Editing Ulvophyceae (section)

==Evolution==
The origin and early diversification of the Ulvophyceae likely took place in the late [[Neoproterozoic]],<ref name="VerbruggenAshworth2009">{{cite journal | vauthors = Verbruggen H, Ashworth M, LoDuca ST, Vlaeminck C, Cocquyt E, Sauvage T, Zechman FW, Littler DS, Littler MM, Leliaert F, De Clerck O | title = A multi-locus time-calibrated phylogeny of the siphonous green algae | journal = Molecular Phylogenetics and Evolution | volume = 50 | issue = 3 | pages = 642–653 | date = March 2009 | pmid = 19141323 | doi = 10.1016/j.ympev.2008.12.018 | author-link8 = Diane S. Littler }}</ref><ref name="CocquytVerbruggen2010">{{cite journal | vauthors = Cocquyt E, Verbruggen H, Leliaert F, De Clerck O | title = Evolution and cytological diversification of the green seaweeds (Ulvophyceae) | journal = Molecular Biology and Evolution | volume = 27 | issue = 9 | pages = 2052–2061 | date = September 2010 | pmid = 20368268 | doi = 10.1093/molbev/msq091 | doi-access = free }}</ref> though may have taken place earlier, in the Mesoproterozoic.<ref>{{cite journal | vauthors = Hou Z, Ma X, Shi X, Li X, Yang L, Xiao S, De Clerck O, Leliaert F, Zhong B | title = Phylotranscriptomic insights into a Mesoproterozoic-Neoproterozoic origin and early radiation of green seaweeds (Ulvophyceae) | journal = Nature Communications | volume = 13 | issue = 1 | pages = 1610 | date = March 2022 | pmid = 35318329 | pmc = 8941102 | doi = 10.1038/s41467-022-29282-9 }}</ref> Although most contemporary ulvophytes are marine macroalgae ([[seaweed]]s), [[ancestor|ancestral]] ulvophytes may have been freshwater, unicellular green algae. Molecular phylogenetic evidence suggests that macroscopic growth was achieved independently in the various major lineages of Ulvophyceae ([[Ulvales]]-[[Ulotrichales]], [[Trentepohliales]], [[Cladophorales]], [[Bryopsidales]] and [[Dasycladales]]).<ref name="CocquytVerbruggen2010" /> The earliest known representative is the [[cladophorales]] ''Proterocladus antiquus'' from the [[Mesoproterozoic]]-[[Neoproterozoic]] boundary in North China.<ref>{{cite journal | last1 = Tang | first1 = Qing | last2 = Pang | first2 = Ke | last3 = Yuan | first3 = Xunlai | last4 = Xiao | first4 = Shuhai | title = A one-billion-year-old multicellular chlorophyte | journal = Nature Ecology & Evolution | volume = 4 | pages = 543–549 | date = February 2020 | doi = 10.1038/s41559-020-1122-9 | pmc = 8668152 }}</ref>

Current hypothesis on relationships among the main clades of Ulvophyceae<ref name="leliaert">{{cite journal | vauthors = Leliaert F, Smith DR, Moreau H, Herron MD, Verbruggen H, Delwiche CF, De Clerck O |year=2012 |title=Phylogeny and molecular evolution of the green algae |url=http://images.algaebase.org/pdf/5628E58F0ecc431F0CsJm2B04CAD/49951.pdf |doi=10.1080/07352689.2011.615705 |journal=Critical Reviews in Plant Sciences |volume=31 |pages=1–46 |s2cid=17603352 }}</ref><ref name="ŠkaloudKalina2013">{{cite journal | vauthors = Škaloud P, Kalina T, Nemjová K, De Clerck O, Leliaert F | title = Morphology and Phylogenetic Position of the Freshwater Green Microalgae Chlorochytrium (Chlorophyceae) and Scotinosphaera (Scotinosphaerales, ord. nov., Ulvophyceae) | journal = Journal of Phycology | volume = 49 | issue = 1 | pages = 115–129 | date = February 2013 | pmid = 27008394 | doi = 10.1111/jpy.12021 | s2cid = 7359581 }}</ref> are shown below.

{{clade | style=font-size:80%;line-height:80%
	|1={{clade
		|1={{clade
			|1={{clade
				|1={{clade
					|1=[[Cladophorales]]
					|2=''[[Blastophysa]]''
					|3={{clade
						|1=[[Dasycladales]]
						|2=[[Bryopsidales]]
						}}
					|4=[[Trentepohliales]]
					}}
				|2=''[[Ignatius (algae)|Ignatius]]'' clade
				}}
			|2={{clade
				|1={{clade
					|1=[[Ulvales]]
					|2=''[[Phaeophila]]'', ''[[Bolbocoleon]]'' |state2=dashed
					}}
				|2=[[Ulotrichales]]
				|3=''[[Desmochloris]]'', ''[[Halochlorococcum]]'' |state3=dashed
				}}
			}}
		|2=[[Scotinosphaerales]]
		|3=[[Oltmannsiellopsidales]]
		}}
}}