Wyniki wyszukiwania

1

Lupinus angustifolius - nitrogen fixing bacteria symbiosis analysed by cDNA arrays

100%

Kisiel A., Legocki A. B., Podkowinski J.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

2

Biological nitrogen fixation with non-legumes: An achievable target or a dogma?

86%

Saikia S. P., Jain V.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

3

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Characteristics of the spring/summer production in the Mecklenburg Bight (Baltic Sea) as revealed by long-term pCO2 data

86%

Schnaider B., Buecker S., Kaitala S., Maunula P., Wasmund N.

Oceanologia

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2015

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tom 57

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nr 4

4

Nitrogen fixation in agriculture: perspectives

86%

Legocki A. B.

Biotechnologia

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1996

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nr 1

5

Nitrate reductase activity as an indicator of nitrate fixation and assimilation by tropical forest species on St.Thomas Island

86%

Krywult M., Klich M.

Fragmenta Floristica et Geobotanica

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2000

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tom 45

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nr 1-2

6

Nitrogen transformations and their circumstances in soils

86%

Wlodarczyk T.

Acta Agrophysica

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2002

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tom 63

7

Symbiotic effectiveness of a siderophore overproducing mutant of Mesorhizobium ciceri

86%

Raychaudhuri N., Das S. K., Chakrabartty P. K.

Polish Journal of Microbiology

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2005

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tom 54

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nr 1

Mutants of Mesorhizobium ciceri BICC 651 were generated by N-methyl-N'-nitro-Af-nitrosoguanidine mutagenesis. Siderophore overproducing mutants were identified on Chrome azurol S agar plates. One of them determined as N15 was examined for symbiotic efficiency and compared to its wild type parent i.e. BICC 651 strain under sterile conditions using Leonard jars in growth chamber and also in pots containing nonsterile alluvial field soil. It was observed that the strain N15 produced about 30% higher number of nodules per plant, fixed 25% more nitrogen per gram of nodule and caused more than 30% increased dry weight of plant shoots.

8

Effects of nitrogen deposition on growth and relationship of Robinia pseudoacacia and Quercus acutissima seedlings

72%

Ding W., Wang R., Yuan Y., Liang X., Liu J.

Dendrobiology

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2012

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tom 67

Increased nitrogen deposition and biological invasions may be two crucial consequences of global change. Exotic plants often have adverse effects on native plants. However, there are reports of occasional positive interaction between them. Increased nitrogen deposition enhances nitrogen availability in soil, which may facilitate the growth of some exotic plant and decrease the competitive advantage of native plants because of their adaptation to low-nutrient environments. Consequently, increased nitrogen deposition may regulate the relationship between exotic and native plants. A greenhouse experiment was, thus, conducted to examine the effects of increased nitrogen deposition on the relationship between the native Quercus acutissima and the exotic Robinia pseudoacacia, which are both widely distributed in North China. Seedlings of both species were grown in monoculture and mixture arrangements in a pot experiment with different nitrogen addition levels (i.e., 0, 2, 5, and 10 g N m–2 a–1). Nitrogen addition altered the biomass partitioning of Q. acutissima and R. pseudoacacia seedlings, with more biomass allocated to leaves and less to roots. Although R. pseudoacacia seedlings always had growth predominance over Q. acutissima seedlings, Q. acutissima was not threatened by R. pseudoacacia at the four levels of nitrogen addition during the three-month duration of the experiment. A positive interaction between the seedlings of R. pseudoacacia and Q. acutissima was found, and increased nitrogen deposition did not affect the positive interaction. Further studies are necessary to determine whether or not R. pseudoacacia is harmful to native ecosystems and should be limited for forestation in North China.

9

Influence of various algal species on sunflower (Helianthus L.) seed germination and development

72%

Romanowska-Duda Z., Grzesik M., Woznicki P., Andrzejczak M. E., Warzecha D.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

10

What roles for hydrogen peroxide (H2O2) in the legume – Rhizobium symbiosis?

72%

Andrio E., Gucciardo S., Mandon K., Marino D., Oger E., Puppo A., Pauly N.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

11

The influence of the organic matter of sewage sediments on biological activity of microorganisms which carry out the transformations of carbon and nitrogen compounds

72%

Pisarek I., Grata K.

Polish Journal of Microbiology

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2013

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tom 62

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nr 4

Soil microorganisms play an important role in the organic matter transformation process. The soil microorganisms also are in symbiotic relationship with plants. At the same time, soil microorganisms are sensitive to both anthropogenic and natural habitat changes. Particular characteristics of organic matter (the C:N relation, pH, the content the content of assimilated nutrients, the xenobiotics etc.) modify the biotic conditions of the soils. This particularly concerns the microorganisms which carry out the changes in the mineral and organic nitrogen compounds and the transformation of the external organic matter. The first aim of this work was to assess the influence of the sewage sediments and the manure on the phytosanitary potential of the soil environment. The second aim of this article was to estimate the number and activity of microorganisms which carry out the transformation of carbon and nitrogen compounds. This work showed the stimulating effect of the external organic matter both on the number and on the activity of most of the physiological groups. The manure mainly stimulated ammonificators, amylolitic microorganisms and Azotobacter sp. The sewage sediments mainly stimulated ammonificators, nitrifiers of I phase and cellulolytic microorganisms. The statistically significant impact of the physio-chemical soil habitat on the biological activity of the analyzed groups of microbes was also noted.

12

Translational and structural analysis of the shortest legume ENOD40 gene in Lupinus luteus

72%

Podkowinski J., Zmienko A., Florek B., Wojciechowski P., Rybarczyk A., Wrzesinski J., Ciesiolka J., Blazewicz J., Kondorosi A., Crespi M., Legocki A.

