Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.

Plant-microbial interactions alter C and N balance in the rhizosphere and affect the microbial carbon use efficiency (CUE)-the fundamental characteristic of microbial metabolism. Estimation of CUE in microbial hotspots with high dynamics of activity and changes of microbial physiological state from...

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Autores principales:	Evgenia Blagodatskaya, Sergey Blagodatsky, Traute-Heidi Anderson, Yakov Kuzyakov
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4b2f09121db444a4a434d2faf4e93d76
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spelling	oai:doaj.org-article:4b2f09121db444a4a434d2faf4e93d762021-11-18T08:23:56ZMicrobial growth and carbon use efficiency in the rhizosphere and root-free soil.1932-620310.1371/journal.pone.0093282https://doaj.org/article/4b2f09121db444a4a434d2faf4e93d762014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24722409/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Plant-microbial interactions alter C and N balance in the rhizosphere and affect the microbial carbon use efficiency (CUE)-the fundamental characteristic of microbial metabolism. Estimation of CUE in microbial hotspots with high dynamics of activity and changes of microbial physiological state from dormancy to activity is a challenge in soil microbiology. We analyzed respiratory activity, microbial DNA content and CUE by manipulation the C and nutrients availability in the soil under Beta vulgaris. All measurements were done in root-free and rhizosphere soil under steady-state conditions and during microbial growth induced by addition of glucose. Microorganisms in the rhizosphere and root-free soil differed in their CUE dynamics due to varying time delays between respiration burst and DNA increase. Constant CUE in an exponentially-growing microbial community in rhizosphere demonstrated the balanced growth. In contrast, the CUE in the root-free soil increased more than three times at the end of exponential growth and was 1.5 times higher than in the rhizosphere. Plants alter the dynamics of microbial CUE by balancing the catabolic and anabolic processes, which were decoupled in the root-free soil. The effects of N and C availability on CUE in rhizosphere and root-free soil are discussed.Evgenia BlagodatskayaSergey BlagodatskyTraute-Heidi AndersonYakov KuzyakovPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e93282 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Evgenia Blagodatskaya Sergey Blagodatsky Traute-Heidi Anderson Yakov Kuzyakov Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
description	Plant-microbial interactions alter C and N balance in the rhizosphere and affect the microbial carbon use efficiency (CUE)-the fundamental characteristic of microbial metabolism. Estimation of CUE in microbial hotspots with high dynamics of activity and changes of microbial physiological state from dormancy to activity is a challenge in soil microbiology. We analyzed respiratory activity, microbial DNA content and CUE by manipulation the C and nutrients availability in the soil under Beta vulgaris. All measurements were done in root-free and rhizosphere soil under steady-state conditions and during microbial growth induced by addition of glucose. Microorganisms in the rhizosphere and root-free soil differed in their CUE dynamics due to varying time delays between respiration burst and DNA increase. Constant CUE in an exponentially-growing microbial community in rhizosphere demonstrated the balanced growth. In contrast, the CUE in the root-free soil increased more than three times at the end of exponential growth and was 1.5 times higher than in the rhizosphere. Plants alter the dynamics of microbial CUE by balancing the catabolic and anabolic processes, which were decoupled in the root-free soil. The effects of N and C availability on CUE in rhizosphere and root-free soil are discussed.
format	article
author	Evgenia Blagodatskaya Sergey Blagodatsky Traute-Heidi Anderson Yakov Kuzyakov
author_facet	Evgenia Blagodatskaya Sergey Blagodatsky Traute-Heidi Anderson Yakov Kuzyakov
author_sort	Evgenia Blagodatskaya
title	Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
title_short	Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
title_full	Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
title_fullStr	Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
title_full_unstemmed	Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
title_sort	microbial growth and carbon use efficiency in the rhizosphere and root-free soil.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/4b2f09121db444a4a434d2faf4e93d76
work_keys_str_mv	AT evgeniablagodatskaya microbialgrowthandcarbonuseefficiencyintherhizosphereandrootfreesoil AT sergeyblagodatsky microbialgrowthandcarbonuseefficiencyintherhizosphereandrootfreesoil AT trauteheidianderson microbialgrowthandcarbonuseefficiencyintherhizosphereandrootfreesoil AT yakovkuzyakov microbialgrowthandcarbonuseefficiencyintherhizosphereandrootfreesoil
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Microbial growth and carbon use efficiency in the rhizosphere and root-free soil.

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