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Sucrose-induced stomatal closure is conserved across evolution

As plants evolved to function on land, they developed stomata for effective gas exchange, for photosynthesis and for controlling water loss. We have recently shown that sugars, as the end product of photosynthesis, close the stomata of various angiosperm species, to coordinate sugar production with...

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Detalles Bibliográficos
Autores principales: Kottapalli, Jayaram, David-Schwartz, Rakefet, Khamaisi, Belal, Brandsma, Danja, Lugassi, Nitsan, Egbaria, Aiman, Kelly, Gilor, Granot, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6185732/
https://www.ncbi.nlm.nih.gov/pubmed/30312346
http://dx.doi.org/10.1371/journal.pone.0205359
Descripción
Sumario:As plants evolved to function on land, they developed stomata for effective gas exchange, for photosynthesis and for controlling water loss. We have recently shown that sugars, as the end product of photosynthesis, close the stomata of various angiosperm species, to coordinate sugar production with water loss. In the current study, we examined the sugar responses of the stomata of phylogenetically different plant species and species that employ different photosynthetic mechanisms (i.e., C(3), C(4) and CAM). To examine the effect of sucrose on stomata, we treated leaves with sucrose and then measured their stomatal apertures. Sucrose reduced stomatal aperture, as compared to an osmotic control, suggesting that regulation of stomata by sugars is a trait that evolved early in evolutionary history and has been conserved across different groups of plants.