The oleaginous green alga Lobosphaera incisa accumulates high amounts of arachidonic acid (ARA) rich triacylglycerols (TAG) in cytoplasmic lipid droplets (LDs), predominantly under nitrogen starvation conditions. Intensive LD formation is accompanied by dismantling of chloroplast and endomembrane systems and recycling of cellular components and nutrient reserves. The nutrient stresses or other environmental cues may induce or exploit autophagy system in algal cells. Autophagy is a ubiquitous process by which eukaryotic cells degrade and recycle cellular components. A close interaction between LD metabolism and autophagy system has been recently revealed in yeast and mammalian cells; less is known in microalgae.
|State||Published - 3 Jul 2016|