INVESTIGADORES
IRIEL Analia
artículos
Título:
Is the flower fluorescence relevant in biocommunication?
Autor/es:
ANALIA IRIEL ; M. GABRIELA LAGORIO
Revista:
NATURWISSENSCHAFTEN
Editorial:
SPRINGER
Referencias:
Año: 2010 vol. 97 p. 915 - 924
ISSN:
0028-1042
Resumen:
Flower fluorescence has been previously proposed
as a potential visual signal to attract pollinators. In
this work, this point was addressed by quantitatively
measuring the fluorescence quantum yield (Φf) for flowers
of Bellis perennis (white, yellow, pink, and purple),
Ornithogalum thyrsoides (petals and ovaries), Limonium
sinuatum (white and yellow), Lampranthus productus
(yellow), Petunia nyctaginiflora (white), Bougainvillea
spectabilis (white and yellow), Antirrhinum majus (white
and yellow), Eustoma grandiflorum (white and blue),
Citrus aurantium (petals and stigma), and Portulaca
grandiflora (yellow). The highest values were obtained
for the ovaries of O. thyrsoides (Φf=0.030) and for Citrus
aurantium petals (Φf=0.014) and stigma (Φf=0.013).
Emitted photons as fluorescence were compared with
reflected photons. It was concluded that the fluorescence
emission is negligible compared to the reflected light, even
for the most fluorescent samples, and it may not be
considered as an optical signal in biocommunication. The
work was complemented with the calculation of quantum
catches for each studied flower species to describe the
visual sensitization of eye photoreceptors.