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Soil and plant health in relation to dynamic sustainment of Eh and pH homeostasis: A review

Husson Olivier, Sarthou Jean-Pierre, Bousset Lydia, Ratnadass Alain, Schmidt Hans-Peter, Kempf John, Husson Benoit, Tingry Sophie, Aubertot Jean-Noël, Deguine Jean-Philippe, Goebel François-Régis, Lamichhane Jay Ram. 2021. Soil and plant health in relation to dynamic sustainment of Eh and pH homeostasis: A review. Plant and Soil, 466 : 391-447.

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Quartile : Q1, Sujet : AGRONOMY / Quartile : Q1, Sujet : PLANT SCIENCES / Quartile : Q2, Sujet : SOIL SCIENCE

Résumé : Background: Plants perform in a specific Eh–pH spectrum and they rely on various processes to ensure their homeostasis, which plays a central role in their defense. The effects of multiple stresses, all translated into oxidative stress into the plant, and the capacity of the latter to respond to these stresses results in specific Eh–pH states in plants. Scope: We reviewed plant-invertebrate pests and plant-pathogens interactions under a Eh–pH homeostasis perspective by extensively analyzing the literature, which converges and supports a set of hypotheses. We report examples showing how the development and attacks of pests are correlated to spatio-temporal variations of Eh–pH in plants. We provide evidence-based discussion on how Eh–pH homeostasis can open a new perspective on plant health, and help unravel and disentangle the many Genotype x Environment x Management x Pest and Pathogen interactions. We propose an original perspective on energy allocation and growth-defense tradeoff by plants based on the Eh–pH homeostasis model. Finally, we show how Eh–pH conditions in the rhizosphere are the results of multiple interactions between the root system and microorganisms. Based on this, we hypothesize that soil suppressiveness is derived from soil structure leading to diverse Eh–pH niches that harbor a diversity of microorganisms. Conclusions: The Eh–pH homeostasis model proposed herein is central to soil and plant health. An Eh–pH perspective could become a very powerful tool to develop a “one health approach” unifying a large range of bio-physical processes in a very coherent and consistent manner.

Mots-clés Agrovoc : santé des plantes, qualité du sol, homéostasie, potentiel redox, réponse de la plante, stress oxydatif, réaction de défense des plantes, relation plante animal, relation hôte pathogène, intéraction génotype environnement

Mots-clés complémentaires : One Health

Mots-clés libres : One Health, Soil supressiveness, Redox potential, Energy allocation, Growth-defense

Classification Agris : F61 - Physiologie végétale - Nutrition
H50 - Troubles divers des plantes
P34 - Biologie du sol

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

  • Husson Olivier, CIRAD-PERSYST-UPR AIDA (FRA) ORCID: 0000-0001-9587-5819 - auteur correspondant
  • Sarthou Jean-Pierre, ENSAT (FRA)
  • Bousset Lydia, INRAE (FRA)
  • Ratnadass Alain, CIRAD-PERSYST-UPR HortSys (REU) ORCID: 0000-0002-8873-5671
  • Schmidt Hans-Peter, Ithaka Institute for Carbon Strategies (CHE)
  • Kempf John, Advancing Eco Agriculture (USA)
  • Husson Benoit, IDEEAQUACULTURE (FRA)
  • Tingry Sophie, IEM (FRA)
  • Aubertot Jean-Noël, INRAE (FRA)
  • Deguine Jean-Philippe, CIRAD-BIOS-UMR PVBMT (REU)
  • Goebel François-Régis, CIRAD-PERSYST-UPR AIDA (FRA) ORCID: 0000-0002-5438-1078
  • Lamichhane Jay Ram, INRAE (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/598717/)

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