Artículos de revistas
Morphology Of The Unusual Polyad In Amazonian Parkia Legume Trees
Registro en:
Trees - Structure And Function. Springer Verlag, v. 28, n. 5, p. 1507 - 1514, 2014.
9311890
10.1007/s00468-014-1055-5
2-s2.0-84920252358
Autor
Capucho L.C.
Teixeira S.P.
Institución
Resumen
Abstract: This study details the unusual morphology of polyads of three species of Parkia (P. multijuga Benth., P. ulei (Harms) Kuhlm., and P. pendula (Willd.) Benth. ex Walp.) and suggests functions for polyad adaptive traits that are linked to the reproductive success of the species. Polyads within the anthers of the three Parkia species were analysed by surface (scanning electron microscopy) and anatomical (light microscopy) studies. Ultrastructure and development studies were carried out for P. pendula polyads. Polyads are globose and cavitated, i.e., exhibit an internal cavity that varies in size, being more conspicuous in P. ulei and P. pendula. Other differences among species are related to the polyad size, exine ornamentation and the type of substances stored in the pollen grain. The polyad internal cavity is filled with an exudate that may be related to the pollen germination through the internal pores and/or translocation of substances from the anther loculus to the inside or vice versa. This inference is supported by the following observations: the spaces between the pollen grains in a polyad are also filled with the exudate, and the exudate inside the polyad is similar to the anther locular fluid. The morphology and substances stored within the pollen grains of Parkia polyads seem to be more related to polyad functionality and physiology than to the selective pressures exerted by different pollinators on the group.Key message: An unusual polyadoccursin threeParkiaspecies, named cavitate polyad. It has an internal central space full of lipoproteinsubstances, contacting all pollen grains, probably aiding pollen germination. 28 5 1507 1514 Arce, L.R., Banks, H., A preliminary survey of pollen and other morphological characters in neotropical Acacia subgenus Aculeiferum (Leguminosae: Mimosoideae) (2001) Bot J Linn Soc, 135, pp. 263-270 Baker, H.G., Baker, I., Starch in angiosperm pollen grains and its evolutionary significance (1979) Am J Bot, 66, pp. 591-600 Baker, H.G., Harris, B.J., The pollination of Parkia by bats and its attendant evolutionary problems (1957) Evolution, 11, pp. 449-460 Basso-Alves, J.P., Agostini, K., Teixeira, S.P., Pollen and stigma morphology of some Phaseoleae species (Leguminosae) with different pollinators (2011) Pl Biol, 13, pp. 602-610. , COI: 1:STN:280:DC%2BC3MngtFyltA%3D%3D Feder, N., O’Brien, T.P., Plant microtechnique: some principles and new methods (1968) Am J Bot, 55, pp. 123-142 Feuer, S.M., Niezgoda, C.J., Nevling, L.I., Ultrastructure of Parkia polyads (Mimosoideae: Leguminosae) (1985) Am J Bot, 72, pp. 1871-1890 Fitzgerald, M.A., Calder, D.M., Knox, R.B., Character states of development and initiation of cohesion between compound pollen grains of Acacia paradoxa (1993) Ann Bot, 71, pp. 51-59 Gerrits, P.O., (1991) The application of glycol methacrylate in histotechnology some fundamental principles, , Department of Anatomy and Embryology, State University Groningen, The Netherlands: Harder, L.D., Johnson, S.D., Function and evolution of aggregated pollen in angiosperms (2008) Int J Pl Sci, 169, pp. 59-78 Hopkins, H.C.F., Floral biology and pollination ecology of the Neotropical species of Parkia (1984) J Ecol, 72, pp. 1-23 Hopkins, H.C.F., Monograph 43—Parkia (Leguminosae: Mimosoideae) (1986) In: Flora neotropica, , The New York Botanical Garden, New York: Johansen, D.A., (1940) Plant microtechnique, , McGraw-Hill Book Company Inc., New York: Karnovsky, M.J., A formaldehyde-glutaraldehyde fixative of high osmolarity for use in eletron microscopy (1965) J Cell Biol, 27, pp. 137A-138A Kenrick, J., Knox, R.B., Pollen development and cytochemistry in some Australian species of Acacia (1979) Aust J Bot, 27, pp. 413-427 Lewis, G., Schrire, B., Mackinder, B., Lock, M., (2005) Legumes of the world, , The Royal Botanical Gardens, Kew: Luckow, M., Hopkins, H.C.F., A cladistic analysis of Parkia (Leguminosae: Mimosoideae) (1995) Am J Bot, 82, pp. 1300-1320 Niezgoda, C.J., Feuer, S.M., Nevling, L.I., Pollen ultrastructure of the tribe Ingeae (Mimosoideae: Leguminosae) (1983) Am J Bot, 70, pp. 650-667 O’Brien, T.P., Mccully, M.E., (1981) The study of plants structure. Principles and selected methods, , Thermarcarphy Ltd., Melbourne: O’Brien, T.P., Feder, N., Mccully, M.E., Polychromatic staining of plant cell walls by Toluidine Blue O (1964) Protoplasma, 59, pp. 368-373 Pearse, A., Histochemistry theoretical and applied (1980) vol II, , Longman Group Limited, London: Prenner, G., Teppner, H., Anther development, pollen presentation and pollen adhesive of parenchymatous origin in Calliandra angustifolia (Leguminosae–Mimosoideae–Ingeae) (2005) Phyton, 45, pp. 267-286 Reynolds, E.W., Use of lead citrate at high pH as an electron opaque stain in electron microscopy (1963) J Cell Biol, 17, pp. 208-212. , PID: 13986422, COI: 1:CAS:528:DyaF3sXktVClu70%3D Roulston, T.H., Cane, J.H., Pollen nutritional content and digestibility for animals (2000) Pl Syst Evol, 222, pp. 187-209. , COI: 1:CAS:528:DC%2BD3cXls1Ohu7Y%3D Santos, F.A.R., Romão, C.O., Pollen morphology of some species of Calliandra Benth. (Leguminosae–Mimosoideae) from Bahia, Brazil (2008) Grana, 47, pp. 101-116 Seijo, J.G., Neffa, V.G.S., The cytological origin of the polyads and their significance in the reproductive biology of Mimosa bimucronata (2004) Bot J Linn Soc, 144, pp. 343-349 Stroo, A., Pollen morphological evolution in bat pollinated plants (2000) Pl Syst Evol, 222, pp. 225-242 Teppner, H., Polyad development and karyology in Inga and Calliandra (Mimosaceae-Ingeae): a reply to a recent paper in Flora (2007) Phyton Ann R Bot, 47, pp. 1-46 The Legume Phylogeny Working Group, Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades (2013) Taxon, 62, pp. 217-248 Watson, M.L., Staining of tissue sections for electron microscopy with heavy metals (1958) J Biophys Biochem Cytol, 4, pp. 475-478. , PID: 13563554, COI: 1:STN:280:DyaG1c7gs1Klsg%3D%3D