Response of short-term heat shock on photosynthetic activity of soil crust cyanobacteria
Jazyk angličtina Země Rakousko Médium print-electronic
Typ dokumentu časopisecké články
Grantová podpora
RVO 67985939
Institutional long-term research development project (IBOT)
LM2015078
Czech Polar2 - Czech Polar Research Infrastructure
MŠMT- 42310/2012-640
MSMT,Government of Czech Republic and UGC, INDIA
PubMed
31359224
DOI
10.1007/s00709-019-01418-7
PII: 10.1007/s00709-019-01418-7
Knihovny.cz E-zdroje
- Klíčová slova
- Cyanobacteria, Heat stress, OJIP transient, Photosynthesis,
- MeSH
- bakteriální proteiny metabolismus MeSH
- časové faktory MeSH
- chlorofyl a metabolismus MeSH
- fluorescence MeSH
- fotosyntetické reakční centrum - proteinové komplexy metabolismus MeSH
- fotosyntéza fyziologie MeSH
- kvantová teorie MeSH
- pravděpodobnost MeSH
- půdní mikrobiologie * MeSH
- reakce na tepelný šok * MeSH
- sinice fyziologie MeSH
- transport elektronů MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- bakteriální proteiny MeSH
- chlorofyl a MeSH
- fotosyntetické reakční centrum - proteinové komplexy MeSH
Short-term heat exposure in tropical regions can generate severe stress in the photosynthetic activity of soil crust cyanobacteria. We investigated the responses of two filamentous cyanobacteria, Scytonema tolypothrichoides and Tolypothrix bouteillei, to 1hr exposure at 35, 45, and 55 °C using variable chlorophyll fluorescence. Protocols for maximum quantum yield (FV/FM) and dark recovery of chlorophyll a fluorescence (OJIP) transient were applied. Heat exposure caused damage to the donor side of PSII, indicated by a decrease in FV/FM and a rapid increase in F0. After heat stress, photochemical energy utilization (φPo, φETo, and φRE1o) declined and energy dissipation (φDIo) increased. At 45 °C, the photosynthetic apparatus was reversibly damaged, since full recovery was observed after 7 days of relaxation. S. tolypothrichoides was more resistant to heat stress than T. bouteillei, confirming better adaptation to higher temperatures as observed in growth experiments.
Institute of Botany Academy of the Sciences of Czech Republic Třeboň 135 Czech Republic
School of Life Sciences University of Hyderabad Gachibowli Hyderabad 500046 India
Zobrazit více v PubMed
Folia Microbiol (Praha). 2002;47(1):61-7 PubMed
J Plant Physiol. 2005 Feb;162(2):181-94 PubMed
Microb Ecol. 2002 Jan;43(1):13-25 PubMed
Photosynth Res. 2012 Mar;111(3):303-14 PubMed
Photosynth Res. 1984 Jun;5(2):139-57 PubMed
Microbiol Mol Biol Rev. 1998 Sep;62(3):667-83 PubMed
J Exp Bot. 2000 Apr;51(345):659-68 PubMed
J Photochem Photobiol B. 2011 Jul-Aug;104(1-2):236-57 PubMed
Biochim Biophys Acta. 1999 May 26;1412(1):1-28 PubMed
Environ Sci Pollut Res Int. 2012 Jun;19(5):1755-62 PubMed
Plant Physiol Biochem. 2005 Apr;43(4):389-95 PubMed
Photosynth Res. 2008 Oct-Dec;98(1-3):541-50 PubMed
J Plant Physiol. 2011 Nov 15;168(17):2063-71 PubMed
Photosynth Res. 2007 Nov-Dec;94(2-3):275-90 PubMed
