NDLI: Mycorrhizae and soil phosphorus affect growth of Celastrus orbiculatus

Content Provider	Springer Nature Link
Author	Lett, Carly N. DeWald, Laura E. Horton, Jonathan
Copyright Year	2011
Abstract	Celastrus orbiculatus is an exotic liana that exploits disturbed areas in the eastern United States and once established, can invade into relatively undisturbed forest ecosystems. Mechanisms facilitating its invasion are not fully understood, including whether associations with mycorrhizal fungi are related to its invasion success. We grew C. orbiculatus in a greenhouse and compared growth responses when mycorrhizal fungi or a fungistatic were added to growth media that was either phosphorus-limiting or non-limiting. Results indicated C. orbiculatus forms association with native endomycorrhizal but not with native ectomycorrhizal fungi regardless of phosphorus level. Plants grown with sufficient phosphorus had significantly higher above-ground morphological and physiological traits but significantly lower root biomass compared to plants grown in low phosphorus conditions. Although above-ground traits did not vary significantly between mycorrhizal versus fungistatic added treatments, root biomass was significantly less in plants inoculated with mycorrhizae compared to plants receiving fungistatic. Under low phosphorus conditions, mycorrhizae appeared to be beneficial to the plant although being mycorrhizal did not fully compensate for insufficient phosphorous in the greenhouse situation where pot size limited soil exploration. Our results suggest that in the presence of mycorrhizae or sufficient phosphorus, C. orbiculatus can respond by preferentially allocating energy to above-ground growth, thus supporting its liana growth form onto trees and allowing the exotic to outcompete native species for light resources. If mycorrhizal fungi aid in acquisition of phosphorus, this association could be related to the invasion success of C. orbiculatus.
Starting Page	2339
Ending Page	2350
Page Count	12
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	13
Issue Number	10
e-ISSN	15731464
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-07-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Exotic plant Invasion Celastrus orbiculatus Liana Mycorrhizae Phosphorus Plant Sciences Freshwater & Marine Ecology Developmental Biology Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

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