@misc{10481/70306,
year = {2021},
month = {7},
url = {http://hdl.handle.net/10481/70306},
abstract = {Marchantia polymorpha L. responds to environmental changes using a myriad set of physiological
responses, some unique to the lineage related to the lack of a vascular- and root-system. This
study investigates the physiological response of M. polymorpha to high doses of anthracene analysing
the antioxidant enzymes and their relationship with the photosynthetic processes, as well as their
transcriptomic response. We found an anthracene dose-dependent response reducing plant biomass
and associated to an alteration of the ultrastructure of a 23.6% of chloroplasts. Despite a reduction in
total thallus-chlorophyll of 31.6% of Chl a and 38.4% of Chl b, this was not accompanied by a significant
change in the net photosynthesis rate and maximum quantum efficiency (Fv/Fm). However, we
found an increase in the activity of main ROS-detoxifying enzymes of 34.09% of peroxidase and 692%
of ascorbate peroxidase, supported at transcriptional level with the upregulation of ROS-related
detoxifying responses. Finally, we found that M. polymorpha tolerated anthracene-stress under the
lowest concentration used and can suffer physiological alterations under higher concentrations tested
related to the accumulation of anthracene within plant tissues. Our results show that M. polymorpha
under PAH stress condition activated two complementary physiological responses including the
activation of antioxidant mechanisms and the accumulation of the pollutant within plant tissues to
mitigate the damage to the photosynthetic apparatus.},
organization = {Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)	PIP0235},
organization = {Comahue-University	PIN II 04B216},
organization = {Agencia I+D+i	PICT2017-1484	
PICT2018-00650	
PICT-2019-00073},
organization = {"Fondo Conjunto Uruguay-Mexico" (AUCI-AMEXCID)},
organization = {European Commission	RYC-2013-12481},
organization = {Ministry of Economy and Competitiveness	RYC-2013-12481},
publisher = {MDPI},
keywords = {Antioxidant enzymes},
keywords = {Peroxidases},
keywords = {Liverwort},
keywords = {Polycyclic aromatic hydrocarbons},
keywords = {Anthracene},
keywords = {Photosynthesis},
keywords = {RNA-sequencing},
title = {ROS-Scavenging Enzymes as an Antioxidant Response to High Concentration of Anthracene in the Liverwort Marchantia polymorpha L.},
doi = {10.3390/plants10071478},
author = {Spinedi, Nahuel and Aranda Ballesteros, Elisabet},
}