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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]:28400414
[Au] Autor:Chambers SM; Watkins JE; Sessa EB
[Ad] Endereço:University of Florida, Department of Biology, Gainesville, Florida, USA smstev2@ufl.edu.
[Ti] Título:Differences in dehydration tolerance among populations of a gametophyte-only fern.
[So] Source:Am J Bot;104(4):598-607, 2017 Apr.
[Is] ISSN:1537-2197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PREMISE OF THE STUDY: For many plant species, historical climatic conditions may have left lasting imprints that are detectable in contemporary populations. Additionally, if these historical conditions also prevented gene flow among populations, these populations may be differentiated with respect to one another and their contemporary environmental conditions. For the fern, , one theory is that historical conditions during the Pleistocene largely shaped both the distribution and lack of sporophyte production. Our goals-based on this theory-were to examine physiological differences among and within populations spanning the species' geographic range, and the contribution of historical climatic conditions to this differentiation. METHODS: We exposed explants from five populations to four drying treatments and examined differences in physiological response. Additionally, we examined the role of historical and current climatic conditions in driving the observed population differentiation. KEY RESULTS: Populations differ in their ability to tolerate varying levels of dehydration, displaying a pattern of countergradient selection. Exposure to historical and contemporary climatic conditions, specifically variation in temperature and precipitation regimes, resulted in population divergence observed among contemporary populations. CONCLUSIONS: Historical conditions have shaped not only the distribution of , but also its current physiological limitations. Results from this study support the hypothesis that climatic conditions during the Pleistocene are responsible for the distribution of this species, and may be responsible for the observed differences in dehydration tolerance. Additionally, dehydration tolerance may be the driving factor for previously reported patterns of countergradient selection in this species.
[Mh] Termos MeSH primário: Pteridaceae/fisiologia
[Mh] Termos MeSH secundário: Desidratação/fisiopatologia
Células Germinativas Vegetais/fisiologia
Reprodução/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170822
[Lr] Data última revisão:
170822
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170413
[St] Status:MEDLINE
[do] DOI:10.3732/ajb.1600279


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[PMID]:28049040
[Au] Autor:Zhang L; Zhou XM; Lu NT; 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, China.
[Ti] Título:Phylogeny of the fern subfamily Pteridoideae (Pteridaceae; Pteridophyta), with the description of a new genus: Gastoniella.
[So] Source:Mol Phylogenet Evol;109:59-72, 2017 Apr.
[Is] ISSN:1095-9513
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:As the second most genera-rich fern family, Pteridaceae contain more than 1000 species contributing to ca. 10% of extant leptosporangiate fern diversity. The subfamily Pteridoideae is one of the five subfamilies often recognized. The circumscription of Pteridoideae has not been clear. A large number of species have not yet been included in any molecular analyses before. In this study, DNA sequences of six plastid loci of 154 accessions representing ca. 87 species in 14 genera of Pteridaceae subfam. Pteridoideae and four accessions representing two species in subfam. Parkerioideae and one species of subfam. Adiantoideae as outgroups were used to infer a phylogeny using maximum likelihood and maximum parsimony. Our analyses show that (1) Pteridoideae is monophyletic and the newly defined subfamily is composed of 14 genera including a newly described genus; (2) Pteridoideae is resolved into four strongly supported monophyletic clades: the Pteris clade, the Actiniopteris+Onychium clade, the JAPSTT clade, and the GAPCC clade, these being supported by not only molecular data but also morphological features and distribution information; (3) Onychium is confirmed as monophyletic and accessions of Onychium are resolved into two strongly supported clades, the O. cryptogrammoides clade and the O. siliculosum clade; and (4) Accessions of the traditionally defined Anogramma are resolved as paraphyletic in relation to Cerosora, Cosentinica, and Pityrogramma. Three species traditionally treated in Anogramma are in fact more closely related to Cerosora and Pityrogramma than they are to Anogramma. Gastoniella Li Bing Zhang & Liang Zhang, gen. nov. is described to accommodate these species and three new combinations are provided. Three currently known species of Gastoniella are distributed in the Ascension Island in South Atlantic Ocean, central Mexico, and tropical America, respectively. The new genus is distinct from Anogramma s.s. in having ultimate segments linear not obviously broadening toward the upper portion.
[Mh] Termos MeSH primário: Pteridaceae/genética
[Mh] Termos MeSH secundário: Sequência de Bases
Genes de Plantas
Tipagem de Sequências Multilocus
Filogenia
Proteínas de Plantas/genética
Plastídeos/genética
Pteridaceae/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170609
[Lr] Data última revisão:
170609
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170104
[St] Status:MEDLINE


