Nectar: Generation, regulation, and ecological functions
929 views · Published 10 December 2018 · 2:50 · Indexed 18 October 2026
Channel: Cell Press · 2018 · Science & Technology
Nectar contains water, sugars and amino acids to attract pollinators and defenders. Despite the importance of nectar, little is known about the synthesis of its components and the regulation of their secretion. However a recent breakthrough discovery is the identification of a gene that encodes apoplastic invertase of Arabidopsis thaliana, representing the first gene whose function is required for floral nectar secretion. This video presents a vesicle-based, merocrine secretion as the likely commmon mechanism of nectar secretion and highlights the likely roles of invertases for uploading of sucrose from the phloem, carbohydrate mobilization during active secretion and the post-secretory adjustment of the sucrose:hexose ratio of nectar. Read the paper: https://www.cell.com/trends/plant-science/fulltext/S1360-1385(11)00006-9
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