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Bryophytes

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https://www.readbyqxmd.com/read/28079939/functional-ecology-of-cryptogams-scaling-from-bryophyte-lichen-and-soil-crust-traits-to-ecosystem-processes
#1
Kirsten K Deane-Coe, Daniel Stanton
No abstract text is available yet for this article.
February 2017: New Phytologist
https://www.readbyqxmd.com/read/28053893/bryophytes-hoard-of-remedies-an-ethno-medicinal-review
#2
REVIEW
Satish Chandra, Dinesh Chandra, Anupam Barh, Pankaj, Raj Kumar Pandey, Ishwar Prakash Sharma
Bryophytes are the second largest group of land plants after angiosperms. There is very less knowledge available about medicinal properties of these plants. Bryophytes are popular remedy among the tribal people of different parts of the world. Tribal people use these plants to cure various ailments in their daily lives. Bryophytes are used to cure hepatic disorders, skin diseases, cardiovascular diseases, used as antipyretic, antimicrobial, wound healing and many more other ailments by different tribal communities of Africa, America, Europe, Poland, Argentina, Australia, New Zealand, Turkey, Japan, Taiwan, Pakistan, China, Nepal and different parts of South, North and Eastern India...
January 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28018410/molecular-evolution-and-expression-divergence-of-the-aconitase-aco-gene-family-in-land-plants
#3
Yi-Ming Wang, Qi Yang, Yan-Jing Liu, Hai-Ling Yang
Aconitase (ACO) is a key enzyme that catalyzes the isomerization of citrate to isocitrate in the tricarboxylic acid (TCA) and glyoxylate cycles. The function of ACOs has been well studied in model plants, such as Arabidopsis. In contrast, the evolutionary patterns of the ACO family in land plants are poorly understood. In this study, we systematically examined the molecular evolution and expression divergence of the ACO gene family in 12 land plant species. Thirty-six ACO genes were identified from the 12 land plant species representing the four major land plant lineages: Bryophytes, lycophytes, gymnosperms, and angiosperms...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28011869/pcom-db-update-a-protein-co-migration-database-for-photosynthetic-organisms
#4
Atsushi Takabayashi, Saeka Takabayashi, Kaori Takahashi, Mai Watanabe, Hiroko Uchida, Akio Murakami, Tomomichi Fujita, Masahiko Ikeuchi, Ayumi Tanaka
The identification of protein complexes is important to understand protein structure and function, and the regulation of cellular processes. We used blue-native PAGE and tandem mass spectrometry to identify protein complexes systematically, and built a web database, the protein co-migration database (PCoM-DB, http://pcomdb.lowtem.hokudai.ac.jp/proteins/top), to provide prediction tools for protein complexes. PCoM-DB provides migration profiles for any given protein of interest, and allows users to compare them with migration profiles of other proteins, showing the oligomeric states of proteins and thus identifying potential interaction partners...
December 22, 2016: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28011112/the-artificial-and-natural-isotopes-distribution-in-sedge-carex-l-biomass-from-the-yenisei-river-flood-plain-adaptation-of-the-sequential-elution-technique
#5
Marya Kropacheva, Mikhail Melgunov, Irina Makarova
The study of migration pathways of artificial isotopes in the flood-plain biogeocoenoses, impacted by the nuclear fuel cycle plants, requires determination of isotope speciations in the biomass of higher terrestrial plants. The optimal method for their determination is the sequential elution technique (SET). The technique was originally developed to study atmospheric pollution by metals and has been applied to lichens, terrestrial and aquatic bryophytes. Due to morphological and physiological differences, it was necessary to adapt SET for new objects: coastal macrophytes growing on the banks of the Yenisei flood-plain islands in the near impact zone of Krasnoyarsk Mining and Chemical Combine (KMCC)...
