Mycorrhizal promotion of host stomatal conductance in relation to irradiance and temperature

Robert M. Augé, Jennifer L. Moore, David M. Sylvia, Keunho Cho

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Colonization of roots and soil by arbuscular mycorrhizal (AM) fungi sometimes promotes stomatal conductance (gs) of the host plant, but scientists have had difficulty predicting or manipulating the response. Our objective was to test whether the magnitude of AM influence on gs is related to environmental conditions: irradiance, air temperature or leaf temperature. Stomatal conductances of two groups of uncolonized sorghum plants were compared to gs of plants colonized by Glomus intraradices (Gi) or Gigaspora margarita (Gm) in 31 morning and afternoon periods under naturally varying greenhouse conditions. Stomatal conductance of Gi and Gm plants was often markedly higher than gs of similarly sized nonAM plants. AM promotion of gs was minimal at the lowest irradiances and lowest air and leaf temperatures, but was substantial at intermediate irradiance and temperatures. AM promotion was again low or absent at the highest irradiances and temperatures. Magnitude of AM promotion of gs was not a function of absolute gs. Promotion of gs by Gi and Gm was remarkably similar. Differing phosphorus fertilization did not affect g s.

Original languageEnglish (US)
Pages (from-to)85-92
Number of pages8
JournalMycorrhiza
Volume14
Issue number2
DOIs
StatePublished - Apr 1 2004

Fingerprint

stomatal conductance
Gigaspora margarita
irradiance
Glomus intraradices
Temperature
temperature
Air
sorghum
Sorghum
mycorrhizal fungi
host plant
leaves
air temperature
colonization
host plants
Fertilization
Phosphorus
environmental conditions
fungus
phosphorus

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Molecular Biology
  • Genetics
  • Plant Science

Cite this

Augé, Robert M. ; Moore, Jennifer L. ; Sylvia, David M. ; Cho, Keunho. / Mycorrhizal promotion of host stomatal conductance in relation to irradiance and temperature. In: Mycorrhiza. 2004 ; Vol. 14, No. 2. pp. 85-92.
@article{616ab3e165694962b32c241133c5c5fd,
title = "Mycorrhizal promotion of host stomatal conductance in relation to irradiance and temperature",
abstract = "Colonization of roots and soil by arbuscular mycorrhizal (AM) fungi sometimes promotes stomatal conductance (gs) of the host plant, but scientists have had difficulty predicting or manipulating the response. Our objective was to test whether the magnitude of AM influence on gs is related to environmental conditions: irradiance, air temperature or leaf temperature. Stomatal conductances of two groups of uncolonized sorghum plants were compared to gs of plants colonized by Glomus intraradices (Gi) or Gigaspora margarita (Gm) in 31 morning and afternoon periods under naturally varying greenhouse conditions. Stomatal conductance of Gi and Gm plants was often markedly higher than gs of similarly sized nonAM plants. AM promotion of gs was minimal at the lowest irradiances and lowest air and leaf temperatures, but was substantial at intermediate irradiance and temperatures. AM promotion was again low or absent at the highest irradiances and temperatures. Magnitude of AM promotion of gs was not a function of absolute gs. Promotion of gs by Gi and Gm was remarkably similar. Differing phosphorus fertilization did not affect g s.",
author = "Aug{\'e}, {Robert M.} and Moore, {Jennifer L.} and Sylvia, {David M.} and Keunho Cho",
year = "2004",
month = "4",
day = "1",
doi = "10.1007/s00572-003-0241-x",
language = "English (US)",
volume = "14",
pages = "85--92",
journal = "Mycorrhiza",
issn = "0940-6360",
publisher = "Springer Verlag",
number = "2",

}

Mycorrhizal promotion of host stomatal conductance in relation to irradiance and temperature. / Augé, Robert M.; Moore, Jennifer L.; Sylvia, David M.; Cho, Keunho.

In: Mycorrhiza, Vol. 14, No. 2, 01.04.2004, p. 85-92.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mycorrhizal promotion of host stomatal conductance in relation to irradiance and temperature

AU - Augé, Robert M.

AU - Moore, Jennifer L.

AU - Sylvia, David M.

AU - Cho, Keunho

PY - 2004/4/1

Y1 - 2004/4/1

N2 - Colonization of roots and soil by arbuscular mycorrhizal (AM) fungi sometimes promotes stomatal conductance (gs) of the host plant, but scientists have had difficulty predicting or manipulating the response. Our objective was to test whether the magnitude of AM influence on gs is related to environmental conditions: irradiance, air temperature or leaf temperature. Stomatal conductances of two groups of uncolonized sorghum plants were compared to gs of plants colonized by Glomus intraradices (Gi) or Gigaspora margarita (Gm) in 31 morning and afternoon periods under naturally varying greenhouse conditions. Stomatal conductance of Gi and Gm plants was often markedly higher than gs of similarly sized nonAM plants. AM promotion of gs was minimal at the lowest irradiances and lowest air and leaf temperatures, but was substantial at intermediate irradiance and temperatures. AM promotion was again low or absent at the highest irradiances and temperatures. Magnitude of AM promotion of gs was not a function of absolute gs. Promotion of gs by Gi and Gm was remarkably similar. Differing phosphorus fertilization did not affect g s.

AB - Colonization of roots and soil by arbuscular mycorrhizal (AM) fungi sometimes promotes stomatal conductance (gs) of the host plant, but scientists have had difficulty predicting or manipulating the response. Our objective was to test whether the magnitude of AM influence on gs is related to environmental conditions: irradiance, air temperature or leaf temperature. Stomatal conductances of two groups of uncolonized sorghum plants were compared to gs of plants colonized by Glomus intraradices (Gi) or Gigaspora margarita (Gm) in 31 morning and afternoon periods under naturally varying greenhouse conditions. Stomatal conductance of Gi and Gm plants was often markedly higher than gs of similarly sized nonAM plants. AM promotion of gs was minimal at the lowest irradiances and lowest air and leaf temperatures, but was substantial at intermediate irradiance and temperatures. AM promotion was again low or absent at the highest irradiances and temperatures. Magnitude of AM promotion of gs was not a function of absolute gs. Promotion of gs by Gi and Gm was remarkably similar. Differing phosphorus fertilization did not affect g s.

UR - http://www.scopus.com/inward/record.url?scp=2442428348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442428348&partnerID=8YFLogxK

U2 - 10.1007/s00572-003-0241-x

DO - 10.1007/s00572-003-0241-x

M3 - Article

C2 - 12743838

AN - SCOPUS:2442428348

VL - 14

SP - 85

EP - 92

JO - Mycorrhiza

JF - Mycorrhiza

SN - 0940-6360

IS - 2

ER -