Editing Chloroplast (section)

==== Euglenophytes ====
{{See also|Euglenophyceae}}
[[File:Two Euglena.jpg|thumb|''[[Euglena]]'', a [[euglenophyte]], contains secondary chloroplasts from green algae.]]

The euglenophytes are a group of common [[flagellated]] [[protists]] that contain chloroplasts derived from a green alga.<ref name="Keeling-2004" /> Euglenophytes are the only group outside [[Diaphoretickes]] that have chloroplasts without performing [[kleptoplasty]].<ref>{{Cite journal |last1=Burki |first1=Fabien |last2=Roger |first2=Andrew J. |last3=Brown |first3=Matthew W. |last4=Simpson |first4=Alastair G.B. |date=2020-01-01 |title=The New Tree of Eukaryotes |url=https://linkinghub.elsevier.com/retrieve/pii/S0169534719302575 |journal=Trends in Ecology & Evolution |volume=35 |issue=1 |pages=43–55 |doi=10.1016/j.tree.2019.08.008 |pmid=31606140 |bibcode=2020TEcoE..35...43B |issn=0169-5347}}</ref><ref>{{Cite journal |last1=Sibbald |first1=Shannon J. |last2=Archibald |first2=John M. |date=2020-05-20 |title=Genomic Insights into Plastid Evolution |url=https://academic.oup.com/gbe/article/12/7/978/5836826 |journal=Genome Biology and Evolution |volume=12 |issue=7 |pages=978–990 |doi=10.1093/gbe/evaa096|pmid=32402068 |pmc=7348690 }}</ref> Euglenophyte chloroplasts have three membranes. It is thought that the membrane of the primary endosymbiont host was lost (e.g. the green algal membrane), leaving the two cyanobacterial membranes and the secondary host's phagosomal membrane.<ref name="Keeling-2004" /> Euglenophyte chloroplasts have a [[pyrenoid]] and [[thylakoid]]s stacked in groups of three. The carbon fixed through photosynthesis is stored in the form of [[paramylon]], which is contained in membrane-bound granules in the cytoplasm of the euglenophyte.<ref name="Kim-2009" /><ref name="Keeling-2010" />