Anatomical, morphological and ecophysiological strategies in Placopsis pycnotheca (lichenized fungi, Ascomycota) allowing rapid colonization of recently deglaciated soils

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dc.contributor.authorRíos, Asunción De los
dc.contributor.authorRaggio Quílez, José
dc.contributor.authorPérez-Ortega, Sergio
dc.contributor.authorVivas, Mercedes
dc.contributor.authorPintado Valverde, Ana
dc.contributor.authorGreen, Thomas George Allan
dc.contributor.authorAscaso, Carmen
dc.contributor.authorGarcía Sancho, Leopoldo
dc.date.accessioned2024-01-16T16:03:12Z
dc.date.available2024-01-16T16:03:12Z
dc.date.issued2011-10
dc.description.abstractThe green algal lichen Placopsis pycnotheca was identified at Pia and Marinelli glaciers (Isla Grande of Tierra de Fuego, Chile) as a primary colonizer of bare soil in areas close to the front of the glacier or around small ponds created after glacier retreatment. Electron microscopy study showed that P. pycnotheca formed a thick hypothallus within which hyphae and their extracellular polymeric substances bind numerous soil particles. This structure augments water holding and soil stabilization capacities and constitutes an early stage in soil crust development. In addition, numerous cephalodia are formed within the hypothallus and subsequently develop upwards towards the thallus surface, sometimes before the formation of squamules with green algae. These anatomical and morphological strategies together with physiological properties such as the long photosynthetic activity period (measured in the laboratory) help explain its pioneering role as a colonizer and its apparently high growth rate.
dc.description.departmentDepto. de Farmacología, Farmacognosia y Botánica
dc.description.facultyFac. de Farmacia
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación, Gobierno de España
dc.description.statuspub
dc.identifier.citationde los Ríos A, Raggio J, Pérez-Ortega S, Vivas M, Pintado A, Green TGA, Ascaso C, Sancho LG (2011) Anatomical, morphological and ecophysiological strategies in Placopsis pycnotheca (lichenized fungi, Ascomycota) allowing rapid colonization of recently deglaciated soils. Flora 206:857–864
dc.identifier.doi10.1016/j.flora.2011.05.002
dc.identifier.issn0367-2530
dc.identifier.officialurlhttps://doi.org/10.1016/j.flora.2011.05.002
dc.identifier.urihttps://hdl.handle.net/20.500.14352/93432
dc.issue.number10
dc.journal.titleFlora
dc.language.isoeng
dc.page.final864
dc.page.initial857
dc.publisherElsevier
dc.relation.projectIDinfo:eu-repo/grantAgreement/CTM2009-12838-CO4-01
dc.relation.projectIDinfo:eu-repo/grantAgreement/CTM2009-12838-CO4-03
dc.rights.accessRightsrestricted access
dc.subject.cdu581.4
dc.subject.keywordAnatomy
dc.subject.keywordCephalodia
dc.subject.keywordGas exchange
dc.subject.keywordReceding glaciers
dc.subject.keywordSoil crust
dc.subject.keywordTerricolous lichen
dc.subject.keywordNitrogen Fixation
dc.subject.ucmFisiología vegetal (Biología)
dc.subject.ucmBotánica (Biología)
dc.subject.unesco2417.19 Fisiología Vegetal
dc.subject.unesco2417.03 Botánica General
dc.titleAnatomical, morphological and ecophysiological strategies in Placopsis pycnotheca (lichenized fungi, Ascomycota) allowing rapid colonization of recently deglaciated soils
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number206
dspace.entity.typePublication
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