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions

Microbial plant biostimulants have been successfully applied to improve plant growth, stress resilience and productivity. However, the mechanisms of action of biostimulants are still enigmatic, which is the main bottleneck for the fully realization and implementation of biostimulants into the agricu...

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Autores principales: Nephali, Lerato, Moodley, Venessa, Piater, Lizelle, Steenkamp, Paul, Buthelezi, Nombuso, Dubery, Ian, Burgess, Karl, Huyser, Johan, Tugizimana, Fidele
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8210945/
https://www.ncbi.nlm.nih.gov/pubmed/34149776
http://dx.doi.org/10.3389/fpls.2021.676632
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author Nephali, Lerato
Moodley, Venessa
Piater, Lizelle
Steenkamp, Paul
Buthelezi, Nombuso
Dubery, Ian
Burgess, Karl
Huyser, Johan
Tugizimana, Fidele
author_facet Nephali, Lerato
Moodley, Venessa
Piater, Lizelle
Steenkamp, Paul
Buthelezi, Nombuso
Dubery, Ian
Burgess, Karl
Huyser, Johan
Tugizimana, Fidele
author_sort Nephali, Lerato
collection PubMed
description Microbial plant biostimulants have been successfully applied to improve plant growth, stress resilience and productivity. However, the mechanisms of action of biostimulants are still enigmatic, which is the main bottleneck for the fully realization and implementation of biostimulants into the agricultural industry. Here, we report the elucidation of a global metabolic landscape of maize (Zea mays L) leaves in response to a microbial biostimulant, under well-watered and drought conditions. The study reveals that the increased pool of tricarboxylic acid (TCA) intermediates, alterations in amino acid levels and differential changes in phenolics and lipids are key metabolic signatures induced by the application of the microbial-based biostimulant. These reconfigurations of metabolism gravitate toward growth-promotion and defense preconditioning of the plant. Furthermore, the application of microbial biostimulant conferred enhanced drought resilience to maize plants via altering key metabolic pathways involved in drought resistance mechanisms such as the redox homeostasis, strengthening of the plant cell wall, osmoregulation, energy production and membrane remodeling. For the first time, we show key molecular events, metabolic reprogramming, activated by a microbial biostimulant for plant growth promotion and defense priming. Thus, these elucidated metabolomic insights contribute to ongoing efforts in decoding modes of action of biostimulants and generating fundamental scientific knowledgebase that is necessary for the development of the plant biostimulants industry, for sustainable food security.
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spelling pubmed-82109452021-06-18 A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions Nephali, Lerato Moodley, Venessa Piater, Lizelle Steenkamp, Paul Buthelezi, Nombuso Dubery, Ian Burgess, Karl Huyser, Johan Tugizimana, Fidele Front Plant Sci Plant Science Microbial plant biostimulants have been successfully applied to improve plant growth, stress resilience and productivity. However, the mechanisms of action of biostimulants are still enigmatic, which is the main bottleneck for the fully realization and implementation of biostimulants into the agricultural industry. Here, we report the elucidation of a global metabolic landscape of maize (Zea mays L) leaves in response to a microbial biostimulant, under well-watered and drought conditions. The study reveals that the increased pool of tricarboxylic acid (TCA) intermediates, alterations in amino acid levels and differential changes in phenolics and lipids are key metabolic signatures induced by the application of the microbial-based biostimulant. These reconfigurations of metabolism gravitate toward growth-promotion and defense preconditioning of the plant. Furthermore, the application of microbial biostimulant conferred enhanced drought resilience to maize plants via altering key metabolic pathways involved in drought resistance mechanisms such as the redox homeostasis, strengthening of the plant cell wall, osmoregulation, energy production and membrane remodeling. For the first time, we show key molecular events, metabolic reprogramming, activated by a microbial biostimulant for plant growth promotion and defense priming. Thus, these elucidated metabolomic insights contribute to ongoing efforts in decoding modes of action of biostimulants and generating fundamental scientific knowledgebase that is necessary for the development of the plant biostimulants industry, for sustainable food security. Frontiers Media S.A. 2021-06-03 /pmc/articles/PMC8210945/ /pubmed/34149776 http://dx.doi.org/10.3389/fpls.2021.676632 Text en Copyright © 2021 Nephali, Moodley, Piater, Steenkamp, Buthelezi, Dubery, Burgess, Huyser and Tugizimana. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Nephali, Lerato
Moodley, Venessa
Piater, Lizelle
Steenkamp, Paul
Buthelezi, Nombuso
Dubery, Ian
Burgess, Karl
Huyser, Johan
Tugizimana, Fidele
A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title_full A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title_fullStr A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title_full_unstemmed A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title_short A Metabolomic Landscape of Maize Plants Treated With a Microbial Biostimulant Under Well-Watered and Drought Conditions
title_sort metabolomic landscape of maize plants treated with a microbial biostimulant under well-watered and drought conditions
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8210945/
https://www.ncbi.nlm.nih.gov/pubmed/34149776
http://dx.doi.org/10.3389/fpls.2021.676632
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