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[PMID]:28012123
[Au] Autor:Kuo LY; Chen CW; Shinohara W; Ebihara A; Kudoh H; Sato H; Huang YM; Chiou WL
[Ad] Endereço:Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, 10617, Taiwan, Republic of China.
[Ti] Título:Not only in the temperate zone: independent gametophytes of two vittarioid ferns (Pteridaceae, Polypodiales) in East Asian subtropics.
[So] Source:J Plant Res;130(2):255-262, 2017 Mar.
[Is] ISSN:1618-0860
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Independent gametophyte ferns are unique among vascular plants because they are sporophyteless and reproduce asexually to maintain their populations in the gametophyte generation. Such ferns had been primarily discovered in temperate zone, and usually hypothesized with (sub)tropical origins and subsequent extinction of sporophyte due to climate change during glaciations. Presumably, independent fern gametophytes are unlikely to be distributed in tropics and subtropics because of relatively stable climates which are less affected by glaciations. Nonetheless, the current study presents cases of two independent gametophyte fern species in subtropic East Asia. In this study, we applied plastid DNA sequences (trnL-L-F and matK + ndhF + chlL datasets) and comprehensive sampling (~80%) of congeneric species for molecular identification and divergence time estimation of these independent fern gametophytes. The two independent gametophyte ferns were found belonging to genus Haplopteris (vittarioids, Pteridaceae) and no genetic identical sporophyte species in East Asia. For one species, divergence times between its populations imply recent oversea dispersal(s) by spores occurred during Pleistocene. By examining their ex situ and in situ fertility, prezygotic sterility was found in these two Haplopteris, in which gametangia were not or very seldom observed, and this prezygotic sterility might attribute to their lacks of functional sporophytes. Our field observation and survey on their habitats suggest microhabitat conditions might attribute to this prezygotic sterility. These findings point to consideration of whether recent climate change during the Pleistocene glaciation resulted in ecophysiological maladaptation of non-temperate independent gametophyte ferns. In addition, we provided a new definition to classify fern gametophyte independences at the population level. We expect that continued investigations into tropical and subtropical fern gametophyte floras will further illustrate the biogeographic significance of non-temperate fern gametophyte independence.
[Mh] Termos MeSH primário: DNA de Plantas/genética
Plastídeos/genética
Pteridaceae/fisiologia
[Mh] Termos MeSH secundário: DNA de Plantas/metabolismo
Células Germinativas Vegetais/fisiologia
Japão
Plastídeos/metabolismo
Pteridaceae/genética
Análise de Sequência de DNA
Taiwan
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171014
[Lr] Data última revisão:
171014
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161225
[St] Status:MEDLINE
[do] DOI:10.1007/s10265-016-0897-x


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[PMID]:27492234
[Au] Autor:Zumkeller SM; Knoop V; Knie N
[Ad] Endereço:Abteilung Molekulare Evolution, IZMB-Institut Für Zelluläre Und Molekulare Botanik, Universität Bonn, Kirschallee 1, D-53115 Bonn, Germany.
[Ti] Título:Convergent Evolution of Fern-Specific Mitochondrial Group II Intron atp1i361g2 and Its Ancient Source Paralogue rps3i249g2 and Independent Losses of Intron and RNA Editing among Pteridaceae.
[So] Source:Genome Biol Evol;8(8):2505-19, 2016 Aug 29.
[Is] ISSN:1759-6653
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Mitochondrial intron patterns are highly divergent between the major land plant clades. An intron in the atp1 gene, atp1i361g2, is an example for a group II intron specific to monilophytes (ferns). Here, we report that atp1i361g2 is lost independently at least 4 times in the fern family Pteridaceae. Such plant organelle intron losses have previously been found to be accompanied by loss of RNA editing sites in the flanking exon regions as a consequence of genomic recombination of mature cDNA. Instead, we now observe that RNA editing events in both directions of pyrimidine exchange (C-to-U and U-to-C) are retained in atp1 exons after loss of the intron in Pteris argyraea/biaurita and in Actiniopteris and Onychium We find that atp1i361g2 has significant similarity with intron rps3i249g2 present in lycophytes and gymnosperms, which we now also find highly conserved in ferns. We conclude that atp1i361g2 may have originated from the more ancestral rps3i249g2 paralogue by a reverse splicing copy event early in the evolution of monilophytes. Secondary structure elements of the two introns, most characteristically their domains III, show strikingly convergent evolution in the monilophytes. Moreover, the intron paralogue rps3i249g2 reveals relaxed evolution in taxa where the atp1i361g2 paralogue is lost. Our findings may reflect convergent evolution of the two related mitochondrial introns exerted by co-evolution with an intron-binding protein simultaneously acting on the two paralogues.
[Mh] Termos MeSH primário: Evolução Molecular
Genes Mitocondriais
Genes de Plantas
Íntrons
Pteridaceae/genética
Edição de RNA
[Mh] Termos MeSH secundário: Filogenia
Pteridaceae/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170929
[Lr] Data última revisão:
170929
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160806
[St] Status:MEDLINE
[do] DOI:10.1093/gbe/evw173


