Air-Pollutant-Philic Plants for Air Remediation

Takahashi, Misa; Morikawa, Hiromichi

doi:10.4236/jep.2012.310153

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…We found a higher than 600-fold difference in the assimilation ability of NO 2 among 217 plant taxa [20]. We investigated hypothetical air-pollutant-philic plants [23,24] that utilize NO 2 as the sole nitrogen source. During our research, we discovered that atmospheric NO 2 at concentrations as low as 10−50 ppb positively regulates plant growth [25,26,27,28,29,30,31,32].…”

Section: Nitrogen Dioxide At Ambient Concentrations Of 10–50 Ppb Amentioning

confidence: 99%

Nitrogen Dioxide at Ambient Concentrations Induces Nitration and Degradation of PYR/PYL/RCAR Receptors to Stimulate Plant Growth: A Hypothetical Model

Takahashi

Morikawa

2019

Plants

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Exposing Arabidopsis thaliana (Arabidopsis) seedlings fed with soil nitrogen to 10–50 ppb nitrogen dioxide (NO2) for several weeks stimulated the uptake of major elements, photosynthesis, and cellular metabolisms to more than double the biomass of shoot, total leaf area and contents of N, C P, K, S, Ca and Mg per shoot relative to non-exposed control seedlings. The 15N/14N ratio analysis by mass spectrometry revealed that N derived from NO2 (NO2-N) comprised < 5% of the total plant N, showing that the contribution of NO2-N as N source was minor. Moreover, histological analysis showed that leaf size and biomass were increased upon NO2 treatment, and that these increases were attributable to leaf age-dependent enhancement of cell proliferation and enlargement. Thus, NO2 may act as a plant growth signal rather than an N source. Exposure of Arabidopsis leaves to 40 ppm NO2 induced virtually exclusive nitration of PsbO and PsbP proteins (a high concentration of NO2 was used). The PMF analysis identified the ninth tyrosine residue of PsbO1 (9Tyr) as a nitration site. 9Tyr of PsbO1 was exclusively nitrated after incubation of the thylakoid membranes with a buffer containing NO2 and NO2− or a buffer containing NO2− alone. Nitration was catalyzed by illumination and repressed by photosystem II (PSII) electron transport inhibitors, and decreased oxygen evolution. Thus, protein tyrosine nitration altered (downregulated) the physiological function of cellular proteins of Arabidopsis leaves. This indicates that NO2-induced protein tyrosine nitration may stimulate plant growth. We hypothesized that atmospheric NO2 at ambient concentrations may induce tyrosine nitration of PYR/PYL/RCAR receptors in Arabidopsis leaves, followed by degradation of PYR/PYL/RCAR, upregulation of target of rapamycin (TOR) regulatory complexes, and stimulation of plant growth.

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Section: Nitrogen Dioxide At Ambient Concentrations Of 10–50 Ppb Amentioning

confidence: 99%

Nitrogen Dioxide at Ambient Concentrations Induces Nitration and Degradation of PYR/PYL/RCAR Receptors to Stimulate Plant Growth: A Hypothetical Model

Takahashi

Morikawa

2019

Plants

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Magnolia kobus DC.’ nin yeşil çelikle üretiminde farklı hormon uygulamalarının etkileri

Pulatkan

Şahin

2022

Ormancılık Araştırma Dergisi

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Magnolia kobus native to Japan is a small tree-shaped plant from the Magnoliaceae family, which sheds its leaves in winter, about 10 m tall and has a round form. It is one of the plants preferred in Landscape Architecture planting designs with its form, aromatic leaves, abundantly blooming pinkish-white flowers and fruit beauty. It is very effective in groups or solitary use. It is resistant to urban climate and cold. In this study, our aim is to encourage the use of this plant, which is valuable with its aesthetic properties, by propagation with cutting production in the urban landscape. Within the scope of the study, the production technique with mild cutting, which is one of the vegetative production techniques, was used. In this current study, the effect of different hormone applications on the rooting success of softwood cuttings of Magnolia kobus was investigated. 0 (control), 3000, 5000 and 8000 ppm doses of hormones IBA (Indol-3-butyric acid), IAA (Indole-3-acetic acid) and NAA (Naphthalene acetic acid) were applied to the cuttings. Cuttings were planted in perlite medium under greenhouse conditions (20±2 ºC air temperature, 25±2 ºC rooting table lower temperature, 70±2% humidity). After about 4 months, the cuttings were removed and the rooting rate (%) and root lengths (cm) were determined. As a result of the study, the highest rooting percentage (60%) was seen in cuttings treated with 8000 ppm dose of IBA hormone. The highest root length values in cuttings were determined in cuttings treated with IAA 3000 ppm and 5000 ppm doses. According to the results of analysis of variance, it was determined that hormone applications had a significant effect on rooting (P: 0.000 ˂ 0.05). This study was supported by Karadeniz Technical University Scientific Research Projects Unit (Project no: 9733).

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Urban Air Pollution and Plant Tolerance: Omics Responses to Ozone, Nitrogen Oxides, and Particulate Matter

Antenozio,

Caissutti,

Caporusso

et al. 2024

Plants

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Urban air pollution is a crucial global challenge, mainly originating from urbanization and industrial activities, which are continuously increasing. Vegetation serves as a natural air filter for air pollution, but adverse effects on plant health, photosynthesis, and metabolism can occur. Recent omics technologies have revolutionized the study of molecular plant responses to air pollution, overcoming previous limitations. This review synthesizes the latest advancements in molecular plant responses to major air pollutants, emphasizing ozone (O3), nitrogen oxides (NOX), and particulate matter (PM) research. These pollutants induce stress responses common to other abiotic and biotic stresses, including the activation of reactive oxygen species (ROSs)-scavenging enzymes and hormone signaling pathways. New evidence has shown the central role of antioxidant phenolic compound biosynthesis, via the phenylpropanoid pathway, in air pollution stress responses. Transcription factors like WRKY, AP2/ERF, and MYB, which connect hormone signaling to antioxidant biosynthesis, were also affected. To date, research has predominantly focused on laboratory studies analyzing individual pollutants. This review highlights the need for comprehensive field studies and the identification of molecular tolerance traits, which are crucial for the identification of tolerant plant species, aimed at the development of sustainable nature-based solutions (NBSs) to mitigate urban air pollution.

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Air-Pollutant-Philic Plants for Air Remediation

Cited by 3 publications

References 28 publications

Nitrogen Dioxide at Ambient Concentrations Induces Nitration and Degradation of PYR/PYL/RCAR Receptors to Stimulate Plant Growth: A Hypothetical Model

Nitrogen Dioxide at Ambient Concentrations Induces Nitration and Degradation of PYR/PYL/RCAR Receptors to Stimulate Plant Growth: A Hypothetical Model

Magnolia kobus DC.’ nin yeşil çelikle üretiminde farklı hormon uygulamalarının etkileri

Urban Air Pollution and Plant Tolerance: Omics Responses to Ozone, Nitrogen Oxides, and Particulate Matter

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