Differential Responses in Activity of Antioxidant Enzymes to Different Environmental Stresses in Arabidopsis thaliana

1999 ◽  
Vol 112 (3) ◽  
pp. 279-290 ◽  
Author(s):  
Akihiro Kubo ◽  
Mitsuko Aono ◽  
Nobuyoshi Nakajima ◽  
Hikaru Saji ◽  
Kiyoshi Tanaka ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Antioxidant Enzymes ◽  
Environmental Stresses ◽  
Differential Responses

scholarly journals Drought Rhizogenesis in Arabidopsis thaliana (Differential Responses of Hormonal Mutants)

1994 ◽  
Vol 104 (2) ◽  
pp. 761-767 ◽  
Author(s):  
N. Vartanian ◽  
L. Marcotte ◽  
J. Giraudat
Keyword(s):  
Arabidopsis Thaliana ◽  
Hormonal Mutants ◽  
Differential Responses

Activities of antioxidant enzymes of Arabidopsis thaliana plants during cold hardening to hypothermia

2016 ◽  
Vol 63 (6) ◽  
pp. 749-753 ◽  
Author(s):  
M. S. Sin’kevich ◽  
A. A. Selivanov ◽  
O. V. Antipina ◽  
E. V. Kropocheva ◽  
G. P. Alieva ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Antioxidant Enzymes ◽  
Cold Hardening

scholarly journals Parental environmental effects are common and strong, but unpredictable, in Arabidopsis thaliana

2021 ◽  
Author(s):  
Vit Latzel ◽  
Markus Fischer ◽  
Maartje Groot ◽  
Ruben Gutzat ◽  
Christian Lampei ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Environmental Effects ◽  
Plant Biomass ◽  
Environmental Stresses ◽  
Evolutionary Significance ◽  
Parental Effects ◽  
Negative Effects ◽  
Model Plant Arabidopsis Thaliana ◽  
Comprehensive Test ◽  
Plant Arabidopsis Thaliana

The phenotypes of plants can be influenced by the environmental conditions experienced by their parents. In some cases, such parental effects have been found to be adaptive, which has led to much speculation about their ecological and evolutionary significance. However, there is still much uncertainty about how common and how predictable parental environmental effects really are. We carried out a comprehensive test for parental effects of different environmental stresses in the model plant Arabidopsis thaliana. We subjected plants of three Arabidopsis genotypes to a broad range of biotic or abiotic stresses, or combinations thereof, and compared their offspring phenotypes in a common environment. The majority of environmental stresses (16 out of 24 stress treatments) caused significant parental effects, in particular on plant biomass and reproduction, with positive or negative effects ranging from 35% to +38% changes in offspring fitness. The expression of parental effects was strongly genotype-dependent, with some effects only present in some genotypes but absent, or even in the opposite direction, in others. Parental effects of multiple environmental stresses were often non-additive, and their effects can thus not be predicted from what we know about the effects of individual stresses. Intriguingly, the direction and magnitude of parental effects were unrelated to the direct effects on the parents: some stresses did not affect the parents but caused substantial effects on offspring, while for others the situation was reversed. In summary, parental environmental effects are common and often strong in A. thaliana, but they are genotype-dependent and difficult to predict.

scholarly journals CYSTM, a Novel Non-Secreted Cysteine-Rich Peptide Family, Involved in Environmental Stresses in Arabidopsis thaliana

2017 ◽  
Vol 59 (2) ◽  
pp. 423-438 ◽  
Author(s):  
Yang Xu ◽  
Zipeng Yu ◽  
Di Zhang ◽  
Jinguang Huang ◽  
Changai Wu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Environmental Stresses ◽  
Peptide Family

scholarly journals Effect of Anthelmintics on Antioxidant Enzymes in Arabidopsis Thaliana

2017 ◽  
Author(s):  
Radka Podlipná ◽  
Eliška Syslová ◽  
Markéta Hanulíková ◽  
Lucie Raisová Stuchlíková ◽  
Barbora Szotáková ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Antioxidant Enzymes

scholarly journals Influence of sodium chloride on the dehydroascorbate reductase activity in Arabidopsis thaliana catalase 2 knokout mutant

2018 ◽  
Vol 15 (2) ◽  
pp. 138-144
Author(s):  
I. M. Buzduga ◽  
R. A. Volkov ◽  
I. I. Panchuk
Keyword(s):  
Arabidopsis Thaliana ◽  
Antioxidant Enzymes ◽  
Salt Stress ◽  
Sodium Chloride ◽  
Reductase Activity ◽  
Dehydroascorbate Reductase ◽  
Knock Out ◽  
Stress Treatment ◽  
Response To Stress ◽  
Glutathione Cycle

Aim. To better understand the mechanisms of abiotic stress resistance in plants, it is important to clarify the role of individual antioxidant enzymes from the same multiproteinic family in the response to stress. It is known that the loss of some isoforms of antioxidant enzymes can be compensated by activation of other enzymes. However, the functional interaction of the ascorbate-glutathione cycle enzymes with catalase under salt stress still remains unexplored. Respectively, we determined the activity of DHAR in knock-out mutants of Arabidopsis thaliana under salt stress. Methods. The DHAR activity was determined in the knock-out line cat2 and in wild-type (WT) Arabidopsis plants after various regimes of treatment with sodium chloride. Results. After treatment with 200 mM sodium chloride in the dark, activation of DHAR was found after 8 hours in WT plants and after 4 hours in the knock-out line cat2. However stress treatment under illumination resulted in significant increase in DHAR activity after 8 hours in both studied lines. In this case, DHAR activity in cat2 was lower than in WT, whereas in non-treated plants or upon stress treatment in the dark no difference between the tested lines was detected. Conclusions. The obtained data indicate that under salt stress conditions, changes in the DHAR activity are included into functional rearrangements of the antioxidant system in cat2 line, which compensate the loss of activity of CAT2 isoenzyme.Keywords: dehydroascorbate reductase, antioxidants, reactive oxygen species (ROS), salt stress, Arabidopsis thaliana

scholarly journals Crystal structure of Arabidopsis thaliana peroxiredoxin A C119S mutant

2018 ◽  
Vol 74 (10) ◽  
pp. 625-631 ◽  
Author(s):  
Ye Yang ◽  
Wenguang Cai ◽  
Junchao Wang ◽  
Weimin Pan ◽  
Lin Liu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Arabidopsis Thaliana ◽  
Antioxidant Enzymes ◽  
Conformational Changes ◽  
Large Family ◽  
Living Organisms ◽  
Reduced State

Peroxiredoxins (Prxs), a large family of antioxidant enzymes, are abundant in all living organisms. Peroxiredoxin A (PrxA) from Arabidopsis thaliana belongs to the typical 2-Cys Prx family and is localized in the chloroplast. This article reports the crystal structure of a PrxA C119S mutant refined to 2.6 Å resolution. The protein exists as a decamer both in the crystal structure and in solution. The structure is in the reduced state suitable for the approach of peroxide, though conformational changes are needed for the resolving process.

Sign in / Sign up

Export Citation Format

Share Document