Foliar nutrient and carbohydrate in Aralia elata can be modified by understory light quality in forests with different structures at Northeast China

Wei, Hongxu; Chen, Xin; Chen, Guoshuang; Zhao, Hang

doi:10.15287/afr.2019.1395

Cited by 27 publications

(31 citation statements)

References 31 publications

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“…Instead, a multi-lights spectrum with high-red proportion can induce low glucose content but result in high starch accumulation [21][22][23]. The ratio of red to green lights in understory sunlight determined the consumption of foliar starch [24]. The spectrum with high red/green light-ratio promoted the hydrolyzation of starch in roots [6] and sugar in stem [8].…”

Section: Introductionmentioning

confidence: 99%

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

et al. 2021

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Streetlamps enforce night lighting on urban forest trees, but scarce information is available concerning the ecophysiological performance of street trees under these conditions. In this study, maple (Acer truncatum Bunge) and oak (Quercus mongolica Fisch. ex Ledeb.) seedlings were cultured with simulated exposure to streetlamp spectra in white (red/green/blue, 7.7:1.0:2.2) and red plus blue (RB; red/green/blue, 4.6:0.0:1.0) lights with photosynthetic photon flux rate of 80 μmol m-2 s-1 in a 18-h photoperiod. Nitrogen (N) was loaded through 15 weekly applications to an amount of 80 mg N plant-1 to mimic the mineral N deposition to landscape trees. Variables of biomass, carbohydrate accumulation, N and water contents were rarely found difference between the two LED-spectra treatments for both species. Compared to the un-lighted control, the RB spectrum lowered N concentration in oak seedlings and water content in maple seedlings. The white light spectrum resulted in an increase of starch concentration. Carbohydrate concentration had a positive relationship with biomass and N content across two species but a negative relationship with water content in maple seedlings. Overall, streetlamp-lights imposed effects on tree growth by a prolonged photoperiod instead of specific spectrum. Maple had a strong response of water uptake to streetlamp lighting at the cost of carbohydrate consumption, but oak had scarce demand of water-use for growth.

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Section: Introductionmentioning

confidence: 99%

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

et al. 2021

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“…The understory light condition not only varies in light intensity but also in light quality [ 5 , 6 ]. Field studies have verified that sunlight spectra can influence foliar physiology and secondary metabolisms in shoots of understory dwellers [ 7 , 8 ]. Compared to the aerial parts of a plant, much less is known about the effects of understory light spectra on underground response.…”

Section: Introductionmentioning

confidence: 99%

“…A light spectrum could theoretically modify the underground organ growth of tree plants. When desired illumination conditions are met, lighting spectra could modify root growth by adjusting carbohydrate assimilation and dry mass allocation towards underground organs [ 7 , 9 ]. Light can also promote the assimilation, synthesis, and accumulation of pigments at special wavelengths, which further adjust the internal cycling of nutrient allocation and cause root proliferation [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, P. pumila populations in central Kamchatka of Russia and northern parts of Japan are also regarded as a shade-tolerant species [ 34 , 39 ]. Understory light quality was found to vary in different forests of temperate montane ecosystems [ 7 , 8 ]. Pinus pumila needles contribute to photosynthesis as a response to irradiance [ 40 ].…”

Section: Introductionmentioning

confidence: 99%

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Root Foraging Precision of Pinus pumila (Pall.) Regel Subjected to Contrasting Light Spectra

Gao

Zhao

et al. 2021

Plants

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Root foraging behavior in heterogeneous patterns of soil nutrients is not well understood for undergrowth in alpine forests, where light spectra may generate an interactive effect on root foraging precision. A dwarf alpine species, Pinus pumila (Pall.) Regel., was cultured in pots where nitrogen (N)–phosphorus (P)–potassium (K) nutritional granules (N–P2O5–K2O, 14–13–13) were added to both halves of an inner space at a rate of 67.5 mg N (homogeneous) or 135 mg N to a random half (heterogeneous). Potted seedlings were subjected to either a green-and-blue light spectrum with a red-to-green light ratio of 4.24 (15.3% red, 64.9% green, and 19.8% blue) or a red-light enriched spectrum (69.4% red, 30.2% green, and 0.4% blue) both at irradiations of 200.43 µmol m−2 s−1. The root foraging precision was assessed by the difference in the fine root morphology or weight between the two halves. The foraging precision was assessed by both fine root length and surface area and was promoted in seedlings subjected to the heterogeneous pattern in the red-light enriched spectrum. Seedlings subjected to the green-and-blue light spectrum showed lower shoot growth, biomass, and root morphology but had higher shoot and root N and P concentrations. The heterogenous pattern resulted in greater seedling growth and fine root morphology as well as N and P concentrations compared to the homogeneous pattern. We conclude that P. pumila has a strong ability to forage nutrients in heterogenous soil nutrients, which can be further promoted by a spectrum with higher red-light proportions.

