Desiccation-induced changes in photochemical processes of
photosynthesis and spectral reflectance in Nostoc commune
(Cyanobacteria, Nostocales) colonies from polar regions

J 2017

Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions

TRNKOVÁ, Kateřina and Miloš BARTÁK

Basic information

Original name

Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions

Name in Czech

Suchem způsobené změny ve fotochemických procesech fotosyntézy a spektrální odrazivosti u polárních kolonií Nostoc commune

Authors

TRNKOVÁ, Kateřina (203 Czech Republic, belonging to the institution) and Miloš BARTÁK (203 Czech Republic, belonging to the institution)

Edition

Phycological research, HOBOKEN, WILEY-BLACKWELL, 2017, 1322-0829

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 1.275

RIV identification code

RIV/00216224:14310/17:00097015

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1111/pre.12157

UT WoS

000394130500005

Keywords (in Czech)

Fluorwescence chlorofylu, sinice, vysychání, NDVI, PRI

Keywords in English

chlorophyll fluorescence; cyanobacteria; dehydration; Normalized Difference Vegetation Index (NDVI); Photochemical Reflectance Index (PRI)

Abstract

V originále

Cyanobacterium Nostoc commune is a species highly resistant against desiccation. In this study, we investigated changes in photochemical processes of photosynthesis and spectral reflectance indices during controlled desiccation of the colonies from Antarctica. In a dehydration process, water potential (WP) reached -3 MPa and values of potential (F-v/F-m) and effective quantum yields (Phi PSII) of photosystem II were kept to high value until 90% of water was lost from the colony, and these values decreased rapidly by further loss of water. This indicates that the colony loses water mostly from the exopoly-saccharidic envelope, not from cells during the initial part of dehydration (relative water content, RWC = 100-10%). Other suggestions of inhibition of photosynthetic processes after 90% loss of water were the increase of the chlorophyll fluorescence parameter F-p/F-s. The F-m' was higher than Fm in hydrated colonies because of state transition which change energy distribution between PS I and PS II, but decreased to same level as Fm in dehydrated colonies. The Normalized Difference Vegetation Index (NDVI) and Photochemical Reflectance Index (PRI) showed concave- and convex-curvilinear relationship with RWC, respectively. The changes of NDVI values were, however, statistically insignificant. PRI values were predominantly below 0 because of phycobiliprotein involvement. These results were compared with the same species in the Arctic region. This is, according to our best knowledge, the first measurement of changes in spectral reflectance indices during desiccation of cyanobacteria.

Links

LM2010009, research and development project

Name: Projekt CzechPolar - České polární stanice: Stavba a operační náklady

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

TRNKOVÁ, Kateřina and Miloš BARTÁK. Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions. Phycological research. HOBOKEN: WILEY-BLACKWELL, 2017, vol. 65, No 1, p. 44-50. ISSN 1322-0829. Available from: https://dx.doi.org/10.1111/pre.12157.

@article{1383508,
   author = {Trnková, Kateřina and Barták, Miloš},
   article_location = {HOBOKEN},
   article_number = {1},
   doi = {http://dx.doi.org/10.1111/pre.12157},
   keywords = {chlorophyll fluorescence; cyanobacteria; dehydration; Normalized Difference Vegetation Index (NDVI); Photochemical Reflectance Index (PRI)},
   language = {eng},
   issn = {1322-0829},
   journal = {Phycological research},
   title = {Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions},
   url = {http://onlinelibrary.wiley.com/doi/10.1111/pre.12157/epdf},
   volume = {65},
   year = {2017}
}

TY  - JOUR
ID  - 1383508
AU  - Trnková, Kateřina - Barták, Miloš
PY  - 2017
TI  - Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions
JF  - Phycological research
VL  - 65
IS  - 1
SP  - 44-50
EP  - 44-50
PB  - WILEY-BLACKWELL
SN  - 13220829
KW  - chlorophyll fluorescence
KW  - cyanobacteria
KW  - dehydration
KW  - Normalized Difference Vegetation Index (NDVI)
KW  - Photochemical Reflectance Index (PRI)
UR  - http://onlinelibrary.wiley.com/doi/10.1111/pre.12157/epdf
L2  - http://onlinelibrary.wiley.com/doi/10.1111/pre.12157/epdf
N2  - Cyanobacterium Nostoc commune is a species highly resistant against desiccation. In this study, we investigated changes in photochemical processes of photosynthesis and spectral reflectance indices during controlled desiccation of the colonies from Antarctica. In a dehydration process, water potential (WP) reached -3 MPa and values of potential (F-v/F-m) and effective quantum yields (Phi PSII) of photosystem II were kept to high value until 90% of water was lost from the colony, and these values decreased rapidly by further loss of water. This indicates that the colony loses water mostly from the exopoly-saccharidic envelope, not from cells during the initial part of dehydration (relative water content, RWC = 100-10%). Other suggestions of inhibition of photosynthetic processes after 90% loss of water were the increase of the chlorophyll fluorescence parameter F-p/F-s. The F-m' was higher than Fm in hydrated colonies because of state transition which change energy distribution between PS I and PS II, but decreased to same level as Fm in dehydrated colonies. The Normalized Difference Vegetation Index (NDVI) and Photochemical Reflectance Index (PRI) showed concave- and convex-curvilinear relationship with RWC, respectively. The changes of NDVI values were, however, statistically insignificant. PRI values were predominantly below 0 because of phycobiliprotein involvement. These results were compared with the same species in the Arctic region. This is, according to our best knowledge, the first measurement of changes in spectral reflectance indices during desiccation of cyanobacteria.
ER  -

TRNKOVÁ, Kateřina and Miloš BARTÁK. Desiccation-induced changes in photochemical processes of photosynthesis and spectral reflectance in Nostoc commune (Cyanobacteria, Nostocales) colonies from polar regions. \textit{Phycological research}. HOBOKEN: WILEY-BLACKWELL, 2017, vol.~65, No~1, p.~44-50. ISSN~1322-0829. Available from: https://dx.doi.org/10.1111/pre.12157.

Detailed Information on Publication Record