Editing Fraxinus excelsior (section)

===Ash dieback===
Ash dieback is caused by the [[fungus]] ''[[Hymenoscyphus fraxineus]]'' which was previously known as ''[[Chalara fraxinea]].''
Research into the genetics of the resistance of ash (''Fraxinus excelsior'') has shown that resistance does occur in European populations, but at least for the samples tested, it is neither common nor strong.<ref>{{cite journal |title=Clonal differences in susceptibility to the dieback of ''Fraxinus excelsior'' in southern Sweden |vauthors=Stener LG |year=2012 |journal=Scandinavian Journal of Forest Research |doi=10.1080/02827581.2012.735699 |volume=28 |issue = 3|pages=205–216|s2cid=85292870 }}</ref><ref>{{cite journal |title=Adaptive potential of ash (''Fraxinus excelsior'') populations against the novel emerging pathogen ''Hymenoscyphus pseudoalbidus''|vauthors=Kjær ED |year=2012 |journal=Evolutionary Applications |display-authors=etal |doi=10.1111/j.1752-4571.2011.00222.x |pmid=25568043 |pmc=3353348 |volume=5 |issue = 3|pages=219–228|bibcode=2012EvApp...5..219K }}</ref><ref>{{cite journal |title=Presence of natural genetic resistance in ''Fraxinus excelsior'' (Oleraceae) to ''Chalara fraxinea'' (Ascomycota): an emerging infectious disease|vauthors=McKinney LV |year=2011 |journal=Heredity|display-authors=etal |volume=106 |issue=5|doi=10.1038/hdy.2010.119 |pmid=20823903|pages=788–797|pmc=3186218|bibcode=2011Hered.106..788M }}</ref><ref name="Pliūra-2011">{{cite journal |vauthors=Pliūra A, Lygis V, Suchockas V, Bartkevičius E |year=2011 |title=Performance of twenty four European ''Fraxinus excelsior'' populations in three Lithuanian progeny trials with a special emphasis on resistance to ''Chlara fraxinea'' |journal=Baltic Forestry |volume=17 |issue=1 |pages=17–34 |url=http://www.balticforestry.mi.lt/bf/index.php?option=com_content&view=article&id=267:pliura-a-lygis-v-suchockas-v-and-bartkevicius-e-2011-performance-of-twenty-four-european-fraxinus-excelsior-populations-in-three-lithuanian-progeny-trials-with-a-special-emphasis-on-resistance-to-chlara-fraxinea-baltic-forestry-17-1-17-34&catid=33:baltic-forestry-2011-17-1 |archiveurl=https://web.archive.org/web/20150402142745/http://www.balticforestry.mi.lt/bf/index.php?option=com_content&view=article&id=267:pliura-a-lygis-v-suchockas-v-and-bartkevicius-e-2011-performance-of-twenty-four-european-fraxinus-excelsior-populations-in-three-lithuanian-progeny-trials-with-a-special-emphasis-on-resistance-to-chlara-fraxinea-baltic-forestry-17-1-17-34&catid=33:baltic-forestry-2011-17-1|archive-date=2015-04-02 }}</ref> Due to the importance of ''F. excelsior'' as a host, Jönsson and Thor 2012 find that rare/threatened [[lichen]]s face an unusually high (0.38) [[coextinction risk probability]] ''vis-a-vis'' the host tree in the [[wooded meadow]]s of [[Gotland]], Sweden.<ref name="Oliva-2020">{{cite journal | last1=Oliva | first1=Jonàs | last2=Redondo | first2=Miguel Ángel | last3=Stenlid | first3=Jan | title=Functional Ecology of Forest Disease | journal=[[Annual Review of Phytopathology]] | publisher=[[Annual Reviews (publisher)|Annual Reviews]] | volume=58 | issue=1 | date=2020-08-25 | issn=0066-4286 | doi=10.1146/annurev-phyto-080417-050028 | pages=343–361| pmid=32396761 | bibcode=2020AnRvP..58..343O | s2cid=218618105 }}</ref>