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Pesquisa : A11.284.430.214.190.875.700 [Categoria DeCS]
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[PMID]:29458669
[Au] Autor:Barcyte D; Hodac L; Nedbalová L; Elster J
[Ad] Endereço:1​Department of Ecology, Faculty of Science, Charles University, Vinicná 7, Prague 2, 128 44, Czech Republic.
[Ti] Título:Chloromonas arctica sp. nov., a psychrotolerant alga from snow in the High Arctic (Chlamydomonadales, Chlorophyta).
[So] Source:Int J Syst Evol Microbiol;68(3):851-859, 2018 Mar.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:With the advent of molecular phylogenetic methods, it has become possible to assess the bioversity of snow algae more accurately. In this study, we focused on a morphological, ultrastructural and taxonomic description of a new Chloromonas-like alga isolated from snow in the High Arctic (Svalbard). Light and transmission electron microscopy revealed broad ellipsoidal or ellipsoidal-cylindrical, occasionally spherical cells with a chloroplast without a pyrenoid, an inconspicuous eyespot and a papilla. The size difference and the aforementioned morphological traits clearly distinguished the alga from its closest counterparts within the genus Chloromonas. Moreover, we were able to cultivate the alga at both 5 and 20 °C, revealing the psychrotolerant nature of the strain. Phylogenetic analyses of the plastid rbcL and nuclear 18S rRNA gene showed that the alga is nested within a clade containing a number of psychrotolerant strains within the Chloromonadinia phylogroup (Chlorophyceae). In the rbcL phylogeny, the alga formed an independent lineage, sister to the freshwater species Chloromonas paraserbinowii. Comparisons of secondary structure models of a highly variable ITS2 rDNA marker showed support for a distinct species identity for the new strain. The ITS2 secondary structure of the new isolate differed from the closest matches 'Chlamydomonas' gerloffii and Choloromonas reticulata by three and five compensatory base changes, respectively. Considering the morphological and molecular differences from its closest relatives, a new psychrotolerant species from the Arctic, Choromonas arctica sp. nov., is proposed.
[Mh] Termos MeSH primário: Filogenia
Neve
Volvocida/classificação
[Mh] Termos MeSH secundário: DNA de Algas/genética
DNA Espaçador Ribossômico/genética
Plastídeos/genética
RNA Ribossômico 18S/genética
Análise de Sequência de DNA
Svalbard
Volvocida/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Algal); 0 (DNA, Ribosomal Spacer); 0 (RNA, Ribosomal, 18S)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180221
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.002595


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[PMID]:29054811
[Au] Autor:Silva SR; Gibson R; Adamec L; Domínguez Y; Miranda VFO
[Ad] Endereço:Universidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatu, São Paulo, Brazil; Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, Departamento de Biologia Aplicada à Agropecuária, São Paulo, Brazil.. Electronic address: saura.silva@gma
[Ti] Título:Molecular phylogeny of bladderworts: A wide approach of Utricularia (Lentibulariaceae) species relationships based on six plastidial and nuclear DNA sequences.
[So] Source:Mol Phylogenet Evol;118:244-264, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The carnivorous plant genus Utricularia L. (bladderwort) comprises about 240 species distributed worldwide and is traditionally classified into two subgenera (Polypompholyx and Utricularia) and 35 sections, based mainly on general and trap morphology. It is one out of the largest carnivorous genera, representing ca. 30% of all carnivorous plant species, and is also the most widely distributed. According to previous phylogenetic studies, most infrageneric sections are monophyletic, but there are several incongruences considering their relationships and also the dissenting position of some species as a result of a too few (mostly one or two) molecular markers analyzed. Thus, here we present a multilocus phylogeny for Utricularia species with a wide taxonomic sampling (78 species and 115 accessions) based on six plastid (rbcL, matK, rpl20-rps12, rps16, trnL-F) and nuclear DNA (ITS region) sequences. The aim is to reconstruct a well-resolved tree to propose evolutionary and biogeographic hypotheses for the radiation of lineages with inferences about the divergence times of clades using a molecular clock approach.
[Mh] Termos MeSH primário: DNA de Plantas/química
Lamiales/genética
Plastídeos/genética
[Mh] Termos MeSH secundário: Sequência de Bases
Teorema de Bayes
Evolução Biológica
Núcleo Celular/genética
DNA de Plantas/isolamento & purificação
DNA de Plantas/metabolismo
Lamiales/classificação
Filogenia
Proteínas de Plantas/classificação
Proteínas de Plantas/genética
Proteínas de Plantas/metabolismo
Ribulose-Bifosfato Carboxilase/classificação
Ribulose-Bifosfato Carboxilase/genética
Ribulose-Bifosfato Carboxilase/metabolismo
Alinhamento de Sequência
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant); 0 (Plant Proteins); EC 4.1.1.39 (RbcL protein, plastid); EC 4.1.1.39 (Ribulose-Bisphosphate Carboxylase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171022
[St] Status:MEDLINE


