Light intensity affects leaf morphology in a wild population of Adenostyles alliariae (Asteraceae)

Authors: Francis, Bailey Country: Italy DOI: 10.3897/italianbotanist.8.39393 Published: Jan. 1, 2019 Source: Italian Botanist OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: fluctuating asymmetry · Topics: Morphological variations and asymmetry, Leaf Properties and Growth Measurement, Seed and Plant Biochemistry

Low light conditions can impose environmental stress on plants, and plants often respond adaptively by increasing their leaf area. Light stress on plants can also result in developmental instability, which can manifest as increased fluctuating asymmetry in leaves or other organs. The relationship between light conditions and fluctuating asymmetry has been documented in experimental populations, but has been less frequently observed in the wild. Here, we studied how leaf surface area and fluctuating asymmetry correlate with light intensity in a wild population of Adenostyles alliariae (Asteraceae). We found strong evidence that leaf surface area increases and weak evidence that fluctuating asymmetry increases as light intensity decreases. Our results help to elucidate the relationship between light stress and developmental instability under naturally occurring conditions.

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