Photosynthetic characteristics of lichens of genus Umbilicaria
from SW Greenland (Nuuk area) in reponse to thallus
dehydration.

D 2013

Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration.

BARTÁK, Miloš, Eric HANSEN, Jana HAZDROVÁ, Kateřina SKÁCELOVÁ, Kateřina TRNKOVÁ et. al.

Basic information

Original name

Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration.

Name in Czech

Fotosyntetické charakteristiky ve vztahu k dehydraci stélky u lišejníků rodu Umbilicaria z jihozápadního Grónska (oblast Nuuk)

Authors

BARTÁK, Miloš, Eric HANSEN, Jana HAZDROVÁ, Kateřina SKÁCELOVÁ, Kateřina TRNKOVÁ and Pavel PROŠEK

Edition

1st. Krakow, Poland, Sborník, p. 1-2, 2 pp. 2013

Publisher

Jagellonian University,

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Poland

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

electronic version available online

References:

on line konferenční sborník

Organization unit

Faculty of Science

Keywords (in Czech)

lišejníky Arktida fotosyntéza vysychání

Keywords in English

lichens Arctics photosynthesis desiccation

Abstract

ORIG CZ

V originále

Thalli of foliose epilithic lichens Umbilicaria arctica and U.hyperborea were collected on the rocks at several locations in the neighbourhood of Nuuk, and transported to the Czech Republic where kept in dry state in dark at 5 oC before experiments. After 48 h rehydration, simultaneous measurements of (1)effective quantum yield (YieldPSII) of photosystem II, (2)photochemical reflectance index (PRI), (3)normalized difference vegetation index (NDVI), (4)chlorophyll fluorescence fast kinetics (OJIP) were made in response to gradual thallus dehydration expressed as water potential (WP). Dehydration-response curves of YieldPSII showed S-curve relationship. In both species, the first signs of inhibition of photosynthetic processes appeared at WP of about -10 MPa. Further dehydration led to a decrease in YieldPSII and, finally, full inhibition of PSII photochemical photosynthetic processes. Critical point for PSII processes was found at WP of about -25 MPa, similarly to other epilithic lichens investigated by this method

In Czech

Vyl studován vztah mezi fůznými fotosyntetickými charakteristikami lišejníků Umbilicaria arctica a Umbilicaria Hyperboera ve vztahu k vyschnutí stélky.

Links

1-7/2009-14, interní kód MU

Name: Pokročilé metody v bioklimatologii a ekologické fyziologii rostlin, aplikace ve výuce a výzkumu na MU Brno, včetně mzdových nákladů a odvodů na sociální a zdravotní pojištění

Investor: South-Moravian Region

Files attached

Bartak_et_al_Abstract_Krakow_ABSTRACT_T_2795.pdf

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Citovat

BARTÁK, Miloš, Eric HANSEN, Jana HAZDROVÁ, Kateřina SKÁCELOVÁ, Kateřina TRNKOVÁ and Pavel PROŠEK. Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration. (Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration). Online. In Maja Lisowska. Sborník. 1st. Krakow, Poland: Jagellonian University,, 2013, p. 1-2.

@inproceedings{1105651,
   author = {Barták, Miloš and Hansen, Eric and Hazdrová, Jana and Skácelová, Kateřina and Trnková, Kateřina and Prošek, Pavel},
   address = {Krakow, Poland},
   booktitle = {Sborník},
   edition = {1st.},
   editor = {Maja Lisowska},
   keywords = {lichens Arctics photosynthesis desiccation},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Krakow, Poland},
   pages = {1-2},
   publisher = {Jagellonian University,},
   title = {Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration.},
   url = {http://www.assw2013.us.edu.pl/?p=abstract},
   year = {2013}
}

TY  - JOUR
ID  - 1105651
AU  - Barták, Miloš - Hansen, Eric - Hazdrová, Jana - Skácelová, Kateřina - Trnková, Kateřina - Prošek, Pavel
PY  - 2013
TI  - Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration.
PB  - Jagellonian University,
CY  - Krakow, Poland
KW  - lichens Arctics photosynthesis desiccation
UR  - http://www.assw2013.us.edu.pl/?p=abstract
L2  - http://www.assw2013.us.edu.pl/?p=abstract
N2  - Thalli of foliose epilithic lichens Umbilicaria arctica and U.hyperborea were collected on the rocks at several locations in the neighbourhood of Nuuk, and transported to the Czech Republic where kept in dry state in dark at 5 oC before experiments. After 48 h rehydration, simultaneous measurements of (1)effective quantum yield (YieldPSII) of photosystem II, (2)photochemical reflectance index (PRI), (3)normalized difference vegetation index (NDVI), (4)chlorophyll fluorescence fast kinetics (OJIP) were made in response to gradual thallus dehydration expressed as water potential (WP). Dehydration-response curves of YieldPSII showed S-curve relationship. In both species, the first signs of inhibition of photosynthetic processes appeared at WP of about -10 MPa. Further dehydration led to a decrease in YieldPSII and, finally, full inhibition of PSII photochemical photosynthetic processes. Critical point for PSII processes was found at WP of about -25 MPa, similarly to other epilithic lichens investigated by this method
ER  -

BARTÁK, Miloš, Eric HANSEN, Jana HAZDROVÁ, Kateřina SKÁCELOVÁ, Kateřina TRNKOVÁ and Pavel PROŠEK. Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration. (Photosynthetic characteristics of lichens of genus Umbilicaria from SW Greenland (Nuuk area) in reponse to thallus dehydration). Online. In Maja Lisowska. \textit{Sborník}. 1st. Krakow, Poland: Jagellonian University,, 2013, p.~1-2.

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