Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation

ABSTRACT Rapidly expanding conversion of tropical forests to oil palm plantations in Southeast Asia leads to soil acidification following intensive nitrogen fertilization. Changes in soil pH are predicted to have an impact on archaeal ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB)...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jun Zhao, Yiyu Meng, Julia Drewer, Ute M. Skiba, James I. Prosser, Cécile Gubry-Rangin
Formato:	article
Lenguaje:	EN
Publicado:	American Society for Microbiology 2020
Materias:	land-use change oil palm soil pH perturbation stability tropical forest soil Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/f2fe67a445754e16b176ffae0d6f829b
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:f2fe67a445754e16b176ffae0d6f829b
record_format	dspace
spelling	oai:doaj.org-article:f2fe67a445754e16b176ffae0d6f829b2021-12-02T18:23:16ZDifferential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation10.1128/mSystems.00309-202379-5077https://doaj.org/article/f2fe67a445754e16b176ffae0d6f829b2020-06-01T00:00:00Zhttps://journals.asm.org/doi/10.1128/mSystems.00309-20https://doaj.org/toc/2379-5077ABSTRACT Rapidly expanding conversion of tropical forests to oil palm plantations in Southeast Asia leads to soil acidification following intensive nitrogen fertilization. Changes in soil pH are predicted to have an impact on archaeal ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and complete (comammox) ammonia oxidizers and, consequently, on nitrification. It is therefore critical to determine whether the predicted effects of pH on ammonia oxidizers and nitrification activity apply in tropical soils subjected to various degrees of anthropogenic activity. This was investigated by experimental manipulation of pH in soil microcosms from a land-use gradient (forest, riparian, and oil palm soils). The nitrification rate was greater in forest soils with native neutral pH than in converted acidic oil palm soils. Ammonia oxidizer activity decreased following acidification of the forest soils but increased after liming of the oil palm soils, leading to a trend of a reversed net nitrification rate after pH modification. AOA and AOB nitrification activity was dependent on pH, but AOB were more sensitive to pH modification than AOA, which demonstrates a greater stability of AOA than AOB under conditions of short-term perturbation. In addition, these results predict AOB to be a good bioindicator of nitrification response following pH perturbation during land-use conversion. AOB and/or comammox species were active in all soils along the land-use gradient, even, unexpectedly, under acidic conditions, suggesting their adaptation to native acidic or acidified soils. The present study therefore provided evidence for limited stability of soil ammonia oxidizer activity following intensive anthropogenic activities, which likely aggravates the vulnerability of nitrogen cycle processes to environmental disturbance. IMPORTANCE Physiological and ecological studies have provided evidence for pH-driven niche specialization of ammonia oxidizers in terrestrial ecosystems. However, the functional stability of ammonia oxidizers following pH change has not been investigated, despite its importance in understanding the maintenance of ecosystem processes following environmental perturbation. This is particularly true after anthropogenic perturbation, such as the conversion of tropical forest to oil palm plantations. This study demonstrated a great impact of land-use conversion on nitrification, which is linked to changes in soil pH due to common agricultural practices (intensive fertilization). In addition, the different communities of ammonia oxidizers were differently affected by short-term pH perturbations, with implications for future land-use conversions but also for increased knowledge of associated global nitrous oxide emissions and current climate change concerns.Jun ZhaoYiyu MengJulia DrewerUte M. SkibaJames I. ProsserCécile Gubry-RanginAmerican Society for Microbiologyarticleland-use changeoil palm soilpH perturbationstabilitytropical forest soilMicrobiologyQR1-502ENmSystems, Vol 5, Iss 3 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	land-use change oil palm soil pH perturbation stability tropical forest soil Microbiology QR1-502
spellingShingle	land-use change oil palm soil pH perturbation stability tropical forest soil Microbiology QR1-502 Jun Zhao Yiyu Meng Julia Drewer Ute M. Skiba James I. Prosser Cécile Gubry-Rangin Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
description	ABSTRACT Rapidly expanding conversion of tropical forests to oil palm plantations in Southeast Asia leads to soil acidification following intensive nitrogen fertilization. Changes in soil pH are predicted to have an impact on archaeal ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and complete (comammox) ammonia oxidizers and, consequently, on nitrification. It is therefore critical to determine whether the predicted effects of pH on ammonia oxidizers and nitrification activity apply in tropical soils subjected to various degrees of anthropogenic activity. This was investigated by experimental manipulation of pH in soil microcosms from a land-use gradient (forest, riparian, and oil palm soils). The nitrification rate was greater in forest soils with native neutral pH than in converted acidic oil palm soils. Ammonia oxidizer activity decreased following acidification of the forest soils but increased after liming of the oil palm soils, leading to a trend of a reversed net nitrification rate after pH modification. AOA and AOB nitrification activity was dependent on pH, but AOB were more sensitive to pH modification than AOA, which demonstrates a greater stability of AOA than AOB under conditions of short-term perturbation. In addition, these results predict AOB to be a good bioindicator of nitrification response following pH perturbation during land-use conversion. AOB and/or comammox species were active in all soils along the land-use gradient, even, unexpectedly, under acidic conditions, suggesting their adaptation to native acidic or acidified soils. The present study therefore provided evidence for limited stability of soil ammonia oxidizer activity following intensive anthropogenic activities, which likely aggravates the vulnerability of nitrogen cycle processes to environmental disturbance. IMPORTANCE Physiological and ecological studies have provided evidence for pH-driven niche specialization of ammonia oxidizers in terrestrial ecosystems. However, the functional stability of ammonia oxidizers following pH change has not been investigated, despite its importance in understanding the maintenance of ecosystem processes following environmental perturbation. This is particularly true after anthropogenic perturbation, such as the conversion of tropical forest to oil palm plantations. This study demonstrated a great impact of land-use conversion on nitrification, which is linked to changes in soil pH due to common agricultural practices (intensive fertilization). In addition, the different communities of ammonia oxidizers were differently affected by short-term pH perturbations, with implications for future land-use conversions but also for increased knowledge of associated global nitrous oxide emissions and current climate change concerns.
format	article
author	Jun Zhao Yiyu Meng Julia Drewer Ute M. Skiba James I. Prosser Cécile Gubry-Rangin
author_facet	Jun Zhao Yiyu Meng Julia Drewer Ute M. Skiba James I. Prosser Cécile Gubry-Rangin
author_sort	Jun Zhao
title	Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
title_short	Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
title_full	Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
title_fullStr	Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
title_full_unstemmed	Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation
title_sort	differential ecosystem function stability of ammonia-oxidizing archaea and bacteria following short-term environmental perturbation
publisher	American Society for Microbiology
publishDate	2020
url	https://doaj.org/article/f2fe67a445754e16b176ffae0d6f829b
work_keys_str_mv	AT junzhao differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation AT yiyumeng differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation AT juliadrewer differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation AT utemskiba differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation AT jamesiprosser differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation AT cecilegubryrangin differentialecosystemfunctionstabilityofammoniaoxidizingarchaeaandbacteriafollowingshorttermenvironmentalperturbation
_version_	1718378134605135872

Differential Ecosystem Function Stability of Ammonia-Oxidizing Archaea and Bacteria following Short-Term Environmental Perturbation

Ejemplares similares