Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

Organisationseinheiten

Externe Organisationen

  • Nanjing Agricultural University
  • China Agricultural University
  • Eberhard Karls Universität Tübingen
  • Kunming Institute of Botany Chinese Academy of Sciences
  • Nanjing University of Information Science and Technology
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)95-109
Seitenumfang15
FachzeitschriftPlant and soil
Jahrgang494
Ausgabenummer1-2
Frühes Online-Datum11 Sept. 2023
PublikationsstatusVeröffentlicht - Jan. 2024

Abstract

Aims: Accurate predictions of soil carbon (C) feedbacks to climate change depend on an improved understanding of temperature sensitivity (Q10) of soil organic matter (SOM) decomposition. Although rhizosphere processes play a critical role in SOM decomposition, the rhizosphere effects on Q10 and their underlying microbial mechanisms remain unclear. Methods: Natural abundance approach was used to measure the rhizosphere priming effect (RPE) of maize under two temperature regimes in a 50-day pot experiment. We further determined the impact of rhizosphere process on the Q10 of SOM decomposition. Enzymatic kinetics, microbial growth rate, as well as 13C-phospholipid fatty acid (13C-PLFA) biomarkers were identified to evaluate the responses of microbial activity. Results: Warming relative to ambient increased the plant-derived C input, stimulated microbial growth rate, and enzyme activities by 87%, 23%, and 7–18%, respectively. Consequently, warming increased the RPE of maize up to 1-folds, and further caused a larger net C loss as compared to ambient after 50 days of transplanting. Gram negative bacteria and actinobacteria were important groups controlling the RPE, which was supported by the positive correlations between RPE and the abundance of gram negative and actinobacteria. Furthermore, we concluded a literature review and the results were consistent with our case study, where the presence of roots increased the temperature sensitivity of SOM decomposition by 0.17–0.56. This was because rhizodeposition activated microorganisms which produce more enzymes and increase SOM-derived substrate availability. This indicates that planted soils face higher risks of C emissions under future climate warming. Conclusions: Overall, root-soil interactions via RPE play a pivotal role in determining the temperature sensitivity of SOM decomposition.

ASJC Scopus Sachgebiete

Ziele für nachhaltige Entwicklung

Zitieren

Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth. / Zhou, Jie; Liu, Chunyan; Shi, Lingling et al.
in: Plant and soil, Jahrgang 494, Nr. 1-2, 01.2024, S. 95-109.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Download
@article{ba3829641f204523833a865cf640234b,
title = "Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth",
abstract = "Aims: Accurate predictions of soil carbon (C) feedbacks to climate change depend on an improved understanding of temperature sensitivity (Q10) of soil organic matter (SOM) decomposition. Although rhizosphere processes play a critical role in SOM decomposition, the rhizosphere effects on Q10 and their underlying microbial mechanisms remain unclear. Methods: Natural abundance approach was used to measure the rhizosphere priming effect (RPE) of maize under two temperature regimes in a 50-day pot experiment. We further determined the impact of rhizosphere process on the Q10 of SOM decomposition. Enzymatic kinetics, microbial growth rate, as well as 13C-phospholipid fatty acid (13C-PLFA) biomarkers were identified to evaluate the responses of microbial activity. Results: Warming relative to ambient increased the plant-derived C input, stimulated microbial growth rate, and enzyme activities by 87%, 23%, and 7–18%, respectively. Consequently, warming increased the RPE of maize up to 1-folds, and further caused a larger net C loss as compared to ambient after 50 days of transplanting. Gram negative bacteria and actinobacteria were important groups controlling the RPE, which was supported by the positive correlations between RPE and the abundance of gram negative and actinobacteria. Furthermore, we concluded a literature review and the results were consistent with our case study, where the presence of roots increased the temperature sensitivity of SOM decomposition by 0.17–0.56. This was because rhizodeposition activated microorganisms which produce more enzymes and increase SOM-derived substrate availability. This indicates that planted soils face higher risks of C emissions under future climate warming. Conclusions: Overall, root-soil interactions via RPE play a pivotal role in determining the temperature sensitivity of SOM decomposition.",
keywords = "C natural abundance, Phospholipid fatty acid, Rhizosphere priming effect, Soil organic carbon, Soil warming, Temperature sensitivity",
author = "Jie Zhou and Chunyan Liu and Lingling Shi and Kazem Zamanian",
note = "Funding Information: This study was financially supported by the National Natural Science Foundation of China (42207388). The authors would like to thank Karin Schmidt for laboratory assistance and Gabriele Lehmann and Rainer Schulz from the Laboratory for Radioisotopes (LARI), University of Goettingen. ",
year = "2024",
month = jan,
doi = "10.1007/s11104-023-06258-2",
language = "English",
volume = "494",
pages = "95--109",
journal = "Plant and soil",
issn = "0032-079X",
publisher = "Springer Netherlands",
number = "1-2",

