Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1139/cjb-2013-0203 http://www.locus.ufv.br/handle/123456789/23118 |
Resumo: | Colleters are secretory structures located in reproductive and (or) vegetative organs of many eudicots. In Gentianaceae Juss., the presence of foliar colleters has been neglected, and anatomical and histochemical studies are scarce. The objectives of this study were to investigate the anatomy, ontogeny, and chemical nature of the secretion found in Macrocarpaea obtusifolia (Griseb.) Gilg colleters to establish a relationship between their structure and function and check whether these structures are similar to those described for other genera of the Gentianaceae and other families of the Gentianales. Samples of leaves at different developmental stages were collected and processed for anatomical and histochemical analysis using light microscopy and scanning electron microscopy. Colleters in M. obtusifolia have a protodermal origin, are of standard type, and are not vascularized. Young colleters are translucent and produce an abundant amount of sticky secretion. Later, they turn yellowish with a blackened region at the apex of the head, and the secretion, composed of polysaccharides and proteins, becomes less abundant and brownish. During senescence, the process begins with complete degradation and cell collapse of the secretory portion. The colleters of the standard type in M. obtusifolia have been observed for the first time in the Gentianaceae and represent additional evidence that reinforces how common this type of colleter is in the Gentianales. Such results provide new information on the anatomy, ontogeny, histochemistry, and colleter types of Gentianaceae. |
id |
UFV_df77f2888b0d38aa30c90ba7161ecccd |
---|---|
oai_identifier_str |
oai:locus.ufv.br:123456789/23118 |
network_acronym_str |
UFV |
network_name_str |
LOCUS Repositório Institucional da UFV |
repository_id_str |
2145 |
spelling |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretionMicromorphologyMucilageProteinsSecretory structuresMicromorphologieMucilageProtéinesStructures sécrétricesColleters are secretory structures located in reproductive and (or) vegetative organs of many eudicots. In Gentianaceae Juss., the presence of foliar colleters has been neglected, and anatomical and histochemical studies are scarce. The objectives of this study were to investigate the anatomy, ontogeny, and chemical nature of the secretion found in Macrocarpaea obtusifolia (Griseb.) Gilg colleters to establish a relationship between their structure and function and check whether these structures are similar to those described for other genera of the Gentianaceae and other families of the Gentianales. Samples of leaves at different developmental stages were collected and processed for anatomical and histochemical analysis using light microscopy and scanning electron microscopy. Colleters in M. obtusifolia have a protodermal origin, are of standard type, and are not vascularized. Young colleters are translucent and produce an abundant amount of sticky secretion. Later, they turn yellowish with a blackened region at the apex of the head, and the secretion, composed of polysaccharides and proteins, becomes less abundant and brownish. During senescence, the process begins with complete degradation and cell collapse of the secretory portion. The colleters of the standard type in M. obtusifolia have been observed for the first time in the Gentianaceae and represent additional evidence that reinforces how common this type of colleter is in the Gentianales. Such results provide new information on the anatomy, ontogeny, histochemistry, and colleter types of Gentianaceae.Les collerettes constituent des structures sécrétrices localisées dans les organes reproducteurs ou végétatifs de plusieurs eudicotylées. Chez les Gentianaceae, on a négligé la présence de collerettes foliaires; en effet, rares sont les études anatomiques et histochimiques. L’objectif des auteurs était d’examiner l’anatomie, l’ontogénie, et la nature chimique de la sécrétion se retrouvant dans les collerettes du Macrocarpaea obtusifolia (Griseb.) Gilg, afin d'établir la relation entre leur structure et leur fonction et de vérifier si ces structures sont semblables a` celles décrites chez d’autres genres de Gentianaceae et d’autres familles des Gentianales. Ils ont récolté des échantillons de feuilles a` divers stades de développement et effectué des analyses anatomiques et histochimiques a` l'aide de la microscopie photonique et a` électronique par balayage. Chez le M. obtusifolia, les collerettes ont une origine protodermique, sont de type standard et non vascularisées. Les jeunes collerettes translucides produisent une bonne quantité de sécrétion collante. Plus tard, elles deviennent jaunes avec une région a` col noir a` l’apex de la tête et la sécrétion, composée de polysaccharides et de protéines, devient moins abondante et brunit. Pendant la sénescence, le processus débute avec une dégradation complète avec un affaissement des cellules