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[PMID]:29017853
[Au] Autor:Danderson CA; Downie SR; Hermann M
[Ad] Endereço:Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. Electronic address: cdanders@aum.edu.
[Ti] Título:Rampant polyphyly in the Arracacia clade (Apiaceae) and an assessment of the phylogenetic utility of 20 noncoding plastid loci.
[So] Source:Mol Phylogenet Evol;118:286-305, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Arracacia clade (Apiaceae, Apioideae) is a heterogeneous assemblage of 12 genera, comprising 111 known species distributed in high montane temperate and sub-alpine habitats of meso- and South America. Previous studies have indicated that the genera Arracacia, Coulterophytum, and Prionosciadium are polyphyletic, but for the most part relationships among the members of the clade are largely unknown. Initially, cladistic analyses of nrDNA ITS sequences were carried out on 212 accessions (122 taxa), representing 92 species of the Arracacia clade and outgroups from the closely-related páramo genera Cotopaxia, Niphogeton, and Perissocoeleum and members of the Perennial Endemic North American clade and its allies. Using the ITS results to inform sampling of a small subset of taxa, a pilot study examining the phylogenetic utility of 20 noncoding chloroplast loci was subsequently performed to identify those regions most useful at resolving relationships. A cost-benefit analysis determined that five loci (trnQ-5'rps16, trnD-trnT, rpl32-trnL, psbD-trnT, ndhA intron) would maximize resolution and branch support in the clade. Cladistic analyses of four of these loci (trnQ-5'rps16, trnD-trnT, rpl32-trnL, ndhA intron) and the ITS region, separately and combined, revealed that Arracacia, Coaxana, Coulterophytum, Prionosciadium, and Rhodosciadium are each polyphyletic and that Donnellsmithia and Myrrhidendron are each monophyletic. Although most relationships in the Arracacia clade and among the closely-related genera Cotopaxia, Niphogeton, and Perissocoeleum are poorly resolved and supported, ten groups are recognized for future revisionary studies. Polyploidy and rapid species radiation have likely confounded generic circumscriptions and interpretation of relationships.
[Mh] Termos MeSH primário: Apiaceae/classificação
[Mh] Termos MeSH secundário: Apiaceae/genética
Sequência de Bases
Teorema de Bayes
Núcleo Celular/genética
DNA de Cloroplastos/química
DNA de Cloroplastos/isolamento & purificação
DNA de Cloroplastos/metabolismo
Loci Gênicos
Íntrons
Filogenia
Plastídeos/genética
Alinhamento de Sequência
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Chloroplast)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171012
[St] Status:MEDLINE


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[PMID]:28951191
[Au] Autor:Zhang L; Zhang LB
[Ad] Endereço:Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, PR China; Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, PR China.
[Ti] Título:Phylogeny and systematics of the brake fern genus Pteris (Pteridaceae) based on molecular (plastid and nuclear) and morphological evidence.
[So] Source:Mol Phylogenet Evol;118:265-285, 2018 Jan.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The brake fern genus Pteris belongs to Pteridaceae subfamily Pteridoideae. It is one of the largest fern genera and has been estimated to contain 200-250 species distributed on all continents except Antarctica. Previous studies were either based on plastid data only or based on both plastid and nuclear data but the sampling was small. In addition, an infrageneric classification of Pteris based on morphological and molecular evidence has not been available yet. In the present study, based on molecular data of eight plastid markers and one nuclear marker (gapCp) of 256 accessions representing ca. 178 species of Pteris, we reconstruct a global phylogeny of Pteris. The 15 major clades identified earlier are recovered here and we further identified a new major clade. Our nuclear phylogeny recovered 11 of these 16 major clades, seven of which are strongly supported. The inclusion of Schizostege in Pteris is confirmed for the first time. Based on the newly reconstructed phylogeny and evidence from morphology, distribution and/or ecology, we classify Pteris into three subgenera: P. subg. Pteris, P. subg. Campteria, and P. subg. Platyzoma. The former two are further divided into three and 12 sections, respectively.
[Mh] Termos MeSH primário: Pteridaceae/classificação
[Mh] Termos MeSH secundário: Regiões Antárticas
Composição de Bases
Sequência de Bases
Núcleo Celular/genética
Filogenia
Proteínas de Plantas/classificação
Proteínas de Plantas/genética
Proteínas de Plantas/metabolismo
Plastídeos/classificação
Plastídeos/genética
Pteridaceae/genética
Alinhamento de Sequência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170928
[St] Status:MEDLINE


