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Pospíšilová, Jana; Haisel, D.; Synková, Helena; Čatský, J.; Wilhelmová, N.; Plzáková, Š.; Procházková, Dagmar; Šrámek, F.

doi:10.1023/a:1006402719458

Cited by 39 publications

(8 citation statements)

References 23 publications

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“…The de-epoxidation state (DEPS) provides information on xanthophyll cycle activity and the degree of violaxanthin to zeaxanthin conversion. It was defined as (0.5A + Z)/(V + A + Z) following (Pospisilova et al, 2000). DEPSC is the value of DEPS relative to total chlorophyll production.…”

Section: Photosynthetic and Photoprotective Pigmentsmentioning

confidence: 99%

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

et al. 2020

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Knowledge of the relationship between environmental conditions and species traits is an important prerequisite for understanding determinants of community composition and predicting species response to novel climatic conditions. Despite increasing number of studies on this topic, our knowledge on importance of genetic differentiation, plasticity and their interactions along larger sets of species is still limited especially for traits related to plant ecophysiology. We studied variation in traits related to growth, leaf chemistry, contents of photosynthetic pigments and activity of antioxidative enzymes, stomata morphology and photosynthetic activity across eight Impatiens species growing along altitudinal gradients in Himalayas cultivated in three different temperature regimes and explored effects of among species phylogenetic relationships on the results. Original and target climatic conditions determine trait values in our system. The traits are either highly plastic (e.g., APX, CAT, plant size, neoxanthin, β-carotene, chlorophyll a/b, DEPSC) or are highly differentiated among populations (stomata density, lutein production). Many traits show strong among population differentiation in degree of plasticity and direction in response to environmental changes. Most traits indicate that the species will profit from the expected warming. This suggests that different processes determine the values of the different traits and separating the importance of genetic differentiation and plasticity is crucial for our ability to predict species response to future climate changes. The results also indicate that evolution of the traits is not phylogenetically constrained but including phylogenetic information into the analysis may improve our understanding of the trait-environment relationships as was apparent from the analysis of SLA.

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Section: Photosynthetic and Photoprotective Pigmentsmentioning

confidence: 99%

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

et al. 2020

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“…Photoprotection in higher plants is still not completely understood, and the actual response of plants to eCO 2 can depend strongly on abiotic stresses, including drought and temperature. Indeed, individual studies report diverse responses of the xanthophyll cycle in leaves exposed to eCO 2 with significant decreases, no changes, or significant increases in the mass of (V + A + Z) and the ratio of Z to (V + A) . Such variability reported in individual studies does not exclude a possibility that rising CO 2 downshifts the demand for NPQ and the xanthophyll cycle in C3 plants on the global scale.…”

Section: Introductionmentioning

confidence: 99%

Rising Atmospheric CO₂ Lowers Concentrations of Plant Carotenoids Essential to Human Health: A Meta‐Analysis

Loladze

Nolan

Ziska

et al. 2019

Molecular Nutrition Food Res

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Plant and human tissues (e.g., leaves, retina) share the need for carotenoids to protect against light‐induced and other oxidative stresses. While plants synthesize carotenoids de novo, humans must obtain them primarily through plant‐based foods. In plants, elevated levels of atmospheric carbon dioxide (eCO2) decrease the concentrations of essential minerals, including magnesium and zinc (essential for brain and eye health), but the overall effect of globally rising CO2 levels on carotenoids is unknown. Here, investigation is sought on how eCO2 affects carotenoids in plants. A meta‐analysis of 1026 experimental observations from 37 studies shows that eCO2 decreases plant carotenoid concentrations by 15% (95% CI: −26% to −6%). The meta‐analysis of available gene expression data for Arabidopsis thaliana points to a potential CO2‐induced downregulation of carotenoid biosynthesis (Log2 fold‐change −13%, 95% CI: −17% to −9%). Some other stoichiometric and biochemical mechanisms related to CO2‐induced changes in carotenoids are also highlighted. While overall eCO2 decreases carotenoid concentrations, individual CO2 studies report variable responses, including increases in carotenoid levels, especially in abiotically stressed plants. The initial assessment raises a novel question about the potential effects of rising CO2 on human health through its global effect on plant carotenoids.

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“…Plants cultivated in vitro often present peculiar characteristics, such as poorly developed shoots, tissues with low mechanical strength, higher water content, non-functional stomata and small, thin leaves with fewer trichomes and low photoautotrophic activity (Kozai and Kubota 2001;Cha-um et al 2011;Xiao et al 2011). These anomalies become negative features during transfer of in vitro plants into the greenhouse or field conditions, causing slow establishment and low survival rate (Pospíšilová et al 2000;Hazarika 2006;Saez et al Sáez et al 2012). Only few works have been documented about anatomical disorders on in vitro propagated bromeliad species (Carvalho et al 2014;Martins et al 2014), but how they might interfere on survival and growth rates of bromeliads after transfer to greenhouse is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Impacts of photoautotrophic and photomixotrophic conditions on in vitro propagated Billbergia zebrina (Bromeliaceae)

Martins

Verdoodt

Pasqual

et al. 2015

Plant Cell Tiss Organ Cult

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Micro-propagation techniques contribute to the multiplication of several bromeliad species. However, micropropagated plantlets often present low survival rate due to anatomical and physiological disorders induced by in vitro conditions. This study aimed to evaluate the sucrose and gas exchange impact on in vitro propagated Billbergia zebrina plants and to check if there is any residual effect of the in vitro conditions on micropropagated plants after acclimatization. Previously in vitro-established B. zebrina plants were transferred to culture media containing 0.0, 15.0, 30.0, 45.0 or 60.0 g L -1 sucrose. Two different culture container sealing systems were tested: lids with a filter (permitting an excellent gas exchange) and a filter covered with PVC (blocking fluent gas exchange). At 45 days in vitro growth, B. zebrina plantlets were transplanted onto plastic pots containing peat and cultivated for 80 days in greenhouse. At 45 days in vitro and 80 days of acclimatization in the greenhouse, the plants were evaluated. High sucrose levels in the in vitro media resulted in reduced growth. Plantlets exposed to aerated containers presented better rooting, being the sugar-free medium the best in vitro condition (photoautotrophic condition). Limited air exchange resulted in plantlets with anatomical and physiological disorders at the end of the in vitro period. The highest growth rate in the greenhouse was observed in plants previously propagated in unlimited gas exchange system and sugar-free medium. The use of photoautotrophic conditions induces B. zebrina plantlets without anatomical and physiological disorders and it interfere positively on ex vitro growth.

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Cited by 39 publications

References 23 publications

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

Rising Atmospheric CO₂ Lowers Concentrations of Plant Carotenoids Essential to Human Health: A Meta‐Analysis

Impacts of photoautotrophic and photomixotrophic conditions on in vitro propagated Billbergia zebrina (Bromeliaceae)

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Untitled

Cited by 39 publications

References 23 publications

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

Plant Origin, but Not Phylogeny, Drive Species Ecophysiological Response to Projected Climate

Rising Atmospheric CO2 Lowers Concentrations of Plant Carotenoids Essential to Human Health: A Meta‐Analysis

Impacts of photoautotrophic and photomixotrophic conditions on in vitro propagated Billbergia zebrina (Bromeliaceae)

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Rising Atmospheric CO₂ Lowers Concentrations of Plant Carotenoids Essential to Human Health: A Meta‐Analysis