Sucrose synthesis in plant cell

Référence de la vidéo 11936706
Sucrose synthesis in plant cell. Animation showing the stages in the synthesis of the sugar sucrose in a plant cell driven by energy from photosynthesis. The animation starts at bottom left with sunlight being absorbed and converted into chemical energy. Within the cell's chloroplasts (oval), with carbon dioxide as a raw material, the Calvin cycle produces a three-carbon intermediate called phosphoglyceraldehyde (PGAL). This intermediate can be converted into starch, or it can leave the chloroplast in exchange for inorganic phosphate (Pi, exchange at centre). Now within the cytoplasmic matrix (cytosolic), the PGAL can be metabolised further in the Krebs cycle. This can result in it being degraded, or being converted into sucrose (upper right). The sucrose leaves the cell (top right) and enters the phloem tube to be transported to the non-photosynthetic parts of the plant, where it provides nourishment for the plant tissues. For this animation with labels, see K004/2016.
Licence : Droits gérés
Crédit : Science Photo Library / Biocosmos / Francis Leroy & Maximilien Moens
Model Release : Non requis
Durée : 45 Secondes
Aspect ratio : 16/9
Restrictions : -

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