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[PMID]:29298981
[Au] Autor:Díaz MG; Hernández-Verdeja T; Kremnev D; Crawford T; Dubreuil C; Strand Å
[Ad] Endereço:Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE-901 87, Umeå, Sweden.
[Ti] Título:Redox regulation of PEP activity during seedling establishment in Arabidopsis thaliana.
[So] Source:Nat Commun;9(1):50, 2018 01 03.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Activation of the plastid-encoded RNA polymerase is tightly controlled and involves a network of phosphorylation and, as yet unidentified, thiol-mediated events. Here, we characterize PLASTID REDOX INSENSITIVE2, a redox-regulated protein required for full PEP-driven transcription. PRIN2 dimers can be reduced into the active monomeric form by thioredoxins through reduction of a disulfide bond. Exposure to light increases the ratio between the monomeric and dimeric forms of PRIN2. Complementation of prin2-2 with different PRIN2 protein variants demonstrates that the monomer is required for light-activated PEP-dependent transcription and that expression of the nuclear-encoded photosynthesis genes is linked to the activity of PEP. Activation of PEP during chloroplast development likely is the source of a retrograde signal that promotes nuclear LHCB expression. Thus, regulation of PRIN2 is the thiol-mediated mechanism required for full PEP activity, with PRIN2 monomerization via reduction by TRXs providing a mechanistic link between photosynthetic electron transport and activation of photosynthetic gene expression.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/metabolismo
Arabidopsis/enzimologia
Tiorredoxinas de Cloroplastos/metabolismo
Peptídeos e Proteínas de Sinalização Intracelular/metabolismo
Plântulas/enzimologia
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Transporte de Elétrons
Fotossíntese
Plastídeos/metabolismo
Transcrição Genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Chloroplast Thioredoxins); 0 (Intracellular Signaling Peptides and Proteins); 0 (PRIN2 protein, Arabidopsis); 0 (thioredoxin z, Arabidopsis)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180105
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02468-2


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[PMID]:28743642
[Au] Autor:Zuo YJ; Wen J; Zhou SL
[Ad] Endereço:State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences; Shanghai Chenshan Botanical Garden, Shanghai 201602, China.
[Ti] Título:Intercontinental and intracontinental biogeography of the eastern Asian - Eastern North American disjunct Panax (the ginseng genus, Araliaceae), emphasizing its diversification processes in eastern Asia.
[So] Source:Mol Phylogenet Evol;117:60-74, 2017 Dec.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The intercontinental biogeography between eastern Asia and eastern North America has attracted much attention from evolutionary biologists. Further insights into understanding the evolution of the intercontinental disjunctions have been hampered by the lack of studies on the intracontinental biogeography in eastern Asia, a region with complex geology, geography, climates and habitats. Herein we studied the biogeographic history of the eastern Asian-eastern North American disjunct genus Panax with special emphasis on the investigation of its uneven diversification in Asia. This study reconstructs the diversification history of Panax and also emphasizes a large clade of Panax taxa, which has a wide distribution in eastern Asia, but was unresolved in previous studies. We examined the noncoding plastid DNA fragments of trnH-psbA, rps16, and psbM-trnD, the mitochondrial b/c intron of NAD1, and the nuclear ribosomal internal transcribed spacer (ITS) region of 356 samples from 47 populations. The results revealed the subtropical Northern Hemisphere origin (Asia or Asia and North America) of Panax in the Paleocene. Intercontinental disjunctions between eastern Asia and eastern North America formed twice in Panax, once estimated in early Eocene for the split of P. trifolius and another in mid-Miocene for the divergence of P. quinquefolius. Intercontinental diversifications in Panax showed temporal correlation with the increase of global temperature. The evolutionary radiation of the P. bipinnatifidus species complex occurred around the boundary of Oligocene and Miocene. Strong genetic structure among populations of the species complex was detected and the populations may be isolated by distance. The backbone network and the Bayesian clustering analysis revealed a major evolutionary radiation centered in the Hengduan Mountains of western China. Our results suggested that the evolutionary radiation of Panax was promoted by geographic barriers, including mountain ranges (Hengduan Mountains, Nanling Mountains and Wuyishan Mountains), oceans and altitudinal shifts, which further contribute to the knowledge of the uneven species diversification between eastern Asia and North America.
[Mh] Termos MeSH primário: Panax/genética
Filogenia
Filogeografia
[Mh] Termos MeSH secundário: Teorema de Bayes
Biodiversidade
Extremo Oriente
Genes Mitocondriais/genética
América do Norte
Panax/classificação
Plastídeos/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170727
[St] Status:MEDLINE


