Morphoanatomy and ecophysiology of tree seedlings in semideciduous forest during high-light acclimation in nursery

Calzavara, Anderson Kikuchi; Bianchini, Edmilson; Mazzanatti, T.; Oliveira, Halley Caixeta; Stolf-Moreira, Renata; Pimenta, José Antônio

doi:10.1007/s11099-015-0151-0

Cited by 18 publications

(7 citation statements)

References 74 publications

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“…In contrast to the other plant species 10 , macaw palm seedlings did not exhibit significant anatomical changes in leaf tissues following exposure to contrasting light intensities. In response to increased light intensity, the differentiation of new layers or stretching of the cells of the palisade parenchyma and consequently increase in the thickness of the mesophyll are common 8 , 56 , as well as in the interception of light 11 . However, the greater elongation of mesophyll cells on the adaxial surface of macaw palm leaflets than on other surfaces appears to be a typical structural pattern of the species, regardless of the light condition.…”

Section: Discussionmentioning

confidence: 99%

Acclimation responses of macaw palm seedlings to contrasting light environments

Dias

Siqueira-Silva²,

Souza³

et al. 2018

Sci Rep

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The photosynthetic adjustments of macaw palm (Acrocomia aculeata) were evaluated in 30-day-old seedlings exposed to high and low light environments, and sudden transference from low to high light and comparisons were made with the hardening protocol used in nurseries. Furthermore, we evaluated the responses to long-term exposure (265 days) to high and low light environments. Macaw palm seedlings exhibited an efficient mechanism that maximized light capture under scarce conditions, and dissipated excess energy to avoid damaging to the photosystem II under high light. The seedlings showed low saturation irradiance but no photoinhibition when exposed to excess light. When grown under low light intensities, seedlings presented higher photochemical efficiency and minimized the respiratory costs with positive carbon balance at lower irradiance than hardened seedlings did. The hardening procedure did not appear to be an advantageous method during seedling production. Long-term exposure to either low or high light did not cause significant leaf anatomical adjustments. However, the low light seedlings showed higher leaf area and chlorophyll content than those exposed to higher light intensity did, which enabled shaded seedlings to maximize the captured light. Furthermore, the high non-photochemical dissipation allowed rapid acclimation to excessive light exposure. These responses allow macaw palm cultivation and establishment in very different light environments.

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Section: Discussionmentioning

confidence: 99%

Acclimation responses of macaw palm seedlings to contrasting light environments

Dias

Siqueira-Silva²,

Souza³

et al. 2018

Sci Rep

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“…Different studies showed a possible intraspecific variability and phenotypic plasticity in Cork oak as an adaptation to contrasting regional climate conditions (Balaguer et al 2001, Aranda et al 2005, Staudt et al 2008, Ramirez-Valiente et al 2010, Matesanz & Valladares 2014, Gratani 2014. Investigating the influence of full-sun on seedling hardiness, Calzavara et al (2015) suggested that the acclimation process can induce changes in physiological, anatomical, and morphological traits of plants, favoring their establishment after transplantation to the field. The results of the present study indicate that the lower An in the HL leaves of Feija were not related to the limited stomatal conductance.…”

Section: Discussionmentioning

confidence: 99%

Adjustment of photosynthetic carbon assimilation to higher growth irradiance in three-year-old seedlings of two Tunisian provenances of Cork Oak (Quercus suber L.)

Rzigui¹,

Chérif²,

Zorrig³

et al. 2017

iForest

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Three-year-old seedlings of two Tunisian provenances of cork oak (Quercus suber L.) differing in climatic conditions at their geographical origin were subjected to increasing light intensities. Gaâfour was the provenance from the driest site and Feija from the wettest site. Low-light adapted seedlings from both provenances were exposed to two light treatments: full sunlight (HL) and low light (LL, 15% sunlight) for 40 days. The CO2-response curve of leaf net photosynthesis (An-Ci curve) established under saturated photon flux density was used to compare photosynthetic parameters between leaves subjected to continuous low light (LL leaves) and leaves transferred from low to high light (HL leaves). Transfer from low to high light significantly increased net photosynthesis (An) and dark respiration (Rd) in Gaâfour provenance but not in Feija. After transfer to high irradiance, specific leaf area (SLA) did not change in either provenance. This suggested that the increase in photosynthetic capacity on a leaf area basis in HL leaves of Gaâfour provenance was not due to increased leaf thickness. Only the seedlings from the Gaâfour provenance were able to acclimate to high light by increasing Vcmax and Jmax.

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“…In terms of light quality, monochromatic red light irradiation generally results in a decrease of leaf thickness (Shengxin et al , Zheng and Van Labeke ). Blue light‐enriched illumination is reported to be beneficial in the enlargement of palisade cells or development of multiple layers of palisade cells (Table S1, Shengxin et al , Zheng and Van Labeke ), which can favor photosynthetic acclimation (Abidi et al , Calzavara et al , Sanches et al ). Metabolism of plants, including the antioxidative status, is influenced by light environment (Ouzounis et al , Meng et al ).…”

Section: Introductionmentioning

confidence: 99%

Spectral quality of monochromatic LED affects photosynthetic acclimation to high‐intensity sunlight of Chrysanthemum and Spathiphyllum

Zheng

Steppe

Labeke

2020

Physiologia Plantarum

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Vertical farming using light‐emitting diode offers potential for the early production phase (few weeks) of young ornamental plants. However, once transferred to the greenhouse, the photosynthetic acclimation of these young plants might depend on this initial light regime. To obtain insight about this acclimatization, Chrysanthemum (sun species) and Spathiphyllum (shade species) were preconditioned in growth chambers for 4 weeks under four light qualities: blue (B), red (R), red/blue (RB, 60% R) and white (W) at 100 μmol m−2 s−1. Monochromatic light (R and B) limited leaf development of both species, which resulted in a lower leaf mass per area when compared to multispectral light (RB for Chrysanthemum, RB and W for Spathiphyllum). R‐developed leaves had a lower photosynthetic efficiency in both species. After the light quality pretreatment, plants were transferred to the greenhouse with high‐intensity natural light conditions. On the first day of transfer, R and B preconditioned leaves of both species had an inhibited photosynthesis. After 1 week in natural light condition, rapid light curve parameters of Chrysanthemum leaves that developed under B acclimated to sunlight had a similar level than RB‐developed leaves unlike R‐leaves. Spathiphyllum leaves showed a decrease in maximum electron transport rate and this was most pronounced for the R pretreatment. After 1 month, R‐preconditioned Chrysanthemum had the lowest dry mass, while no effects on the dry weight of Spathiphyllum with respect to the pretreatments were observed. Light quality during preconditioning affected the leaf ability to acclimate to natural high light intensities in greenhouse environment.

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Morphoanatomy and ecophysiology of tree seedlings in semideciduous forest during high-light acclimation in nursery

Cited by 18 publications

References 74 publications

Acclimation responses of macaw palm seedlings to contrasting light environments

Acclimation responses of macaw palm seedlings to contrasting light environments

Adjustment of photosynthetic carbon assimilation to higher growth irradiance in three-year-old seedlings of two Tunisian provenances of Cork Oak (Quercus suber L.)

Spectral quality of monochromatic LED affects photosynthetic acclimation to high‐intensity sunlight of Chrysanthemum and Spathiphyllum

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