10.5061/DRYAD.09DG6
Wanderley, Artur M.
Federal University of Pernambuco
Galetto, Leonardo
National University of Córdoba
Machado, Isabel C. S.
Federal University of Pernambuco
Data from: Functional decoupling between flowers and leaves in the
Ameroglossum pernambucense complex can facilitate local adaptation across
a pollinator and climatic heterogeneous landscape
Dryad
dataset
2015
Pollinator specialization
inselbergs
Ameroglossum pernambucense complex
rock outcrops
Scrophulariaceae
geographic variation
functional and developmental modularity
Berg hypothesis
2015-12-11T17:00:45Z
2015-12-11T17:00:45Z
en
https://doi.org/10.1111/jeb.12802
16977 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Decoupling between floral and leaf traits is expected in plants with
specialized pollination systems to assure a precise flower–pollinator fit,
irrespective of leaf variation associated with environmental heterogeneity
(functional modularity). Nonetheless, developmental interactions among
floral traits also decouple flowers from leaves regardless of selection
pressures (developmental modularity). We tested functional modularity in
the hummingbird-pollinated flowers of the Ameroglossum pernambucense
complex while controlling for developmental modularity. Using two
functional traits responsible for flower–pollinator fit [floral tube
length (TL) and anther–nectary distance (AN)], one floral trait not linked
to pollination [sepal length (SL), control for developmental modularity]
and one leaf trait [leaf length (LL)], we found evidence of flower
functional modularity. Covariation between TL and AN was ca. two-fold
higher than the covariation of either of these traits with sepal and leaf
lengths, and variations in TL and AN, important for a precise
flower–pollinator fit, were smaller than SL and LL variations.
Furthermore, we show that previously reported among-population variation
of flowers associated with local pollinator phenotypes was independent
from SL and LL variations. These results suggest that TL and AN are
functionally linked to fit pollinators and sufficiently decoupled from
developmentally related floral traits (SL) and vegetative traits (LL).
These results support previous evidences of population differentiation due
to local adaptation in the A. pernambucense complex and shed light on the
role of flower–leaf decoupling for local adaptation in species distributed
across biotic and abiotic heterogeneous landscapes.
Wanderley et al_data
Borborema Plateau
Northeast Brazil