Anther Dehiscence And Circumscription Of Miconia Sect. Hypoxanthus (melastomataceae)

dc.creatorGoldenberg R.
dc.creatorTeixeira S.P.
dc.creatorMartins A.B.
dc.date2003
dc.date2015-06-30T17:27:36Z
dc.date2015-11-26T15:39:45Z
dc.date2015-06-30T17:27:36Z
dc.date2015-11-26T15:39:45Z
dc.date.accessioned2018-03-28T22:48:14Z
dc.date.available2018-03-28T22:48:14Z
dc.identifier
dc.identifierKew Bulletin. , v. 58, n. 1, p. 195 - 203, 2003.
dc.identifier755974
dc.identifier
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0037726821&partnerID=40&md5=38409323db3f9016d9e571aef56aaafc
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/102076
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/102076
dc.identifier2-s2.0-0037726821
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1264210
dc.descriptionWhile most Melastomataceae have poricidal anthers, Miconia sect. Hypoxanthus (former sect. Chaenanthera) has anthers dehiscing by longitudinal pores, resembling rimose openings. Anther development of three species (Miconia pusilliflora and M. laticrenata from this section and M. cinnamomifolia from sect. Glossocentrum) studied through SEM and light microscopy showed that all have an epidermis with a thick and striate cuticle, except for the dehiscence area. This area is covered by a non-striate epidermis which is associated with the septum that lies between the two thecae. During dehiscence the septum holds the non-striate epidermis, which is torn at the margins of the dehiscence area. Since anther opening of all three species follows the same pattern, in terms of tissues and mechanisms, we conclude that the circumscription of Miconia sect. Hypoxanthus should comprise all species with stamens that dehisce along the septum, resulting in narrow openings that extend from the anther apex to the base (as in M. pusilliflora) or from the apex until half of the anther length (as in M. laticrenata). Miconia section Chaenopleura also has anthers opening by longitudinal slits, but these expose four locules, instead of the two in Hypoxanthus.
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dc.languageen
dc.publisher
dc.relationKew Bulletin
dc.rightsfechado
dc.sourceScopus
dc.titleAnther Dehiscence And Circumscription Of Miconia Sect. Hypoxanthus (melastomataceae)
dc.typeArtículos de revistas


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