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“…The combined effect of sunlight spectra and N deposition is influencing understory regenerations in forest communities, which, however, has attracted surprisingly little attention. The most frequent employment of photosynthetic photon flux density (PPFD) at tree-perceived level in the above-mentioned LED lighting experiments ranged from 60-80 µmol m -2 s -1 [5,9], which fully falls in the range of understory sunlight transmittance [17]. The results of the above-mentioned studies demonstrate a knowledge gap that can be easily filled by new observations with studies using LED and N pulse to mimic natural conditions.…”

Section: Introductionmentioning

confidence: 93%

Light spectra modify nitrogen assimilation and nitrogen content inQuercus variabilisBlume seedling components: A bioassay with¹⁵N pulses

Gao

Zhang

et al. 2020

Preprint

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The light spectra that reach plants change across different shading conditions, may alter the pattern of nitrogen (N) uptake and assimilation by understory regenerations that are also exposed to N deposition. We conducted a bioassay on Chinese cork oak ( Quercus variabilis Blume) seedlings subjected to five-month N pulsing with 15 NH 4 Cl (10.39 atom %) at 120 mg 15 N plant -1 under the blue (48.5% blue, 33.7% green, and 17.8% red), red (14.6% blue, 71.7% red, 13.7% green), and green (17.4% blue, 26.2% red, 56.4% green) spectra provided by light-emitting diodes (LEDs). Half of the seedlings were fed twice a week using a 250 ppm N solution with added phosphorus, potassium, and micro-nutrients, while the other half received only distilled water. Neither treatment affected growth of height, diameter, or leaf area. Compared to the red light spectrum, the blue light treatment increased chlorophyll and soluble protein contents and glutamine synthetase (GS) activity, root N concentration, and N derived from the pulses. The green light spectrum induced more biomass to allocate to the roots and a higher percentage of N derived from internal reserves compared to the other two spectra. The 15 N pulses demonstrated no interaction with spectra but weakened the reliance on N remobilization from acorns, strengthened biomass allocation to shoots, and induced higher chlorophyll content, GS activity, and N concentration. In conclusion, the red light spectrum should be avoided for Q. variabilis regenerations whose biomass allocation to underground organs are weakened under this condition.

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Foliar nutrient and carbohydrate in Aralia elata can be modified by understory light quality in forests with different structures at Northeast China

Abstract: 2019. Foliar nutrient and carbohydrate in Aralia elata can be modifi ed by understory light quality in forests with diff erent structures at Northeast China. Ann. For. Res. 62(2): 125-137.

Cited by 27 publications

References 31 publications

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

Root Foraging Precision of Pinus pumila (Pall.) Regel Subjected to Contrasting Light Spectra

Light spectra modify nitrogen assimilation and nitrogen content inQuercus variabilisBlume seedling components: A bioassay with¹⁵N pulses

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Foliar nutrient and carbohydrate in Aralia elata can be modified by understory light quality in forests with different structures at Northeast China

Abstract: 2019. Foliar nutrient and carbohydrate in Aralia elata can be modifi ed by understory light quality in forests with diff erent structures at Northeast China. Ann. For. Res. 62(2): 125-137.

Cited by 27 publications

References 31 publications

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

Spectral effect of streetlamps on urban trees: A simulated study on tissue water, nitrogen, and carbohydrate contents in maple and oak

Root Foraging Precision of Pinus pumila (Pall.) Regel Subjected to Contrasting Light Spectra

Light spectra modify nitrogen assimilation and nitrogen content inQuercus variabilisBlume seedling components: A bioassay with15N pulses

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Light spectra modify nitrogen assimilation and nitrogen content inQuercus variabilisBlume seedling components: A bioassay with¹⁵N pulses