Mostrar el registro sencillo del ítem
dc.contributor.author
González, Ana María
dc.contributor.author
Sato, Hector Arnaldo
dc.contributor.author
Marazzi, Brigitte
dc.date.available
2020-06-25T15:17:35Z
dc.date.issued
2019-03
dc.identifier.citation
González, Ana María; Sato, Hector Arnaldo; Marazzi, Brigitte; Embryology in Helosis cayennensis (Balanophoraceae): Structure of Female Flowers, Fruit, Endosperm and Embryo; MDPI; Plants; 8; 3; 3-2019; 1-19
dc.identifier.issn
2223-7747
dc.identifier.uri
http://hdl.handle.net/11336/108224
dc.description.abstract
Helosis cayennensis (Balanophoraceae s.str.) is a holoparasite characterised by aberrant vegetative bodies and tiny, reduced unisexual flowers. Here, we analysed the development of female flowers to elucidate their morpho-anatomy and the historical controversy on embryo sac formation. We also studied the developmental origin of inflorescences and the ontogeny of fruits, embryo and endosperm and discussed in a phylogenetic framework. Inflorescences were analysed by optical, fluorescence and scanning electron microscopy. Inflorescences of H. cayennensis arise endogenously. Female flowers lack perianth organs, thus only consist of the ovary, two styles and stigmata. Ovules are undifferentiated; two megaspore mother cells develop inside a nucellar complex. The female gametophyte, named Helosis-type, is a bisporic four-celled embryo sac, provided with a typical egg apparatus and a uni-nucleated central cell. Fertilization was not observed, yet a few-celled embryo and cellular endosperm developed. In sum, results confirm that, among Santalales holoparasites, Helosis is intermediate in the reduction series of its floral organs. Although perianth absence best supports the Balanophoraceae s.str. clade, our literature survey on female flower developmental data across Balanophoraceae s.l. highlights the many gaps that need to be filled to really understand these features in the light of new phylogenetic relationships
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
MDPI
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GAMETOPHYTE
dc.subject
FERTILIZATION
dc.subject
BALANOPHORACEAE
dc.subject
HOLOPARASITE
dc.subject.classification
Ciencias de las Plantas, Botánica
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Embryology in Helosis cayennensis (Balanophoraceae): Structure of Female Flowers, Fruit, Endosperm and Embryo
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-06-23T14:51:16Z
dc.journal.volume
8
dc.journal.number
3
dc.journal.pagination
1-19
dc.journal.pais
Suiza
dc.journal.ciudad
Basel
dc.description.fil
Fil: González, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Botánica del Nordeste. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Instituto de Botánica del Nordeste; Argentina
dc.description.fil
Fil: Sato, Hector Arnaldo. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Marazzi, Brigitte. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Plants
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2223-7747/8/3/74
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/plants8030074
Archivos asociados