scholarly journals Abiotic Stress-Induced Programmed Cell Death in Plants: A Phytaspase Connection

10.5772/23785 ◽  
2011 ◽  
Author(s):  
Alexander I. ◽  
Boris B. Vartapetian Andrey B. Vartapetian ◽  
Nina V.
Keyword(s):  
Cell Death ◽  
Abiotic Stress ◽  
Programmed Cell Death

Abiotic stress–induced programmed cell death in plants

2020 ◽  
pp. 1-24
Author(s):  
Fatma Yanık ◽  
Aslıhan Çetinbaş-Genç ◽  
Filiz Vardar
Keyword(s):  
Cell Death ◽  
Abiotic Stress ◽  
Programmed Cell Death

scholarly journals Insights into Plant Programmed Cell Death Induced by Heavy Metals—Discovering a Terra Incognita

Cells ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 65
Author(s):  
Klaudia Sychta ◽  
Aneta Słomka ◽  
Elżbieta Kuta
Keyword(s):  
Heavy Metals ◽  
Cell Death ◽  
Abiotic Stress ◽  
Programmed Cell Death ◽  
Abiotic Factors ◽  
Genetic Regulation ◽  
Stress Factors ◽  
Suitable Model ◽  
Abiotic Stress Factors ◽  
Terra Incognita

Programmed cell death (PCD) is a process that plays a fundamental role in plant development and responses to biotic and abiotic stresses. Knowledge of plant PCD mechanisms is still very scarce and is incomparable to the large number of studies on PCD mechanisms in animals. Quick and accurate assays, e.g., the TUNEL assay, comet assay, and analysis of caspase-like enzyme activity, enable the differentiation of PCD from necrosis. Two main types of plant PCD, developmental (dPCD) regulated by internal factors, and environmental (ePCD) induced by external stimuli, are distinguished based on the differences in the expression of the conserved PCD-inducing genes. Abiotic stress factors, including heavy metals, induce necrosis or ePCD. Heavy metals induce PCD by triggering oxidative stress via reactive oxygen species (ROS) overproduction. ROS that are mainly produced by mitochondria modulate phytotoxicity mechanisms induced by heavy metals. Complex crosstalk between ROS, hormones (ethylene), nitric oxide (NO), and calcium ions evokes PCD, with proteases with caspase-like activity executing PCD in plant cells exposed to heavy metals. This pathway leads to very similar cytological hallmarks of heavy metal induced PCD to PCD induced by other abiotic factors. The forms, hallmarks, mechanisms, and genetic regulation of plant ePCD induced by abiotic stress are reviewed here in detail, with an emphasis on plant cell culture as a suitable model for PCD studies. The similarities and differences between plant and animal PCD are also discussed.

scholarly journals ROS-mediated abiotic stress-induced programmed cell death in plants

2015 ◽  
Vol 6 ◽  
Author(s):  
Veselin Petrov ◽  
Jacques Hille ◽  
Bernd Mueller-Roeber ◽  
Tsanko S. Gechev
Keyword(s):  
Cell Death ◽  
Abiotic Stress ◽  
Programmed Cell Death

scholarly journals Programmed Cell Death (PCD) in Plant: Molecular Mechanism, Regulation, and Cellular Dysfunction in Response to Development and Stress

2021 ◽  
Author(s):  
Raju Mondal ◽  
Sreya Antony ◽  
Sovan Roy ◽  
Sanjib Kumar Chattopadhyay
Keyword(s):  
Cell Death ◽  
Abiotic Stress ◽  
Life Cycle ◽  
Programmed Cell Death ◽  
Growth And Development ◽  
Abiotic And Biotic Stress ◽  
Wide Range ◽  
Plant Life Cycle ◽  
Abiotic Stimuli ◽  
Cellular Dysfunction

Programmed cell death (PCD) or apoptosis is a genetically programmed cellular process. Though in the plant, a true caspase system is lacking, still PCD can occur throughout the life cycle at any cell type, tissue, and organ part in response to a wide range of stimuli. Here we have discussed the current understanding of plant PCD in terms of different pathways, cellular dysfunction, regulation, and signaling mechanisms. Our present study discussed how and to what extent PCD is involved in pre-zygotic and post-zygotic plant life cycle and emphasized to what extent PCD modulated in response to abiotic and biotic stress. Additionally, the expression profile of different PCD-associated genes that are modulated by developmental stage, biotic-abiotic stress, cellular metabolites are also elucidated. Hence, this study will be helpful for understanding the molecular and structural instincts of PCD in different stages of plant growth and development, response to biotic/abiotic stimuli, and cellular dysfunction.

Programmed Cell Death Ligand 1 and Venous Thromboembolism in Patients with Primary Brain Tumors

2019 ◽  
Author(s):  
P. Seyed Mir ◽  
A.-S. Berghoff ◽  
M. Preusser ◽  
G. Ricken ◽  
J. Riedl ◽  
...  
Keyword(s):  
Cell Death ◽  
Venous Thromboembolism ◽  
Programmed Cell Death ◽  
Brain Tumors ◽  
Primary Brain Tumors
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