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Contrasting patterns in the evolution of the Rab GTPase family in Archaeplastida

100%

Petrzelkova R., Elias M.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 4

Rab GTPases are a vast group of proteins serving a role of master regulators in membrane trafficking in eukaryotes. Previous studies delineated some 23 Rab and Rab-like paralogs ancestral for eukaryotes and mapped their current phylogenetic distribution, but the analyses relied on a limited sampling of the eukaryotic diversity. Taking advantage of the recent growth of genome and transcriptome resources for phylogenetically diverse plants and algae, we reanalyzed the evolution of the Rab family in eukaryotes with the primary plastid, collectively constituting the presumably monophyletic supergroup Archaeplastida. Our most important novel findings are as follows: (i) the ancestral set of Rabs in Archaeplastida included not only the paralogs Rab1, Rab2, Rab5, Rab6, Rab7, Rab8, Rab11, Rab18, Rab23, Rab24, Rab28, IFT27, and RTW (=Rabl2), as suggested previously, but also Rab14 and Rab34, because Rab14 exists in glaucophytes and Rab34 is present in glaucophytes and some green algae; (ii) except in embryophytes, Rab gene duplications have been rare in Archaeplastida. Most notable is the independent emergence of divergent, possibly functionally novel, in-paralogs of Rab1 and Rab11 in several archaeplastidial lineages; (iii) recurrent gene losses have been a significant factor shaping Rab gene complements in archaeplastidial species; for example, the Rab21 paralog was lost at least six times independently within Archaeplastida, once in the lineage leading to the “core” eudicots; (iv) while the glaucophyte Cyanophora paradoxa has retained the highest number of ancestral Rab paralogs among all archaeplastidial species studied so far, rhodophytes underwent an extreme reduction of the Rab gene set along their stem lineage, resulting in only six paralogs (Rab1, Rab2, Rab6, Rab7, Rab11, and Rab18) present in modern red algae. Especially notable is the absence of Rab5, a virtually universal paralog essential for the endocytic pathway, suggesting that endocytosis has been highly reduced or rewired in rhodophytes.

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Indicator value of freshwater red algae in running waters for water quality assessment

100%

Eloranta P., Kwandrans J.

Oceanological and Hydrobiological Studies

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2004

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tom 33

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nr 1

3

Hildenbrandia rivularis [Rhodophyta] in Central Poland

100%

Zelazna-Wieczorek J., Ziulkiewicz M.

Acta Societatis Botanicorum Poloniae

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2008

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tom 77

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nr 1

Freshwater red algae Hildenbrandia rivularis has been noted for the first time in central Poland near the Lodz agglomeration. Until now, this alga was recorded only in mountain and Polish Lowland areas. The wide range of habitat conditions influencing the occurrence for this protected species has been determined in the spring niche. The possible threat to habitat where H. rivularis occurs, is connected with construction and exploitation of the A2 highway

4

New records of Compsopogon aeruginosus (Rhodophyta) in rivers of Central Europe

84%

Zakova Z., Pum M., Sedlacek P., Mlejnkova H., Hindak F.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 4

5

Monophyly of Archaeplastida supergroup and relationships among its lineages in the light of phylogenetic and phylogenomic studies. Are we close to a consensus?

84%

Mackiewicz P., Gagat P.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 4

One of the key evolutionary events on the scale of the biosphere was an endosymbiosis between a heterotrophic eukaryote and a cyanobacterium, resulting in a primary plastid. Such an organelle is characteristic of three eukaryotic lineages, glaucophytes, red algae and green plants. The three groups are usually united under the common name Archaeplastida or Plantae in modern taxonomic classifications, which indicates they are considered monophyletic. The methods generally used to verify this monophyly are phylogenetic analyses. In this article we review up-to-date results of such analyses and discussed their inconsistencies. Although phylogenies of plastid genes suggest a single primary endosymbiosis, which is assumed to mean a common origin of the Archaeplastida, different phylogenetic trees based on nuclear markers show monophyly, paraphyly, polyphyly or unresolved topologies of Archaeplastida hosts. The difficulties in reconstructing host cell relationships could result from stochastic and systematic biases in data sets, including different substitution rates and patterns, gene paralogy and horizontal/endosymbiotic gene transfer into eukaryotic lineages, which attract Archaeplastida in phylogenetic trees. Based on results to date, it is neither possible to confirm nor refute alternative evolutionary scenarios to a single primary endosymbiosis. Nevertheless, if trees supporting monophyly are considered, relationships inferred among Archaeplastida lineages can be discussed. Phylogenetic analyses based on nuclear genes clearly show the earlier divergence of glaucophytes from red algae and green plants. Plastid genes suggest a more complicated history, but at least some studies are congruent with this concept. Additional research involving more representatives of glaucophytes and many understudied lineages of Eukaryota can improve inferring phylogenetic relationships related to the Archaeplastida. In addition, alternative approaches not directly dependent on phylogenetic methods should be developed.

