Exogenous Abscisic Acid Modulates Reactive Oxygen Metabolism and Related Gene Expression in Platycladus orientalis under H2O2-Induced Stress

Yao, Xiamei; Ji, Jun; Yue, Jianyun; Shi, Shengqing; Chun, Ou; Jiang, Zeping; Chang, Ermei

doi:10.1134/s1021443720010264

Cited by 13 publications

(6 citation statements)

References 26 publications

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“…Likewise, 30 μM exogenous ABA applied to wheat plants increased endogenous ABA and SOD, CAT, and POD activities and improved drought tolerance ( Bousba et al, 2020 ). In Chinese arborvitae ( Platycladus orientalis ) seedlings, exogenous ABA (0.5, 1, 10, 100, and 200 μM) significantly mitigated oxidative stress by modulating ROS metabolism, increasing SOD, POD, and CAT activities (by 69%, 91%, and 94%, respectively), AsA, total GSH, and proline contents, and decreasing H 2 O 2 and MDA contents under H 2 O 2 stress ( Yao et al, 2020 ). According to their results, the 1 μM L −1 ABA treatment had the greatest increase in transcript levels of antioxidant enzyme-encoding genes such as Cu/Zn-SOD , CAT , GR , APX , and MDAR under H 2 O 2 -induced stress.…”

Section: Interplay Of Plant Hormones In Conferring Abiotic-induced Ox...mentioning

confidence: 99%

“…In the past two decades, ABA has been documented as a vital messenger in the adaptive response to abiotic stresses, and its role in stress resistance has gained much consideration. Endogenous ABA levels rise quickly in response to abiotic stress, triggering specific signaling pathways and altering gene expression levels (Trivedi et al, 2016;Yao et al, 2020;Golfazani et al, 2022). Several studies have investigated ABA's antioxidant potential in plants subject to stressful environments (Table 1).…”

Section: Abscisic Acidmentioning

confidence: 99%

“…Exogenous application or/and genes responsible for the biosynthesis of plant hormones or phytohormones, such as abscisic acid (ABA), jasmonic acid (JA), salicylic acid (SA), brassinosteroids (BRs), indole-3-acetic acid (IAA), cytokinins (CKs), ethylene (ET), gibberellic acid (GA), and strigolactones (SLs), could be used to develop climate-resilient crops with improved yields under stressful conditions ( Figure 1 ; Cooper et al, 2018 ; Ku et al, 2018 ; Raza et al, 2019b ; Yao et al, 2020 ; Mubarik et al, 2021 ; Sabagh et al, 2021 ; Waadt et al, 2022 ). As plant growth regulators, plant hormones are produced in minimal amounts but can regulate diverse plant cellular processes.…”

Section: Introductionmentioning

confidence: 99%

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Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

et al. 2022

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Due to global climate change, abiotic stresses are affecting plant growth, productivity, and the quality of cultivated crops. Stressful conditions disrupt physiological activities and suppress defensive mechanisms, resulting in stress-sensitive plants. Consequently, plants implement various endogenous strategies, including plant hormone biosynthesis (e.g., abscisic acid, jasmonic acid, salicylic acid, brassinosteroids, indole-3-acetic acid, cytokinins, ethylene, gibberellic acid, and strigolactones) to withstand stress conditions. Combined or single abiotic stress disrupts the normal transportation of solutes, causes electron leakage, and triggers reactive oxygen species (ROS) production, creating oxidative stress in plants. Several enzymatic and non-enzymatic defense systems marshal a plant’s antioxidant defenses. While stress responses and the protective role of the antioxidant defense system have been well-documented in recent investigations, the interrelationships among plant hormones, plant neurotransmitters (NTs, such as serotonin, melatonin, dopamine, acetylcholine, and γ-aminobutyric acid), and antioxidant defenses are not well explained. Thus, this review discusses recent advances in plant hormones, transgenic and metabolic developments, and the potential interaction of plant hormones with NTs in plant stress response and tolerance mechanisms. Furthermore, we discuss current challenges and future directions (transgenic breeding and genome editing) for metabolic improvement in plants using modern molecular tools. The interaction of plant hormones and NTs involved in regulating antioxidant defense systems, molecular hormone networks, and abiotic-induced oxidative stress tolerance in plants are also discussed.

