Kinematic evidence that atmospheric nitrogen dioxide increases the rates of cell proliferation and enlargement to stimulate leaf expansion in Arabidopsis

Takahashi, Misa; Morikawa, Hiromichi

doi:10.1080/15592324.2015.1022011

Cited by 2 publications

(3 citation statements)

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“…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%

“…NO 2 concentration effect on the yield of shoot biomass in 4-week-old plants was first determined. Shoot biomass of +NO 2 -treated C24 plants under 10 ± 0.2 and 50 ± 0.3 ppb NO 2 was 3.2-fold [29] and 2.5-fold greater relative to the –NO 2 control plants. Treatments of 100 ± 20 and 200 ± 50 ppb NO 2 produced no stimulation of growth, or somewhat repressed the growth of plants.…”

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

confidence: 99%

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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%

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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“…When NO 2 concentrations are higher than the annual average NO 2 concentration limit of 53 ppb in the United States [8], NO 2 can damage the leaves of plants, causing chlorosis in angiosperms, needle burns in conifers [9,10], reduced leaf area [11], and lower stem weights [12]. However, when the concentration of NO 2 is lower than the average annual NO 2 concentration of 53 ppb in the United States, the total leaf area, nutrient intake, and aboveground biomass were more than doubled [13,14]. Similar results have been found in different plant species, including Arabidopsis thaliana [15,16], tobacco (Nicotiana plumbaginifolia L.) [17], and crops such as lettuce (Lactuca sativa L.), sunflower (Helianthus annuus L.), cucumber (Cucumis sativus L.), and squash (Cucurbita moschata L.) [9].…”

mentioning

confidence: 99%

Atmospheric Nitrogen Dioxide Improves Photosynthesis in Mulberry Leaves via Effective Utilization of Excess Absorbed Light Energy

Wang

Jin

Che

et al. 2019

Forests

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Nitrogen dioxide (NO 2 ) is recognized as a toxic gaseous air pollutant. However, atmospheric NO 2 can be absorbed by plant leaves and subsequently participate in plant nitrogen metabolism. The metabolism of atmospheric NO 2 utilizes and consumes the light energy that leaves absorb. As such, it remains unclear whether the consumption of photosynthetic energy through nitrogen metabolism can decrease the photosynthetic capacity of plant leaves or not. In this study, we fumigated mulberry (Morus alba L.) plants with 4 µL·L −1 NO 2 and analyzed the distribution of light energy absorbed by plants in NO 2 metabolism using gas exchange and chlorophyll a fluorescence technology, as well as biochemical methods. NO 2 fumigation enhanced the nitrogen metabolism of mulberry leaves, improved the photorespiration rate, and consumed excess light energy to protect the photosynthetic apparatus. Additionally, the excess light energy absorbed by the photosystem II reaction center in leaves of mulberry was dissipated in the form of heat dissipation. Thus, light energy was absorbed more efficiently in photosynthetic carbon assimilation in mulberry plants fumigated with 4 µL·L −1 NO 2 , which in turn increased the photosynthetic efficiency of mulberry leaves. chemical reactions, trapping near-surface NO 2 , leading to NO 2 concentrations that are more than three times higher than that found in sunny weather. This increase in aerosol mass concentration leads to an increase in water content, accelerating the accumulation of sulfate and causing severe haze. In addition, NO 2 is also a respiratory system irritant. After being inhaled, NO 2 first affects the respiratory organs, the lungs in particular. The combination of nitrite and nitric acid that occurs when NO 2 encounters mucus membranes is a strong irritant with corrosive effects [7].NO 2 affects the normal growth of plants. When NO 2 concentrations are higher than the annual average NO 2 concentration limit of 53 ppb in the United States [8], NO 2 can damage the leaves of plants, causing chlorosis in angiosperms, needle burns in conifers [9,10], reduced leaf area [11], and lower stem weights [12]. However, when the concentration of NO 2 is lower than the average annual NO 2 concentration of 53 ppb in the United States, the total leaf area, nutrient intake, and aboveground biomass were more than doubled [13,14]. Similar results have been found in different plant species, including Arabidopsis thaliana [15,16], tobacco (Nicotiana plumbaginifolia L.) [17], and crops such as lettuce (Lactuca sativa L.), sunflower (Helianthus annuus L.), cucumber (Cucumis sativus L.), and squash (Cucurbita moschata L.) [9]. In addition, atmospheric NO 2 can shorten flowering periods in tomato (Solanum lycopersicum L. 'Micro-Tom'), increasing the number of flowers and the yield of the fruit [18].In China, the concentration of NO 2 emission, which caused formation of fine particulate matter (PM2.5), is not enough to injure tree plants. As a result, trees have been used to absorb atmospheric nitrogen dioxid...

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Kinematic evidence that atmospheric nitrogen dioxide increases the rates of cell proliferation and enlargement to stimulate leaf expansion in Arabidopsis

Cited by 2 publications

References 14 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

Atmospheric Nitrogen Dioxide Improves Photosynthesis in Mulberry Leaves via Effective Utilization of Excess Absorbed Light Energy

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