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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1111/nph.18182
|2 doi
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|a pubmed24n1133.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Encinas-Valero, Manuel
|e verfasserin
|4 aut
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|a Holm oak decline is determined by shifts in fine root phenotypic plasticity in response to belowground stress
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 19.08.2022
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|a Date Revised 15.10.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.
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|a Climate change and pathogen outbreaks are the two major causes of decline in Mediterranean holm oak trees (Quercus ilex L. subsp. ballota (Desf.) Samp.). Crown-level changes in response to these stressful conditions have been widely documented but the responses of the root systems remain unexplored. The effects of environmental stress over roots and its potential role during the declining process need to be evaluated. We aimed to study how key morphological and architectural root parameters and nonstructural carbohydrates of roots are affected along a holm oak health gradient (i.e. within healthy, susceptible and declining trees). Holm oaks with different health statuses had different soil resource-uptake strategies. While healthy and susceptible trees showed a conservative resource-uptake strategy independently of soil nutrient availability, declining trees optimized soil resource acquisition by increasing the phenotypic plasticity of their fine root system. This increase in fine root phenotypic plasticity in declining holm oaks represents an energy-consuming strategy promoted to cope with the stress and at the expense of foliage maintenance. Our study describes a potential feedback loop resulting from strong unprecedented belowground stress that ultimately may lead to poor adaptation and tree death in the Spanish dehesa
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|a Journal Article
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|a defoliation
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|a holm oak
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|a nonstructural carbohydrates
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|a phenotypic plasticity
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|a root architecture
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|a soil nutrient availability
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|a trade-off
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|a Soil
|2 NLM
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|a Esteban, Raquel
|e verfasserin
|4 aut
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|a Hereş, Ana-Maria
|e verfasserin
|4 aut
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|a Vivas, María
|e verfasserin
|4 aut
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|a Fakhet, Dorra
|e verfasserin
|4 aut
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| 700 |
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|a Aranjuelo, Iker
|e verfasserin
|4 aut
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| 700 |
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|a Solla, Alejandro
|e verfasserin
|4 aut
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|a Moreno, Gerardo
|e verfasserin
|4 aut
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|a Curiel Yuste, Jorge
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 235(2022), 6 vom: 10. Sept., Seite 2237-2251
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|x 1469-8137
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|g volume:235
|g year:2022
|g number:6
|g day:10
|g month:09
|g pages:2237-2251
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|u http://dx.doi.org/10.1111/nph.18182
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