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[PMID]:26853807
[Au] Autor:Campos NV; Araújo TO; Arcanjo-Silva S; Freitas-Silva L; Azevedo AA; Nunes-Nesi A
[Ad] Endereço:Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil.
[Ti] Título:Arsenic hyperaccumulation induces metabolic reprogramming in Pityrogramma calomelanos to reduce oxidative stress.
[So] Source:Physiol Plant;157(2):135-46, 2016 Jun.
[Is] ISSN:1399-3054
[Cp] País de publicação:Denmark
[La] Idioma:eng
[Ab] Resumo:Arsenic (As) pollution is a major environmental concern due to its worldwide distribution and high toxicity to organisms. The fern Pityrogramma calomelanos is one of the few plant species known to be able to hyperaccumulate As, although the mechanisms involved are largely unknown. This study aimed to investigate the metabolic adjustments involved in the As-tolerance of P. calomelanos. For this purpose, ferns with five to seven fronds were exposed to a series of As concentrations. Young fronds were used for biochemical analysis and metabolite profiling using gas chromatography-mass spectrometry. As treatment increased the total concentration of proteins and soluble phenols, enhanced peroxidase activities, and promoted disturbances in nitrogen and carbon metabolism. The reduction of the glucose pool was one of the striking responses to As. Remarkable changes in amino acids levels were observed in As-treated plants, including those related to biosynthesis of glutathione and phenols, osmoregulation and two photorespiratory intermediates. In addition, increases in polyamines levels and antioxidant enzyme activities were observed. In summary, this study indicates that P. calomelanos tolerates high concentration of As due to its capacity to upregulate biosynthesis of amino acids and antioxidants, without greatly disturbing central carbon metabolism. At extremely high As concentrations, however, this protective mechanism fails to block reactive oxygen species production, leading to lipid peroxidation and leaf necrosis.
[Mh] Termos MeSH primário: Arsênico/metabolismo
Pteridaceae/fisiologia
Estresse Fisiológico
[Mh] Termos MeSH secundário: Aminoácidos/biossíntese
Antioxidantes/metabolismo
Arsênico/toxicidade
Biodegradação Ambiental
Biomarcadores/metabolismo
Vias Biossintéticas/efeitos dos fármacos
Cromatografia Gasosa-Espectrometria de Massas
Estresse Oxidativo
Folhas de Planta/efeitos dos fármacos
Folhas de Planta/fisiologia
Pteridaceae/efeitos dos fármacos
Poluentes do Solo/metabolismo
Poluentes do Solo/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amino Acids); 0 (Antioxidants); 0 (Biomarkers); 0 (Soil Pollutants); N712M78A8G (Arsenic)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170201
[Lr] Data última revisão:
170201
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160209
[St] Status:MEDLINE
[do] DOI:10.1111/ppl.12426


