{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:07:26Z","timestamp":1765368446218},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2004,3,10]],"date-time":"2004-03-10T00:00:00Z","timestamp":1078876800000},"content-version":"unspecified","delay-in-days":69,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Lichenologist"],"published-print":{"date-parts":[[2004,1]]},"abstract":"<jats:p>The aim of this investigation was to determine the NH<jats:sub>4<\/jats:sub>Cl concentration threshold, above which negative physiological effects would occur in the nitrophytic lichen <jats:italic>Xanthoria parietina<\/jats:italic>. Over a 10 month period, <jats:italic>X. parietina<\/jats:italic> thalli growing on roof tiles were exposed weekly to NH<jats:sub>4<\/jats:sub>Cl concentrations of 0\u00b704, 0\u00b717, 0\u00b734 or 0\u00b769\u2006M. Nitrogen (N) uptake from ammonium and the concentrations of total thallus N and biont markers (chlorophyll <jats:italic>a<\/jats:italic>, ergosterol and chitin) were measured on four occasions, over the experimental period. <jats:italic>Xanthoria parietina<\/jats:italic> was able to assimilate a significant quantity of the applied ammonium. However, lichens exposed to the two higher concentrations suffered damage to both the photobiont and the mycobiont, as evidenced by reduced chlorophyll <jats:italic>a<\/jats:italic> and ergosterol concentrations, while lichens exposed to the two lower concentrations showed no significant changes in either chlorophyll <jats:italic>a<\/jats:italic> or ergosterol that could be related to the ammonium inputs. <jats:italic>Xanthoria parietina<\/jats:italic> tolerated a weekly irrigation of at least 0\u00b717\u2006M NH<jats:sub>4<\/jats:sub>Cl, corresponding to an N deposition of <jats:italic>c<\/jats:italic>.\u20061000\u2006kg ha<jats:sup>\u22121<\/jats:sup> yr<jats:sup>\u22121<\/jats:sup>, suggesting that this species has a very high tolerance to N pollution.<\/jats:p>","DOI":"10.1017\/s0024282904014124","type":"journal-article","created":{"date-parts":[[2004,3,11]],"date-time":"2004-03-11T04:51:51Z","timestamp":1078980711000},"page":"75-86","source":"Crossref","is-referenced-by-count":44,"title":["Ammonium uptake in the nitrophytic lichen <b><i>Xanthoria parietina<\/i><\/b> and its effects on vitality and balance between symbionts"],"prefix":"10.1017","volume":"36","author":[{"given":"Gisela","family":"GAIO-OLIVEIRA","sequence":"first","affiliation":[]},{"given":"Lena","family":"DAHLMAN","sequence":"additional","affiliation":[]},{"given":"Kristin","family":"PALMQVIST","sequence":"additional","affiliation":[]},{"given":"Cristina","family":"M\u00c1GUAS","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2004,3,10]]},"container-title":["The Lichenologist"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0024282904014124","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,6]],"date-time":"2019-05-06T17:41:10Z","timestamp":1557164470000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0024282904014124\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,1]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2004,1]]}},"alternative-id":["S0024282904014124"],"URL":"https:\/\/doi.org\/10.1017\/s0024282904014124","relation":{},"ISSN":["0024-2829","1096-1135"],"issn-type":[{"value":"0024-2829","type":"print"},{"value":"1096-1135","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,1]]}}}