Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)

To know thoroughly the structure and function of the corona of Passiflora, the anatomy and ultrastructure of two species were analysed in relation to the emission of odour perceivable by humans: a scented one, P. caerulea L., and a scentless one, P. suberosa L. Both species exhibited secretory tissu...

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Autores principales: Amela García, M.T., Galati, B.G., Hoc, P.S.
Formato: JOUR
Materias:
Osmophores
Passiflora
Scent guides
Submicroscopic structure
TEM
Wax
cell organelle
cultivar
cuticle
dicotyledon
lipid
pollination
ultrastructure
wax
Passiflora caerulea
Passiflora edulis
Passiflora suberosa
Passifloraceae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03672530_v202_n4_p302_AmelaGarcia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03672530_v202_n4_p302_AmelaGarcia
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spelling todo:paper_03672530_v202_n4_p302_AmelaGarcia2023-10-03T15:28:11Z Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae) Amela García, M.T. Galati, B.G. Hoc, P.S. Osmophores Passiflora Scent guides Submicroscopic structure TEM Wax cell organelle cultivar cuticle dicotyledon lipid pollination ultrastructure wax Passiflora Passiflora caerulea Passiflora edulis Passiflora suberosa Passifloraceae To know thoroughly the structure and function of the corona of Passiflora, the anatomy and ultrastructure of two species were analysed in relation to the emission of odour perceivable by humans: a scented one, P. caerulea L., and a scentless one, P. suberosa L. Both species exhibited secretory tissue, whose cells were characterised by dense cytoplasm, numerous mitochondria and vacuoles. Evidence of granulocrine secretion was detected. Nevertheless, there were differences concerning some cytological structures: P. suberosa lacked smooth endoplasmic reticulum (sER) and starch but had large and many lipidic globules, while P. caerulea had few dictyosomes, scarce lipidic content, a greater proportion of sER/rough endoplasmic reticulum (rER) and amyloplasts. The cellular features of P. caerulea correspond with those of fragrance tissues. The secretion appearance and quantity were also different between both species: P. caerulea exhibited sparse drops on the cuticle in contrast to P. suberosa, which secrets a wax-like material. If this is the final product of the secretory process or just a vehicle that contributes to the emission of volatile compounds, as occurs in certain osmophores, needs further confirmation with chemical analysis. Results are discussed in the context of the pollination syndromes of each species and their florivores. © 2007 Elsevier GmbH. All rights reserved. Fil:Amela García, M.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Galati, B.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hoc, P.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03672530_v202_n4_p302_AmelaGarcia
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Osmophores
Passiflora
Scent guides
Submicroscopic structure
TEM
Wax
cell organelle
cultivar
cuticle
dicotyledon
lipid
pollination
ultrastructure
wax
Passiflora
Passiflora caerulea
Passiflora edulis
Passiflora suberosa
Passifloraceae
spellingShingle Osmophores
Passiflora
Scent guides
Submicroscopic structure
TEM
Wax
cell organelle
cultivar
cuticle
dicotyledon
lipid
pollination
ultrastructure
wax
Passiflora
Passiflora caerulea
Passiflora edulis
Passiflora suberosa
Passifloraceae
Amela García, M.T.
Galati, B.G.
Hoc, P.S.
Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
topic_facet Osmophores
Passiflora
Scent guides
Submicroscopic structure
TEM
Wax
cell organelle
cultivar
cuticle
dicotyledon
lipid
pollination
ultrastructure
wax
Passiflora
Passiflora caerulea
Passiflora edulis
Passiflora suberosa
Passifloraceae
description To know thoroughly the structure and function of the corona of Passiflora, the anatomy and ultrastructure of two species were analysed in relation to the emission of odour perceivable by humans: a scented one, P. caerulea L., and a scentless one, P. suberosa L. Both species exhibited secretory tissue, whose cells were characterised by dense cytoplasm, numerous mitochondria and vacuoles. Evidence of granulocrine secretion was detected. Nevertheless, there were differences concerning some cytological structures: P. suberosa lacked smooth endoplasmic reticulum (sER) and starch but had large and many lipidic globules, while P. caerulea had few dictyosomes, scarce lipidic content, a greater proportion of sER/rough endoplasmic reticulum (rER) and amyloplasts. The cellular features of P. caerulea correspond with those of fragrance tissues. The secretion appearance and quantity were also different between both species: P. caerulea exhibited sparse drops on the cuticle in contrast to P. suberosa, which secrets a wax-like material. If this is the final product of the secretory process or just a vehicle that contributes to the emission of volatile compounds, as occurs in certain osmophores, needs further confirmation with chemical analysis. Results are discussed in the context of the pollination syndromes of each species and their florivores. © 2007 Elsevier GmbH. All rights reserved.
format JOUR
author Amela García, M.T.
Galati, B.G.
Hoc, P.S.
author_facet Amela García, M.T.
Galati, B.G.
Hoc, P.S.
author_sort Amela García, M.T.
title Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
title_short Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
title_full Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
title_fullStr Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
title_full_unstemmed Ultrastructure of the corona of scented and scentless flowers of Passiflora spp. (Passifloraceae)
title_sort ultrastructure of the corona of scented and scentless flowers of passiflora spp. (passifloraceae)
url http://hdl.handle.net/20.500.12110/paper_03672530_v202_n4_p302_AmelaGarcia
work_keys_str_mv AT amelagarciamt ultrastructureofthecoronaofscentedandscentlessflowersofpassifloraspppassifloraceae
AT galatibg ultrastructureofthecoronaofscentedandscentlessflowersofpassifloraspppassifloraceae
AT hocps ultrastructureofthecoronaofscentedandscentlessflowersofpassifloraspppassifloraceae
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