Scent volatiles emission in tuberose flowers
In this issue, Maiti and Mitra (pp. 2095–2111) assess the connections between the localization of floral scent volatiles, their subsequent emission, and the prior ultrastructural changes to the tepal cells in a widely cultivated floricultural crop, Polianthes tuberosa (tuberose). Using a combination of physiological and cell biology techniques, the authors provide evidence that floral stomata located mostly in the adaxial surface of the petaloid-tepal are involved in the release of scent volatiles, and that their elevated appearance could be a specialized modification of vegetative stomata for efficient scent emission. Collectively, these data provide a more holistic view of floral scent emission in plants.
The cover shows a scanning electron micrograph of a single stoma elevated from the surrounding epidermal layer of the petaloid-tepal. Image supplied by Saborni Maiti and Adinpunya Mitra (Indian Institute of Technology Kharagpur, India).
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