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Effects of liming on ectomycorrhizal fungi infecting Pinus sylvestris L. 2. Growth-rates in pure culture at different ph values compared to growth-rates in symbiosis with the host plant

Erland, Susanne LU ; Söderström, Bengt LU and Andersson, Solbritt (1990) In New Phytologist 115(4). p.683-688
Abstract
Growth rates of ectomycorrhizal fungi were measured in pure culture at pH 3-8 on MMN-agar and sterilized peat, with and without nutrients added. Mycorrhizas were synthesized with Pinus sylvestris L. seedlings and the growth rate of the external mycelium was measured in peat at pH 3.8 and 7.3. The fungi were three isolates of Piloderma croceum Erikss. & Hjorts., two isolates of an unidentified (pink) mycorrhizal type and one isolate of another unidentified (white long) mycorrhizal type, all isolated from P. sylvestris roots. All three fungi showed much higher (2-5 times) growth rates when grown as symbionts than when grown in pure culture. The P. croceum isolates also grew as symbionts at pH 7.3, where no growth occurred in pure... (More)
Growth rates of ectomycorrhizal fungi were measured in pure culture at pH 3-8 on MMN-agar and sterilized peat, with and without nutrients added. Mycorrhizas were synthesized with Pinus sylvestris L. seedlings and the growth rate of the external mycelium was measured in peat at pH 3.8 and 7.3. The fungi were three isolates of Piloderma croceum Erikss. & Hjorts., two isolates of an unidentified (pink) mycorrhizal type and one isolate of another unidentified (white long) mycorrhizal type, all isolated from P. sylvestris roots. All three fungi showed much higher (2-5 times) growth rates when grown as symbionts than when grown in pure culture. The P. croceum isolates also grew as symbionts at pH 7.3, where no growth occurred in pure culture. These findings emphasize the danger of generalizing from data obtained in pure culture studies to explain what may happen when fungi grow in symbiosis with host plants. Generally, growth rates in pure culture were higher and the pH tolerance levels were wider on agar than on peat. The exceptions were one P. croceum isolate, which had the fastest pure culture growth rate on peat with MMN, and the pink isolates, which grew at higher pH on peat than on agar. There were no significant differences between growth on peat with and without MMN. (Less)
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published
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in
New Phytologist
volume
115
issue
4
pages
683 - 688
publisher
Wiley-Blackwell
ISSN
1469-8137
language
English
LU publication?
yes
id
7d1e139c-1a9a-453c-886a-8071934a332b (old id 2226366)
alternative location
http://www.jstor.org/stable/2556810
date added to LUP
2012-01-11 14:21:48
date last changed
2016-04-15 18:55:41
@article{7d1e139c-1a9a-453c-886a-8071934a332b,
  abstract     = {Growth rates of ectomycorrhizal fungi were measured in pure culture at pH 3-8 on MMN-agar and sterilized peat, with and without nutrients added. Mycorrhizas were synthesized with Pinus sylvestris L. seedlings and the growth rate of the external mycelium was measured in peat at pH 3.8 and 7.3. The fungi were three isolates of Piloderma croceum Erikss. & Hjorts., two isolates of an unidentified (pink) mycorrhizal type and one isolate of another unidentified (white long) mycorrhizal type, all isolated from P. sylvestris roots. All three fungi showed much higher (2-5 times) growth rates when grown as symbionts than when grown in pure culture. The P. croceum isolates also grew as symbionts at pH 7.3, where no growth occurred in pure culture. These findings emphasize the danger of generalizing from data obtained in pure culture studies to explain what may happen when fungi grow in symbiosis with host plants. Generally, growth rates in pure culture were higher and the pH tolerance levels were wider on agar than on peat. The exceptions were one P. croceum isolate, which had the fastest pure culture growth rate on peat with MMN, and the pink isolates, which grew at higher pH on peat than on agar. There were no significant differences between growth on peat with and without MMN.},
  author       = {Erland, Susanne and Söderström, Bengt and Andersson, Solbritt},
  issn         = {1469-8137},
  language     = {eng},
  number       = {4},
  pages        = {683--688},
  publisher    = {Wiley-Blackwell},
  series       = {New Phytologist},
  title        = {Effects of liming on ectomycorrhizal fungi infecting Pinus sylvestris L. 2. Growth-rates in pure culture at different ph values compared to growth-rates in symbiosis with the host plant},
  volume       = {115},
  year         = {1990},
}