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Section: Interplay Of Plant Hormones In Conferring Abiotic-induced Ox...mentioning

confidence: 99%

Section: Abscisic Acidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

et al. 2022

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“…These results indicate that ABA improved the resistance of N. o cinale to Cd-contaminated condition. The reason is that ABA is a stress hormone involved in regulating plant antioxidant enzyme activity [21], and ABA can up-regulate the ROS-related genes, increase the glutathione content, and decrease the contents of H 2 O 2 and malondialdehyde (MDA) to increase the resistance of plants to stress conditions [55].…”

Section: Discussionmentioning

confidence: 99%

Abscisic acid improves the phytoremediation ability of the aquatic accumulator plant Nasturtium officinale R. Br. in cadmium-contaminated soil

Peng,

Xiao,

Tang

et al. 2024

Preprint

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Previous studies report significant contamination of farmland soil by cadmium (Cd). Cadmium contamination increases the risk of diseases after consumption of grain crops with high Cd levels. Hyperaccumulators or accumulators have been widely used to bioremediate Cd-contaminated farmland soil. Studies report that aquatic hyperaccumulators or accumulators are rarely used in phytoremediation, or their phytoremediation efficiencies are low. A pot experiment was carried out to explore the effects of abscisic acid (ABA) on the cadmium (Cd) accumulation (phytoremediation) of emerged aquatic accumulator plant Nasturtium officinale R. Br. ABA application increased the shoot biomass, peroxidase (POD) activity, superoxide dismutase (SOD) activity, catalase (CAT) activity, and soluble protein content of N. officinale under Cd-contamination condition. The application of ABA at 5, 10, and 20 µmol/L increased the chlorophyll and carotenoid contents in N. officinale. The application of ABA also increased the shoot Cd content and shoot Cd extraction of N. officinale. The application of ABA at 1, 5, 10, and 20 µmol/L increased the shoot Cd extraction by 11.65, 25.27, 37.91, and 58.52%, respectively, compared with the control. In addition, ABA concentration had a linear regression relationship with the root biomass, shoot biomass, root Cd extraction, and shoot Cd extraction. Correlation, grey relational, and path analyses showed that the root biomass, shoot biomass, root Cd extraction, root Cd content, POD activity, SOD activity, and soluble protein content were significantly associated with the shoot Cd extraction. These findings indicate that ABA application can improve the phytoremediation ability of N. officinale under Cd-contaminated flooded fields.

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“…The effects of ABA on the induction of antioxidant responses in Pyropia orbicularis and other intertidal seaweed species have been evaluated and the results showed that ABA regulated the activation of antioxidant enzymes activities during desiccation ( Guajardo et al, 2016 ). Additionally, ABA can significantly increase GR activity in Platycladus orientalis ( Yao et al, 2020 ). Similar results were obtained in this study.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of Abscisic Acid in Neopyropia yezoensis and Its Regulation of Antioxidase Genes Expressions Under Hypersaline Stress

Yang

Feng

et al. 2022

Front. Microbiol.

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Abscisic acid (ABA) is regarded as crucial for plant adaptation to water-limited conditions and it functions evolutionarily conserved. Thus, insights into the synthesis of ABA and its regulation on downstream stress-responsive genes in Neopyropia yezoensis, a typical Archaeplastida distributed in intertidal zone, will improve the knowledge about how ABA signaling evolved in plants. Here, the variations in ABA contents, antioxidant enzyme activities and expression of the target genes were determined under the presence of exogenous ABA and two specific inhibitors of the ABA precursor synthesis. ABA content was down-regulated under the treatments of each or the combination of the two inhibitors. Antioxidant enzyme activities like SOD, CAT and APX were decreased slightly with inhibitors, but up-regulated when the addition of exogenous ABA. The quantitative assays using real-time PCR (qRT-PCR) results were consistent with the enzyme activities. All the results suggested that ABA can also alleviate oxidative stress in N. yezoensis as it in terrestrial plant. Combined with the transcriptome assay, it was hypothesized that ABA is synthesized in N. yezoensis via a pathway that is similar to the carotenoid pathway in higher plants, and both the MVA and that the MEP pathways for isoprenyl pyrophosphate (IPP) synthesis likely exist simultaneously. The ABA signaling pathway in N. yezoensis was also analyzed from an evolutionary standpoint and it was illustrated that the emergence of the ABA signaling pathway in this alga is an ancestral one. In addition, the presence of the ABRE motif in the promoter region of antioxidase genes suggested that the antioxidase system is regulated by the ABA signaling pathway.

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Exogenous Abscisic Acid Modulates Reactive Oxygen Metabolism and Related Gene Expression in Platycladus orientalis under H2O2-Induced Stress

Cited by 13 publications

References 26 publications

Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

Plant hormones and neurotransmitter interactions mediate antioxidant defenses under induced oxidative stress in plants

Abscisic acid improves the phytoremediation ability of the aquatic accumulator plant Nasturtium officinale R. Br. in cadmium-contaminated soil

Synthesis of Abscisic Acid in Neopyropia yezoensis and Its Regulation of Antioxidase Genes Expressions Under Hypersaline Stress

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