2007
DOI: 10.1104/pp.107.106872
|View full text |Cite
|
Sign up to set email alerts
|

Photoprotection in the Lichen Parmelia sulcata: The Origins of Desiccation-Induced Fluorescence Quenching

Abstract: Lichens, a symbiotic relationship between a fungus (mycobiont) and a photosynthetic green algae or cyanobacteria (photobiont), belong to an elite group of survivalist organisms termed resurrection species. When lichens are desiccated, they are photosynthetically inactive, but upon rehydration they can perform photosynthesis within seconds. Desiccation is correlated with both a loss of variable chlorophyll a fluorescence and a decrease in overall fluorescence yield. The fluorescence quenching likely reflects ph… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2

Citation Types

15
79
0
1

Year Published

2009
2009
2014
2014

Publication Types

Select...
5
4

Relationship

0
9

Authors

Journals

citations
Cited by 82 publications
(97 citation statements)
references
References 33 publications
15
79
0
1
Order By: Relevance
“…Our data confirm that this phenomenon applies to desiccation-tolerant cyanolichens, chlorolichens, and green algae, which is consistent with the report by Lange et al (1989). The mechanism by which fluorescence is quenched during desiccation has been examined previously (Komura et al, 2006(Komura et al, , 2010Veerman et al, 2007;Miyake et al, 2011;Kosugi et al, 2013). Meanwhile, the mechanism underlying the inability to rereduce P700 + under dry/light conditions in desiccation-tolerant photosynthetic organisms is not well understood.…”
Section: Discussionsupporting
confidence: 80%
“…Our data confirm that this phenomenon applies to desiccation-tolerant cyanolichens, chlorolichens, and green algae, which is consistent with the report by Lange et al (1989). The mechanism by which fluorescence is quenched during desiccation has been examined previously (Komura et al, 2006(Komura et al, , 2010Veerman et al, 2007;Miyake et al, 2011;Kosugi et al, 2013). Meanwhile, the mechanism underlying the inability to rereduce P700 + under dry/light conditions in desiccation-tolerant photosynthetic organisms is not well understood.…”
Section: Discussionsupporting
confidence: 80%
“…In such way, overenergization of PSII and ROS formation is avoided. Moreover, presence of strong quencher in core of PSII and/or PSII antennae is reported by Veerman et al (2007) for Parmelia sulcata desiccating on light. Chemical structure of the quencher, how-ever, is not know.…”
Section: Discussionmentioning
confidence: 99%
“…The spectrum of the 95 ps component peaked at ϳ690 nm and possessed a very broad far-red emission with a center at 720 nm. This emission is typical for the room temperature fluorescence spectrum of PSI (42)(43)(44)(45)(46). The other two components have similar spectra with very low amplitudes in the red region accounting only for their corresponding vibronic satellites.…”
mentioning
confidence: 88%