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Interactive influence of light intensity and soil fertility on root-associated arbuscular mycorrhizal fungi

Shi, Guoxi; Liu, Yongjun; Johnson, Nancy Collins; Olsson, Pål Axel LU ; Mao, Lin; Cheng, Gang; Jiang, Shengjing; An, Lizhe; Du, Guozhen and Feng, Huyuan (2014) In Plant and Soil 378(1-2). p.173-188
Abstract
Soil nutrients and light have major effects on the economics of arbuscular mycorrhizal (AM) symbioses. This study tests the main and interactive effects of soil fertility and light on AM fungal community. We conducted a 3 year mesocosm experiment with a full two factorial design: light (full light or shade) and soil fertility (unfertilized or fertilized), on the Qinghai-Tibetan Plateau. Plant traits, soil characteristics and the AM fungal communities inside roots and in soils were measured. Shade reduced AM colonization of roots, fertilization reduced the hyphal abundance in the soil, and both factors reduced species richness of AM fungi inside plant roots. Fertilization exacerbated the negative impacts of shade on AM fungal abundance and... (More)
Soil nutrients and light have major effects on the economics of arbuscular mycorrhizal (AM) symbioses. This study tests the main and interactive effects of soil fertility and light on AM fungal community. We conducted a 3 year mesocosm experiment with a full two factorial design: light (full light or shade) and soil fertility (unfertilized or fertilized), on the Qinghai-Tibetan Plateau. Plant traits, soil characteristics and the AM fungal communities inside roots and in soils were measured. Shade reduced AM colonization of roots, fertilization reduced the hyphal abundance in the soil, and both factors reduced species richness of AM fungi inside plant roots. Fertilization exacerbated the negative impacts of shade on AM fungal abundance and diversity. We observed 15 phylotypes of AM fungi inside roots and ten morphotypes of AM fungal spores in the soil. Taxa responded differently to shade and fertilization and there was little congruence between the responses of fungi inside the roots and in the spore community. Our findings indicate that both shade and fertilization reduce the abundance of AM fungi, but the two factors have different effects on the quality of plant roots as habitat for AM fungi. (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
Soil fungi, Mesocosm, Light, Soil fertility, Functional equilibrium
in
Plant and Soil
volume
378
issue
1-2
pages
173 - 188
publisher
Springer
external identifiers
  • wos:000334514000012
  • scopus:84898890690
ISSN
0032-079X
DOI
10.1007/s11104-014-2022-z
project
BECC
language
English
LU publication?
yes
id
8b7ffa3f-ef7f-4f8a-bd7c-d65b2d0adcbc (old id 4488330)
date added to LUP
2014-06-23 14:11:55
date last changed
2017-07-09 04:00:35
@article{8b7ffa3f-ef7f-4f8a-bd7c-d65b2d0adcbc,
  abstract     = {Soil nutrients and light have major effects on the economics of arbuscular mycorrhizal (AM) symbioses. This study tests the main and interactive effects of soil fertility and light on AM fungal community. We conducted a 3 year mesocosm experiment with a full two factorial design: light (full light or shade) and soil fertility (unfertilized or fertilized), on the Qinghai-Tibetan Plateau. Plant traits, soil characteristics and the AM fungal communities inside roots and in soils were measured. Shade reduced AM colonization of roots, fertilization reduced the hyphal abundance in the soil, and both factors reduced species richness of AM fungi inside plant roots. Fertilization exacerbated the negative impacts of shade on AM fungal abundance and diversity. We observed 15 phylotypes of AM fungi inside roots and ten morphotypes of AM fungal spores in the soil. Taxa responded differently to shade and fertilization and there was little congruence between the responses of fungi inside the roots and in the spore community. Our findings indicate that both shade and fertilization reduce the abundance of AM fungi, but the two factors have different effects on the quality of plant roots as habitat for AM fungi.},
  author       = {Shi, Guoxi and Liu, Yongjun and Johnson, Nancy Collins and Olsson, Pål Axel and Mao, Lin and Cheng, Gang and Jiang, Shengjing and An, Lizhe and Du, Guozhen and Feng, Huyuan},
  issn         = {0032-079X},
  keyword      = {Soil fungi,Mesocosm,Light,Soil fertility,Functional equilibrium},
  language     = {eng},
  number       = {1-2},
  pages        = {173--188},
  publisher    = {Springer},
  series       = {Plant and Soil},
  title        = {Interactive influence of light intensity and soil fertility on root-associated arbuscular mycorrhizal fungi},
  url          = {http://dx.doi.org/10.1007/s11104-014-2022-z},
  volume       = {378},
  year         = {2014},
}