Mean annual temperature influences local fine root proliferation and arbuscular mycorrhizal colonization in a tropical wet forest.
arbuscular mycorrhizal fungi
fine roots
mean annual temperature
nitrogen availability
root proliferation
tropical montane wet forest
Journal
Ecology and evolution
ISSN: 2045-7758
Titre abrégé: Ecol Evol
Pays: England
ID NLM: 101566408
Informations de publication
Date de publication:
Sep 2020
Sep 2020
Historique:
received:
04
10
2019
revised:
11
05
2020
accepted:
21
05
2020
entrez:
2
10
2020
pubmed:
3
10
2020
medline:
3
10
2020
Statut:
epublish
Résumé
Mean annual temperature (MAT) is an influential climate factor affecting the bioavailability of growth-limiting nutrients nitrogen (N) and phosphorus (P). In tropical montane wet forests, warmer MAT drives higher N bioavailability, while patterns of P availability are inconsistent across MAT. Two important nutrient acquisition strategies, fine root proliferation into bulk soil and root association with arbuscular mycorrhizal fungi, are dependent on C availability to the plant via primary production. The case study presented here tests whether variation in bulk soil N bioavailability across a tropical montane wet forest elevation gradient (5.2°C MAT range) influences (a) morphology fine root proliferation into soil patches with elevated N, P, and N+P relative to background soil and (b) arbuscular mycorrhizal fungal (AMF) colonization of fine roots in patches. We created a fully factorial fertilized root ingrowth core design (N, P, N+P, unfertilized control) representing soil patches with elevated N and P bioavailability relative to background bulk soil. Our results show that percent AMF colonization of roots increased with MAT (
Identifiants
pubmed: 33005336
doi: 10.1002/ece3.6561
pii: ECE36561
pmc: PMC7520179
doi:
Types de publication
Journal Article
Langues
eng
Pagination
9635-9646Informations de copyright
© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
Déclaration de conflit d'intérêts
We declare no competing personal, financial, or institutional competing interests.
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