Editorial: Plant Programmed Cell Death Revisited

Kacprzyk, Joanna; Gunawardena, Arunika H. L. A. N.; Bouteau, François; McCabe, Paul F.

doi:10.3389/fpls.2021.672465

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Reliable marker of apoptosis-like PCD is the DNA degradation into nucleosomal units («DNA ladder»), since it indicates that PCD process is already at the irreversible stage [10]. At the final stage of PCD further hydrolysis of genomic DNA occurs (DNA fragmentation), which «strikes the last blow» to a cell.…”

Section: Resultsmentioning

confidence: 99%

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DNA fragmentation and endonuclease activity under the effect of herbicides acetyl-CoA-carboxylase and acetolactat synthase inhibitors

Radchenko¹,

Gurianov²,

Morderer³

2022

Fiziol.rast. genet.

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The aim of this study was to test the hypothesis that pathogenesis induced in sensitive plants by ALS-and ACC-inhibiting herbicides is an active process which involves programmed cell death (PCD). A reliable marker of PCD is DNA fragmentation, which is carried out by endogenous nucleases. The root meristems from herbicide-sensitive plants were analyzed by the TUNEL assay to estimate DNA fragmentation. It was shown that the highest level of DNA fragmentation in root meristem cells under pathogenesis, induced on maize seedlings by the action of ACC-inhibiting herbicide propaquizafop, and on pea seedlings by the action of ALS-inhibiting herbicide tribenuron-methyl, was associated with increased total nuclease activity in root meristem lysates comparing to the corresponding control. In response to tribenuron-methyl application, the level of total nuclease activity elevated due to high activity of both Zn 2+ -dependent («acidic») and Ca 2+ /Mg 2+dependent («alkaline») nucleases, while in a case of propaquizafop, the increased activity was detected only for Zn 2+ -dependent nucleases. These differences may be due to different mechanisms of PCD initiation, depending on the mode of herbicides action. The facts, that TUNEL method recorded DNA fragmentation in plant cells induced by ACC-and ALS-inhibiting herbicides, and this fragmentation is associated with an increased activity of endogenous nucleases, represent evidence for PCD, that occurs during pathogenesis. The significance of data obtained is that they emphasize the fact that herbicide-induced pathogenesis is a complex, multi-stage, active process. The discovery of pathogenesis distinct stages mechanisms nature opens up new possibilities for regulating the herbicides selective phytotoxicity by physiologically active substances and genetically engineered manipulations.

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Section: Resultsmentioning

confidence: 99%

“…Cell destruction can manifest as apoptotic-like, necrotic or autophagic cell death, and these processes are likely to overlap extensively, sharing several regulatory mechanisms [10]. But until recently, the term PCD was used to describe the processes of apoptosis and autophagy, while necrosis was described as a chaotic and uncontrolled mode of death [11].…”

mentioning

confidence: 99%

DNA fragmentation and endonuclease activity under the effect of herbicides acetyl-CoA-carboxylase and acetolactat synthase inhibitors

Radchenko¹,

Gurianov²,

Morderer³

2022

Fiziol.rast. genet.

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Symbiosis between cyanobacteria and plants: from molecular studies to agronomic applications

Álvarez,

Jiménez-Ríos,

Iniesta-Pallarés

et al. 2023

Journal of Experimental Botany

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Nitrogen-fixing cyanobacteria from the order Nostocales are able to establish symbiotic relationships with diverse plant species. They are promiscuous symbionts as the same strain of cyanobacterium is able to form symbiotic biological nitrogen fixing (BNF) relationships with different plants species. This review will focus on the different types of cyanobacterial-plant associations, both endophytic and epiphytic, and provide insights from a structural viewpoint, as well as our current understanding of the mechanisms involved in the symbiotic crosstalk. In all these symbioses, the benefit for the plant is clear; they obtain from the cyanobacterium, fixed-nitrogen and other bioactive compounds, such as phytohormones, polysaccharides, siderophores or vitamins, leading to enhanced plant growth and productivity. Additionally, there is increasing use of different cyanobacterial species as bio-inoculants for BNF to improve soil fertility and crop production, thus providing an eco-friendly, alternative, and sustainable approach to reduce the over-reliance on synthetic chemical fertilizers.

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Filling in the gaps: a road map to establish a model system to study developmental programmed cell death

Rowarth

Tattrie

Dauphinee

et al. 2023

Botany

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Only a handful of model systems for studying programmed cell death (PCD) exist. The model Arabidopsis thaliana has generated a plethora of knowledge, but it is essential to introduce new models to broaden our understanding of the commonalities of PCD. This review focuses on Aponogeton madagascariensis (the lace plant) as a choice model to study PCD in vivo. PCD plays a key role in plant development and defence. Thus, identifying key regulators across plants is a priority in the field. The formation of perforations in lace plant leaves in areas called areoles is a striking example of PCD. Cells undergoing PCD within areoles can be easily identified from a loss of their anthocyanin pigmentation. In contrast, cells adjacent to veins, non-PCD cells, retain anthocyanins, creating a gradient of cell death. The spatiotemporal pattern of perforation formation, a gradient of cell death within areoles, and the availability of axenic cultures provide an excellent in vivo system to study mechanisms of developmental PCD. The priorities to further develop this model involve sequencing the genome, establishing transformation protocols, and identifying anthocyanin species to determine their medicinal properties. We discuss practical methodologies and challenges associated with developing the lace plant as a model to study PCD.

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Editorial: Plant Programmed Cell Death Revisited

Cited by 4 publications

References 9 publications

DNA fragmentation and endonuclease activity under the effect of herbicides acetyl-CoA-carboxylase and acetolactat synthase inhibitors

DNA fragmentation and endonuclease activity under the effect of herbicides acetyl-CoA-carboxylase and acetolactat synthase inhibitors

Symbiosis between cyanobacteria and plants: from molecular studies to agronomic applications

Filling in the gaps: a road map to establish a model system to study developmental programmed cell death

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