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Rainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil

Background and aims Comparing root functioning under contrasting rainfall regimes can help assessing the capacity of plant species to cope with more intense and frequent drought predicted under climate change context. While the awareness of the need to study the whole root system is growing, most of... Full description

Journal Title: Plant and soil 2017, Vol.414 (1/2), p.339-354
Main Author: Pradier, Celine
Other Authors: Hinsinger, Philippe , Laclau, Jean-Paul , Bouillet, Jean-Pierre , Guerrini, Irae Amaral , Goncalves, Jose Leonardo Moraes , Asensio, Veronica
Format: Electronic Article Electronic Article
Language: English
Subjects:
aos
fao
is
org
pH
Publisher: Cham: Springer
ID: ISSN: 0032-079X
Link: https://hal.archives-ouvertes.fr/hal-01606311
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title: Rainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil
format: Article
creator:
  • Pradier, Celine
  • Hinsinger, Philippe
  • Laclau, Jean-Paul
  • Bouillet, Jean-Pierre
  • Guerrini, Irae Amaral
  • Goncalves, Jose Leonardo Moraes
  • Asensio, Veronica
subjects:
  • Acidification
  • adaptation aux changements climatiques
  • agrovoc
  • aims
  • aos
  • Biogeochemical cycles
  • Biogeochemistry
  • Biomedical and Life Sciences
  • c_1070
  • c_1374567058134
  • c_16034
  • c_1666
  • c_2190
  • c_2391
  • c_2693
  • c_29572
  • c_5272
  • c_6139
  • c_6569
  • c_90
  • Changement climatique
  • croissance et développement
  • Earth Sciences
  • Ecology
  • Environmental aspects
  • Environmental impact
  • Eucalyptus
  • eucalyptus gr
  • Eucalyptus grandis
  • Exchangeable potassium cation
  • fao
  • Fine root
  • Flowers & plants
  • Geochemistry
  • Growth
  • http
  • ion potassium
  • is
  • Life Sciences
  • Météorologie et climatologie
  • nutrition
  • org
  • pH
  • Physiologie végétale
  • Plant Physiology
  • Plant Sciences
  • pluviométrie
  • Potassium
  • Production forestière
  • profondeur
  • profoundness
  • Rain and rainfall
  • Rainfall measurement
  • rainfall rate recording
  • Regular Article
  • Rhizosphere
  • rhizosphère
  • root systems
  • Sciences of the Universe
  • Soil depth
  • Soil Science & Conservation
  • système racinaire
  • Sécheresse
  • Transport des substances nutritives
  • Vegetal Biology
ispartof: Plant and soil, 2017, Vol.414 (1/2), p.339-354
description: Background and aims Comparing root functioning under contrasting rainfall regimes can help assessing the capacity of plant species to cope with more intense and frequent drought predicted under climate change context. While the awareness of the need to study the whole root system is growing, most of the studies of root functioning through rhizosphere analyses have been restricted to the topsoil. Our study aimed to assess whether the depth in the soil and the rainfall amount affect root functioning, and notably the fate of nutrients within the rhizosphere. Methods We compared pH and nutrient availability within the rhizosphere and bulk soil along a 4-m deep soil profile in a 5-year-old eucalypt (Eucalyptus grandis) plantation under undisturbed and reduced rainfall treatments. Results The exchangeable concentration K and the pH of the bulk soil were not influenced by the reduced rainfall treatment. By contrast, the H₃O⁺ concentration in the rhizosphere was significantly greater than that of the bulk soil, only in the reduced rainfall plot. The concentrations of exchangeable in the rhizosphere were significantly larger than those of the bulk soil in both treatments but this difference was higher in the reduced rainfall plot, notably below the depth of 2 m. Both exchangeable and H₃O⁺ concentration significantly increased within the rhizosphere in the reduced rainfall treatment at soil depth down to 4 m. Conclusions The amount of brought to the roots by mass flow was estimated and could not explain the observed increase in exchangeable囎K concentration within the rhizosphere. A more likely explanation was root-induced weathering of K-bearing minerals, partly related to enhanced rhizosphere acidification. Our results demonstrate that root functioning can be considerably altered as a response to drought down to large depths.
