Estudios morfo-anatómicos de domacios foliares en rubiáceas argentinas
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Sociedad Argentina de Botánica
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Este trabajo estudia los domacios foliares en Rubiáceas argentinas, los cuales son estructuras
morfogenéticas frecuentes en el envés de las hojas de plantas leñosas, que permiten establecer
relaciones mutualistas con ácaros u hormigas. Se clasifican en tipos relativamente bien conservados
comunes a numerosas familias: mechones de pelos, bolsillos, cavidades y criptas. Alrededor de 290
familias de “dicotiledóneas” tienen domacios, siendo Rubiaceae la mejor representada con todos
los tipos conocidos y transicionales. La clasificación intrafamiliar según datos moleculares, divide a
Rubiaceae en tres subfamilias: Rubioideae, Ixorideae y Cinchonoideae. En Argentina viven 41 géneros
y 132 especies de Rubiáceas, de las cuales 34 son leñosas (27%). Como resultado se encontraron tres
tipos de domacios: mechón de pelos, bolsillos y en cripta en 14 especies de Rubiáceas. Se menciona por
primera vez domacios en una enredadera sufrútice de la familia, en el género Manettia. Los resultados
obtenidos fueron contrastados con estudios moleculares recientes, lo que permitió confirmar la condición
plesiomórfica de los mismos, ya que los diferentes tipos son comunes a las tres subfamilias y a casi todas
las tribus de la familia. Basado en el presente muestreo, las tribus Anthospermeae, Rubieae, Paederieae
y Pavetteae carecen completamente de domacios.
Morpho-anatomic studies of leaf domatia in Argentinian Rubiaceae. This paper deals with the study of leaf domatia in Argentine Rubiaceae, which are common morphogenetic structures on the underside of the leaves of woody plants, which can establish mutual relations with mites or ants. Tufts of hair, pockets, cavities and crypts: many families are classified into types common relatively well preserved. Around 290 families of “dicots” have domatia, Rubiaceae being the best represented with all known and transitional types. Domestic classification by molecular data, Rubiaceae divided into three subfamilies: Rubioideae, Ixorideae and Cinchonoideae. In Argentina inhabit 41 genera and 132 species of Rubiaceae, of which 34 are woody (27%). As result, tree domatia types were found: tuft of hair, pockets and crypt, present in 14 species of Rubiaceace. It is mentioned for the first time a domatia in a vine species of Manettia. The results were compared with recent molecular studies; this confirmed the plesiomorphic condition thereof, since different types are common to the three subfamilies almost all the tribes of the family. Based on this sampling, the following tribes completely lack domatia: Anthospermeae, Rubieae, Paederieae and Pavetteae.
Morpho-anatomic studies of leaf domatia in Argentinian Rubiaceae. This paper deals with the study of leaf domatia in Argentine Rubiaceae, which are common morphogenetic structures on the underside of the leaves of woody plants, which can establish mutual relations with mites or ants. Tufts of hair, pockets, cavities and crypts: many families are classified into types common relatively well preserved. Around 290 families of “dicots” have domatia, Rubiaceae being the best represented with all known and transitional types. Domestic classification by molecular data, Rubiaceae divided into three subfamilies: Rubioideae, Ixorideae and Cinchonoideae. In Argentina inhabit 41 genera and 132 species of Rubiaceae, of which 34 are woody (27%). As result, tree domatia types were found: tuft of hair, pockets and crypt, present in 14 species of Rubiaceace. It is mentioned for the first time a domatia in a vine species of Manettia. The results were compared with recent molecular studies; this confirmed the plesiomorphic condition thereof, since different types are common to the three subfamilies almost all the tribes of the family. Based on this sampling, the following tribes completely lack domatia: Anthospermeae, Rubieae, Paederieae and Pavetteae.
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Romero, María Florencia, Salas, Roberto Manuel y González, Ana María, 2015. Estudios morfo-anatómicos de domacios foliares en rubiáceas argentinas. Boletín de la Sociedad Argentina de Botánica. Buenos Aires: Sociedad Argentina de Botánica, vol. 50, no. 4, p. 493-514. ISSN 0373-580.
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