keyword
MENU ▼
Read by QxMD icon Read
search

Liverworts

keyword
https://www.readbyqxmd.com/read/28098347/evolutionary-origin-of-phytochrome-responses-and-signaling-in-land-plants
#1
REVIEW
Keisuke Inoue, Ryuichi Nishihama, Takayuki Kohchi
Phytochromes comprise one of the major photoreceptor families in plants, and they regulate many aspects of plant growth and development throughout the plant life cycle. A canonical land plant phytochrome originated in the common ancestor of streptophytes. Phytochromes have diversified in seed plants and some basal land plants due to lineage-specific gene duplications that occurred during the course of land plant evolution. Molecular genetic analyses using Arabidopsis thaliana suggested that there are two types of phytochromes in angiosperms, light-labile type I and light-stable type II, which have different signaling mechanisms and which regulate distinct responses...
January 18, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28087942/the-mutualistic-interaction-between-plants-and-arbuscular-mycorrhizal-fungi
#2
Luisa Lanfranco, Paola Bonfante, Andrea Genre
Mycorrhizal fungi belong to several taxa and develop mutualistic symbiotic associations with over 90% of all plant species, from liverworts to angiosperms. While descriptive approaches have dominated the initial studies of these fascinating symbioses, the advent of molecular biology, live cell imaging, and "omics" techniques have provided new and powerful tools to decipher the cellular and molecular mechanisms that rule mutualistic plant-fungus interactions. In this article we focus on the most common mycorrhizal association, arbuscular mycorrhiza (AM), which is formed by a group of soil fungi belonging to Glomeromycota...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28057327/occurrence-of-brassinosteroids-in-non-flowering-land-plants-liverwort-moss-lycophyte-and-fern
#3
Takao Yokota, Toshiyuki Ohnishi, Kyomi Shibata, Masashi Asahina, Takahito Nomura, Tomomichi Fujita, Kimitsune Ishizaki, Takayuki Kohchi
Endogenous brassinosteroids (BRs) in non-flowering land plants were analyzed. BRs were found in a liverwort (Marchantia polymorpha), a moss (Physcomitrella patens), lycophytes (Selaginella moellendorffii and S. uncinata) and 13 fern species. A biologically active BR, castasterone (CS), was identified in most of these non-flowering plants but another biologically active BR, brassinolide, was not. It may be distinctive that levels of CS in non-flowering plants were orders of magnitude lower than those in flowering plants...
January 2, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28025543/rna-editing-and-its-molecular-mechanism-in-plant-organelles
#4
REVIEW
Mizuho Ichinose, Mamoru Sugita
RNA editing by cytidine (C) to uridine (U) conversions is widespread in plant mitochondria and chloroplasts. In some plant taxa, "reverse" U-to-C editing also occurs. However, to date, no instance of RNA editing has yet been reported in green algae and the complex thalloid liverworts. RNA editing may have evolved in early land plants 450 million years ago. However, in some plant species, including the liverwort, Marchantia polymorpha, editing may have been lost during evolution. Most RNA editing events can restore the evolutionarily conserved amino acid residues in mRNAs or create translation start and stop codons...
December 23, 2016: Genes
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
#5
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/27982074/an-adenylyl-cyclase-with-a-phosphodiesterase-domain-in-basal-plants-with-a-motile-sperm-system
#6
Masahiro Kasahara, Noriyuki Suetsugu, Yuki Urano, Chiaki Yamamoto, Mikiya Ohmori, Yuki Takada, Shujiro Okuda, Tomoaki Nishiyama, Hidetoshi Sakayama, Takayuki Kohchi, Fumio Takahashi
Adenylyl cyclase (AC), which produces the signalling molecule cAMP, has numerous important cellular functions in diverse organisms from prokaryotes to eukaryotes. Here we report the identification and characterization of an AC gene from the liverwort Marchantia polymorpha. The encoded protein has both a C-terminal AC catalytic domain similar to those of class III ACs and an N-terminal cyclic nucleotide phosphodiesterase (PDE) domain that degrades cyclic nucleotides, thus we designated the gene MpCAPE (COMBINED AC with PDE)...
December 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27939317/regional-growth-rate-differences-specified-by-apical-notch-activities-regulate-liverwort-thallus-shape
#7
Jeremy E Solly, Nik J Cunniffe, C Jill Harrison
Plants have undergone 470 million years of evolution on land and different groups have distinct body shapes. Liverworts are the most ancient land plant lineage and have a flattened, creeping body (the thallus), which grows from apical cells in an invaginated "notch." The genetic mechanisms regulating liverwort shape are almost totally unknown, yet they provide a blueprint for the radiation of land plant forms. We have used a combination of live imaging, growth analyses, and computational modeling to determine what regulates liverwort thallus shape in Marchantia polymorpha...
