Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development

Detalhes bibliográficos
Autor(a) principal: Miranda,Rafaela Marques de
Data de Publicação: 2017
Outros Autores: Nery,Lays Araújo, Ventrella,Marília Contin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Acta Botanica Brasilica
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468
Resumo: ABSTRACT This study aimed to anatomically characterize the extrafloral nectaries (EFNs) of annatto (Bixa orellana) and determine the composition of its nectar in order to better understand their structure and function during organ development. Standard light and scanning electron microscopy techniques were used for anatomical analysis, and test-strips and a refractometer for determining nectar composition. Both receptacle and stem EFNs were found to possess similar anatomy and nectar composition, and to secrete from early to advanced developmental stages of the organs to which they are associated. EFNs consisting of uniseriate epidermis, nectariferous parenchyma and subnectariferous parenchyma were found located where vascular tissue is immersed. Some layers of nectariferous parenchyma exhibited sclerification and cells with phenolic compounds or calcium oxalate druses were present. Nectar exuded by stomata was acidic, diluted and found to contain sugar. The anatomical and histochemical features of annatto EFNs ensure their integrity and nectar secretion function during the development of buds, flowers and fruits.
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spelling Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ developmentantshistochemistrynectar releasesecretory structureurucumABSTRACT This study aimed to anatomically characterize the extrafloral nectaries (EFNs) of annatto (Bixa orellana) and determine the composition of its nectar in order to better understand their structure and function during organ development. Standard light and scanning electron microscopy techniques were used for anatomical analysis, and test-strips and a refractometer for determining nectar composition. Both receptacle and stem EFNs were found to possess similar anatomy and nectar composition, and to secrete from early to advanced developmental stages of the organs to which they are associated. EFNs consisting of uniseriate epidermis, nectariferous parenchyma and subnectariferous parenchyma were found located where vascular tissue is immersed. Some layers of nectariferous parenchyma exhibited sclerification and cells with phenolic compounds or calcium oxalate druses were present. Nectar exuded by stomata was acidic, diluted and found to contain sugar. The anatomical and histochemical features of annatto EFNs ensure their integrity and nectar secretion function during the development of buds, flowers and fruits.Sociedade Botânica do Brasil2017-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468Acta Botanica Brasilica v.31 n.3 2017reponame:Acta Botanica Brasilicainstname:Sociedade Botânica do Brasil (SBB)instacron:SBB10.1590/0102-33062017abb0191info:eu-repo/semantics/openAccessMiranda,Rafaela Marques deNery,Lays AraújoVentrella,Marília Contineng2017-07-13T00:00:00Zoai:scielo:S0102-33062017000300468Revistahttps://www.scielo.br/j/abb/ONGhttps://old.scielo.br/oai/scielo-oai.phpacta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com1677-941X0102-3306opendoar:2017-07-13T00:00Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)false
dc.title.none.fl_str_mv Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
title Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
spellingShingle Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
Miranda,Rafaela Marques de
ants
histochemistry
nectar release
secretory structure
urucum
title_short Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
title_full Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
title_fullStr Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
title_full_unstemmed Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
title_sort Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
author Miranda,Rafaela Marques de
author_facet Miranda,Rafaela Marques de
Nery,Lays Araújo
Ventrella,Marília Contin
author_role author
author2 Nery,Lays Araújo
Ventrella,Marília Contin
author2_role author
author
dc.contributor.author.fl_str_mv Miranda,Rafaela Marques de
Nery,Lays Araújo
Ventrella,Marília Contin
dc.subject.por.fl_str_mv ants
histochemistry
nectar release
secretory structure
urucum
topic ants
histochemistry
nectar release
secretory structure
urucum
description ABSTRACT This study aimed to anatomically characterize the extrafloral nectaries (EFNs) of annatto (Bixa orellana) and determine the composition of its nectar in order to better understand their structure and function during organ development. Standard light and scanning electron microscopy techniques were used for anatomical analysis, and test-strips and a refractometer for determining nectar composition. Both receptacle and stem EFNs were found to possess similar anatomy and nectar composition, and to secrete from early to advanced developmental stages of the organs to which they are associated. EFNs consisting of uniseriate epidermis, nectariferous parenchyma and subnectariferous parenchyma were found located where vascular tissue is immersed. Some layers of nectariferous parenchyma exhibited sclerification and cells with phenolic compounds or calcium oxalate druses were present. Nectar exuded by stomata was acidic, diluted and found to contain sugar. The anatomical and histochemical features of annatto EFNs ensure their integrity and nectar secretion function during the development of buds, flowers and fruits.
publishDate 2017
dc.date.none.fl_str_mv 2017-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0102-33062017abb0191
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Botânica do Brasil
publisher.none.fl_str_mv Sociedade Botânica do Brasil
dc.source.none.fl_str_mv Acta Botanica Brasilica v.31 n.3 2017
reponame:Acta Botanica Brasilica
instname:Sociedade Botânica do Brasil (SBB)
instacron:SBB
instname_str Sociedade Botânica do Brasil (SBB)
instacron_str SBB
institution SBB
reponame_str Acta Botanica Brasilica
collection Acta Botanica Brasilica
repository.name.fl_str_mv Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)
repository.mail.fl_str_mv acta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com
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