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[PMID]:29023459
[Au] Autor:Park SY; Scranton MA; Stajich JE; Yee A; Walling LL
[Ad] Endereço:Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California, Riverside, California, United States of America.
[Ti] Título:Chlorophyte aspartyl aminopeptidases: Ancient origins, expanded families, new locations, and secondary functions.
[So] Source:PLoS One;12(10):e0185492, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:M18 aspartyl aminopeptidases (DAPs) are well characterized in microbes and animals with likely functions in peptide processing and vesicle trafficking. In contrast, there is a dearth of knowledge on plant aminopeptidases with a preference for proteins and peptides with N-terminal acidic residues. During evolution of the Plantae, there was an expansion and diversification of the M18 DAPs. After divergence of the ancestral green algae from red and glaucophyte algae, a duplication yielded the DAP1 and DAP2 lineages. Subsequently DAP1 genes were lost in chlorophyte algae. A duplication of DAP2-related genes occurred early in green plant evolution. DAP2 genes were retained in land plants and picoeukaryotic algae and lost in green algae. In contrast, DAP2-like genes persisted in picoeukaryotic and green algae, while this lineage was lost in land plants. Consistent with this evolutionary path, Arabidopsis thaliana has two DAP gene lineages (AtDAP1 and AtDAP2). Similar to animal and yeast DAPs, AtDAP1 is localized to the cytosol or vacuole; while AtDAP2 harbors an N-terminal transit peptide and is chloroplast localized. His6-DAP1 and His6-DAP2 expressed in Escherichia coli were enzymatically active and dodecameric with masses exceeding 600 kDa. His6-DAP1 and His6-DAP2 preferentially hydrolyzed Asp-p-nitroanilide and Glu-p-nitroanilide. AtDAPs are highly conserved metallopeptidases activated by MnCl2 and inhibited by ZnCl2 and divalent ion chelators. The protease inhibitor PMSF inhibited and DTT stimulated both His6-DAP1 and His6-DAP2 activities suggesting a role for thiols in the AtDAP catalytic mechanism. The enzymes had distinct pH and temperature optima, as well as distinct kinetic parameters. Both enzymes had high catalytic efficiencies (kcat/Km) exceeding 1.0 x 107 M-1 sec-1. Using established molecular chaperone assays, AtDAP1 and AtDAP2 prevented thermal denaturation. AtDAP1 also prevented protein aggregation and promoted protein refolding. Collectively, these data indicate that plant DAPs have a complex evolutionary history and have evolved new biochemical features that may enable their role in vivo.
[Mh] Termos MeSH primário: Arabidopsis/enzimologia
Clorófitas/enzimologia
Cloroplastos/enzimologia
Glutamil Aminopeptidase/metabolismo
Chaperonas Moleculares
Família Multigênica
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Bases de Dados de Proteínas
Evolução Molecular
Filogenia
Plastídeos/enzimologia
Selaginellaceae/enzimologia
Alinhamento de Sequência
Especificidade por Substrato
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Molecular Chaperones); EC 3.4.11.7 (Glutamyl Aminopeptidase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171013
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185492