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[PMID]:26739842
[Au] Autor:Lopez RA; Renzaglia KS
[Ad] Endereço:Department of Plant Biology, MC: 6509, Southern Illinois University Carbondale, Carbondale, IL, 62901, USA. rlsmith@siu.edu.
[Ti] Título:Arabinogalactan proteins and arabinan pectins abound in the specialized matrices surrounding female gametes of the fern Ceratopteris richardii.
[So] Source:Planta;243(4):947-57, 2016 Apr.
[Is] ISSN:1432-2048
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:MAIN CONCLUSION: Both male and female gametes of archegoniates are highly specialized cells surrounded by an extraprotoplasmic matrix rich in AGPs, which are speculated to facilitate development and gamete fusion through Ca 2+) oscillations. An additional layer, the egg envelope, forms around the egg periphery, except at the fertilization pore, and contains arabinose-rich polymers that presumably impart flexibility for the rapidly growing zygote and embryo. The abundant AGPs and arabinan pectins associated with the eggs of C. richardii not only are integral to development, fertilization, and early embryogenesis, but also may be involved in desiccation tolerance important to the survival of the reproductive gametophyte. A defining feature of gametogenesis in archegoniates is the deposition of a special matrix outside of the plasmalemma of both egg and sperm cells that displaces the primary cell wall away from the protoplasm. It is within this matrix that gamete differentiation occurs. In leptosporangiate ferns, maturation of the egg cell involves the deposition of a second specialized wall, the so-called egg envelope that surrounds the cell except at the fertilization pore, a narrow site where gamete fusion takes place. We provide the first conclusive evidence of the macromolecular constituents in the unique structures surrounding fern egg cells before and after fertilization. To test the hypotheses that the egg extracellular matrix contains arabinogalactan proteins (AGPs) as does the sperm cell matrix, and that cell wall polysaccharides, especially pectins, are components of the egg envelope, we examined the expression patterns of AGPs and cell wall constituents during oogenesis in Ceratopteris richardii. Utilizing histochemical stains for callose, cellulose and AGPs coupled with immunogold localizations employing a suite of monoclonal antibodies to cell wall components (JIM13, JIM8, LM2, LM5, LM6, LM19, LM20 and anticallose), we demonstrate that AGPs, but not pectins, are abundant in the matrix around egg cells and degrading neck canal and ventral canal cells during archegonial development. A striking finding is that both AGPs and (1,5)-α-L-arabinan pectin epitopes are principle components of the egg envelope before and after fertilization, suggesting that they are important in both egg maturation and gamete fusion.
[Mh] Termos MeSH primário: Mucoproteínas/análise
Óvulo Vegetal/química
Pectinas/metabolismo
Pteridaceae/química
[Mh] Termos MeSH secundário: Anticorpos Monoclonais/metabolismo
Parede Celular/química
Parede Celular/metabolismo
Epitopos
Matriz Extracelular/química
Matriz Extracelular/metabolismo
Glucanos/metabolismo
Microscopia Eletrônica de Transmissão
Mucoproteínas/imunologia
Mucoproteínas/metabolismo
Óvulo Vegetal/metabolismo
Pectinas/análise
Pectinas/imunologia
Proteínas de Plantas/análise
Proteínas de Plantas/imunologia
Proteínas de Plantas/metabolismo
Polissacarídeos/análise
Polissacarídeos/metabolismo
Pteridaceae/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Antibodies, Monoclonal); 0 (Epitopes); 0 (Glucans); 0 (Mucoproteins); 0 (Pectins); 0 (Plant Proteins); 0 (Polysaccharides); 0 (arabinogalactan proteins); 11078-27-6 (araban); 9064-51-1 (callose)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171005
[Lr] Data última revisão:
171005
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160108
[St] Status:MEDLINE
[do] DOI:10.1007/s00425-015-2448-4


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[PMID]:26444002
[Au] Autor:Poppinga S; Haushahn T; Warnke M; Masselter T; Speck T
[Ad] Endereço:Plant Biomechanics Group, University of Freiburg, Botanic Garden, Faculty of Biology, Freiburg im Breisgau, Germany; Freiburg Materials Research Center (FMF), University of Freiburg, Freiburg im Breisgau, Germany.
[Ti] Título:Sporangium Exposure and Spore Release in the Peruvian Maidenhair Fern (Adiantum peruvianum, Pteridaceae).
[So] Source:PLoS One;10(10):e0138495, 2015.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:We investigated the different processes involved in spore liberation in the polypod fern Adiantum peruvianum (Pteridaceae). Sporangia are being produced on the undersides of so-called false indusia, which are situated at the abaxial surface of the pinnule margins, and become exposed by a desiccation-induced movement of these pinnule flaps. The complex folding kinematics and functional morphology of false indusia are being described, and we discuss scenarios of movement initiation and passive hydraulic actuation of these structures. High-speed cinematography allowed for analyses of fast sporangium motion and for tracking ejected spores. Separation and liberation of spores from the sporangia are induced by relaxation of the annulus (the 'throwing arm' of the sporangium catapult) and conservation of momentum generated during this process, which leads to sporangium bouncing. The ultra-lightweight spores travel through air with a maximum velocity of ~5 m s(-1), and a launch acceleration of ~6300 g is measured. In some cases, the whole sporangium, or parts of it, together with contained spores break away from the false indusium and are shed as a whole. Also, spores can stick together and form spore clumps. Both findings are discussed in the context of wind dispersal.
[Mh] Termos MeSH primário: Adiantum/fisiologia
Gleiquênias/fisiologia
Pteridaceae/fisiologia
Esporângios/fisiologia
Esporos/fisiologia
[Mh] Termos MeSH secundário: Movimento/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1606
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151008
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0138495


