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The Involvement of Phytophthora Root Rot and Drought Stress in Holm Oak Decline: from Ecophysiology to Microbiome Influence

The Involvement of Phytophthora Root Rot and Drought Stress in Holm Oak Decline: from... Purpose of Review Holm oak is a relevant species, both for its distribution and ecological importance. Among the risks looming over this species, oak decline—influenced by extreme climatic events, and alien-invasive species—is considered the main factor causing the loss of holm oak in Mediterranean open woodlands. The aim of this review is to identify and summarize the effects of drought and pathogen root rot, focusing on tree physiology, and the relationship between the stressors (biotic and abiotic) and the tree response. Recent Findings Symptoms of root rot are often associated with drought. However, it has been shown the presence of a differential response to root rot and severe drought is related with general defence mechanisms triggered by the plant. Soil microbiota has also been shown to be a key factor influencing health status and soil pathogen abundance. The application of next- generation sequencing techniques to forest pathology allows us to study complex relationships between soil, plant and microorganisms. Summary Tolerance of holm oak against Phytophthora cinnamomi root rot is related to specific hydric and photo- synthetic mechanisms that differ from those associated with drought. This response involves changes in the metab- olism of the photosynthetic organs of the plant http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Current Forestry Reports Springer Journals

The Involvement of Phytophthora Root Rot and Drought Stress in Holm Oak Decline: from Ecophysiology to Microbiome Influence

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References (113)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Springer Nature Switzerland AG
Subject
Environment; Sustainable Development; Environmental Management; Nature Conservation; Forestry; Forestry Management; Ecology
eISSN
2198-6436
DOI
10.1007/s40725-019-00105-3
Publisher site
See Article on Publisher Site

Abstract

Purpose of Review Holm oak is a relevant species, both for its distribution and ecological importance. Among the risks looming over this species, oak decline—influenced by extreme climatic events, and alien-invasive species—is considered the main factor causing the loss of holm oak in Mediterranean open woodlands. The aim of this review is to identify and summarize the effects of drought and pathogen root rot, focusing on tree physiology, and the relationship between the stressors (biotic and abiotic) and the tree response. Recent Findings Symptoms of root rot are often associated with drought. However, it has been shown the presence of a differential response to root rot and severe drought is related with general defence mechanisms triggered by the plant. Soil microbiota has also been shown to be a key factor influencing health status and soil pathogen abundance. The application of next- generation sequencing techniques to forest pathology allows us to study complex relationships between soil, plant and microorganisms. Summary Tolerance of holm oak against Phytophthora cinnamomi root rot is related to specific hydric and photo- synthetic mechanisms that differ from those associated with drought. This response involves changes in the metab- olism of the photosynthetic organs of the plant

Journal

Current Forestry Reports – Springer Journals

Published: Nov 13, 2019

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