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Lindahl, Marika; Funk, Christiane; Webster, Jeanette; Bingsmark, Sophie; Adamska, Iwona; Andersson, Bertil

doi:10.1023/a:1005920730947

Cited by 43 publications

(6 citation statements)

References 39 publications

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“…We also observed that PsbS content is significantly higher in HL-adapted plants with respect to control, whereas it is reduced upon LL acclimation. It should be mentioned that all previous estimations by Western blotting analysis failed to identify any significant variation of PsbS protein levels in plants adapted to different light intensities (43,44), although PsbS mRNA levels were shown to be increased under strong illumination and low temperature conditions (44). The discrepancy with our results can be explained by considering the methods used for the quantification.…”

Section: Discussioncontrasting

confidence: 99%

Contrasting Behavior of Higher Plant Photosystem I and II Antenna Systems during Acclimation

Ballottari

Dall’Osto

Morosinotto

et al. 2007

Journal of Biological Chemistry

271

222

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In this work we analyzed the photosynthetic apparatus in Arabidopsis thaliana plants acclimated to different light intensity and temperature conditions. Plants showed the ability to acclimate into different environments and avoid photoinhibition. When grown in high light, plants had a faster activation rate for energy dissipation (qE). This ability was correlated to higher accumulation levels of a specific photosystem II subunit, PsbS. The photosystem II antenna size was also regulated according to light exposure; smaller antenna size was observed in high light-acclimated plants with respect to low light plants. Different antenna polypeptides did not behave similarly, and Lhcb1, Lchb2, and Lhcb6 (CP24) are shown to undergo major levels of regulation, whereas Lhcb4 and Lhcb5 (CP29 and CP26) maintained their stoichiometry with respect to the reaction center in all growth conditions. The effect of acclimation on photosystem I antenna was different; in fact, the stoichiometry of any Lhca antenna proteins with respect to photosystem I core complex was not affected by growth conditions. Despite this stability in antenna stoichiometry, photosystem I light harvesting function was shown to be regulated through different mechanisms like the control of photosystem I to photosystem II ratio and the association or dissociation of Lhcb polypeptides to photosystem I.

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Section: Discussioncontrasting

confidence: 99%

Contrasting Behavior of Higher Plant Photosystem I and II Antenna Systems during Acclimation

Ballottari

Dall’Osto

Morosinotto

et al. 2007

Journal of Biological Chemistry

271

222

View full text Add to dashboard Cite

show abstract

“…Notably, the inhibition of plastoquinone QA results in a reduction of electron transfer and subsequent light absorption [ 8 , 9 ]. The collective effect of copper on chloroplast function may result in photodamage and ROS mediated damage [ 70 , 71 ]. Upregulation of ELIP may potentially serve a photoprotective role to preserve chloroplast function and light absorption, although the exact mechanism of action has yet to be described [ 69 ].…”

Section: Discussionmentioning

confidence: 99%

Gene expression profiling of Jack Pine (Pinus banksiana) under copper stress: Identification of genes associated with copper resistance

Moy,

Czajka,

Michael

et al. 2024

PLoS ONE

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Understanding the genetic response of plants to copper stress is a necessary step to improving the utility of plants for environmental remediation and restoration. The objectives of this study were to: 1) characterize the transcriptome of Jack Pine (Pinus banksiana) under copper stress, 2) analyze the gene expression profile shifts of genotypes exposed to copper ion toxicity, and 3) identify genes associated with copper resistance. Pinus banksiana seedlings were treated with 10 mmoles of copper and screened in a growth chamber. There were 6,213 upregulated and 29,038 downregulated genes expressed in the copper resistant genotypes compared to the susceptible genotypes at a high stringency based on the false discovery rate (FDR). Overall, 25,552 transcripts were assigned gene ontology. Among the top upregulated genes, the response to stress, the biosynthetic process, and the response to chemical stimuli terms represented the highest proportion of gene expression for the biological processes. For the molecular function category, the majority of expressed genes were associated with nucleotide binding followed by transporter activity, and kinase activity. The majority of upregulated genes were located in the plasma membrane while half of the total downregulated genes were associated with the extracellular region. Two candidate genes associated with copper resistance were identified including genes encoding for heavy metal-associated isoprenylated plant proteins (AtHIP20 and AtHIP26) and a gene encoding the pleiotropic drug resistance protein 1 (NtPDR1). This study represents the first report of transcriptomic responses of a conifer species to copper ions.

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“…These results showed that the high activity of SOD and CAT is doubtless in response to the oxygen evolving photosynthetic activity in the R light. This is correlated with the NPQ increase and higher Car content, which could help to quench ROS, causing less production of ROS in the G. lemaneiformis [35]. …”

Section: Discussionmentioning

confidence: 99%

Effect of Different Light Qualities on Growth, Pigment Content, Chlorophyll Fluorescence, and Antioxidant Enzyme Activity in the Red AlgaPyropia haitanensis(Bangiales, Rhodophyta)

2016

BioMed Research International

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Spectral light changes evoke different morphogenetic and photosynthetic responses that can vary among different algae species. The aim of this study is to investigate the photosynthetic characteristics of the red macroalgae grown under different spectrum environments. In this study, Pyropia haitanensis were cultured under blue, red, and green LED and fluorescent tubes light. The growth rate, photopigment composition, chlorophyll fluorescence, and antioxidative enzymes activities in different light spectrums were investigated. The results revealed that growth rate was significantly higher in the thalli grown under blue, green, and fluorescent tubes light. Contents of Chl a and phycobiliprotein in red light were lower among all the growth conditions. Furthermore, a striking increase in SOD and CAT activity was observed in red light treatment along with the NPQ increase. The results revealed that the photosynthetic efficiency and increased growth rate of P. haitanensis benefitted from light spectrums such as blue, green, and fluorescent tubes light by pigment composition and photochemical efficiency manipulation, whereas red light has disadvantageous effects. Accordingly, the results for improving quality and the economic yield of algae species in some extent and the combination of different wavelengths could allow better economic resource exploitation.

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Untitled

Cited by 43 publications

References 39 publications

Contrasting Behavior of Higher Plant Photosystem I and II Antenna Systems during Acclimation

Contrasting Behavior of Higher Plant Photosystem I and II Antenna Systems during Acclimation

Gene expression profiling of Jack Pine (Pinus banksiana) under copper stress: Identification of genes associated with copper resistance

Effect of Different Light Qualities on Growth, Pigment Content, Chlorophyll Fluorescence, and Antioxidant Enzyme Activity in the Red AlgaPyropia haitanensis(Bangiales, Rhodophyta)

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