January 9, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/27908578/water-pollution-causes-ultrastructural-and-functional-damages-in-pellia-neesiana-gottsche-limpr
#8
Adriana Basile, Sergio Sorbo, Marco Lentini, Barbara Conte, Sergio Esposito
The aim of this work is to evaluate the effects of freshwater pollution in the heavily contaminated Sarno River (Campania, South Italy), using Pellia neesiana (Pelliaceae Metzgeriales) in order to propose this liverwort as a potential bioindicator, able to record the effects of water pollution, particularly the one related to metal (loid) contamination. Samples of P. neesiana in nylon bags were disposed floating for one week on the waters of Sarno River in three sites characterised by an increasing pollution...
November 25, 2016: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27886385/nonreciprocal-complementation-of-knox-gene-function-in-land-plants
#9
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/27875778/phytochrome-interacting-factor-from-arabidopsis-to-liverwort
#10
REVIEW
Nayoung Lee, Giltsu Choi
Phytochromes are red and far-red light photoreceptors that regulate the responses of plants to light throughout their life cycles. Phytochromes do this in part by inhibiting the function of a group of basic helix-loop-helix transcription factors called phytochrome-interacting factors (PIFs). Arabidopsis has eight PIFs that function sometimes redundantly and sometimes distinctively depending on their expression patterns and protein stability, as well as on variations in the promoters they target in vivo. PIF-like proteins exist in other seed plants and non-vascular plants where they also regulate light responses...
November 19, 2016: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/27866889/the-mechanism-forming-the-cell-surface-of-tip-growing-rooting-cells-is-conserved-among-land-plants
#11
Suvi Honkanen, Victor A S Jones, Giulia Morieri, Clement Champion, Alexander J Hetherington, Steve Kelly, Hélène Proust, Denis Saint-Marcoux, Helen Prescott, Liam Dolan
To discover mechanisms that controlled the growth of the rooting system in the earliest land plants, we identified genes that control the development of rhizoids in the liverwort Marchantia polymorpha. 336,000 T-DNA transformed lines were screened for mutants with defects in rhizoid growth, and a de novo genome assembly was generated to identify the mutant genes. We report the identification of 33 genes required for rhizoid growth, of which 6 had not previously been functionally characterized in green plants...
December 5, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27859339/ferns-mosses-and-liverworts-as-model-systems-for-light-mediated-chloroplast-movements
#12
REVIEW
Noriyuki Suetsugu, Takeshi Higa, Masamitsu Wada
Light-induced chloroplast movement is found in most plant species, including algae and land plants. In land plants with multiple small chloroplasts, under weak light conditions, the chloroplasts move towards the light and accumulate on the periclinal cell walls to efficiently perceive light for photosynthesis (the accumulation response). Under strong light conditions, chloroplasts escape from light to avoid photodamage (the avoidance response). In most plant species, blue light induces chloroplast movement and phototropin receptor kinases are the blue light receptors...
November 17, 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27852238/illumina-sequencing-based-community-analysis-of-bacteria-associated-with-different-bryophytes-collected-from-tibet-china
#13
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/27847500/a-genetic-and-chemical-perspective-on-symbiotic-recruitment-of-cyanobacteria-of-the-genus-nostoc-into-the-host-plant-blasia-pusilla-l
#14
Anton Liaimer, John B Jensen, Elke Dittmann
Liverwort Blasia pusilla L. recruits soil nitrogen-fixing cyanobacteria of genus Nostoc as symbiotic partners. In this work we compared Nostoc community composition inside the plants and in the soil around them from two distant locations in Northern Norway. STRR fingerprinting and 16S rDNA phylogeny reconstruction showed a remarkable local diversity among isolates assigned to several Nostoc clades. An extensive web of negative allelopathic interactions was recorded at an agricultural site, but not at the undisturbed natural site...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27815071/cloning-and-functional-characterization-of-a-phenolic-acid-decarboxylase-from-the-liverwort-conocephalum-japonicum
#15
Shuai Gao, Hai-Na Yu, Yi-Feng Wu, Xin-Yan Liu, Ai-Xia Cheng, Hong-Xiang Lou
Some commercially important vinyl derivatives are produced by the decarboxylation of phenolic acids. Enzymatically, this process can be achieved by phenolic acid decarboxylases (PADs), which are able to act on phenolic acid substrates such as ferulic and p-coumaric acid. Although many microbial PADs have been characterized, little is known regarding their plant homologs. Transcriptome sequencing in the liverworts has identified seven putative PADs, which share a measure of sequence identity with microbial PADs, but are typically much longer proteins...
