Soil microarthropods alter the growth and morphology of fungi and fine roots of Chamaecyparis obtusa

Takuo Hishi, Hiroshi Takeda

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The growth rate and morphological characteristics of fine root systems are important both for nutrient absorption by trees and for material cycling in forest soil ecosystems. Interactions among soil organisms, such as fungi and fungivorous microarthropods, may be important in influencing tree fine root growth and morphology. We carried out a soil microarthropod depletion experiment using insecticide to assess the indirect effects of soil microarthropods on the growth and morphology of fine roots in a warm temperate forest dominated by the arbuscular mycorrhizal conifer Chamaecyparis obtusa. Insecticide application resulted in differences in hyphal diameter, the number of small-sized spores and arbuscular mycorrhizal fungal (AMF) colonization, but did not affect fungal biomass. Community structures of collembola and oribatida were different among treatments, suggesting that the balance between arbuscular mycorrhizal and saprobic fungi may have been different among treatments. Insecticide application increased fine root growth and decreased specific root length (SRL). Arbuscular mycorrhizal colonization rate (% AM) was strongly correlated with fine root growth and SRL. Water contents correlated with fine root growth, SRL, and % AM. These results suggest that soil microarthropods might indirectly affect soil water uptake by altering interactive functions between mycorrhizal fungi and fine roots of C. obtusa.

Original languageEnglish
Pages (from-to)97-110
Number of pages14
JournalPedobiologia
Volume52
Issue number2
DOIs
Publication statusPublished - Oct 10 2008

Fingerprint

Chamaecyparis obtusa
fine root
fungus
fungi
root growth
soil
insecticide
pesticide application
colonization
soil ecosystem
Sarcoptiformes
water uptake
Collembola
temperate forests
fine roots
temperate forest
root system
forest ecosystems
forest soils
forest ecosystem

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Soil Science

Cite this

Soil microarthropods alter the growth and morphology of fungi and fine roots of Chamaecyparis obtusa. / Hishi, Takuo; Takeda, Hiroshi.

In: Pedobiologia, Vol. 52, No. 2, 10.10.2008, p. 97-110.

Research output: Contribution to journalArticle

@article{44e2db014be442cd808cd6d796d95cf2,
title = "Soil microarthropods alter the growth and morphology of fungi and fine roots of Chamaecyparis obtusa",
abstract = "The growth rate and morphological characteristics of fine root systems are important both for nutrient absorption by trees and for material cycling in forest soil ecosystems. Interactions among soil organisms, such as fungi and fungivorous microarthropods, may be important in influencing tree fine root growth and morphology. We carried out a soil microarthropod depletion experiment using insecticide to assess the indirect effects of soil microarthropods on the growth and morphology of fine roots in a warm temperate forest dominated by the arbuscular mycorrhizal conifer Chamaecyparis obtusa. Insecticide application resulted in differences in hyphal diameter, the number of small-sized spores and arbuscular mycorrhizal fungal (AMF) colonization, but did not affect fungal biomass. Community structures of collembola and oribatida were different among treatments, suggesting that the balance between arbuscular mycorrhizal and saprobic fungi may have been different among treatments. Insecticide application increased fine root growth and decreased specific root length (SRL). Arbuscular mycorrhizal colonization rate ({\%} AM) was strongly correlated with fine root growth and SRL. Water contents correlated with fine root growth, SRL, and {\%} AM. These results suggest that soil microarthropods might indirectly affect soil water uptake by altering interactive functions between mycorrhizal fungi and fine roots of C. obtusa.",
author = "Takuo Hishi and Hiroshi Takeda",
year = "2008",
month = "10",
day = "10",
doi = "10.1016/j.pedobi.2008.04.003",
language = "English",
volume = "52",
pages = "97--110",
journal = "Pedobiologia",
issn = "0031-4056",
publisher = "Urban und Fischer Verlag Jena",
number = "2",

}

TY - JOUR

T1 - Soil microarthropods alter the growth and morphology of fungi and fine roots of Chamaecyparis obtusa

AU - Hishi, Takuo

AU - Takeda, Hiroshi

PY - 2008/10/10

Y1 - 2008/10/10

N2 - The growth rate and morphological characteristics of fine root systems are important both for nutrient absorption by trees and for material cycling in forest soil ecosystems. Interactions among soil organisms, such as fungi and fungivorous microarthropods, may be important in influencing tree fine root growth and morphology. We carried out a soil microarthropod depletion experiment using insecticide to assess the indirect effects of soil microarthropods on the growth and morphology of fine roots in a warm temperate forest dominated by the arbuscular mycorrhizal conifer Chamaecyparis obtusa. Insecticide application resulted in differences in hyphal diameter, the number of small-sized spores and arbuscular mycorrhizal fungal (AMF) colonization, but did not affect fungal biomass. Community structures of collembola and oribatida were different among treatments, suggesting that the balance between arbuscular mycorrhizal and saprobic fungi may have been different among treatments. Insecticide application increased fine root growth and decreased specific root length (SRL). Arbuscular mycorrhizal colonization rate (% AM) was strongly correlated with fine root growth and SRL. Water contents correlated with fine root growth, SRL, and % AM. These results suggest that soil microarthropods might indirectly affect soil water uptake by altering interactive functions between mycorrhizal fungi and fine roots of C. obtusa.

AB - The growth rate and morphological characteristics of fine root systems are important both for nutrient absorption by trees and for material cycling in forest soil ecosystems. Interactions among soil organisms, such as fungi and fungivorous microarthropods, may be important in influencing tree fine root growth and morphology. We carried out a soil microarthropod depletion experiment using insecticide to assess the indirect effects of soil microarthropods on the growth and morphology of fine roots in a warm temperate forest dominated by the arbuscular mycorrhizal conifer Chamaecyparis obtusa. Insecticide application resulted in differences in hyphal diameter, the number of small-sized spores and arbuscular mycorrhizal fungal (AMF) colonization, but did not affect fungal biomass. Community structures of collembola and oribatida were different among treatments, suggesting that the balance between arbuscular mycorrhizal and saprobic fungi may have been different among treatments. Insecticide application increased fine root growth and decreased specific root length (SRL). Arbuscular mycorrhizal colonization rate (% AM) was strongly correlated with fine root growth and SRL. Water contents correlated with fine root growth, SRL, and % AM. These results suggest that soil microarthropods might indirectly affect soil water uptake by altering interactive functions between mycorrhizal fungi and fine roots of C. obtusa.

UR - http://www.scopus.com/inward/record.url?scp=51349115939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51349115939&partnerID=8YFLogxK

U2 - 10.1016/j.pedobi.2008.04.003

DO - 10.1016/j.pedobi.2008.04.003

M3 - Article

VL - 52

SP - 97

EP - 110

JO - Pedobiologia

JF - Pedobiologia

SN - 0031-4056

IS - 2

ER -