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[PMID]:26408808
[Au] Autor:Campos NV; Arcanjo-Silva S; Viana IB; Batista BL; Barbosa F; Loureiro ME; Ribeiro C; Azevedo AA
[Ad] Endereço:Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, MG, Brazil.
[Ti] Título:Arsenic-induced responses in Pityrogramma calomelanos (L.) Link: Arsenic speciation, mineral nutrition and antioxidant defenses.
[So] Source:Plant Physiol Biochem;97:28-35, 2015 Dec.
[Is] ISSN:1873-2690
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:Arsenic (As) hyperaccumulation trait has been described in a limited number of fern species. The physiological basis of hyperaccumulation remains unclear, especially in non-Pteris species such as Pityrogramma calomelanos. Aiming at a better understanding of As-induced responses, P. calomelanos plants were exposed to 1 mM As for 21 days and compared with control plants. Chemical analyses revealed that As accumulation was ten times higher in pinnae then in roots and stipes. In pinnae, As was present mainly as arsenite, whereas arsenate was the dominant form in stipes and roots. Arsenic promoted an increase in antioxidant enzyme activities in both fern parts and several alterations in mineral nutrition, especially with regard to P and K. A higher content of non-protein thiols was observed in pinnae of plants exposed to As, whereas As induced the increase in lipid peroxidation in roots. The results showed that Pityrogramma calomelanos shares with Pteris vittata several aspects of As metabolism. High root-shoot As translocation showed to be essential to avoid toxic effects in roots, since the root is more sensitive to the metalloid. The higher capacity of P. calomelanos to sequester arsenite in the pinna and its efficient antioxidant system maintain the reactive oxygen species at a low level, thus enhancing the continuous accumulation of As. Molecular investigations are needed to elucidate the evolution of As-tolerance mechanisms in Pteridaceae species, especially with regard to membrane transporters and ROS signaling.
[Mh] Termos MeSH primário: Antioxidantes/metabolismo
Arsênico/metabolismo
Minerais/metabolismo
Pteridaceae/metabolismo
[Mh] Termos MeSH secundário: Arseniatos/análise
Arseniatos/metabolismo
Arsênico/análise
Arsenitos/análise
Arsenitos/metabolismo
Raízes de Plantas/efeitos dos fármacos
Raízes de Plantas/metabolismo
Pteridaceae/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antioxidants); 0 (Arsenates); 0 (Arsenites); 0 (Minerals); N5509X556J (arsenite); N712M78A8G (Arsenic); N7CIZ75ZPN (arsenic acid)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:161020
[Lr] Data última revisão:
161020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150927
[St] Status:MEDLINE


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[PMID]:25981777
[Au] Autor:Cannon AE; Salmi ML; Bushart TJ; Roux SJ
[Ad] Endereço:Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA.
[Ti] Título:Studying molecular changes during gravity perception and response in a single cell.
[So] Source:Methods Mol Biol;1309:199-207, 2015.
[Is] ISSN:1940-6029
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Early studies revealed a highly predictable pattern of gravity-directed growth and development in Ceratopteris richardii spores. This makes the spores a valuable model system for the study of how a single cell senses and responds to the force of gravity. Gravity regulates both the direction and magnitude of a trans-cell calcium current in germinating spores, and the orientation of this current predicts the polarization of spore development. Molecular techniques have been developed to evaluate the transcriptomic and proteomic profiles of spores before and after gravity establishes the polarity of their development. Here we describe these techniques, along with protocols for sterilizing the spores, sowing them in a solid or liquid growth media, and evaluating germination.
[Mh] Termos MeSH primário: Proteômica
Pteridaceae/crescimento & desenvolvimento
Análise de Célula Única/métodos
Esporos/genética
[Mh] Termos MeSH secundário: Cálcio/metabolismo
Núcleo Celular/metabolismo
Polaridade Celular/genética
Gravitação
Sensação Gravitacional
Pteridaceae/genética
Esporos/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
SY7Q814VUP (Calcium)
[Em] Mês de entrada:1602
[Cu] Atualização por classe:150518
[Lr] Data última revisão:
150518
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150519
[St] Status:MEDLINE
[do] DOI:10.1007/978-1-4939-2697-8_15



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