Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition

The spikelet of Urochloa paucispicata has a typical Paniceae structure and it constitutes the unit of dispersal; the base of its lower glume is united to an elongated internode between the lower and the upper glumes, and at maturity, it becomes soft and turgid, developing the elaiosome. Chemical ide...

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Detalles Bibliográficos
Autores principales:	Morrone, O., Vega, A.S., Maier, M.
Formato:	JOUR
Materias:	Ants Elaiosome Lipids Seed dispersal Urochloa Acromyrmex landolti Ectatomma Formicidae Hymenoptera Paniceae Panicoideae Pheidole Poaceae Urochloa paucispicata
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_03672530_v195_n4_p303_Morrone
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_03672530_v195_n4_p303_Morrone
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spelling	todo:paper_03672530_v195_n4_p303_Morrone2023-10-03T15:28:10Z Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition Morrone, O. Vega, A.S. Maier, M. Ants Elaiosome Lipids Seed dispersal Urochloa Acromyrmex landolti Acromyrmex landolti Ectatomma Ectatomma Formicidae Hymenoptera Paniceae Panicoideae Pheidole Pheidole Poaceae Urochloa Urochloa paucispicata The spikelet of Urochloa paucispicata has a typical Paniceae structure and it constitutes the unit of dispersal; the base of its lower glume is united to an elongated internode between the lower and the upper glumes, and at maturity, it becomes soft and turgid, developing the elaiosome. Chemical identification of TLC fractions in the elaiosome of Urochloa paucispicata showed that it contains triglycerides, free fatty acids and diglycerides. Gas chromatography of the fatty acid methyl esters, of each fraction, showed the presence of palmitic, oleic, linoleic and stearic acids. Palmitic, oleic and linoleic acids are significant components of the lipid fractions. By field observations we identified three different species of ants (Hymenoptera: Formicidae) which removed the spikelets of Urochloa paucispicata and carried them to their nests: Acromyrmex landolti fracticornis FOREL, Pheidole spp. and Ectatomma spp. Fil:Vega, A.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_v195_n4_p303_Morrone
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Ants Elaiosome Lipids Seed dispersal Urochloa Acromyrmex landolti Acromyrmex landolti Ectatomma Ectatomma Formicidae Hymenoptera Paniceae Panicoideae Pheidole Pheidole Poaceae Urochloa Urochloa paucispicata
spellingShingle	Ants Elaiosome Lipids Seed dispersal Urochloa Acromyrmex landolti Acromyrmex landolti Ectatomma Ectatomma Formicidae Hymenoptera Paniceae Panicoideae Pheidole Pheidole Poaceae Urochloa Urochloa paucispicata Morrone, O. Vega, A.S. Maier, M. Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
topic_facet	Ants Elaiosome Lipids Seed dispersal Urochloa Acromyrmex landolti Acromyrmex landolti Ectatomma Ectatomma Formicidae Hymenoptera Paniceae Panicoideae Pheidole Pheidole Poaceae Urochloa Urochloa paucispicata
description	The spikelet of Urochloa paucispicata has a typical Paniceae structure and it constitutes the unit of dispersal; the base of its lower glume is united to an elongated internode between the lower and the upper glumes, and at maturity, it becomes soft and turgid, developing the elaiosome. Chemical identification of TLC fractions in the elaiosome of Urochloa paucispicata showed that it contains triglycerides, free fatty acids and diglycerides. Gas chromatography of the fatty acid methyl esters, of each fraction, showed the presence of palmitic, oleic, linoleic and stearic acids. Palmitic, oleic and linoleic acids are significant components of the lipid fractions. By field observations we identified three different species of ants (Hymenoptera: Formicidae) which removed the spikelets of Urochloa paucispicata and carried them to their nests: Acromyrmex landolti fracticornis FOREL, Pheidole spp. and Ectatomma spp.
format	JOUR
author	Morrone, O. Vega, A.S. Maier, M.
author_facet	Morrone, O. Vega, A.S. Maier, M.
author_sort	Morrone, O.
title	Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
title_short	Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
title_full	Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
title_fullStr	Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
title_full_unstemmed	Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition
title_sort	elaiosomes in urochloa paucispicata (poaceae: panicoideae: paniceae): anatomy and chemical composition
url	http://hdl.handle.net/20.500.12110/paper_03672530_v195_n4_p303_Morrone
work_keys_str_mv	AT morroneo elaiosomesinurochloapaucispicatapoaceaepanicoideaepaniceaeanatomyandchemicalcomposition AT vegaas elaiosomesinurochloapaucispicatapoaceaepanicoideaepaniceaeanatomyandchemicalcomposition AT maierm elaiosomesinurochloapaucispicatapoaceaepanicoideaepaniceaeanatomyandchemicalcomposition
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Elaiosomes in Urochloa paucispicata (Poaceae: Panicoideae: Paniceae): Anatomy and chemical composition

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