November 1, 2016: Biochemical and Biophysical Research Communications
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
#16
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
https://www.readbyqxmd.com/read/27791023/microbial-type-terpene-synthase-genes-occur-widely-in-nonseed-land-plants-but-not-in-seed-plants
#17
Qidong Jia, Guanglin Li, Tobias G Köllner, Jianyu Fu, Xinlu Chen, Wangdan Xiong, Barbara J Crandall-Stotler, John L Bowman, David J Weston, Yong Zhang, Li Chen, Yinlong Xie, Fay-Wei Li, Carl J Rothfels, Anders Larsson, Sean W Graham, Dennis W Stevenson, Gane Ka-Shu Wong, Jonathan Gershenzon, Feng Chen
The vast abundance of terpene natural products in nature is due to enzymes known as terpene synthases (TPSs) that convert acyclic prenyl diphosphate precursors into a multitude of cyclic and acyclic carbon skeletons. Yet the evolution of TPSs is not well understood at higher levels of classification. Microbial TPSs from bacteria and fungi are only distantly related to typical plant TPSs, whereas genes similar to microbial TPS genes have been recently identified in the lycophyte Selaginella moellendorffii The goal of this study was to investigate the distribution, evolution, and biochemical functions of microbial terpene synthase-like (MTPSL) genes in other plants...
October 25, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27744015/species-delimitation-and-biogeography-of-a-southern-hemisphere-liverwort-clade-frullania-subgenus-microfrullania-frullaniaceae-marchantiophyta
#18
Benjamin E Carter, Juan Larraín, Alžběta Manukjanová, Blanka Shaw, A Jonathan Shaw, Jochen Heinrichs, Peter de Lange, Monica Suleiman, Louis Thouvenot, Matt von Konrat
Frullania subgenus Microfrullania is a clade of ca. 15 liverwort species occurring in Australasia, Malesia, and southern South America. We used combined nuclear and chloroplast sequence data from 265 ingroup accessions to test species circumscriptions and estimate the biogeographic history of the subgenus. With dense infra-specific sampling, we document an important role of long-distance dispersal in establishing phylogeographic patterns of extant species. At deeper time scales, a combination of phylogenetic analyses, divergence time estimation and ancestral range estimation were used to reject vicariance and to document the role of long-distance dispersal in explaining the evolution and biogeography of the clade across the southern Hemisphere...
October 13, 2016: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/27722705/phytocannabinoids-a-unified-critical-inventory
#19
Lumír Ondřej Hanuš, Stefan Martin Meyer, Eduardo Muñoz, Orazio Taglialatela-Scafati, Giovanni Appendino
Covering up to January 2016Cannabis sativa L. is a prolific, but not exclusive, producer of a diverse group of isoprenylated resorcinyl polyketides collectively known as phytocannabinoids. The modular nature of the pathways that merge into the phytocannabinoid chemotype translates in differences in the nature of the resorcinyl side-chain and the degree of oligomerization of the isoprenyl residue, making the definition of phytocannabinoid elusive from a structural standpoint. A biogenetic definition is therefore proposed, splitting the phytocannabinoid chemotype into an alkyl- and a β-aralklyl version, and discussing the relationships between phytocannabinoids from different sources (higher plants, liverworts, fungi)...
October 10, 2016: Natural Product Reports
https://www.readbyqxmd.com/read/27703856/actin-dependence-of-the-chloroplast-cold-positioning-response-in-the-liverwort-marchantia-polymorpha-l
#20
Shun Kimura, Yutaka Kodama
The subcellular positioning of chloroplasts can be changed by alterations in the environment such as light and temperature. For example, in leaf mesophyll cells, chloroplasts localize along anticlinal cell walls under high-intensity light, and along periclinal cell walls under low-intensity light. These types of positioning responses are involved in photosynthetic optimization. In light-mediated chloroplast positioning responses, chloroplasts move to the appropriate positions in an actin-dependent manner, although some exceptions also depend on microtubule...
2016: PeerJ
keyword
keyword
22601
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"