February 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28007566/by-how-much-do-we-underestimate-species-diversity-of-liverworts-using-morphological-evidence-an-example-from-australasian-plagiochila-plagiochilaceae-jungermanniopsida
#6
Matt A M Renner, Margaret M Heslewood, Simon D F Patzak, Alfons Schäfer-Verwimp, Jochen Heinrichs
As a framework for revisionary study of the leafy liverwort Plagiochila in Australia, two methods for species delimitation on molecular sequence data, General Mixed Yule Coalescence model (GMYC) and Automatic Barcode Gap Discovery (ABGD) were applied to a dataset including 265 individuals from Australia, New Zealand, and the Pacific. Groups returned by GMYC and ABGD were incongruent in some lineages, and ABGD tended to lump groups. This may reflect underlying heterogeneity in the history of diversification within different lineages of Plagiochila...
December 19, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27992818/historical-peat-loss-explains-limited-short-term-response-of-drained-blanket-bogs-to-rewetting
#7
Jennifer Williamson, Edwin Rowe, David Reed, Lucia Ruffino, Peter Jones, Rachel Dolan, Helen Buckingham, David Norris, Shaun Astbury, Chris D Evans
This study assessed the short-term impacts of ditch blocking on water table depth and vegetation community structure in a historically drained blanket bog. A chronosequence approach was used to compare vegetation near ditches blocked 5 years, 4 years and 1 year prior to the study with vegetation near unblocked ditches. Plots adjacent to and 3 m away from 70 ditches within an area of blanket bog were assessed for floristic composition, aeration depth using steel bars, and topography using LiDAR data. No changes in aeration depth or vegetation parameters were detected as a function of ditch-blocking, time since blocking, or distance from the ditch, with the exception of non-Sphagnum bryophytes which had lower cover in quadrats adjacent to ditches that had been blocked for 5 years...
March 1, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/27933331/characterization-of-arsenic-biotransformation-by-a-typical-bryophyte-physcomitrella-patens
#8
Xixiang Yin, Lihong Wang, Yifei Liu, Tenglong Jiang, Jianwei Gao
Arsenic (As) is a ubiquitous environmental toxin that has created catastrophic human health and environmental problems around world. Physcomitrella patens is a potential model plant for the study of environmental monitoring, which exists in all kinds of ecosystems. In this study, arsenic metabolism was investigated by this moss. When supplied with different levels of arsenate (50, 100, 200 µmol/L) for a 4-week period, the total arsenic concentrations were up to 231.4-565.4 mg/kg DW in this moss. Arsenite concentration increased with increasing external arsenate concentrations, the proportion was up to 25...
December 8, 2016: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27923130/plant-evo-devo-how-tip-growth-evolved
#9
Stefan A Rensing
Apical elongation of polarized plant cells (tip growth) occurs in root hairs of flowering plants and in rhizoids of bryophytes. A new report shows that the formation of these cells relies on genes already present in the first land plants.
December 5, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27920791/extending-a-single-residue-switch-for-abbreviating-catalysis-in-plant-ent-kaurene-synthases
#10
Meirong Jia, Reuben J Peters
Production of ent-kaurene as a precursor for important signaling molecules such as the gibberellins seems to have arisen early in plant evolution, with corresponding cyclase(s) present in all land plants (i.e., embryophyta). The relevant enzymes seem to represent fusion of the class II diterpene cyclase that produces the intermediate ent-copalyl diphosphate (ent-CPP) and the subsequently acting class I diterpene synthase that produces ent-kaurene, although the bifunctionality of the ancestral gene is only retained in certain early diverging plants, with gene duplication and sub-functionalization leading to distinct ent-CPP synthases and ent-kaurene synthases (KSs) generally observed...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27896464/a-hypergravity-environment-increases-chloroplast-size-photosynthesis-and-plant-growth-in-the-moss-physcomitrella-patens
#11
Kaori Takemura, Hiroyuki Kamachi, Atsushi Kume, Tomomichi Fujita, Ichirou Karahara, Yuko T Hanba
The physiological and anatomical responses of bryophytes to altered gravity conditions will provide crucial information for estimating how plant physiological traits have evolved to adapt to significant increases in the effects of gravity in land plant history. We quantified changes in plant growth and photosynthesis in the model plant of mosses, Physcomitrella patens, grown under a hypergravity environment for 25 days or 8 weeks using a custom-built centrifuge equipped with a lighting system. This is the first study to examine the response of bryophytes to hypergravity conditions...
