Effects of nitrogen fertilization on the growth and on photochemical efficiency in plants of <i>Handroanthus heptaphyllus</i>

Berghetti, Álvaro Luís Pasquetti; Araújo, Maristela Machado; Tabaldi, Luciane Almeri; Turchetto, Felipe; Tassinari, Adriele; Bernardy, Daniele; Griebeler, Adriana Maria; Barbosa, Felipe Manzoni; Aimi, Suelen Carpenedo; Brunetto, Gustavo

doi:10.1080/01904167.2021.1899216

Cited by 8 publications

(6 citation statements)

References 42 publications

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“…When the N concentration was too low or too high, photosynthesis was inhibited. These results were in accordance with the findings in Handroanthus heptaphyllus (Berghetti et al, 2021) and Cyclocarya paliurus (Qin et al, 2021). It was suggested that within a certain range, the application of N can increase the leaf area and SLA of plants, enhance the efficiency of capturing solar radiation, and thus enhancing photosynthesis (Seepaul et al, 2016).…”

Section: Photosynthesissupporting

confidence: 89%

“…P is an important component of enzymes required for plant photosynthesis and ATP (Shan et al, 2020). While N is the main component of chlorophyll, about 60% of the total N in leaves exists in chloroplasts, which can regulate the activities of enzymes related to the photosynthetic electron transport chain (Berghetti et al, 2021;Qin et al, 2021), and the increase of plant N content within a certain range would promote photosynthesis (Berghetti et al, 2021). Therefore, the promotion of symbiotic plant growth by AMF is closely related to the improvement of plant nutrition and the enhancement of plant photosynthesis, which was in accordance with the results of this study.…”

Section: Nutrient Absorption and Distributionmentioning

confidence: 99%

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Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism of Catalpa bungei C.A.Mey. under different nitrogen levels

Chen

Mou²,

Meng³

et al. 2023

Front. Plant Sci.

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Evidence suggests that arbuscular mycorrhizal fungi (AMF) may promote the growth of woody plants. However, the effects of AMF on nitrogen (N) metabolism in plants, especially trees, and its regulatory mechanism are rarely reported. Here, the effects of AMF inoculation on the growth and N nutrition status of Catalpa bungei under different N levels were reported. Three N levels (low, medium, high) and two mycorrhizal inoculation treatments (inoculation with Rhizophagus intraradices or not) were used with factorial design. The results showed that medium N could significantly improve the physiological metabolism and growth of C. bungei seedlings. However, when N was excessive, growth was significantly inhibited whether inoculated AMF or not. Compared with non-inoculated treatments, AMF inoculation could promote the absorption of N and P, improve photosynthesis under low to medium N levels, thus promoting the growth of seedlings. AMF changed the biomass allocation in seedlings by reducing the stem mass ratio and root/shoot ratio, and increasing the leaf mass ratio. At medium N levels, compared with non-inoculated treatment, AMF inoculation could significantly promote root growth by changing root hormone levels and improving root architecture and root activity. Under N addition, AMF inoculation could improve the absorption and assimilation of N by regulating the expression of key enzyme genes of N metabolism and nitrate transporter genes (NRT2.4, NRT2.5, NRT2.7) in roots, and enhancing the activities of the key enzyme of N metabolism. This study may provide a reference for the application of AMF in the cultivation and afforestation technology of C. bungei in Northwest China.

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Section: Photosynthesissupporting

confidence: 89%

Section: Nutrient Absorption and Distributionmentioning

confidence: 99%

Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism of Catalpa bungei C.A.Mey. under different nitrogen levels

Chen

Mou²,

Meng³

et al. 2023

Front. Plant Sci.

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“…Mattos, which belongs to the Bignoniaceae family and is popularly known as ipê-roxo, is one such tree species with phytoremediation potential. The species has significant ecological and economic value, making it useful for afforestation and urban landscaping projects (Berghetti et al, 2021). They are also commonly used in reforestation programs and to restore degraded areas (Silva et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Morpho-physiological and biochemical mechanisms of copper tolerance in Handroanthus heptaphyllus

Kuinchtner,

Aguilar,

Senhor

et al. 2023

Ciênc. agrotec.

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Copper (Cu)-contaminated soils are becoming more common, and phytoremediation is an effective strategy for reducing the negative effects of Cu on soils. Tree species are commonly used for this technique because they act as a barrier to this type of contamination. It is necessary to evaluate Cu tolerance and toxicity thresholds together with the harm this metal causes to plants. The objective of the current study was to investigate the tolerance of Handroanthus heptaphyllus plants to Cu through morpho-physiological, biochemical, and tissue Cu concentration analyses. H. heptaphyllus seedlings were subjected to nutrient solutions with varying concentrations of copper: 0, 5, 32, 64, 96, and 128 µM Cu in a hydroponic system. We conducted a morpho-physiological trait analysis on shoot height, root length, dry weight, morphological variables of the root system, leaf area, and photosynthetic variables. In addition, we also looked into photosynthetic pigments, antioxidant enzymes, lipid peroxidation, hydrogen peroxide concentration, and Cu accumulation in tissues. The values obtained for variables such as dry weight and pigments did not show significant differences, regardless of Cu concentration. Moreover, photosynthetic and transpiration rates were negatively affected only at the highest Cu concentration (128 µM). Overall, excess Cu had no effect on Handroanthus heptaphyllus below 128 µM. Cu accumulated mainly in the roots without a decrease in biomass, which could indicate the tolerance of the species to this metal as well as its great potential in the phytostabilization of Cu in contaminated soils.

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“…Native tree species such as Handroanthus heptaphyllus (Vell.) Mattos (popularly known in Brazil as ipê-roxo tree or ipê-rosa) are often used in projects focused on reforestation processes, environmental preservation, recovery of degraded areas, urban afforestation and landscaping [1][2][3]. H. heptaphyllus grows quickly and presents a long cylindrical stem, high-density wood, resistance and durability [3,4].…”

Section: Introductionmentioning

confidence: 99%

Root System Morphology of Ipê-Roxo Tree Grown in Soil Subjected to Phosphorus Application in Subtropical Climate Region

et al. 2021

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Phosphorus (P) availability in subtropical soils does not often meet the nutritional demand of native tree species such as the ipê-roxo tree (Handroanthus heptaphyllus); therefore, it is necessary to supply P at planting. However, the impact of P on root system growth remains unknown. The aim of the current study was to investigate the effect of P application on root morphology of H. heptaphyllus plants over a 36-month period in a subtropical climate region. During the experiment, the plants subjected to fertilization with 40 kg P ha−1 were compared to untreated control. Plant roots were scanned through minirhizotron system 18 and 36 months after transplant (MAT), and generated images were used to determine total root length, mean root diameter and total root volume. Plant height and leaf P concentrations were also evaluated. Phosphorus application enhanced root and whole plant growth with a more evident effect at 36 MAT, when soil P availability decreased. The results give important information on the cultivation of H. heptaphyllus plants in soils presenting low P availability.

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Effects of nitrogen fertilization on the growth and on photochemical efficiency in plants of Handroanthus heptaphyllus

Cited by 8 publications

References 42 publications

Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism of Catalpa bungei C.A.Mey. under different nitrogen levels

Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism of Catalpa bungei C.A.Mey. under different nitrogen levels

Morpho-physiological and biochemical mechanisms of copper tolerance in Handroanthus heptaphyllus

Root System Morphology of Ipê-Roxo Tree Grown in Soil Subjected to Phosphorus Application in Subtropical Climate Region

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