Consulta: subjectFacets:"Nectar release"
Registros recuperados: 2
Data/hora: 11/06/2024 05:43:27

How does the nectar of stomata-free nectaries cross the cuticle?
Provedor de dados: 39
Autores: Paiva,Elder Antônio Sousa.
ABSTRACT In many glandular structures, departure from the cell is only one step in the process of exudate release to the plant surface. Here the set of events that lead nectar to the external environment is presented and discussed mainly for stomata-free nectaries. After being synthesized, the nectar or some of its component needs to be released to the environment where it performs its functions. Nectar precursors derived from cell metabolism need to cross several barriers, such as the cell membrane and cell wall, in order to become nectar. Then the nectar must cross the cuticle or pass through stomata in order to be offered to plant mutualists. Release through stomata is a simple mechanism, but the ways by which nectar crosses the cuticle is still...
Palavras-chave: Animal-plant interactions; Cuticular pores; Nectar; Nectar release; Plant secretion.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300525

Extrafloral nectaries of annatto ( Bixa orellana L.): anatomy, nectar composition and activity during organ development
Provedor de dados: 39
Autores: Miranda,Rafaela Marques de; Nery,Lays Araújo; Ventrella,Marília Contin.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ants; Histochemistry; Nectar release; Secretory structure; Urucum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300468