de la portion sécrétrice. On a observé pour la première fois les collerettes de type standard chez le M. obtusifolia, ce qui représente une preuve additionnelle supportant jusqu’a` quel point ce type de collerette est commun chez les Gentianales. De tels résultats fournissent une nouvelle information sur l’anatomie, l’ontogénie, l’histochimie, et les types de collerettes des Gentianaceae.Botany2019-01-21T21:58:14Z2019-01-21T21:58:14Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1916-2804https://doi.org/10.1139/cjb-2013-0203http://www.locus.ufv.br/handle/123456789/23118engVolume 92, Number 1, Pages 59- 67, 2014NRC Research Pressinfo:eu-repo/semantics/openAccessDalvi, Valdnéa CasagrandeCardinelli, Lucas SiqueiraMeira, Renata Maria Strozi AlvesAzevedo, Aristéa Alvesreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T08:15:14Zoai:locus.ufv.br:123456789/23118Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T08:15:14LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
title |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
spellingShingle |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion Dalvi, Valdnéa Casagrande Micromorphology Mucilage Proteins Secretory structures Micromorphologie Mucilage Protéines Structures sécrétrices |
title_short |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
title_full |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
title_fullStr |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
title_full_unstemmed |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
title_sort |
Foliar colleters in Macrocarpaea obtusifolia (Gentianaceae): anatomy, ontogeny, and secretion |
author |
Dalvi, Valdnéa Casagrande |
author_facet |
Dalvi, Valdnéa Casagrande Cardinelli, Lucas Siqueira Meira, Renata Maria Strozi Alves Azevedo, Aristéa Alves |
author_role |
author |
author2 |
Cardinelli, Lucas Siqueira Meira, Renata Maria Strozi Alves Azevedo, Aristéa Alves |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Dalvi, Valdnéa Casagrande Cardinelli, Lucas Siqueira Meira, Renata Maria Strozi Alves Azevedo, Aristéa Alves |
dc.subject.por.fl_str_mv |
Micromorphology Mucilage Proteins Secretory structures Micromorphologie Mucilage Protéines Structures sécrétrices |
topic |
Micromorphology Mucilage Proteins Secretory structures Micromorphologie Mucilage Protéines Structures sécrétrices |
description |
Colleters are secretory structures located in reproductive and (or) vegetative organs of many eudicots. In Gentianaceae Juss., the presence of foliar colleters has been neglected, and anatomical and histochemical studies are scarce. The objectives of this study were to investigate the anatomy, ontogeny, and chemical nature of the secretion found in Macrocarpaea obtusifolia (Griseb.) Gilg colleters to establish a relationship between their structure and function and check whether these structures are similar to those described for other genera of the Gentianaceae and other families of the Gentianales. Samples of leaves at different developmental stages were collected and processed for anatomical and histochemical analysis using light microscopy and scanning electron microscopy. Colleters in M. obtusifolia have a protodermal origin, are of standard type, and are not vascularized. Young colleters are translucent and produce an abundant amount of sticky secretion. Later, they turn yellowish with a blackened region at the apex of the head, and the secretion, composed of polysaccharides and proteins, becomes less abundant and brownish. During senescence, the process begins with complete degradation and cell collapse of the secretory portion. The colleters of the standard type in M. obtusifolia have been observed for the first time in the Gentianaceae and represent additional evidence that reinforces how common this type of colleter is in the Gentianales. Such results provide new information on the anatomy, ontogeny, histochemistry, and colleter types of Gentianaceae. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2019-01-21T21:58:14Z 2019-01-21T21:58:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
1916-2804 https://doi.org/10.1139/cjb-2013-0203 http://www.locus.ufv.br/handle/123456789/23118 |
identifier_str_mv |
1916-2804 |
url |
https://doi.org/10.1139/cjb-2013-0203 http://www.locus.ufv.br/handle/123456789/23118 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Volume 92, Number 1, Pages 59- 67, 2014 |
dc.rights.driver.fl_str_mv |
NRC Research Press info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
NRC Research Press |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
pdf application/pdf |
dc.publisher.none.fl_str_mv |
Botany |
publisher.none.fl_str_mv |
Botany |
dc.source.none.fl_str_mv |
reponame:LOCUS Repositório Institucional da UFV instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
LOCUS Repositório Institucional da UFV |
collection |
LOCUS Repositório Institucional da UFV |
repository.name.fl_str_mv |
LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
fabiojreis@ufv.br |
_version_ |
1817559999884296192 |