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Fungal and bacterial growth in soil with plantmaterials of different C/N ratios

Rousk, Johannes LU and Bååth, Erland LU (2007) In FEMS Microbiology Ecology 62(3). p.258-267
Abstract
Fungal (acetate-in-ergosterol incorporation) and bacterial (leucine/thymidine

incorporation) growth resulting from alfalfa (C/N = 15) and barley straw

(C/N = 75) addition was studied in soil microcosms for 64 days. Nitrogen

amendments were used to compensate for the C/N difference between the

substrates. Fungal growth increased to a maximum after 3–7 days, at five to eight

times the controls, following the addition of straw, and three to four times the

controls following the addition of alfalfa. After 20–30 days, the fungal growth rate

converged with the controls, resulting in a cumulative fungal growth two to three

times the controls following straw addition and about... (More)
Fungal (acetate-in-ergosterol incorporation) and bacterial (leucine/thymidine

incorporation) growth resulting from alfalfa (C/N = 15) and barley straw

(C/N = 75) addition was studied in soil microcosms for 64 days. Nitrogen

amendments were used to compensate for the C/N difference between the

substrates. Fungal growth increased to a maximum after 3–7 days, at five to eight

times the controls, following the addition of straw, and three to four times the

controls following the addition of alfalfa. After 20–30 days, the fungal growth rate

converged with the controls, resulting in a cumulative fungal growth two to three

times the controls following straw addition and about 20% higher than

the controls following alfalfa addition. The bacterial growth rate reached rates five

times the controls following alfalfa addition and twice that of the controls

following straw addition after 3–7 days. It remained elevated after 64 days. The

cumulative bacterial growth was two and four times the controls following straw

and alfalfa addition, respectively. A negative correlation was found between

N addition and bacterial growth, while N stimulated fungal growth. Thus, the

C/N ratio of the additions (substrate and extra N) could not entirely explain the

different results regarding fungal and bacterial growths. Respiration was not always

related to the combined growth of the microorganisms, emphasizing the requirement

for a better understanding of growth efficiencies of fungi and bacteria. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
leucine/ thymidine incorporation, acetate-in-ergosterol incorporation, fungal and bacterial growth in soil, C/N ratio, ergosterol, phospholipid fatty acid.
in
FEMS Microbiology Ecology
volume
62
issue
3
pages
258 - 267
publisher
Elsevier
external identifiers
  • wos:000250761400003
  • scopus:35948951661
ISSN
1574-6941
DOI
10.1111/j.1574-6941.2007.00398.x
project
Microbial carbon-use efficiency
Carbon drivers and microbial agents of soil respiration
Effect of environmental factors on fungal and bacterial growth in soil
Interaction between fungi and bacteria in soil
language
English
LU publication?
yes
id
85bd5428-6377-4ed6-b82f-1e329e050158 (old id 628799)
date added to LUP
2007-12-11 12:54:57
date last changed
2017-10-01 04:52:09
@article{85bd5428-6377-4ed6-b82f-1e329e050158,
  abstract     = {Fungal (acetate-in-ergosterol incorporation) and bacterial (leucine/thymidine<br/><br>
incorporation) growth resulting from alfalfa (C/N = 15) and barley straw<br/><br>
(C/N = 75) addition was studied in soil microcosms for 64 days. Nitrogen<br/><br>
amendments were used to compensate for the C/N difference between the<br/><br>
substrates. Fungal growth increased to a maximum after 3–7 days, at five to eight<br/><br>
times the controls, following the addition of straw, and three to four times the<br/><br>
controls following the addition of alfalfa. After 20–30 days, the fungal growth rate<br/><br>
converged with the controls, resulting in a cumulative fungal growth two to three<br/><br>
times the controls following straw addition and about 20% higher than<br/><br>
the controls following alfalfa addition. The bacterial growth rate reached rates five<br/><br>
times the controls following alfalfa addition and twice that of the controls<br/><br>
following straw addition after 3–7 days. It remained elevated after 64 days. The<br/><br>
cumulative bacterial growth was two and four times the controls following straw<br/><br>
and alfalfa addition, respectively. A negative correlation was found between<br/><br>
N addition and bacterial growth, while N stimulated fungal growth. Thus, the<br/><br>
C/N ratio of the additions (substrate and extra N) could not entirely explain the<br/><br>
different results regarding fungal and bacterial growths. Respiration was not always<br/><br>
related to the combined growth of the microorganisms, emphasizing the requirement<br/><br>
for a better understanding of growth efficiencies of fungi and bacteria.},
  author       = {Rousk, Johannes and Bååth, Erland},
  issn         = {1574-6941},
  keyword      = {leucine/ thymidine incorporation,acetate-in-ergosterol incorporation,fungal and bacterial growth in soil,C/N ratio,ergosterol,phospholipid fatty acid.},
  language     = {eng},
  number       = {3},
  pages        = {258--267},
  publisher    = {Elsevier},
  series       = {FEMS Microbiology Ecology},
  title        = {Fungal and bacterial growth in soil with plantmaterials of different C/N ratios},
  url          = {http://dx.doi.org/10.1111/j.1574-6941.2007.00398.x},
  volume       = {62},
  year         = {2007},
}