The evolution of chloroplast RNA editing. (1/14)
RNA editing alters the nucleotide sequence of an RNA molecule so that it deviates from the sequence of its DNA template. Different RNA-editing systems are found in the major eukaryotic lineages, and these systems are thought to have evolved independently. In this study, we provide a detailed analysis of data on C-to-U editing sites in land plant chloroplasts and propose a model for the evolution of RNA editing in land plants. First, our data suggest that the limited RNA-editing system of seed plants and the much more extensive systems found in hornworts and ferns are of monophyletic origin. Further, although some eukaryotic editing systems appear to have evolved to regulate gene expression, or at least are now involved in gene regulation, there is no evidence that RNA editing plays a role in gene regulation in land plant chloroplasts. Instead, our results suggest that land plant chloroplast C-to-U RNA editing originated as a mechanism to generate variation at the RNA level, which could complement variation at the DNA level. Under this model, many of the original sites, particularly in seed plants, have been subsequently lost due to mutation at the DNA level, and the function of extant sites is merely to conserve certain codons. This is the first comprehensive model for the evolution of the chloroplast RNA-editing system of land plants and may also be applicable to the evolution of RNA editing in plant mitochondria. (+info)XET activity is found near sites of growth and cell elongation in bryophytes and some green algae: new insights into the evolution of primary cell wall elongation. (2/14)
BACKGROUND AND AIMS: In angiosperms xyloglucan endotransglucosylase (XET)/hydrolase (XTH) is involved in reorganization of the cell wall during growth and development. The location of oligo-xyloglucan transglucosylation activity and the presence of XTH expressed sequence tags (ESTs) in the earliest diverging extant plants, i.e. in bryophytes and algae, down to the Phaeophyta was examined. The results provide information on the presence of an XET growth mechanism in bryophytes and algae and contribute to the understanding of the evolution of cell wall elongation in general. METHODS: Representatives of the different plant lineages were pressed onto an XET test paper and assayed. XET or XET-related activity was visualized as the incorporation of fluorescent signal. The Physcomitrella genome database was screened for the presence of XTHs. In addition, using the 3' RACE technique searches were made for the presence of possible XTH ESTs in the Charophyta. KEY RESULTS: XET activity was found in the three major divisions of bryophytes at sites corresponding to growing regions. In the Physcomitrella genome two putative XTH-encoding cDNA sequences were identified that contain all domains crucial for XET activity. Furthermore, XET activity was located at the sites of growth in Chara (Charophyta) and Ulva (Chlorophyta) and a putative XTH ancestral enzyme in Chara was identified. No XET activity was identified in the Rhodophyta or Phaeophyta. CONCLUSIONS: XET activity was shown to be present in all major groups of green plants. These data suggest that an XET-related growth mechanism originated before the evolutionary divergence of the Chlorobionta and open new insights in the evolution of the mechanisms of primary cell wall expansion. (+info)Contribution of genosystematics to current concepts of phylogeny and classification of bryophytes. (3/14)
This paper is a survey of the current state of molecular studies on bryophyte phylogeny. Molecular data have greatly contributed to developing a phylogeny and classification of bryophytes. The previous traditional systems of classification based on morphological data are being significantly revised. New data of the authors are presented on phylogeny of Hypnales pleurocarpous mosses inferred from nucleotide sequence data of the nuclear DNA internal transcribed spacers ITS1-2 and the trnL-F region of the chloroplast genome. (+info)Moss and liverwort xyloglucans contain galacturonic acid and are structurally distinct from the xyloglucans synthesized by hornworts and vascular plants. (4/14)
(+info)Bryophyte-specific primers for retrieving plastid genes suitable for phylogenetic inference. (5/14)
(+info)Inferring the higher-order phylogeny of mosses (Bryophyta) and relatives using a large, multigene plastid data set. (6/14)
(+info)Major transitions in the evolution of early land plants: a bryological perspective. (7/14)
(+info)The origin of the sporophyte shoot in land plants: a bryological perspective. (8/14)
(+info)Anthocerotophyta, also known as Hornworts, is a division of non-vascular land plants characterized by the presence of specialized cells called anthéridia for sexual reproduction and chloroplasts without an enclosing membrane, which are considered to have evolved from green algal ancestors.
Anthocerotophyta is a division that includes hornworts, which are non-vascular land plants. These plants are characterized by the presence of specialized cells called mucilage cells and unique reproductive structures called anthoceros-type sporangia. The gametophyte generation is dominant in the life cycle of these plants, and they typically grow in damp, shaded habitats. Some common examples of hornworts include species in the genera Anthoceros, Notothylas, and Phaeoceros.
Anthocerotophyta
IRMNG - Anthocerotophyta
Taxonomic studies on Thai Anthocerotophyta II. The genus Notothylas (notothyladaceae) - Scientific Publications of the Muséum...
Find the fascicles article Taxonomic studies on Thai Anthocerotophyta II. The genus ,I,Notothylas,/I, (notothyladaceae) on the ... Home > Journals > Cryptogamie, Bryologie > 36 (3) > Taxonomic studies on Thai Anthocerotophyta II. The genus Notothylas ( ... Taxonomic studies on Thai Anthocerotophyta II. The genus Notothylas (notothyladaceae). Cryptogamie, Bryologie 2015 (3): 251-266 ... https://sciencepress.mnhn.fr/en/periodiques/bryologie/36/3/taxonomic-studies-thai-anthocerotophyta-ii-genus-notothylas- ...
