Several Second Enbiosymbioses occurred then: two involving a Red
Algae and other heterotrophic eucaryotes and giving birth to both Brown
Algae and Dinoflagellates lineages; another involving a Green Algae and
-a heterotrophic eucaryot and giving birth to Euglens.\\
-The interesting with the tree produced (especially from DOGMA) is
+a heterotrophic eucaryot and giving birth to Euglens\cite{mcfadden2001primary}.\\
+The interesting point with the tree produced (especially from DOGMA) is
that organisms resulting from the first endosymbiosis are distributed in
every of the lineage found in the chloroplast genome structure
evolution: with Red Algae chloroplasts together in one lineage, and
-Green Algae and Land Plants chloroplasts together in antoher lineage;
-while oranisms resulting from secondary endosymbioses are localized in
+Green Algae and Land Plants chloroplasts together in another lineage;
+while organisms resulting from secondary endosymbioses are more localized in
the tree: both the chloroplasts of Brown Algae and Dinoflagellates
representatives are found exclusively in the lineage also comprising the
Red Algae chloroplasts from which they evolved, while the Euglens
chloroplasts are related to the Green Algae chloroplasts from which they
-evolved. This make sense in term of biology and history of lineages and
+evolved. This makes sense in terms of biology, history of lineages, and
theories of chloroplasts (and so photosynthetic ability) origins in
-different Eucaryotic lineages.
+different Eucaryotic lineages\cite{mcfadden2001primary}.
Interestingly, The sole organisms included that possesses a
chloroplast (and so a chloroplastic genome) but that have lost the
photosynthetic ability (being parasitic plants) are found at the base of
-the tree, and not together with its related species phylogenetically,
-meaning that functional chloroplast genes are evolutionnary constrained
+the tree, and not together with their phylogenetically related species. This means that functional chloroplast genes are evolutionnary constrained
when used in photosynthetic process, but loose rapidly their efficiency
-when not used. They are Cuscuta-grovonii an Angiosperm (flowering plant)
+when not used, as recently observed for a species of Angiosperms\cite{li2013complete}. These species are \textit{Cuscuta-grovonii} an Angiosperm (flowering plant)
at the base of the DOGMA Angiosperm-Conifers branch, and
-Epipactis-virginiana also an Angiosperm at the complete base of the tree.
+\textit{Epipactis-virginiana} also an Angiosperm at the complete base of the tree.
Another interesting result is that land plants that
-represent single sublineage originating from the large and diverse
+represent a single sublineage originating from the large and diverse
lineage of green algae in Eucaryots history are present in two different
branches of the DOGMA tree, associated with Green Algae, one branch
comprising the basal grade of land plants (mosses and ferns) and the second
-comprising the most internal lineage of land plants (Conifers and flowering plants).
+comprising the most internal lineages of land plants (Conifers and flowering plants).
But independently of their split in two distinct branches of the DOGMA
tree, the Land Plants always show a higher number of functional genes in
-their chloroplasts than the green algae from which they emerged, probably meaning that
+their chloroplasts than the green algae from which they emerged, probably meaning that the
terrestrial way of life necessitates more functional genes for an
-optimal photosynthesis than marine way of life. But a more detailed
-analysis of selected genes is necessary to better understad the reasons why?
+optimal photosynthesis than the marine way of life. However, a more detailed
+analysis of selected genes is necessary to better understand the reasons why?
