pyrenoid

It has a single chloroplast which is plate-like or cup-shaped and contains a pyrenoid.

Pyrenoid with starch sheath is present in the posterior end of the chloroplast.

It is closely related to the model green algae, Chlamydomonas, and distinguished mainly through the absence of a pyrenoid.

The nucleomorphs are never in the pyrenoid, and there is never a scalariform furrow.

The species name pyrenoidosa refers to the presence of a prominent pyrenoid within the Chlorella chloroplast.

In most species, this chloroplast is fused with other organelles to form a large pyrenoid that both manufactures and stores food.

There are no thylakoid membranes invading the pyrenoid, which is unlike other symbiotic dinoflagellates.

Chloroplasts plate-like with 1 pyrenoid.

The cell contains a stellate chloroplast with prominent pyrenoid, as well as single thylakoids (characteristic of division Rhodophyta).

Polytoma possesses a leukoplast in place of a chloroplast, in which many starch grains are concentrated; there is no pyrenoid.

It has a cell wall made of hydroxyproline-rich glycoproteins, a large cup-shaped chloroplast, a large pyrenoid, and an "eyespot" that senses light.

He has investigated carbon concentrating mechanisms (see photosynthesis) in algae and hornworts, focusing on the molecular determinants of the chloroplast pyrenoid in Chlamydomonas.

Each cell has two flagella with two contractile vacuoles at their base, an eyespot, and a large cup-shaped chloroplast with at least one pyrenoid.

In some organisms, the concentration of RubisCO in the pyrenoid is so high that the contents of the organelle assume a crystalline appearance.

The lamellae comprise three closely appressed (stacked) thylakoids, and are attached by two stalks to the pyrenoid surrounded by a starch sheath (Fig. 10).

Instead of the pyrenoid, cyanobacteria contain Carboxysomes, which have a protein shell, and linker proteins packing RuBisCO inside with a very regular structure.

The pyrenoid is not a membrane bound compartment, but is found within the chloroplast, often surrounded by a starch sheath (which is not thought to serve a function in the CCM).

The defining features of this family include the single invagination of the pyrenoid where the mitochondrial membrane fits into it and the "decapore" - a ring of 10 pores through the thick cell wall.

Some plants, many algae, and photosynthetic bacteria have overcome this limitation by devising means to increase the concentration of carbon dioxide around the enzyme, including C4 carbon fixation, crassulacean acid metabolism and using pyrenoid.

In nearly all species of eukaryotic algae (Chloromonas being one notable exception), upon induction of the CCM, 95% of RuBisCO is densely packed into a single subcellular compartment: the pyrenoid.