SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:oru-37410"
 

Sökning: onr:"swepub:oai:DiVA.org:oru-37410" > Chitin and ergoster...

Chitin and ergosterol combined to measure total and living fungal biomass in ectomycorrhizas

Ekblad, Alf (författare)
Swedish University of Agricultural Sciences, Umeå, Sweden
Wallander, Håkan (författare)
Lund University, Lund, Sweden
Näsholm, Torgny (författare)
Swedish University of Agricultural Sciences, Umeå, Sweden
 (creator_code:org_t)
Wiley, 1998
1998
Engelska.
Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 138:1, s. 143-149
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • We have studied the chitin and ergosterol contents of ectomycorrhizal roots in three sets of experiments to evaluate them as indicators of fungal biomass. The first set of experiments showed that ageing had a marked effect on ergosterol concentrations. The ergosterol content of 7-month-old, brown, shrunken Pinus sylvestris L.–Paxillus involutus (Fr.) Fr. mycorrhizas was found to be only 10% of that found in white, turgid, 1- or 4-month-old specimens. This supports the hypothesis that the compound is a good indicator of living fungal biomass. Ageing had a lesser effect on chitin concentrations since the chitin levels found in 7-month-old mycorrhizas were still 60% of the levels found in 1- and 4-month-old specimens.Consequently, the chitin∶ergosterol ratio increased from about 14 to 19 in 1- and 4-month-old mycorrhizas respectively to about 110 in 7-month-old mycorrhizas. In the second set of experiments, we found that variation in plant growth had no effect on the chitin∶ergosterol ratio in whole root systems of either Alnus incana (L.) Moench or Pinus sylvestris mycorrhizal with Paxillus involutus. In the third set of experiments, we found a constant relationship between the two marker concentrations in 10-month-old root systems of Pinus sylvestris, regardless of fungal species involved, using Paxillus involutus, Piloderma croceum Erikss. & Hjorts and Suillus variegatus (Fr.) O. Kuntze as test organisms. Taken together, the results of this study suggest that both chitin and ergosterol give reliable, but different, relative measures of fungal biomass in mycorrhizal roots. Furthermore, we demonstrate that, in combination, the two chemical markers can be used to estimate both total and living fungal biomass (derived from the chitin∶ergosterol ratio).

Ämnesord

NATURVETENSKAP  -- Biologi -- Botanik (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Botany (hsv//eng)

Nyckelord

Chitin; ectomycorrhiza; ergosterol; fungal biomass; glucosamine; HPLC

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...
Ekblad, Alf
Wallander, Håkan
Näsholm, Torgny
Om ämnet
NATURVETENSKAP
NATURVETENSKAP
och Biologi
och Botanik
Artiklar i publikationen
New Phytologist
Av lärosätet
Örebro universitet

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy