Light acclimation in nursery: morphoanatomy and ecophysiology of seedlings of three light-demanding neotropical tree species

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

doi:10.1007/s40415-015-0203-5

Cited by 19 publications

(15 citation statements)

References 49 publications

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“…No caso da TAL, as diferenças verificadas entre os experimentos podem estar relacionadas com o aumento da capacidade fotossintética das folhas, em função do tempo de permanência no viveiro, visto que a TAL apresenta relação direta com a taxa fotossintética líquida (Montgomery, 2004;Feijó et al, 2009). Mazzanatti et al (2015) observaram que a taxa fotossintética líquida aumentou com o tempo de permanência das mudas no viveiro até aproximadamente 100 dias, após o início do experimento para Heliocarpus papayanensis Kunth (Malvaceae), embora não tenham sido encontradas alterações para mudas de Guazuma ulmifolia Lam. (Malvaceae) e Aegiphila integrifolia (Jacq.)…”

Section: Resultsunclassified

Crescimento e qualidade de mudas de Inga laurina em função do substrato e adubação suplementar

Jesus¹,

Júnior

Góes

et al. 2016

Pesq. Flor. Bras.

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Resumo -O objetivo deste estudo foi avaliar o efeito de misturas de um substrato comercial e pó de fibra de coco (PFC) no crescimento e na qualidade de mudas de Inga laurina (Sw.) Willd. (Fabaceae). Tubetes de polietileno foram preenchidos com quatro misturas do substrato comercial HS Florestal® (HSF) e PFC nas proporções: T1 = 100% HSF; T2 = 80% HSF + 20% PFC; T3 = 60% HSF + 40% PFC e T4 = 40% HSF + 60% PFC. Os experimentos foram realizados de forma independente, em presença (experimento I) e ausência (experimento II) de adubação suplementar. Foram realizadas avaliações de crescimento e qualidade das mudas ao final dos experimentos, aos 81 dias (experimento I) e 110 dias (experimento II) após a repicagem. Concluiu-se que o uso da adubação suplementar não apresentou diferenças em crescimento e qualidade das mudas de I. laurina até o percentual de 60% de PFC misturado ao substrato comercial. Sem a adição de adubação suplementar, a mistura com 80% HSF + 20% PFC é indicada para a produção de mudas de I. laurina. Além disso, a ausência de adubação suplementar nitrogenada e a adição de PFC ao substrato estimularam a nodulação. Growth and quality of Inga laurina seedlings as a function of the substrate and additional fertilizationAbstract -The aim of this study was to evaluate the effect of mixtures of a commercial substrate and coconut coir dust (CCD) to grow Inga laurina (Sw.) Willd. (Fabaceae) seedlings. Polyethylene tubes were filled with four mixtures of a commercial substrate HS Florestal® (HSF) and CCD in the following proportions: T1 = 100% HSF, T2 = 80% HSF + 20% CCD, T3 = 60% HSF + 40% CCD and T4 = 40% HSF + 60% CCD. The experiments were conducted independently, with supplement fertilization (experiment I) and without (experiment II). Seedlings growth and quality were evaluated at the end of the experiments, 81 days (experiment I) and 110 days (experiment II) after transplanting. It was concluded that supplement fertilization presented no differences in the growth and quality of I. laurina seedlings until up to 60% of PFC mixed with commercial substrate. Without supplement fertilization the mix of 80% HSF + 20% PFC is indicate for production of I. laurina seedlings. Moreover, the lack of supplement nitrogen fertilization and addition of PFC to the commercial substrate stimulated nodulation.

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Section: Resultsunclassified

Crescimento e qualidade de mudas de Inga laurina em função do substrato e adubação suplementar

Jesus¹,

Júnior

Góes

et al. 2016

Pesq. Flor. Bras.