January 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/27895654/a-comprehensive-phylogeny-reveals-functional-conservation-of-the-uv-b-photoreceptor-uvr8-from-green-algae-to-higher-plants
#12
María B Fernández, Vanesa Tossi, Lorenzo Lamattina, Raúl Cassia
Ultraviolet-B (UV-B) is present in sunlight (280-315 nm) and has diverse effects on living organisms. Low fluence rate of exposure induces a specific photomorphogenic response regulated by the UV-B response locus 8 (UVR8) receptor. UVR8 was first described in Arabidopsis thaliana. In the absence of stimuli it is located in the cytoplasm as a homodimer. However, upon UV-B irradiation, it switches to a monomer and interacts with the ubiquitin ligase E3 COP1 via the UVR8 β-propeller domain and the VP core. This induces the expression of the transcription factor HY5 leading to changes in the expression of genes associated with UV-B acclimation and stress tolerance...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27886385/nonreciprocal-complementation-of-knox-gene-function-in-land-plants
#13
Eftychios Frangedakis, Denis Saint-Marcoux, Laura A Moody, Ester Rabbinowitsch, Jane A Langdale
Class I KNOTTED-LIKE HOMEOBOX (KNOX) proteins regulate development of the multicellular diploid sporophyte in both mosses and flowering plants; however, the morphological context in which they function differs. In order to determine how Class I KNOX function was modified as land plants evolved, phylogenetic analyses and cross-species complementation assays were performed. Our data reveal that a duplication within the charophyte sister group to land plants led to distinct Class I and Class II KNOX gene families...
November 25, 2016: New Phytologist
https://www.readbyqxmd.com/read/27883193/auxin-transport-in-the-evolution-of-branching-forms
#14
REVIEW
C Jill Harrison
I. II. III. IV. V. VI. VII. Acknowledgements References SUMMARY: Branching is one of the most striking aspects of land plant architecture, affecting resource acquisition and yield. Polar auxin transport by PIN proteins is a primary determinant of flowering plant branching patterns regulating both branch initiation and branch outgrowth. Several lines of experimental evidence suggest that PIN-mediated polar auxin transport is a conserved regulator of branching in vascular plant sporophytes. However, the mechanisms of branching and auxin transport and relationships between the two are not well known outside the flowering plants, and the paradigm for PIN-regulated branching in flowering plants does not fit bryophyte gametophytes...
November 24, 2016: New Phytologist
https://www.readbyqxmd.com/read/27882647/host-and-tissue-variation-overshadow-the-response-of-boreal-moss-associated-fungal-communities-to-increased-nitrogen-load
#15
Marie L Davey, Marte J Skogen, Einar Heegaard, Rune Halvorsen, Håvard Kauserud, Mikael Ohlson
Human activity has more than doubled the amount of nitrogen entering the global nitrogen cycle, and the boreal forest biome is a nitrogen-limited ecosystem sensitive to nitrogen load perturbation. Although bryophyte-associated microbes contribute significantly to boreal forest ecosystem function, particularly in carbon and nitrogen cycling, little is known about their responses to anthropogenic global change. Amplicon pyrosequencing of the ITS2 region of rDNA was used to investigate how fungal communities associated with three bryophyte species responded to increased nitrogen loads in a long-term fertilization experiment in a boreal Picea abies forest in southern Norway...
