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http://hdl.handle.net/1843/37199| Type: | Artigo de Periódico |
| Title: | How does the nectar of stomata-free nectaries cross the cuticle? |
| Authors: | Elder Antônio Sousa e Paiva |
| 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 controversial. Hydrophilic pathways in the cuticle and repetitive cycles of rupture or cuticle detachment are the main routes for nectar release in stomata-free nectaries. In addition to nectar, there are other exogenous secretions that must leave the protoplast and reach the plant surface to perform their function. The ways by which nectar is released discussed herein are likely relevant to understanding the release of other hydrophilic products of the secretory process of plants. |
| Subject: | Néctar de plantas Estômatos de Plantas Plantas |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICB - DEPARTAMENTO DE BOTÂNICA |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://doi.org/10.1590/0102-33062016abb0444 |
| URI: | http://hdl.handle.net/1843/37199 |
| Issue Date: | 2017 |
| metadata.dc.relation.ispartof: | Acta Botanica Brasilica |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| How does the nectar of stomata-free nectaries cross the cuticle.pdf | 3.38 MB | Adobe PDF | View/Open |
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