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Mutualism-disrupting allelopathic invader drives carbon stress and vital rate decline in a forest perennial herb.

Brouwer NL, Hale AN, Kalisz S - AoB Plants (2015)

Bottom Line: Over a single growing season, the loss of RFS could reduce a plant's photosynthetic physiology and carbon storage.Alliaria-treated plants exhibit significant overall reductions in total non-structural carbohydrates and have 17 % less storage carbohydrates relative to controls.Together, our results are consistent with the hypothesis that disruption of a ubiquitous mutualism following species invasion creates symptoms of carbon stress for species dependent on RFS.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA brouwern@gmail.com.

No MeSH data available.


Related in: MedlinePlus

Effect of Alliaria on Maianthemum retrogression from flowering to non-flowering. (A) Annual mean difference in retrogression frequency (ES) in Alliaria-ambient and removal plot. Effect size is expressed as an OR and plotted on the log scale. (B) Mean retrogression frequencies in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant effect of Alliaria removal (P < 0.05). Retrogression is calculated conditional on a plant being observed above-ground and not dormant. Sample sizes for 2006 and 2007 were insufficient for vital rate calculation.
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PLV014F4: Effect of Alliaria on Maianthemum retrogression from flowering to non-flowering. (A) Annual mean difference in retrogression frequency (ES) in Alliaria-ambient and removal plot. Effect size is expressed as an OR and plotted on the log scale. (B) Mean retrogression frequencies in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant effect of Alliaria removal (P < 0.05). Retrogression is calculated conditional on a plant being observed above-ground and not dormant. Sample sizes for 2006 and 2007 were insufficient for vital rate calculation.

Mentions: Over time, chronic exposure to Alliaria was predicted to compound this carbon deficit and affect plant growth and vital rates. Results from our long-term field study of Alliaria removal are consistent with this prediction. Individual aboveground plant size (Fig. 2) and multiple carbon-intensive and size-dependent vital rates (Figs 3–5) are positively affected in Alliaria removal relative to Alliaria-ambient plots.Figure 3.


Mutualism-disrupting allelopathic invader drives carbon stress and vital rate decline in a forest perennial herb.

Brouwer NL, Hale AN, Kalisz S - AoB Plants (2015)

Effect of Alliaria on Maianthemum retrogression from flowering to non-flowering. (A) Annual mean difference in retrogression frequency (ES) in Alliaria-ambient and removal plot. Effect size is expressed as an OR and plotted on the log scale. (B) Mean retrogression frequencies in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant effect of Alliaria removal (P < 0.05). Retrogression is calculated conditional on a plant being observed above-ground and not dormant. Sample sizes for 2006 and 2007 were insufficient for vital rate calculation.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4374104&req=5

PLV014F4: Effect of Alliaria on Maianthemum retrogression from flowering to non-flowering. (A) Annual mean difference in retrogression frequency (ES) in Alliaria-ambient and removal plot. Effect size is expressed as an OR and plotted on the log scale. (B) Mean retrogression frequencies in both treatments and ANOVA trend contrasts. Error bars represent ±95 % CIs. Asterisk indicates a significant effect of Alliaria removal (P < 0.05). Retrogression is calculated conditional on a plant being observed above-ground and not dormant. Sample sizes for 2006 and 2007 were insufficient for vital rate calculation.
Mentions: Over time, chronic exposure to Alliaria was predicted to compound this carbon deficit and affect plant growth and vital rates. Results from our long-term field study of Alliaria removal are consistent with this prediction. Individual aboveground plant size (Fig. 2) and multiple carbon-intensive and size-dependent vital rates (Figs 3–5) are positively affected in Alliaria removal relative to Alliaria-ambient plots.Figure 3.

Bottom Line: Over a single growing season, the loss of RFS could reduce a plant's photosynthetic physiology and carbon storage.Alliaria-treated plants exhibit significant overall reductions in total non-structural carbohydrates and have 17 % less storage carbohydrates relative to controls.Together, our results are consistent with the hypothesis that disruption of a ubiquitous mutualism following species invasion creates symptoms of carbon stress for species dependent on RFS.

View Article: PubMed Central - PubMed

Affiliation: Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA brouwern@gmail.com.

No MeSH data available.


Related in: MedlinePlus