language: eng
source:
identifier: ISSN: 0032-079X
fulltext: no_fulltext
issn:
  • 0032-079X
  • 1573-5036
url: Link


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titleRainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil
creatorPradier, Celine ; Hinsinger, Philippe ; Laclau, Jean-Paul ; Bouillet, Jean-Pierre ; Guerrini, Irae Amaral ; Goncalves, Jose Leonardo Moraes ; Asensio, Veronica
creatorcontribPradier, Celine ; Hinsinger, Philippe ; Laclau, Jean-Paul ; Bouillet, Jean-Pierre ; Guerrini, Irae Amaral ; Goncalves, Jose Leonardo Moraes ; Asensio, Veronica
descriptionBackground and aims Comparing root functioning under contrasting rainfall regimes can help assessing the capacity of plant species to cope with more intense and frequent drought predicted under climate change context. While the awareness of the need to study the whole root system is growing, most of the studies of root functioning through rhizosphere analyses have been restricted to the topsoil. Our study aimed to assess whether the depth in the soil and the rainfall amount affect root functioning, and notably the fate of nutrients within the rhizosphere. Methods We compared pH and nutrient availability within the rhizosphere and bulk soil along a 4-m deep soil profile in a 5-year-old eucalypt (Eucalyptus grandis) plantation under undisturbed and reduced rainfall treatments. Results The exchangeable concentration K and the pH of the bulk soil were not influenced by the reduced rainfall treatment. By contrast, the H₃O⁺ concentration in the rhizosphere was significantly greater than that of the bulk soil, only in the reduced rainfall plot. The concentrations of exchangeable in the rhizosphere were significantly larger than those of the bulk soil in both treatments but this difference was higher in the reduced rainfall plot, notably below the depth of 2 m. Both exchangeable and H₃O⁺ concentration significantly increased within the rhizosphere in the reduced rainfall treatment at soil depth down to 4 m. Conclusions The amount of brought to the roots by mass flow was estimated and could not explain the observed increase in exchangeable囎K concentration within the rhizosphere. A more likely explanation was root-induced weathering of K-bearing minerals, partly related to enhanced rhizosphere acidification. Our results demonstrate that root functioning can be considerably altered as a response to drought down to large depths.
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languageeng
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subjectAcidification ; adaptation aux changements climatiques ; agrovoc ; aims ; aos ; Biogeochemical cycles ; Biogeochemistry ; Biomedical and Life Sciences ; c_1070 ; c_1374567058134 ; c_16034 ; c_1666 ; c_2190 ; c_2391 ; c_2693 ; c_29572 ; c_5272 ; c_6139 ; c_6569 ; c_90 ; Changement climatique ; croissance et développement ; Earth Sciences ; Ecology ; Environmental aspects ; Environmental impact ; Eucalyptus ; eucalyptus gr ; Eucalyptus grandis ; Exchangeable potassium cation ; fao ; Fine root ; Flowers & plants ; Geochemistry ; Growth ; http ; ion potassium ; is ; Life Sciences ; Météorologie et climatologie ; nutrition ; org ; pH ; Physiologie végétale ; Plant Physiology ; Plant Sciences ; pluviométrie ; Potassium ; Production forestière ; profondeur ; profoundness ; Rain and rainfall ; Rainfall measurement ; rainfall rate recording ; Regular Article ; Rhizosphere ; rhizosphère ; root systems ; Sciences of the Universe ; Soil depth ; Soil Science & Conservation ; système racinaire ; Sécheresse ; Transport des substances nutritives ; Vegetal Biology
ispartofPlant and soil, 2017, Vol.414 (1/2), p.339-354
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0Springer Science+Business Media 2017
1Springer International Publishing Switzerland 2016
2COPYRIGHT 2017 Springer
3Plant and Soil is a copyright of Springer, 2017.
4Distributed under a Creative Commons Attribution 4.0 International License
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1Hinsinger, Philippe
2Laclau, Jean-Paul
3Bouillet, Jean-Pierre
4Guerrini, Irae Amaral
5Goncalves, Jose Leonardo Moraes
6Asensio, Veronica
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0Rainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil
1Plant and soil
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descriptionBackground and aims Comparing root functioning under contrasting rainfall regimes can help assessing the capacity of plant species to cope with more intense and frequent drought predicted under climate change context. While the awareness of the need to study the whole root system is growing, most of the studies of root functioning through rhizosphere analyses have been restricted to the topsoil. Our study aimed to assess whether the depth in the soil and the rainfall amount affect root functioning, and notably the fate of nutrients within the rhizosphere. Methods We compared pH and nutrient availability within the rhizosphere and bulk soil along a 4-m deep soil profile in a 5-year-old eucalypt (Eucalyptus grandis) plantation under undisturbed and reduced rainfall treatments. Results The exchangeable concentration K and the pH of the bulk soil were not influenced by the reduced rainfall treatment. By contrast, the H₃O⁺ concentration in the rhizosphere was significantly greater than that of the bulk soil, only in the reduced rainfall plot. The concentrations of exchangeable in the rhizosphere were significantly larger than those of the bulk soil in both treatments but this difference was higher in the reduced rainfall plot, notably below the depth of 2 m. Both exchangeable and H₃O⁺ concentration significantly increased within the rhizosphere in the reduced rainfall treatment at soil depth down to 4 m. Conclusions The amount of brought to the roots by mass flow was estimated and could not explain the observed increase in exchangeable囎K concentration within the rhizosphere. A more likely explanation was root-induced weathering of K-bearing minerals, partly related to enhanced rhizosphere acidification. Our results demonstrate that root functioning can be considerably altered as a response to drought down to large depths.