November 24, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27861610/the-chloroplast-srp-systems-of-chaetosphaeridium-globosum-and-physcomitrella-patens-as-intermediates-in-the-evolution-of-srp-dependent-protein-transport-in-higher-plants
#16
Dominik Ziehe, Beatrix Dünschede, Mira Zenker, Silke Funke, Marc M Nowaczyk, Danja Schünemann
The bacterial signal recognition particle (SRP) mediates the cotranslational targeting of membrane proteins and is a high affinity complex consisting of a SRP54 protein subunit (Ffh) and an SRP RNA. The chloroplast SRP (cpSRP) pathway has adapted throughout evolution to enable the posttranslational targeting of the light harvesting chlorophyll a/b binding proteins (LHCPs) to the thylakoid membrane. In spermatophytes (seed plants), the cpSRP lacks the SRP RNA and is instead formed by a high affinity interaction of the conserved 54-kD subunit (cpSRP54) with the chloroplast-specific cpSRP43 protein...
2016: PloS One
https://www.readbyqxmd.com/read/27859075/gastropods-slow-down-succession-and-maintain-diversity-in-cryptogam-communities
#17
Steffen Boch, Daniel Prati, Markus Fischer
Herbivore effects on diversity and succession were often studied in plants, but not in cryptogams. Besides direct herbivore effects on cryptogams, we expected indirect effects by changes in competitive interactions among cryptogams. Therefore, we conducted a long-term gastropod exclusion experiment testing for grazing effects on epiphytic cryptogam communities. We estimated the grazing damage, cover and diversity of cryptogams before gastropods were excluded and three and six years thereafter. Gastropod herbivory pronouncedly affected cryptogams, except for bryophytes, strongly depending on host tree species and duration of gastropod exclusion...
September 2016: Ecology
https://www.readbyqxmd.com/read/27853542/electrical-output-of-bryophyte-microbial-fuel-cell-systems-is-sufficient-to-power-a-radio-or-an-environmental-sensor
#18
Paolo Bombelli, Ross J Dennis, Fabienne Felder, Matt B Cooper, Durgaprasad Madras Rajaraman Iyer, Jessica Royles, Susan T L Harrison, Alison G Smith, C Jill Harrison, Christopher J Howe
Plant microbial fuel cells are a recently developed technology that exploits photosynthesis in vascular plants by harnessing solar energy and generating electrical power. In this study, the model moss species Physcomitrella patens, and other environmental samples of mosses, have been used to develop a non-vascular bryophyte microbial fuel cell (bryoMFC). A novel three-dimensional anodic matrix was successfully created and characterized and was further tested in a bryoMFC to determine the capacity of mosses to generate electrical power...
October 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27852238/illumina-sequencing-based-community-analysis-of-bacteria-associated-with-different-bryophytes-collected-from-tibet-china
#19
Jing Yan Tang, Jing Ma, Xue Dong Li, Yan Hong Li
BACKGROUND: Previous studies on the bacteria associated with the bryophytes showed that there were abundant bacteria inhabited in/on these hosts. However, the type of bacteria and whether these discriminate between different bryophytes based on a particular factor remains largely unknown. RESULTS: This study was designed to analyze the biodiversity and community of the bacteria associated with ten liverworts and ten mosses using Illumina-sequencing techniques based on bacterial 16S rRNA gene...
November 16, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27812169/bryophyte-feeders-in-a-basal-brachyceran-lineage-diptera-rhagionidae-spaniinae-adult-oviposition-behavior-and-changes-in-the-larval-mouthpart-morphology-accompanied-with-the-diet-shifts
#20
Yume Imada, Makoto Kato
Dipteran larval morphology exhibits overwhelming variety, affected by their diverse feeding habits and habitat use. In particular, larval mouthpart morphology is associated with feeding behavior, providing key taxonomic traits. Despite most larval Brachycera being carnivorous, a basal brachyceran family, Rhagionidae, contains bryophyte-feeding taxa with multiple feeding habits. To elucidate the life history, biology, and morphological evolution of the bryophyte-feeding rhagionids, the larval feeding behavior and morphology, and the adult oviposition behavior of four species belonging to three genera of Spaniinae (Spania Meigen, Litoleptis Chillcott and Ptiolina Zetterstedt) are described...
2016: PloS One
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