On the basis that apicomplexans possess a plastid surrounded by 4 membranes, and that peridinin dinoflagellates possess a plastid surrounded by 3 membranes, Petersen et al . have been unable to rule our that the shared stramenopile-alveolate plastid could have been recycled multiple times in the alveolate phylum, the source being stramenopile-alveolate donors, through the mechanism of ingestion and endosymbiosis.
22.
On the basis that apicomplexans possess a plastid surrounded by 4 membranes, and that peridinin dinoflagellates possess a plastid surrounded by 3 membranes, Petersen et al . have been unable to rule our that the shared stramenopile-alveolate plastid could have been recycled multiple times in the alveolate phylum, the source being stramenopile-alveolate donors, through the mechanism of ingestion and endosymbiosis.
23.
On the basis that apicomplexans possess a plastid surrounded by 4 membranes, and that peridinin dinoflagellates possess a plastid surrounded by 3 membranes, Petersen et al . have been unable to rule our that the shared stramenopile-alveolate plastid could have been recycled multiple times in the alveolate phylum, the source being stramenopile-alveolate donors, through the mechanism of ingestion and endosymbiosis.
24.
"C . velia " has typical features of alveolates, being phylogenetically related to Apicomplexa ( a subgroup of alveolates ), and contains a photosynthetic plastid ( chloroplast ) while the apicomplexans have a non-photosynthetic plastid called the apicoplast . " C . velia " is also related to another subgroup of alveolates the dinoflagellates of which most are photosynthetic.
25.
"C . velia " has typical features of alveolates, being phylogenetically related to Apicomplexa ( a subgroup of alveolates ), and contains a photosynthetic plastid ( chloroplast ) while the apicomplexans have a non-photosynthetic plastid called the apicoplast . " C . velia " is also related to another subgroup of alveolates the dinoflagellates of which most are photosynthetic.
26.
"C . velia " has typical features of alveolates, being phylogenetically related to Apicomplexa ( a subgroup of alveolates ), and contains a photosynthetic plastid ( chloroplast ) while the apicomplexans have a non-photosynthetic plastid called the apicoplast . " C . velia " is also related to another subgroup of alveolates the dinoflagellates of which most are photosynthetic.
27.
The plastid genome of " C . velia " is unusual in that there is evidence it may be linear and contains split genes for key photosystem genes . The linear state of the " C . velia " plastid genome is a reminder that " C . velia " is not an ancestral organism, but is a derived form, which evolved from an ancestral photosynthetic alveolate that presumably had a circular plastid genome, just as the other known chromerid " Vitrella brassicaformis " does.
