Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease

Oak forests are facing multiple threats due to global change, with the introduction and expansion of invasive pathogens as one of the most detrimental. Here, we evaluated the use of soil biological fertiliser Biohumin<sup>®</sup> to improve the response of <i>Quercus ilex</i>...

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Main Authors: Aida López-Sánchez, Miquel Capó, Jesús Rodríguez-Calcerrada, Marta Peláez, Alejandro Solla, Juan A. Martín, Ramón Perea
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/13/10/1558
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author Aida López-Sánchez
Miquel Capó
Jesús Rodríguez-Calcerrada
Marta Peláez
Alejandro Solla
Juan A. Martín
Ramón Perea
author_facet Aida López-Sánchez
Miquel Capó
Jesús Rodríguez-Calcerrada
Marta Peláez
Alejandro Solla
Juan A. Martín
Ramón Perea
author_sort Aida López-Sánchez
collection DOAJ
description Oak forests are facing multiple threats due to global change, with the introduction and expansion of invasive pathogens as one of the most detrimental. Here, we evaluated the use of soil biological fertiliser Biohumin<sup>®</sup> to improve the response of <i>Quercus ilex</i> L. to the soil-borne pathogen <i>Phytophthora cinnamomi</i> Rands by using one-year-old seedlings fertilised at 0, 12.5, and 25% concentrations of Biohumin<sup>®</sup> (<i>v</i>/<i>v</i>). Our hypothesis was that plant vigour and response to the pathogen would improve with Biohumin<sup>®</sup>. The effects of soil infestation and fertilisation were tested by assessing plant survival, growth, and physiology. The soil infested with <i>P. cinnamomi</i> negatively affected all the studied traits. We observed that a moderate concentration of Biohumin<sup>®</sup> (12.5%) increased plant survival. However, a high concentration (25%) reduced the survival compared with the control, probably as a result of the stress caused by both biotic (infection) and abiotic (soil toxicity) factors. Biohumin<sup>®</sup> at the highest concentration reduced the plant height-to-stem diameter ratio (H/D) and negatively affected plant biomass and physiological activity. Combined biofertilisation and infection induced synergistic negative effects in the leaf water potential compared with infection and fertilisation applied alone. A higher concentration of Biohumin<sup>®</sup> may favour pathogens more than plants. Further studies should explore the causes of the negative effect of the high concentration of Biohumin<sup>®</sup> observed here and evaluate if lower concentrations may benefit plant survival and physiology against soil pathogens.
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spelling doaj.art-89e5bc6a83a84bac9ce6aabe953643382023-11-24T00:09:10ZengMDPI AGForests1999-49072022-09-011310155810.3390/f13101558Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root DiseaseAida López-Sánchez0Miquel Capó1Jesús Rodríguez-Calcerrada2Marta Peláez3Alejandro Solla4Juan A. Martín5Ramón Perea6Departmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainDepartmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainDepartmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainDepartmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainFaculty of Foresty, Institute for Dehesa Research (INDEHESA), Universidad de Extremadura, Avenida Virgen del Puerto 2, 10600 Plasencia, SpainDepartmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainDepartmento de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, SpainOak forests are facing multiple threats due to global change, with the introduction and expansion of invasive pathogens as one of the most detrimental. Here, we evaluated the use of soil biological fertiliser Biohumin<sup>®</sup> to improve the response of <i>Quercus ilex</i> L. to the soil-borne pathogen <i>Phytophthora cinnamomi</i> Rands by using one-year-old seedlings fertilised at 0, 12.5, and 25% concentrations of Biohumin<sup>®</sup> (<i>v</i>/<i>v</i>). Our hypothesis was that plant vigour and response to the pathogen would improve with Biohumin<sup>®</sup>. The effects of soil infestation and fertilisation were tested by assessing plant survival, growth, and physiology. The soil infested with <i>P. cinnamomi</i> negatively affected all the studied traits. We observed that a moderate concentration of Biohumin<sup>®</sup> (12.5%) increased plant survival. However, a high concentration (25%) reduced the survival compared with the control, probably as a result of the stress caused by both biotic (infection) and abiotic (soil toxicity) factors. Biohumin<sup>®</sup> at the highest concentration reduced the plant height-to-stem diameter ratio (H/D) and negatively affected plant biomass and physiological activity. Combined biofertilisation and infection induced synergistic negative effects in the leaf water potential compared with infection and fertilisation applied alone. A higher concentration of Biohumin<sup>®</sup> may favour pathogens more than plants. Further studies should explore the causes of the negative effect of the high concentration of Biohumin<sup>®</sup> observed here and evaluate if lower concentrations may benefit plant survival and physiology against soil pathogens.https://www.mdpi.com/1999-4907/13/10/1558anthropogenic disturbancesmineral nutritionecological restorationMediterranean forestsplant pathogensplant physiology
spellingShingle Aida López-Sánchez
Miquel Capó
Jesús Rodríguez-Calcerrada
Marta Peláez
Alejandro Solla
Juan A. Martín
Ramón Perea
Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
Forests
anthropogenic disturbances
mineral nutrition
ecological restoration
Mediterranean forests
plant pathogens
plant physiology
title Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
title_full Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
title_fullStr Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
title_full_unstemmed Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
title_short Exploring the Use of Solid Biofertilisers to Mitigate the Effects of <i>Phytophthora</i> Oak Root Disease
title_sort exploring the use of solid biofertilisers to mitigate the effects of i phytophthora i oak root disease
topic anthropogenic disturbances
mineral nutrition
ecological restoration
Mediterranean forests
plant pathogens
plant physiology
url https://www.mdpi.com/1999-4907/13/10/1558
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