Photosynthesis, A Comprehensive Treatise

Sassenrath-Cole, Gretchen F.

doi:10.2135/cropsci1999.0011183x003900010046x

Cited by 5 publications

(6 citation statements)

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“…Even though the chloroplast genome is typically far smaller than most plant nuclear genomes, chloroplasts play a crucial role in plant survival, adaptation, and evolution (Wicke et al, 2011;Gao et al, 2019;Zhao C. et al, 2019;Dopp et al, 2021). In angiosperms, chloroplast genomes typically exhibit a conserved quadripartite structure, which includes two inverted repeat regions (IRs), a small single copy (SSC) region, and a large single copy (LSC) region (Shinozaki et al, 1986), as well as a relatively conserved set of genes, which can be categorized according to their involvement in photosynthesis, transcription, translation, and biosynthesis (Sassenrath-Cole, 1998). Chloroplast genes, usually 110-130, include two sets of four ribosomal RNA genes and 30 tRNA genes, which are capable of interacting with all mRNA codons by wiggle (Rogalski et al, 2008;Sibah et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Chloroplast Genome Evolution in Four Montane Zingiberaceae Taxa in China

Yang,

Fu,

et al. 2022

Front. Plant Sci.

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Chloroplasts are critical to plant survival and adaptive evolution. The comparison of chloroplast genomes could provide insight into the adaptive evolution of closely related species. To identify potential adaptive evolution in the chloroplast genomes of four montane Zingiberaceae taxa (Cautleya, Roscoea, Rhynchanthus, and Pommereschea) that inhabit distinct habitats in the mountains of Yunnan, China, the nucleotide sequences of 13 complete chloroplast genomes, including five newly sequenced species, were characterized and compared. The five newly sequenced chloroplast genomes (162,878–163,831 bp) possessed typical quadripartite structures, which included a large single copy (LSC) region, a small single copy (SSC) region, and a pair of inverted repeat regions (IRa and IRb), and even though the structure was highly conserved among the 13 taxa, one of the rps19 genes was absent in Cautleya, possibly due to expansion of the LSC region. Positive selection of rpoA and ycf2 suggests that these montane species have experienced adaptive evolution to habitats with different sunlight intensities and that adaptation related to the chloroplast genome has played an important role in the evolution of Zingiberaceae taxa.

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Section: Introductionmentioning

confidence: 99%

Chloroplast Genome Evolution in Four Montane Zingiberaceae Taxa in China

Yang,

Fu,

et al. 2022

Front. Plant Sci.

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“…These processes are: (i) the slow (Zhu et al, 2004) and fast (Hubbart et al, 2012;Armbruster et al, 2014;Kromdijk et al, 2016) components of non-photochemical quenching, (ii) activation of enzymes in the Calvin cycle (Sassenrath-Cole et al, 1994;Mott and Woodrow, 2000), (iii) opening of stomata (Allen and Pearcy, 2000a), (iv) delays in CO2 release by photorespiration (Vines et al, 1983), and (v) consumption of Calvin cycle metabolites after decreases in irradiance (Sharkey et al, 1986b). These observations were confirmed by the experiment described in Chapter 3 and the in silico analysis in Chapter 4.…”

Section: What Is the Importance Of Different Photosynthetic Processessupporting

confidence: 58%

“…It is now generally accepted that induction of photosynthesis (at the scale of minutes) is, at least, limited by activation of Rubisco and opening of the stomata (Allen and Pearcy, 2000a;Vialet-Chabrand et al, 2016). Other potential effects may be associated with activation of other enzymes in the Calvin cycle (Sassenrath-Cole et al, 1994), build-up of metabolites in the Calvin cycle (Walker, 1973), and activation of sucrose phosphate synthase (Stitt and Grosse, 1988).…”

Section: Photosynthesis In Its Natural Environmentmentioning

confidence: 99%

“…These values correspond to FBPase, but similar values could be derived for PRK from the same source. Changes in the activity of enzymes like PRK and FBPase follow first-order kinetics (Sassenrath-Cole et al, 1994) with different rate constants for increases and decreases:…”

Section: 73mentioning

confidence: 99%

“…Changes in Rubisco activity follow first-order kinetics (Sassenrath-Cole et al, 1994;Pearcy et al, 1997;Mott and Woodrow, 2000) and the rate constant of Rubisco activation is proportional to the concentration of reduced Rca: where e ËNS (s −1 ) is the maximum rate constant of Rubisco activation with fully active Rca, and e ËN¥ (s −1 ) is the rate constant of Rubisco inhibition. The values reported in the literature for e ËN¥ vary between 4.2×10 −4 s −1 (Gross et al, 1991) to 1.6×10 −3 s −1 (Hammond et al, 1998) and we chose a value of 4.2×10 −4 s −1 .…”

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confidence: 99%

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Dynamic photosynthesis under a fluctuating environment: a modelling-based analysis

Sierra

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Integrated Analysis of Hi-C and RNA-Seq Reveals the Molecular Mechanism of Autopolyploid Growth Advantages in Pak Choi (Brassica rapa ssp. chinensis)

Song²,

Lyu³

et al. 2022

Front. Plant Sci.

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Polyploids generated by the replication of a single genome (autopolyploid) or synthesis of two or more distinct genomes (allopolyploid) usually show significant advantages over their diploid progenitors in biological characteristics, including growth and development, nutrient accumulation, and plant resistance. Whereas, the impacts of genomic replication on transcription regulation and chromatin structure in pak choi have not been explored fully. In this study, we observed the transcriptional and genomic structural alterations between diploid B. rapa (AA) and artificial autotetraploid B. rapa (AAAA) using RNA-seq and Hi-C. RNA-seq revealed 1,786 differentially expressed genes (DEGs) between the diploids and autotetraploids, including 717 down-regulated and 1,069 up-regulated genes in autotetraploids. Of all the 1,786 DEGs, 23 DEGs (10 down-regulated DEGs in autotetraploids) were involved in Compartment A-B shifts, while 28 DEGs (20 up-regulated DEGs in autotetraploids) participated in Compartment B-A shifts. Moreover, there were 15 DEGs in activated topologically associating domains (TADs) (9 up-regulated DEGs in diploids) and 80 DEGs in repressed TADs (49 down-regulated DEGs in diploids). Subsequently, eight DEGs with genomic structural variants were selected as potential candidate genes, including four DEGs involved in photosynthesis (BraA01003143, BraA09002798, BraA04002224, and BraA08000594), three DEGs related to chloroplast (BraA05002974, BraA05001662, and BraA04001148), and one DEG associated with disease resistance (BraA09004451), which all showed high expression in autotetraploids. Overall, our results demonstrated that integrative RNA-seq and Hi-C analysis can identify related genes to phenotypic traits and also provided new insights into the molecular mechanism of the growth advantage of polyploids.

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Photosynthesis, A Comprehensive Treatise

Cited by 5 publications

References 0 publications

Chloroplast Genome Evolution in Four Montane Zingiberaceae Taxa in China

Chloroplast Genome Evolution in Four Montane Zingiberaceae Taxa in China

Dynamic photosynthesis under a fluctuating environment: a modelling-based analysis

Integrated Analysis of Hi-C and RNA-Seq Reveals the Molecular Mechanism of Autopolyploid Growth Advantages in Pak Choi (Brassica rapa ssp. chinensis)

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