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0Acidification
1adaptation aux changements climatiques
2agrovoc
3aims
4aos
5Biogeochemical cycles
6Biogeochemistry
7Biomedical and Life Sciences
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9c_1374567058134
10c_16034
11c_1666
12c_2190
13c_2391
14c_2693
15c_29572
16c_5272
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21croissance et développement
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24Environmental aspects
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28Eucalyptus grandis
29Exchangeable potassium cation
30fao
31Fine root
32Flowers & plants
33Geochemistry
34Growth
35http
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37is
38Life Sciences
39Météorologie et climatologie
40nutrition
41org
42pH
43Physiologie végétale
44Plant Physiology
45Plant Sciences
46pluviométrie
47Potassium
48Production forestière
49profondeur
50profoundness
51Rain and rainfall
52Rainfall measurement
53rainfall rate recording
54Regular Article
55Rhizosphere
56rhizosphère
57root systems
58Sciences of the Universe
59Soil depth
60Soil Science & Conservation
61système racinaire
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63Transport des substances nutritives
64Vegetal Biology
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titleRainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil
authorPradier, Celine ; Hinsinger, Philippe ; Laclau, Jean-Paul ; Bouillet, Jean-Pierre ; Guerrini, Irae Amaral ; Goncalves, Jose Leonardo Moraes ; Asensio, Veronica
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6Biogeochemistry
7Biomedical and Life Sciences
8c_1070
9c_1374567058134
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52Rainfall measurement
53rainfall rate recording
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55Rhizosphere
56rhizosphère
57root systems
58Sciences of the Universe
59Soil depth
60Soil Science & Conservation
61système racinaire
62Sécheresse
63Transport des substances nutritives
64Vegetal Biology
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1Hinsinger, Philippe
2Laclau, Jean-Paul
3Bouillet, Jean-Pierre
4Guerrini, Irae Amaral
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atitleRainfall reduction impacts rhizosphere biogeochemistry in eucalypts grown in a deep Ferralsol in Brazil
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date2017-05-01
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pages339-354
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abstractBackground and aims Comparing root functioning under contrasting rainfall regimes can help assessing the capacity of plant species to cope with more intense and frequent drought predicted under climate change context. While the awareness of the need to study the whole root system is growing, most of the studies of root functioning through rhizosphere analyses have been restricted to the topsoil. Our study aimed to assess whether the depth in the soil and the rainfall amount affect root functioning, and notably the fate of nutrients within the rhizosphere. Methods We compared pH and nutrient availability within the rhizosphere and bulk soil along a 4-m deep soil profile in a 5-year-old eucalypt (Eucalyptus grandis) plantation under undisturbed and reduced rainfall treatments. Results The exchangeable concentration K and the pH of the bulk soil were not influenced by the reduced rainfall treatment. By contrast, the H₃O⁺ concentration in the rhizosphere was significantly greater than that of the bulk soil, only in the reduced rainfall plot. The concentrations of exchangeable in the rhizosphere were significantly larger than those of the bulk soil in both treatments but this difference was higher in the reduced rainfall plot, notably below the depth of 2 m. Both exchangeable and H₃O⁺ concentration significantly increased within the rhizosphere in the reduced rainfall treatment at soil depth down to 4 m. Conclusions The amount of brought to the roots by mass flow was estimated and could not explain the observed increase in exchangeable囎K concentration within the rhizosphere. A more likely explanation was root-induced weathering of K-bearing minerals, partly related to enhanced rhizosphere acidification. Our results demonstrate that root functioning can be considerably altered as a response to drought down to large depths.
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