Nitric Oxide in Plant Functioning: Metabolism, Signaling, and Responses to Infestation with Ecdysozoa Parasites

Graska, Jakub; Fidler, Justyna; Gietler, Marta; Prabucka, Beata; Nykiel, Małgorzata; Labudda, Mateusz

doi:10.3390/biology12070927

Cited by 3 publications

(1 citation statement)

References 260 publications

(366 reference statements)

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“…Cd also enhances ROS production by activating stress-specific oxidases in the cytoplasm and mitochondria (the latter being usually quiescent in this respect in unstressed tissues) [3]. ROS, together with reactive nitrogen species (RNS) including nitric oxide (NO), is the main cause of oxidative alterations in the structure of cellular components [4]. Under normal, nonstressful conditions, the majority of ROS are scavenged by the antioxidant system, while a small portion is utilized for signaling and modifications of macromolecules [5].…”

Section: Introductionmentioning

confidence: 99%

Response to Cadmium in Silene vulgaris Ecotypes Is Distinctly Affected by Priming-Induced Changes in Oxidation Status of Macromolecules

Wiszniewska,

Labudda,

Muszyńska

2023

IJMS

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This study investigated the impact of several priming agents on metal-tolerant and sensitive Silene vulgaris ecotypes exposed to environmentally relevant cadmium dose. We analyzed how priming-induced changes in the level of lipid, protein, and DNA oxidation contribute to calamine (Cal) and non-calamine (N-Cal) ecotype response to Cd toxicity, and whether the oxidative modifications interrelate with Cd tolerance. In non-primed ecotypes, the levels of DNA and protein oxidation were similar whereas Cal Cd tolerance was manifested in reduced lipid peroxidation. In both ecotypes protective action of salicylic acid (SA) and nitric oxide (NO) priming was observed. SA stimulated growth and reduced lipid and DNA oxidation at most, while NO protected DNA from fragmentation. Priming with hydrogen peroxide reduced biomass and induced DNA oxidation. In N-Cal, priming diminished Cd accumulation and oxidative activity, whereas in Cal, it merely affected Cd uptake and induced protein carbonylation. The study showed that priming did not stimulate extra stress resistance in the tolerant ecotype but induced metabolic remodeling. In turn, the lack of adaptive tolerance made the sensitive ecotype more responsive to the benefits of the primed state. These findings could facilitate priming exploitation with a view of enhancing metallophyte and non-metallophyte suitability for phytoremediation and land revegetation.

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Section: Introductionmentioning

confidence: 99%

Response to Cadmium in Silene vulgaris Ecotypes Is Distinctly Affected by Priming-Induced Changes in Oxidation Status of Macromolecules

Wiszniewska,

Labudda,

Muszyńska

2023

IJMS

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The emerging roles of nitric oxide and its associated scavengers—phytoglobins—in plant symbiotic interactions

Pathak,

Yadav,

Kaladhar

et al. 2023

Journal of Experimental Botany

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A key feature in the establishment of symbiosis between plants and microbes is the maintenance of the balance between the production of the small redox-related molecule, nitric oxide (NO) and its cognate scavenging pathways. During the establishment of symbiosis, a transition from a normoxic to a microoxic environment often takes place triggering the production of NO from nitrite via a reductive production pathway. Plant hemoglobins (phytoglobins) are a central tenant of NO scavenging, with NO homeostasis maintained via the phytoglobin-NO cycle. While the first plant hemoglobin (leghemoglobin), associated with the symbiotic relationship between leguminous plants and bacterial Rhizobium species, was discovered in 1939, most other plant hemoglobins, identified only in the 1990s, were considered as non-symbiotic. From recent studies, it is becoming evident that the role of Phytogbs1 in the establishment and maintenance of plant-bacterial and plant-fungal symbiosis is also essential in roots. Consequently, the division of plant hemoglobins into symbiotic and non-symbiotic groups becomes less justified. While the main function of Phytogbs1 is related to the regulation of NO levels, participation of these proteins in the establishment of symbiotic relationships between plants and microorganisms represents another important dimension among the other processes in which these key redox-regulatory proteins play a central role.

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From Signaling to Stress: How Does Plant Redox Homeostasis Behave under Phytophagous Mite Infestation?

Wurlitzer,

Labudda,

Silveira

et al. 2024

IJPB

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Plants are directly exposed to several biotic factors. Among these, mite species belonging to the superfamilies Eriophyoidea and Tetranychoidea stand out due to their ability to injure or even transmit viruses to their host plants. In response to infestations by these organisms, reactive oxygen species (ROS), regulated by enzymatic and non-enzymatic antioxidants (homeostasis), can act as signaling molecules to induce defenses or even acclimatization in attacked plants. However, depending on the severity of the stress, there can be an imbalance between ROS and antioxidants that can result in oxidative stress, leading to membrane damage by lipid peroxidation, organelle inactivation, and even cell death. In this review, we outline for the first time the current state of understanding regarding the role of cellular processes in ROS metabolism, such as signaling, the potential damage induced by ROS, and the defense role of enzymatic antioxidant systems involved in the plant–mite relationship. Furthermore, we identify several gaps between redox metabolism and plant defense against phytophagous mites.

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Nitric Oxide in Plant Functioning: Metabolism, Signaling, and Responses to Infestation with Ecdysozoa Parasites

Cited by 3 publications

References 260 publications

Response to Cadmium in Silene vulgaris Ecotypes Is Distinctly Affected by Priming-Induced Changes in Oxidation Status of Macromolecules

Response to Cadmium in Silene vulgaris Ecotypes Is Distinctly Affected by Priming-Induced Changes in Oxidation Status of Macromolecules

The emerging roles of nitric oxide and its associated scavengers—phytoglobins—in plant symbiotic interactions

From Signaling to Stress: How Does Plant Redox Homeostasis Behave under Phytophagous Mite Infestation?

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