Phymatoceros - Wikipedia
Specimen Details - The William & Lynda Steere Herbarium
Claudio Delgadillo Moya - Google Acad mico
Klaus WEDDELING | Wildlife Manager | Biologist | Research profile
സസ്യം - വിക്കിപീഡിയ
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"Anthocerotophyta"@la . "Anthocerotophyta"@ar . "Anthocerotophyta"@pt . "Anthocerotophyta"@sw . "Anthocerotophyta"@pt-br . " ... "Anthocerotophyta"@ka . "Anthocerotophyta"@en . "Anthocerotophyta"@de . "Anthocerotophyta"@it . "Anthocerotophyta"@cs . " ... "Anthocerotophyta"@tr . "Anthocerotophyta"@ro . "Anthocerotophyta"@es . "Anthocerotophyta"@fr . "Anthocerotophyta"@ru . " ... "Anthocerotophyta"@sr . "Anthocerotophyta"@sk . "Anthoceratophyta"@uk . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Halaman - Wikipedia, ang malayang ensiklopedya
Palaeos Plants: Bryophyta: Bryophyta-1
Agricultural management, bedrock, and vulnerability of sexual reproduction to climate change affect the occurrence of a...
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A Sampling of Inanimate Life - Inanimate Life
Planteriket
National Eligibility Test : CSIR - NET Dec 2015 questions with Answer keys (Life Sciences) | PharmaTutor
Tag Archive for 'soppmosi' | :: Ágúst H. Bjarnason
Red algae - Wikipedia
Chloroplasts probably evolved following an endosymbiotic event between an ancestral, photosynthetic cyanobacterium and an early eukaryotic phagotroph.[16] This event (termed primary endosymbiosis) is at the origin of the red and green algae (including the land plants or Embryophytes which emerged within them)) and the glaucophytes, which together make up the oldest evolutionary lineages of photosynthetic eukaryotes, the Archaeplastida.[17] A secondary endosymbiosis event involving an ancestral red alga and a heterotrophic eukaryote resulted in the evolution and diversification of several other photosynthetic lineages such as Cryptophyta, Haptophyta, Stramenopiles (or Heterokontophyta), and Alveolata.[17] In addition to multicellular brown algae, it is estimated that more than half of all known species of microbial eukaryotes harbor red-alga-derived plastids.[18] Red algae are divided into the Cyanidiophyceae, a class of unicellular and thermoacidophilic extremophiles found in sulphuric hot ...
Mapping ga:Bosca Sonraí Tacsanomaíochta - DBpedia Mappings
The flora of land plants (bryophytes and vascular plants) in Wangpicheon Ecosystem and Landscape Conservation Area (ELCA), Korea
New Records for the Liverwort and Hornwort Flora of Vietnam, 3 in: Acta Botanica Hungarica Volume 65 Issue 3-4 (2023)
Anthocerotophyta.-Acta Bot. Fennica 148: 27-51.. Piippo. , S. . (. 1993. ): Bryoflora of the Huon Peninsula, Papua New Guinea. ... Anthocerotophyta.-Acta Bot. Fennica 148: 27-51.. Piippo. , S. . (. 1993. ): Bryoflora of the Huon Peninsula, Papua New Guinea. ... 2014): Taxonomic studies on Thai Anthocerotophyta I. The genera Dendroceros and Megaceros (Dendrocerotaceae).-Taiwania 59(4): ... 2014): Taxonomic studies on Thai Anthocerotophyta I. The genera Dendroceros and Megaceros (Dendrocerotaceae).-Taiwania 59(4): ...
Kopnena biljka - Wikipedia
NEON Biorepository Data Portal Taxonomy Display: Plantae
Mula - Wikipedia, ti nawaya nga ensiklopedia
Ti mulmula, ken tinawtawagan pay a berde a mulmula (Viridiplantae iti Latin), ket dagiti sibibiag nga organismo ti pagarian a Plantae a mairaman dagiti adu ti selula a grupo a kas dagiti agsabsabong a mula, konipero, pako ken lumot, ken dagiti pay, depende ti panagilawlawag, ti berde nga algas, ngen saan a dagiti nalabbasit wenno kayumanggi ruot ti taaw a kas dagiti kuelpo, wenno dagiti kudetdet wenno bakteria. Dagiti berde mula ket nadidingan ti selula nga adda ti selula ken naidasdasig a makaala ti kaaduan nga enerhia manipud iti lawag ti init babaen ti potosintesis nga inus-usar ti kloropila a linaod kadagiti kloroplasto, a dagitoy ti mangited ti marisda a berde. Adda dagiti múla a parasitiko ken mabalin a saan nga agpataud kadagiti kadawyan a dagup ti kloropila wenno potosintesia. Dagiti múla ket naidasigda pay babaen ti seksula a panagpatubo, modular ken awan inggana a panagtubo, ken ti maysa a panagbalbaliw dagiti kaputotan, urayno ti aseksual a panagpatubo ket kadawyan, ken adda dagiti ...