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Are all red algal parasites cut from the same cloth?

84%

Salomaki E. D., Lane C. E.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 4

Parasitism is a common life strategy throughout the eukaryotic tree of life. Many devastating human pathogens, including the causative agents of malaria and toxoplasmosis, have evolved from a photosynthetic ancestor. However, how an organism transitions from a photosynthetic to a parasitic life history strategy remains mostly unknown. This is largely because few systems present the opportunity to make meaningful comparisons between a parasite and a close free-living relative. Parasites have independently evolved dozens of times throughout the Florideophyceae (Rhodophyta), and often infect close relatives. The accepted evolutionary paradigm proposes that red algal parasites arise by first infecting a close relative and over time diversify and infect more distantly related species. This provides a natural evolutionary gradient of relationships between hosts and parasites that share a photosynthetic common ancestor. Elegant microscopic work in the late 20th century provided detailed insight into the infection cycle of red algal parasites and the cellular interactions between parasites and their hosts. Those studies led to the use of molecular work to further investigate the origins of the parasite organelles and reveal the evolutionary relationships between hosts and their parasites. Here we synthesize the research detailing the infection methods and cellular interactions between red algal parasites and their hosts. We offer an alternative hypothesis to the current dogma of red algal parasite evolution and propose that red algae can adopt a parasitic life strategy through multiple evolutionary pathways, including direct infection of distant relatives. Furthermore, we highlight potential directions for future research to further evaluate parasite evolution in red algae.

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Nowe stanowiska Hildenbrandia rivularis (Liemb.) J. Agardh (Rhodophyta) w województwie lubuskim

84%

Smoczyk M.

Przegląd Przyrodniczy

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2011

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tom 22

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nr 4

8

Algi - energia jutra (biomasa, biodiesel) - artykuł przeglądowy

67%

Frac M., Jezierska-Tys S., Tys J.

Acta Agrophysica

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2009

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tom 13

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nr 3[168]

9

Factors determining the distribution of rheophil and protected Hildenbrandia rivularis (Liebmann) J. Agardh 1851, the Rhodophyta freshwater species, in lowland river ecosystems

67%

Jakubas E., Gabka M., Joniak T.

Polish Journal of Ecology

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2014

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tom 62

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nr 4

The relationships of Hildenbrandia rivularis (Rhodophyta), the species composition of its surroundings detailed environmental variables (water chemistry and hydrological, morphological and bottom features) in a lowland river (Wełna river, Western Poland) was investigated. H. rivularis from 40 stands was tested together with 25 environmental variables and vegetation. Detrended correspondence analysis (DCA) and redundancy analysis (RDA) were used to describe the relations between the species composition and the selected variables. The uniqueness of this protected species is an ability of formation incrustation on rocks but also coexistence with two groups of species: other algae and vascular plants. In study twenty-two plant taxa were recorded in 40 vegetation plots, including 4 macroscopic algae, 2 mosses and 16 vascular plants. The most common H. rivularis co-occurred with Leptodictyum riparium, Fontinalis antipyretica and Nuphar lutea. Most of the studied plots with red algae were characterised by shallow water and strong water velocity. H. rivularis prefers alkaline water with high conductivity. The results of the RDA, after forward selection, demonstrated that pH gradient, optical features such as dissolved organic matter and water colour – control the variation in the floristic communities with H. rivularis.

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The determination of total protein, total soluble carbohydrate and pigment contents of some macroalgae collected from Gemlik-Karacaali (Bursa) and Erdek-Ormanli (Balikesir) in the Sea of Marmara, Turkey

67%

Dere S., Dalkiran N., Karacaoglu D., Yildiz G., Dere E.

