Nov 8, 2015

Climate and developmental plasticity: interannual variability in grapevine leaf morphology

BioRxiv : the Preprint Server for Biology
Daniel H ChitwoodJason P Londo


The shape of leaves are dynamic, changing over evolutionary time between species, within a single plant producing different shaped leaves at successive nodes, during the development of a single leaf as it allometrically expands, and in response to the environment. Notably, strong correlations between the dissection and size of leaves with temperature and precipitation exist in both the paleorecord and extant populations. Yet, a morphometric model integrating evolutionary, developmental, and environmental effects on leaf shape is lacking. Here, we continue a morphometric analysis of >5,500 leaves representing 270 grapevines of multiple Vitis species between two growing seasons. Leaves are paired one-to-one, vine-to-vine accounting for developmental context, between growing seasons. Linear Discriminant Analysis reveals shape features that specifically define growing season, regardless of species or developmental context. The shape feature, a more pronounced distal sinus, is associated with the colder, drier growing season, consistent with patterns observed in the paleorecord. We discuss the implications of such plasticity in a long-lived woody perennial, such as grapevine, with respect to the evolution and functionality of plant ...Continue Reading

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Mentioned in this Paper

Vitis species
Vine, Bach flower essence
Coat protein, grapevine fanleaf virus
Science of Morphology
Sinus - General Anatomical Term
Anatomical Space Structure

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