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[PMID]:28710127
[Au] Autor:Zimmerman E; Herendeen PS; Lewis GP; Bruneau A
[Ad] Endereço:Institut de Recherche en Biologie Végétale and Département de Sciences Biologiques, Université de Montréal, 4101 rue Sherbrooke Est, Montréal, Québec, H1X 2B2, Canada erin.zimmerman@umontreal.ca.
[Ti] Título:Floral evolution and phylogeny of the Dialioideae, a diverse subfamily of tropical legumes.
[So] Source:Am J Bot;104(7):1019-1041, 2017 Jul.
[Is] ISSN:1537-2197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PREMISE OF THE STUDY: The Dialioideae is an early diverging clade of caesalpinioid legumes containing approximately 85 species in 17 genera. Dialioideae floral morphology is highly variable and may provide clues to caesalpinioid evolution, but a well-resolved phylogeny is needed. Here, we have carried out a comprehensive morphological study of 78 Dialioideae and four outgroup species. METHODS: For all available Dialioideae DNA samples, the plastid and introns were sequenced. A combined phylogenetic analysis using the parsimony criterion was completed on a reduced taxon set for which both molecular and morphological data were available. Highly supported clades from the strict consensus tree of this analysis were then used to constrain the nodes of a second analysis on an expanded taxon set with missing molecular data for some taxa. KEY RESULTS: Several new, highly supported relationships have been discovered at the species and genus levels. The loss of the antepetalous stamen whorl was found to be a synapomorphy for most of the clade. CONCLUSIONS: A high degree of organ loss is common in the Dialioideae and often results in a bilaterally symmetrical flower. The absence of consistent morphological features in the Dialioideae, coupled with the small size of each florally diagnosed genus, suggests a lack of canalization in the floral evolution in early diverging legume lineages.
[Mh] Termos MeSH primário: Evolução Biológica
Fabaceae/genética
Flores/genética
Filogenia
[Mh] Termos MeSH secundário: DNA de Plantas/genética
Flores/anatomia & histologia
Íntrons
Plastídeos/genética
Análise de Sequência de DNA
Clima Tropical
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170716
[St] Status:MEDLINE
[do] DOI:10.3732/ajb.1600436


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[PMID]:28630009
[Au] Autor:Buchensky C; Sánchez M; Carrillo M; Palacios O; Capdevila M; Domínguez-Vera JM; Busi MV; Atrian S; Pagani MA; Gomez-Casati DF
[Ad] Endereço:CEFOBI - CONICET, Centro de Estudios Fotosintéticos y Bioquímicos - Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Santa Fe, Argentina.
[Ti] Título:Identification of two frataxin isoforms in Zea mays: Structural and functional studies.
[So] Source:Biochimie;140:34-47, 2017 Sep.
[Is] ISSN:1638-6183
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:Frataxin is a ubiquitous protein that plays a role in Fe-S cluster biosynthesis and iron and heme metabolism, although its molecular functions are not entirely clear. In non-photosynthetic eukaryotes, frataxin is encoded by a single gene, and the protein localizes to mitochondria. Here we report the presence of two functional frataxin isoforms in Zea mays, ZmFH-1 and ZmFH-2. We confirmed our previous findings regarding plant frataxins: both proteins have dual localization in mitochondria and chloroplasts. Physiological, biochemical and biophysical studies show some differences in the expression pattern, protection against oxidants and in the aggregation state of both isoforms, suggesting that the two frataxin homologs would play similar but not identical roles in plant cell metabolism. In addition, two specific features of plant frataxins were evidenced: their ability to form dimers and their tendency to undergo conformational change under oxygen exposure.
[Mh] Termos MeSH primário: Proteínas de Cloroplastos
Regulação da Expressão Gênica de Plantas/fisiologia
Proteínas de Ligação ao Ferro
Mitocôndrias
Proteínas Mitocondriais
Plastídeos
Zea mays
[Mh] Termos MeSH secundário: Proteínas de Cloroplastos/biossíntese
Proteínas de Cloroplastos/genética
Proteínas de Ligação ao Ferro/biossíntese
Proteínas de Ligação ao Ferro/genética
Mitocôndrias/genética
Mitocôndrias/metabolismo
Proteínas Mitocondriais/biossíntese
Proteínas Mitocondriais/genética
Plastídeos/genética
Plastídeos/metabolismo
Isoformas de Proteínas
Zea mays/genética
Zea mays/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chloroplast Proteins); 0 (Iron-Binding Proteins); 0 (Mitochondrial Proteins); 0 (Protein Isoforms); 0 (frataxin)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE


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[PMID]:28601077
[Au] Autor:Yurina NP; Sharapova LS; Odintsova MS
[Ad] Endereço:Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia. nyurina@inbi.ras.ru.
[Ti] Título:Structure of Plastid Genomes of Photosynthetic Eukaryotes.
[So] Source:Biochemistry (Mosc);82(6):678-691, 2017 Jun.
[Is] ISSN:1608-3040
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This review presents current views on the plastid genomes of higher plants and summarizes data on the size, structural organization, gene content, and other features of plastid DNAs. Special emphasis is placed on the properties of organization of land plant plastid genomes (nucleoids) that distinguish them from bacterial genomes. The prospects of genetic engineering of chloroplast genomes are discussed.
[Mh] Termos MeSH primário: DNA de Plantas/genética
Genomas de Plastídeos
Plastídeos/genética
[Mh] Termos MeSH secundário: Engenharia Genética/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (DNA, Plant)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170621
[Lr] Data última revisão:
170621
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170612
[St] Status:MEDLINE
[do] DOI:10.1134/S0006297917060049



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