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Non-structural Carbohydrate Accumulation and Use in an Understorey Rain-forest Shrub and Relevance for the Impact of Leaf Herbivory by R. J. MARQUIS; E. A. NEWELL; A. C. VILLEGAS is a Environmental Science article available to read on EtoBox.

What is Non-structural Carbohydrate Accumulation and Use in an Understorey Rain-forest Shrub and Relevance for the Impact of Leaf Herbivory about?

1. __Piper arieianum,__ an evergreen, understorey shrub of lowland moist forests of Central and South America, exhibits marked seasonal variation in reproductive activity even though climatic variation is low at the study site. Despite a lack of climatic seasonality, previous experimental leaf removal suggested that carbohydrate accumulation is seasonal, occurring prior to flowering. 2. We first tested the hypothesis that carbohydrates necessary for reproduction are accumulated prior to flowering, rather than during or after. By measuring non‐structural carbohydrate production in the form of glucose and starch we found that the concentration of these reserves is greatest 1–3months before flowering, decreasing by 50% during peak fruit maturation. 3. The hypothesis that reproduction was the cause of this decrease in carbohydrate reserves was then tested by comparing reserves in plants that were prevented from flowering with those that flowered and produced fruit naturally. As predicted, reserves declined more in flowering than in non‐flowering plants. A smaller decline in reserves of non‐flowering plants was accompanied by greater stem and leaf production, suggesting that stored carb

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Author

R. J. MARQUIS; E. A. NEWELL; A. C. VILLEGAS

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; JSTOR (ISSN 0269-8463)

Published

1997

Language

EN

Field

Environmental Science (Physical Sciences)