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 a Miloš BARTÁK

Základní údaje

Originální název

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

Název česky

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

Autoři

TRNKOVÁ, Kateřina (203 Česká republika, domácí) a Miloš BARTÁK (203 Česká republika, domácí)

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.275

Kód RIV

RIV/00216224:14310/17:00097015

Organizační jednotka

Přírodovědecká fakulta

DOI

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

UT WoS

000394130500005

Klíčová slova česky

Fluorwescence chlorofylu, sinice, vysychání, NDVI, PRI

Klíčová slova anglicky

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

Štítky

NZ, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 5. 2018 10:45, Ing. Nicole Zrilić

Anotace

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.

Návaznosti

LM2010009, projekt VaV

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

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar - České polární stanice: Stavba a operační náklady

Citovat

TRNKOVÁ, Kateřina a 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, roč. 65, č. 1, s. 44-50. ISSN 1322-0829. Dostupné z: 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 a 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, roč.~65, č.~1, s.~44-50. ISSN~1322-0829. Dostupné z: https://dx.doi.org/10.1111/pre.12157.

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