Acta Biochimica Polonica

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2009

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tom 56

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nr 1

89-102

Two early nodulin 40 (enod40) genes, ENOD40-1, the shortest legume ENOD40 gene, and ENOD40-2, were isolated from Lupinus luteus, a legume with indeterminate nodules. Both genes were expressed at similar levels during symbiosis with nitrogen-fixing bacteria. ENOD40 phylogeny clustered the L. luteus genes with legumes forming determinate nodules and revealed peptide similarities. The ENOD40-1 small ORF A fused to a reporter gene was efficiently expressed in plant cells, indicating that the start codon is recognized for translation. The ENOD40-1 RNA structure predicted based on Pb(II)-induced cleavage and modeling revealed four structurally conserved domains, an absence of domain 4 characteristic for legumes of indeterminate nodules, and interactions between the conserved region I and a region located upstream of domain 6. Domain 2 contains Mg(II) ion binding sites essential for organizing RNA secondary structure. The differences between L. luteus and Glycine max ENOD40 RNA models suggest the possibility of a switch between two structural states of ENOD40 transcript.

13

Unique genome evolution in an intracellular N2-fixing symbiont of a rhopalodiacean diatom

72%

Nakayama T., Inagaki Y.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 4

Cyanobacteria, the major photosynthetic prokaryotic lineage, are also known as a major nitrogen fixer in nature. N2-fixing cyanobacteria are frequently found in symbioses with various types of eukaryotes and supply fixed nitrogen compounds to their eukaryotic hosts, which congenitally lack N2-fixing abilities. Diatom species belonging to the family Rhopalodiaceae also possess cyanobacterial symbionts called spheroid bodies. Unlike other cyanobacterial N2-fixing symbionts, the spheroid bodies reside in the cytoplasm of the diatoms and are inseparable from their hosts. Recently, the first spheroid body genome from a rhopalodiacean diatom has been completely sequenced. Overall features of the genome sequence showed significant reductive genome evolution resulting in a diminution of metabolic capacity. Notably, despite its cyanobacterial origin, the spheroid body was shown to be truly incapable of photosynthesis implying that the symbiont energetically depends on the host diatom. The comparative genome analysis between the spheroid body and another N2-fixing symbiotic cyanobacterial group corresponding to the UCYN-A phylotypes – both were derived from cyanobacteria closely related to genus Cyanothece – revealed that the two symbionts are on similar, but explicitly distinct tracks of reductive evolution. Intimate symbiotic relationships linked by nitrogen fixation as seen in rhopalodiacean diatoms may help us better understand the evolution and mechanisms of bacterium-eukaryote endosymbioses.

14

Impact of ship-borne nitrogen deposition on the Gulf of Finland ecosystem: an evaluation

72%

Raudsepp U., Laanemets J., Maljutenko I., Hongisto M., Jalkanen J.-P.

Oceanologia

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2013

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tom 55

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nr 4

15

Localization of nitric oxide (NO) in effective and partially effective Medicago truncatula root nodules

72%

Bederska M., Borucki W.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

|

nr 2

16

Studies on the role of hup system in symbiotic nitrogen fixation in Cajanus cajan L.

72%

Gosal S. K., Sekhon G. K., Gupta R. P., Pandher M. S.

Acta Microbiologica Polonica

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1992

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tom 41

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nr 3-4

17

Ontogenic variation of nodulation, nitrogen fixation and nitrogen assimilation in lentil [Lens culinaris Medic]. I. Soil characteristics, nodulation and plant yield

72%

Awan M. F. M.

Acta Physiologiae Plantarum

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1994

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tom 16

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nr 3

18

Role of Rhizobium surface components in biological nitrogen fixation

72%

Lorkiewicz Z.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1994

|

tom 42

|

nr 2

19

Nitrogen fixation in several grain legume species with contrasting sensitivities to copper nutrition

72%

Seliga H.

Acta Physiologiae Plantarum

|

1998

|

tom 20

|

nr 3

The nitrogen fixation response to copper nutrition in faba bean, yellow lupin and soybean was studied. Copper nutrition significantly increased the pod yields of all tested grain legumes but faba bean gave the greatest Cu-use efficiency for pod and grain production. The accumulation of dry matter in vegetative parts, nodules, N and leghemoglobin concentration in nodules and nitrogen accumulation in the whole plants were increased by copper supply in faba bean and yellow lupin in contrast with soybean. Cu nutrition significantly increased the Cu concentrations in nodules of all cultivated plants. The differential sensitivity of N₂ fixation in tested grain legume species to copper nutrition could be connected with the level of phenols in nodules and depended on both the host plants and strains of rhizobia, which differ in their ability to produce catechol-like siderophores. Copper requirements by symbiotic N₂ fixation could also depend on the nature of phenols in nodules (presence of o-dihydroxyphenols or number of hydroxyls in molecule).

20

Ontogenic variation of nodulation, nitrogen fixation and nitrogen assimilation in lentil [Lens culinaris Medic]. II. Nitrogenase, nitrate reductase and glutamine synthetase activities

72%

Awan M. F. M.

Acta Physiologiae Plantarum

|

1994

|

tom 16

|

nr 4

Ograniczanie wyników

Lupinus angustifolius - nitrogen fixing bacteria symbiosis analysed by cDNA arrays

Biological nitrogen fixation with non-legumes: An achievable target or a dogma?

Characteristics of the spring/summer production in the Mecklenburg Bight (Baltic Sea) as revealed by long-term pCO2 data

Nitrogen fixation in agriculture: perspectives

Nitrate reductase activity as an indicator of nitrate fixation and assimilation by tropical forest species on St.Thomas Island

Nitrogen transformations and their circumstances in soils

Symbiotic effectiveness of a siderophore overproducing mutant of Mesorhizobium ciceri