}

Download

TY - JOUR

T1 - Rhizosphere influence on microbial functions

T2 - consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth

AU - Zhou, Jie

AU - Liu, Chunyan

AU - Shi, Lingling

AU - Zamanian, Kazem

N1 - Funding Information: This study was financially supported by the National Natural Science Foundation of China (42207388). The authors would like to thank Karin Schmidt for laboratory assistance and Gabriele Lehmann and Rainer Schulz from the Laboratory for Radioisotopes (LARI), University of Goettingen.

PY - 2024/1

Y1 - 2024/1

N2 - Aims: Accurate predictions of soil carbon (C) feedbacks to climate change depend on an improved understanding of temperature sensitivity (Q10) of soil organic matter (SOM) decomposition. Although rhizosphere processes play a critical role in SOM decomposition, the rhizosphere effects on Q10 and their underlying microbial mechanisms remain unclear. Methods: Natural abundance approach was used to measure the rhizosphere priming effect (RPE) of maize under two temperature regimes in a 50-day pot experiment. We further determined the impact of rhizosphere process on the Q10 of SOM decomposition. Enzymatic kinetics, microbial growth rate, as well as 13C-phospholipid fatty acid (13C-PLFA) biomarkers were identified to evaluate the responses of microbial activity. Results: Warming relative to ambient increased the plant-derived C input, stimulated microbial growth rate, and enzyme activities by 87%, 23%, and 7–18%, respectively. Consequently, warming increased the RPE of maize up to 1-folds, and further caused a larger net C loss as compared to ambient after 50 days of transplanting. Gram negative bacteria and actinobacteria were important groups controlling the RPE, which was supported by the positive correlations between RPE and the abundance of gram negative and actinobacteria. Furthermore, we concluded a literature review and the results were consistent with our case study, where the presence of roots increased the temperature sensitivity of SOM decomposition by 0.17–0.56. This was because rhizodeposition activated microorganisms which produce more enzymes and increase SOM-derived substrate availability. This indicates that planted soils face higher risks of C emissions under future climate warming. Conclusions: Overall, root-soil interactions via RPE play a pivotal role in determining the temperature sensitivity of SOM decomposition.

AB - Aims: Accurate predictions of soil carbon (C) feedbacks to climate change depend on an improved understanding of temperature sensitivity (Q10) of soil organic matter (SOM) decomposition. Although rhizosphere processes play a critical role in SOM decomposition, the rhizosphere effects on Q10 and their underlying microbial mechanisms remain unclear. Methods: Natural abundance approach was used to measure the rhizosphere priming effect (RPE) of maize under two temperature regimes in a 50-day pot experiment. We further determined the impact of rhizosphere process on the Q10 of SOM decomposition. Enzymatic kinetics, microbial growth rate, as well as 13C-phospholipid fatty acid (13C-PLFA) biomarkers were identified to evaluate the responses of microbial activity. Results: Warming relative to ambient increased the plant-derived C input, stimulated microbial growth rate, and enzyme activities by 87%, 23%, and 7–18%, respectively. Consequently, warming increased the RPE of maize up to 1-folds, and further caused a larger net C loss as compared to ambient after 50 days of transplanting. Gram negative bacteria and actinobacteria were important groups controlling the RPE, which was supported by the positive correlations between RPE and the abundance of gram negative and actinobacteria. Furthermore, we concluded a literature review and the results were consistent with our case study, where the presence of roots increased the temperature sensitivity of SOM decomposition by 0.17–0.56. This was because rhizodeposition activated microorganisms which produce more enzymes and increase SOM-derived substrate availability. This indicates that planted soils face higher risks of C emissions under future climate warming. Conclusions: Overall, root-soil interactions via RPE play a pivotal role in determining the temperature sensitivity of SOM decomposition.

KW - C natural abundance

KW - Phospholipid fatty acid

KW - Rhizosphere priming effect

KW - Soil organic carbon

KW - Soil warming

KW - Temperature sensitivity

UR - http://www.scopus.com/inward/record.url?scp=85170212795&partnerID=8YFLogxK

U2 - 10.1007/s11104-023-06258-2

DO - 10.1007/s11104-023-06258-2

M3 - Article

AN - SCOPUS:85170212795

VL - 494

SP - 95

EP - 109

JO - Plant and soil

JF - Plant and soil

SN - 0032-079X

IS - 1-2

ER -

Von denselben Autoren