PMID- 31940766
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2223-7747 (Print)
IS  - 2223-7747 (Electronic)
IS  - 2223-7747 (Linking)
VI  - 9
IP  - 1
DP  - 2020 Jan 11
TI  - Seasonality and Small Spatial-Scale Variation of Chlorophyll a Fluorescence in 
      Bryophyte Syntrichia ruralis [Hedw.] in Semi-Arid Sandy Grassland, Hungary.
LID - 10.3390/plants9010092 [doi]
LID - 92
AB  - Bryophytes face challenges due to global climate change which is leading to 
      in-depth research in monitoring and studying their photosynthetic activity. The 
      aim of this preliminary experiment was to study the seasonal variation trend in 
      the chlorophyll a fluorescence parameters, Fv/Fm (ratio of variable to maximum 
      fluorescence), photochemical fluorescence quenching (qP), photochemical quantum 
      yield of photosystem II (PhiPS II), fluorescence quenching (qN), and 
      non-photochemical quenching (NPQ), in the moss cushions of Syntrichia ruralis 
      [Hedw.] collected from semi-arid sandy dunes for two slopes i.e., north-east (NE) 
      and south-west (SW) direction. Our results showed a seasonal and small-spatial 
      scale variation trend in all chlorophyll fluorescence parameters. These 
      variations are due to different seasonal conditions referring to different 
      degrees of environmental stress. PhiPS II and qP values were maximum in winter and 
      in spring seasons while Fv/Fm, NPQ and qN were maximum in summer. Based on the 
      different exposition of dunes, the SW slope showed increased values of the 
      effective quantum yield of PS II and qP in comparison to the NE slope due to the 
      optimal microclimate conditions for their expansion. These results may refer to 
      the future changing in diversification and coverage of the Syntrichia species in 
      semi-arid sandy grassland due to more effective metabolism in the beneficial 
      microclimatic conditions.
FAU - Ruchika
AU  - Ruchika
AD  - Doctoral School of Biological Sciences, Institute of Botany and Ecophysiology, 
      Szent Istvan University, Pater Karoly utca 1., H-2100 Godollo, Hungary.
FAU - Csintalan, Zsolt
AU  - Csintalan Z
AD  - Doctoral School of Biological Sciences, Institute of Botany and Ecophysiology, 
      Szent Istvan University, Pater Karoly utca 1., H-2100 Godollo, Hungary.
FAU - Peli, Evelin Ramona
AU  - Peli ER
AD  - Department of Botany, University of Veterinary Medicine, Istvan utca. 2., H-1078 
      Budapest, Hungary.
LA  - eng
GR  - SHE 935-1/2016/Tempus Public foundation ,Stipendium Hungaricum Scholarship, Govt. 
      of Hungary/
PT  - Journal Article
DEP - 20200111
PL  - Switzerland
TA  - Plants (Basel)
JT  - Plants (Basel, Switzerland)
JID - 101596181
PMC - PMC7020395
OTO - NOTNLM
OT  - desiccation tolerance
OT  - dune
OT  - maximum photochemical efficiency of photosystem II
OT  - non-photochemical quenching
OT  - photochemical quantum yield of photosystem II
OT  - photochemical quenching
OT  - poikilohydric
COIS- The authors declare no conflict of interest. The funding sponsors had no role in 
      the design of the study; in the collection, analyses, or interpretation of data; 
      in the writing of the manuscript; and in the decision to publish the results.
EDAT- 2020/01/17 06:00
MHDA- 2020/01/17 06:01
PMCR- 2020/01/11
CRDT- 2020/01/17 06:00
PHST- 2019/11/19 00:00 [received]
PHST- 2019/12/24 00:00 [revised]
PHST- 2020/01/09 00:00 [accepted]
PHST- 2020/01/17 06:00 [entrez]
PHST- 2020/01/17 06:00 [pubmed]
PHST- 2020/01/17 06:01 [medline]
PHST- 2020/01/11 00:00 [pmc-release]
AID - plants9010092 [pii]
AID - plants-09-00092 [pii]
AID - 10.3390/plants9010092 [doi]
PST - epublish
SO  - Plants (Basel). 2020 Jan 11;9(1):92. doi: 10.3390/plants9010092.