NDLI: Uptake of pulse injected nitrogen by soil microbes and mycorrhizal and non-mycorrhizal plants in a species-diverse subarctic heath ecosystem

Content Provider	Springer Nature Link
Author	Andresen, Louise C. Jonasson, Sven Ström, Lena Michelsen, Anders
Copyright Year	2008
Abstract	$^{15}$N labeled ammonium, glycine or glutamic acid was injected into subarctic heath soil in situ, with the purpose of investigating how the nitrogen added in these pulses was subsequently utilized and cycled in the ecosystem. We analyzed the acquisition of $^{15}$N label in mycorrhizal and non-mycorrhizal plants and in soil microorganisms, in order to reveal probable differences in acquisition patterns between the two functional plant types and between plants and soil microorganisms. Three weeks after the label addition, with the $^{15}$N-forms added with same amount of nitrogen per square meter, we analyzed the $^{15}$N-enrichment in total soil, in soil K$_{2}$SO$_{4}$ (0.5 M) extracts and in the microbial biomass after vacuum-incubation of soil in chloroform and subsequent K$_{2}$SO$_{4}$ extraction. Furthermore the $^{15}$N-enrichment was analyzed in current years leaves of the dominant plant species sampled three, five and 21 days after label addition. The soil microorganisms had very high $^{15}$N recovery from all the N sources compared to plants. Microorganisms incorporated most $^{15}$N from the glutamic acid source, intermediate amounts of $^{15}$N from the glycine source and least $^{15}$N from the NH$_{4}$ $^{+}$ source. In contrast to microorganisms, all ten investigated plant species generally acquired more $^{15}$N label from the NH$_{4}$ $^{+}$ source than from the amino acid sources. Non-mycorrhizal plant species showed higher concentration of $^{15}$N label than mycorrhizal plant species 3 days after labeling, while 21 days after labeling their acquisition of $^{15}$N label from amino acid injection was lower than, and the acquisition of $^{15}$N label from NH$_{4}$ injection was similar to that of the mycorrhizal species. We conclude that the soil microorganisms were more efficient than plants in acquiring pulses of nutrients which, under natural conditions, occur after e.g. freeze–thaw and dry–rewet events, although of smaller size. It also appears that the mycorrhizal plants in the short term may be less efficient than non-mycorrhizal plants in nitrogen acquisition, but in a longer term show larger nitrogen acquisition than non-mycorrhizal plants. However, the differences in $^{15}$N uptake patterns may also be due to differences in leaf longevity and woodiness between plant functional groups.
Starting Page	283
Ending Page	295
Page Count	13
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	313
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-07-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ammonium Amino acid Freeze-thaw cycle Mycorrhiza $^{15}$N Organic nitrogen Plant nitrogen uptake Root biomass Ecology Plant Physiology Soil Science & Conservation Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Nitrogen competition between three dominant plant species and microbes in a temperate grassland

The symbiotic recapture of nitrogen from dead mycorrhizal and non-mycorrhizal roots of tomato plants

Contrasting nitrogen and phosphorus dynamics across an elevational gradient for subarctic tundra heath and meadow vegetation

Root Nitrogen Acquisition and Assimilation

Earthworm (Aporrectodea trapezoides)–mycorrhiza (Glomus intraradices) interaction and nitrogen and phosphorus uptake by maize

Nitrogen Uptake During Fall, Winter and Spring Differs Among Plant Functional Groups in a Subarctic Heath Ecosystem

Potential root depth development and nitrogen uptake by tetraploid bahiagrass hybrids

Freeze–thaw cycle amplitude and freezing rate effects on extractable nitrogen in a temperate old field soil

Release of non-exchangeable $$ {}^{{{\text{15}}}}{\text{NH}}^{{\text{ + }}}_{{\text{4}}} $$ from subgrade, decomposed granite substrates and uptake by non-mycorrhizal and mycorrhizal California native annual grass, Vulpia microstachys

Uptake of pulse injected nitrogen by soil microbes and mycorrhizal and non-mycorrhizal plants in a species-diverse subarctic heath ecosystem

Similar Documents

Nitrogen competition between three dominant plant species and microbes in a temperate grassland

The symbiotic recapture of nitrogen from dead mycorrhizal and non-mycorrhizal roots of tomato plants

Contrasting nitrogen and phosphorus dynamics across an elevational gradient for subarctic tundra heath and meadow vegetation

Root Nitrogen Acquisition and Assimilation

Earthworm (Aporrectodea trapezoides)–mycorrhiza (Glomus intraradices) interaction and nitrogen and phosphorus uptake by maize

Nitrogen Uptake During Fall, Winter and Spring Differs Among Plant Functional Groups in a Subarctic Heath Ecosystem

Potential root depth development and nitrogen uptake by tetraploid bahiagrass hybrids

Freeze–thaw cycle amplitude and freezing rate effects on extractable nitrogen in a temperate old field soil

Release of non-exchangeable $$ {}^{{{\text{15}}}}{\text{NH}}^{{\text{ + }}}_{{\text{4}}} $$ from subgrade, decomposed granite substrates and uptake by non-mycorrhizal and mycorrhizal California native annual grass, Vulpia microstachys

Uptake of pulse injected nitrogen by soil microbes and mycorrhizal and non-mycorrhizal plants in a species-diverse subarctic heath ecosystem