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“…Higher light increases photosynthetic potential (Sáez et al, ), and studies show that light intensity and stomatal density are positively related across a broad range (Kong et al, ; Mazzanatti et al, ; Pazourek, ; Petrova, ; Rozendaal, Hurtado, & Poorter, ). Conversely, the reduced light intensity under a denser canopy should lead to lower stomatal density, as found by this study.…”

Section: Discussionmentioning

confidence: 99%

From salmon to salmonberry: The effects of salmon‐derived nutrients on the stomatal density of leaves of the nitriphilic shrub Rubus spectabilis

et al. 2018

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Nutrients derived from the carcasses of Pacific salmon have been shown to have wide‐ranging effects on riparian systems. These include changes in community species composition and an increase in leaf nitrogen concentration, with the latter effect pronounced in the nitriphilic shrub Rubus spectabilis (salmonberry). Experimental work with other species has shown that leaf stomatal density increases in response to nitrogen fertilization. We predicted that the stomatal density of salmonberry leaves would vary directly with the density of spawning salmon in salmonberry leaves collected from 16 streams in the vicinity of Bella Bella, on British Columbia’s central coast. We estimated the stomatal density along each stream, and quantified stream characteristics, including the number of spawning salmon (Oncorhynchus spp.), canopy cover, stem density and soil moisture. We found that salmon have both direct and indirect effects on stomatal density, the latter mediated by canopy cover and stem density. Salmonberry stomatal density increased by 1.12 stomata per mm2 (~0.5%) for every kg of salmon per metre of stream. Over the range of salmon densities observed (1.8–49.0 kg per metre of stream), stomatal density increased by almost 45 mm−2, or more than 20%. These data confirm that the stomatal density in salmonberry responds positively to the opportunity for greater productivity provided by salmon carcasses. The data provide insight into the physiological and morphological processes supporting nitrogen uptake, which in turn influences plant community composition. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13202/suppinfo is available for this article.

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“…(Malvaceae), it was not clear whether the recovery of photosynthesis was due to the development of new leaves acclimated to high light, or the acclimation of pre‐existing mature leaves, since the analyses were always performed in the penultimate fully expanded leaf at the time of measurements, regardless of whether it initially developed under shade or full sun (Mazzanatti et al . ). Thus, it is possible that photoinhibition recovery in the studied species is related to the development of new leaves and not necessarily to acclimation of the pre‐existing leaves.…”

Section: Introductionmentioning

confidence: 97%

Acclimation responses to high light by Guazuma ulmifolia Lam. (Malvaceae) leaves at different stages of development

et al. 2017

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The re-composition of deforested environments requires the prior acclimation of seedlings to full sun in nurseries. Seedlings can overcome excess light either through the acclimation of pre-existing fully expanded leaves or through the development of new leaves that are acclimated to the new light environment. Here, we compared the acclimation capacity of mature (MatL, fully expanded at the time of transfer) and newly expanded (NewL, expanded after the light shift) leaves of Guazuma ulmifolia Lam. (Malvaceae) seedlings to high light. The seedlings were initially grown under shade and then transferred to full sunlight. MatL and NewL were used for chlorophyll fluorescence and gas exchange analyses, pigment extraction and morpho-anatomical measurements. After the transfer of seedlings to full sun, the MatL persisted and acclimated to some extent to the new light condition, since they underwent alterations in some morpho-physiological traits and maintained a functional electron transport chain and positive net photosynthesis rate. However, long-term exposure to high light led to chronic photoinhibition in MatL, which could be related to the limited plasticity of leaf morpho-anatomical attributes. However, the NewL showed a high capacity to use the absorbed energy in photochemistry and dissipate excess energy harmlessly, attributes that were favoured by the high structural plasticity exhibited by these leaves. Both the maintenance of mature, photosynthetically active leaves and the production of new leaves with a high capacity to cope with excess energy were important for acclimation of G. ulmifolia seedlings.

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Light acclimation in nursery: morphoanatomy and ecophysiology of seedlings of three light-demanding neotropical tree species

Cited by 19 publications

References 49 publications

Crescimento e qualidade de mudas de Inga laurina em função do substrato e adubação suplementar

Crescimento e qualidade de mudas de Inga laurina em função do substrato e adubação suplementar

From salmon to salmonberry: The effects of salmon‐derived nutrients on the stomatal density of leaves of the nitriphilic shrub Rubus spectabilis

Acclimation responses to high light by Guazuma ulmifolia Lam. (Malvaceae) leaves at different stages of development

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