Oceanologia

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2003

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tom 45

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nr 3

In this study, 12 taxa from the Chlorophyta, Phaeophyta and Rhodophyta were collected from different depths at Gemlik-Karacaali and Erdek-Ormanlı. A total of 175 specimens from these divisions were used to determine Total Protein (TP), Total Soluble Carbohydrate (TSCH) and Chlorophyll a (Chl a), Chlorophyll b (Chl b), Chlorophyll c (Chl c), total carotenoid (Car) contents and Chl b/Chl a, Chl c/Chl a, Car/Chl a, Car/Chl b, Car/Chl c ratios. TP, TSCH and pigment contents varied significantly with respect to the algal taxa, stations and depth distribution. In addition, individual differences were important in all of the measured parameters. The maximum TP contents (0.94%–31.03%) were determined in some of the Rhodophyta. In some green seaweeds belonging to the genus Ulva L., the TP content was determined between 2.9%–28.1%. Lower TP contents were determined in Cystoseira barbata (Good) C. Agardh (1.1%–4.3%). In contrast to TP contents, TSCH values were very low; maximum TSCH were determined in Ulva species, as were protein contents. In conclusion, the variations in TP, TSCH and pigment in 12 taxa of macroalgae were analysed according to station, depth, and environment.

11

A new application of oxyreactive thermal analysis in marine algological studies

67%

Cebulak S., Plinski M.

Oceanologia

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1996

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tom 38

|

nr 1

12

Vegetation along the Polish coast of the southern Baltic in 1992-95

67%

Plinski M., Kwiatkowska B., Jozwiak T.

Oceanological Studies

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1996

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tom 25

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nr 4

13

Changes in composition and distribution of benthic algae on the Polish coast of the Baltic Sea [1986-1991]

59%

Plinski M., Tarasiuk J., Jozwiak T.

Oceanologia

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1992

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tom 33

14

Krew na kamieniach

59%

Kornobis S.

Magazyn Aqua

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1996

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nr 12

29-31

15

Rośliny skrytokwiatowe (Cryptogamae). Opisanie ich budowy, tudzież sposobów zbierania, preparowania i badania (z 2 litografowanemi tablicami). Wodorosty (Algae)

51%

Filipowicz K.

Wszechświat

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1882

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tom 1

|

nr 05

16

Taxonomic investigations of cyanobacterial and algal flora from the Southern Altai, East Kazakhstan

51%

Caisova L., Besta T., Chlachula J., Komarek J., Husak S.

Biodiversity: Research and Conservation

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2009

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tom 15

Ograniczanie wyników

Contrasting patterns in the evolution of the Rab GTPase family in Archaeplastida

Indicator value of freshwater red algae in running waters for water quality assessment

Hildenbrandia rivularis [Rhodophyta] in Central Poland

New records of Compsopogon aeruginosus (Rhodophyta) in rivers of Central Europe

Monophyly of Archaeplastida supergroup and relationships among its lineages in the light of phylogenetic and phylogenomic studies. Are we close to a consensus?

Are all red algal parasites cut from the same cloth?

Nowe stanowiska Hildenbrandia rivularis (Liemb.) J. Agardh (Rhodophyta) w województwie lubuskim

Algi - energia jutra (biomasa, biodiesel) - artykuł przeglądowy

Factors determining the distribution of rheophil and protected Hildenbrandia rivularis (Liebmann) J. Agardh 1851, the Rhodophyta freshwater species, in lowland river ecosystems

The determination of total protein, total soluble carbohydrate and pigment contents of some macroalgae collected from Gemlik-Karacaali (Bursa) and Erdek-Ormanli (Balikesir) in the Sea of Marmara, Turkey

A new application of oxyreactive thermal analysis in marine algological studies

Vegetation along the Polish coast of the southern Baltic in 1992-95

Changes in composition and distribution of benthic algae on the Polish coast of the Baltic Sea [1986-1991]

Krew na kamieniach

Rośliny skrytokwiatowe (Cryptogamae). Opisanie ich budowy, tudzież sposobów zbierania, preparowania i badania (z 2 litografowanemi tablicami). Wodorosty (Algae)

Taxonomic investigations of cyanobacterial and algal flora from the Southern Altai, East Kazakhstan