Abstract
While numerous studies have examined the relationship between herbivory and mycorrhizal colonization, few studies have been undertaken on plant species such as oaks that can be dually colonized by both arbuscular mycorrhizas (AM) and ectomycorrhizas (EM). We examined the relationship between insect herbivory by a stem-galling wasp (Cynipidae) and the mycorrhizal colonization of shrub live oaks (Quercus turbinella Greene). We found that oaks with high numbers of galls had 2.4 times higher levels of branch die-back and were 2.3 times more water stressed than oaks with low numbers of galls. Oaks with high numbers of galls supported 21% higher levels of AM colonization but had 53% lower levels of EM colonization than oaks with low numbers of galls. In addition, AM colonization was positively correlated with the number of galls per tree, while EM colonization was negatively correlated with the number of galls per tree. These findings suggest that there is a dynamic relationship between stem-galling wasps and the AM and EM mutualists of shrub live oak.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1349-1353 |
| Number of pages | 5 |
| Journal | Canadian Journal of Botany |
| Volume | 83 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2005 |
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Keywords
- Arbuscular mycorrhizas
- Dual colonization
- Ectomycorrhizas
- Galling insects
- Herbivory
- Shrub live oak
ASJC Scopus subject areas
- Plant Science
Cite this
The relationship between stem-galling wasps and mycorrhizal colonization of Quercus turbinella. / Mueller, Rebecca C.; Sthultz, Christopher M.; Martinez, Theodore; Gehring, Catherine A; Whitham, Thomas G.
In: Canadian Journal of Botany, Vol. 83, No. 10, 10.2005, p. 1349-1353.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The relationship between stem-galling wasps and mycorrhizal colonization of Quercus turbinella
AU - Mueller, Rebecca C.
AU - Sthultz, Christopher M.
AU - Martinez, Theodore
AU - Gehring, Catherine A
AU - Whitham, Thomas G
PY - 2005/10
Y1 - 2005/10
N2 - While numerous studies have examined the relationship between herbivory and mycorrhizal colonization, few studies have been undertaken on plant species such as oaks that can be dually colonized by both arbuscular mycorrhizas (AM) and ectomycorrhizas (EM). We examined the relationship between insect herbivory by a stem-galling wasp (Cynipidae) and the mycorrhizal colonization of shrub live oaks (Quercus turbinella Greene). We found that oaks with high numbers of galls had 2.4 times higher levels of branch die-back and were 2.3 times more water stressed than oaks with low numbers of galls. Oaks with high numbers of galls supported 21% higher levels of AM colonization but had 53% lower levels of EM colonization than oaks with low numbers of galls. In addition, AM colonization was positively correlated with the number of galls per tree, while EM colonization was negatively correlated with the number of galls per tree. These findings suggest that there is a dynamic relationship between stem-galling wasps and the AM and EM mutualists of shrub live oak.
AB - While numerous studies have examined the relationship between herbivory and mycorrhizal colonization, few studies have been undertaken on plant species such as oaks that can be dually colonized by both arbuscular mycorrhizas (AM) and ectomycorrhizas (EM). We examined the relationship between insect herbivory by a stem-galling wasp (Cynipidae) and the mycorrhizal colonization of shrub live oaks (Quercus turbinella Greene). We found that oaks with high numbers of galls had 2.4 times higher levels of branch die-back and were 2.3 times more water stressed than oaks with low numbers of galls. Oaks with high numbers of galls supported 21% higher levels of AM colonization but had 53% lower levels of EM colonization than oaks with low numbers of galls. In addition, AM colonization was positively correlated with the number of galls per tree, while EM colonization was negatively correlated with the number of galls per tree. These findings suggest that there is a dynamic relationship between stem-galling wasps and the AM and EM mutualists of shrub live oak.
KW - Arbuscular mycorrhizas
KW - Dual colonization
KW - Ectomycorrhizas
KW - Galling insects
KW - Herbivory
KW - Shrub live oak
UR - http://www.scopus.com/inward/record.url?scp=33645674085&partnerID=8YFLogxK
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U2 - 10.1139/b05-105
DO - 10.1139/b05-105
M3 - Article
VL - 83
SP - 1349
EP - 1353
JO - Botany
JF - Botany
SN - 1916-2790
IS - 10
ER -