Morphophysiological adjustments to shade of jaboticaba tree saplings

Moura, Amanda Pacheco Cardoso; Gil, Bruna Valéria; Perboni, Anelise Tessari; Oliveira, Fabrícia Lorrane Rodrigues; Sant’Anna-Santos, Bruno Francisco; Danner, Moeses Andrigo

doi:10.1590/0034-737x202269040003

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Our results demonstrated that leaf anatomy changes aided in the guabiroba seedlings acclimation to total sunlight condition. In this treatment, the mesophyll (palisade and spongy parenchyma) thickness was responsible for the guabiroba leaf thickness; a similar effect has been observed in other Myrtaceae species (Da Costa et al, 2020;Moura et al, 2022). Inside sun leaves, palisade parenchyma contributes to the propagation efficiency and homogeneity of light, whilst spongy parenchyma promotes increases in the CO 2 diffusion (Barbosa-Campos et al, 2018;Karabourniotis et al, 2021).…”

Section: Discussionsupporting

confidence: 69%

Campomanesia xanthocarpa (Myrtaceae: Myrtoideae) seedlings reveal morpho-physiological plasticity under shade conditions

Almeida,

Giacobbo

et al. 2023

Braz. J. Biol.

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Plants exposed to different light intensities generate physiological, morphological, and anatomical changes conducting to plasticity. Thus, this characteristic establishes the ability of plants to present phenotypic adjustments by the same genotype under different environmental conditions. The objective of this study was to verify the morphophysiological alterations in Campomanesia xanthocarpa (Mart.) O. Berg (guabiroba) seedlings cultivated in different shading levels. The seedlings were grown for 21 months under full sun or 30%, 50%, and 80% under shading. Growth, photosynthetic pigments, gas exchange rate, chlorophyll fluorescence, and leaf anatomy were evaluated. In all the treatments subjected to shading, plasticity mechanisms involved structural and physiological changes such as an increase in leaf area and chlorophyll content (total and Chl a), reduction in leaf thickness, and increased gas exchange and quantum yield of photosystem II. The guabiroba seedlings can be cultivated in full sun or different shading environments; even under high shading intensity (80%), the plants showed vigor similar to those produced in a sunny environment. These results confirmed our hypothesis about guabiroba acclimation capacity to shading, noteworthy information for nurseries, orchards, agroforestry systems, or forest restoration in a wide range of light environments.

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Section: Discussionsupporting

confidence: 69%

Campomanesia xanthocarpa (Myrtaceae: Myrtoideae) seedlings reveal morpho-physiological plasticity under shade conditions

Almeida,

Giacobbo

et al. 2023

Braz. J. Biol.

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“…The largest specific leaf area and specific leaf mass were observed in shaded seedlings (Table 3), demonstrating that A. edulis seedlings converted a greater amount of photoassimilates per unit of photosynthetic area, verifying the hypothesis that cultivation under full sun conditions causes changes in morphophysiological responses. An increase in these indices indicates the adaptive ability of leaf tissues to optimize light capture (Moura et al, 2022) as a function of reduced incident radiation.…”

Section: Resultsmentioning

confidence: 99%

Morphophysiology and quality of Alibertia edulis seedlings grown under light contrast and organic residue

Santos

Goelzer

Silva

et al. 2023

Rev. bras. eng. agríc. ambient.

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Organic residue in the substrate and the availability of light influence the production of high-quality seedlings for ex situ cultivation of native forest species. This study aimed to evaluate the effect of doses of chicken manure incorporated in the soil and shading levels on the morphophysiological responses and quality of Alibertia edulis (Rich.) A. Rich seedlings. Five doses of chicken manure (CM) were tested, 0.00, 2.08, 4.16, 6.24, and 8.32 g CM kg-1 soil, under two shade conditions, 0% (full sun) and 50% shading. At 215 days after transplanting, the maximum height obtained for A. edulis was 47.35 cm with 5.64 g CM kg-1 soil under 50% shade. Shaded seedlings had a higher number of leaves. The maximum leaf and root areas were 796.64 and 118.83 cm2 with 5.32 and 4.21 g CM kg-1 soil, respectively, both under 50% shade. Seedlings in 0% shade had lower physiological indices. Shading levels did not affect stomatal limitation, but CM contributed to physiological efficiency. Shoot biomass was higher under 50% shade with higher CM doses. The highest quality indexes occurred with 3.98 and 6.28 g kg-1 CM under 0 and 50% shade, respectively. A. edulis seedlings responded positively to the addition of CM to the soil and presented plasticity under contrasting light conditions. A. edulis seedlings produced under 50% shading with the addition of 6.24 g CM kg-1 soil presented high morphophysiological and seedling quality indicators. The addition of 4.32 g CM kg-1 soil contributed to high seedling quality under full sun conditions.

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“…Previous studies portrayed that minimum radiance induces higher chlorophyll pigment content per mass unit [11], being part of the shade stress response. Various tree species displayed different chlorophyll levels under shade conditions [7,10,31]. Otherwise, although carotenoids are crucial in photoprotection under high-light regimes, some plants do not change these contents under light stress [31].…”

Section: Biochemical Traitsmentioning

confidence: 99%

“…Evidence suggests that E. uniflora seedlings exposed to various sunlight conditions can adjust their morphological and physiological characteristics to attain solar irradiation more efficiently [7][8][9][10]. These modifications are called acclimation or phenotypic plasticity, as a genotype's ability to produce diverse phenotypes under different environmental stresses [11].…”

Section: Introductionmentioning

confidence: 99%

Morpho-physiological and anatomical responses to shade avoidance are exhibited in Surinam cherry seedlings

Gil,

Moura,

Perboni

et al. 2024

Sci. Plena

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We aimed to evaluate the acclimation of Eugenia uniflora seedlings in response to irradiance gradient employing several morphological and photosynthetic traits. Seedlings were grown for 21 months under full sunlight (S0) and three artificial shade levels: 30% (S30), 50% (S50), and 80% (S80). Growth, biochemistry( pigments), photosynthetic, and anatomic parameters were assessed. Seedlings under S0 and S30 displayed the most significant growth, biomass accumulation, photosynthetic rate, and increased leaf thickness. S0 seedlings also had leaf anatomical traits associated with protection against total sunlight conditions, confirming irradiance tolerance. Nonetheless, the main attributes of shade acclimation in E. uniflora were revealed in S50 seedlings, where the increase in leaf area and the maintenance of gas exchange in this treatment achieved similar levels to seedlings under S0 and S30. Under S80, photosynthetic capacity, growth, and biomass accumulation were critically reduced. The plasticity index portrayed growth and photosynthetic traits as the most important variables that aid the adaptation of E. uniflora under different irradiance intensities. Conditions under S0 and S30 optimize the growth of Surinam cherry seedlings. Therefore, these conditions suit cultivating E. uniflora seedlings in nurseries and orchards. This study represents the first experimental approach to determining the optimal light intensity in E. uniflora seedlings.

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Morphophysiological adjustments to shade of jaboticaba tree saplings

Cited by 3 publications

References 27 publications

Campomanesia xanthocarpa (Myrtaceae: Myrtoideae) seedlings reveal morpho-physiological plasticity under shade conditions

Campomanesia xanthocarpa (Myrtaceae: Myrtoideae) seedlings reveal morpho-physiological plasticity under shade conditions

Morphophysiology and quality of Alibertia edulis seedlings grown under light contrast and organic residue

Morpho-physiological and anatomical responses to shade avoidance are exhibited in Surinam cherry seedlings

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