Erratum: A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov.

1978 ◽  
Vol 24 (12) ◽  
pp. 1622-1622
Author(s):  
Jeffrey J. Tarrand ◽  
Noel R. Krieg ◽  
Johanna Döbereiner
Keyword(s):  
Azospirillum Brasilense ◽  
New Genus ◽  
Taxonomic Study ◽  
Azospirillum Lipoferum

Characterization of Azospirillum associated with maize (Zea mays) in France, using biochemical tests and plasmid profiles

1992 ◽  
Vol 38 (8) ◽  
pp. 798-803 ◽  
Author(s):  
Isabelle Penot ◽  
Nathalie Berges ◽  
Christine Guinguene ◽  
Jacques Fages
Keyword(s):  
Zea Mays ◽  
Azospirillum Brasilense ◽  
Zea Mays L ◽  
Specific Method ◽  
Azospirillum Lipoferum ◽  
Biochemical Tests ◽  
Plasmid Profiles ◽  
Clear Differentiation ◽  
Plasmid Profiling

Thirty Azospirillum strains were isolated from the rhizosphere of 13 maize (Zea mays L.) cultivars grown in 14 French soils, using a new specific method, which has been given the name ROSEA. Among these strains 26 were Azospirillum lipoferum and 4 were Azospirillum brasilense. Their characterization was achieved using biochemical tests and plasmid profiles. Biochemical patterns allowed clear differentiation between the two species. A large diversity in carbon source metabolism was found among the Azospirillum sp. strains regardless of their origin. The A. brasilense were much more closely related, and were found in only two of the rhizospheres studied. The 30 plasmid patterns were all different, and the plasmid-profiling technique can therefore be considered as strain specific. All the A. lipoferum harboured a 150-MDa plasmid, while all the A. brasilense harboured a 90 to 100-MDa plasmid. This result reinforces the hypothesis of the presence of such plasmids as an additional criterion for differentiating these two species. Key words: Zea mays, Azospirillum, ROSEA method, biochemical tests, plasmid profiles.

Revision of the genera Cyphonethes Verhoeff, 1926 and Titanethes Schioedte, 1849 (Isopoda: Oniscoidea: Trichoniscidae) with a description of a new genus and three new taxa

Zootaxa ◽  
2018 ◽  
Vol 4459 (2) ◽  
pp. 261 ◽  
Author(s):  
IVO M. KARAMAN ◽  
MLADEN HORVATOVIĆ
Keyword(s):  
New Genus ◽  
Dorsal Surface ◽  
Comparative Morphology ◽  
Taxonomic Study ◽  
Conducting System ◽  
Adult Males ◽  
New Genus And Species ◽  
Tergal Glands ◽  
Close Relationship ◽  
A New Species

A taxonomic study of two troglobite genera resulted in remarkable changes to their composition and our perception of their relationship. The genus Titanethes is treated as monotypic, with one newly described taxon, Titanethes albus matovici n. ssp. One species is transferred from Titanethes to the genus Cyphonethes, Cyphonethes biseriatus (Verhoeff, 1900) comb. nov. A species and a genus are synonymized, Microtitanethes licodrensis syn. nov. The diagnosis of the genus Cyphonethes is amended and revised using comparative morphology of adult males. A new species, Cyphonethes tajanus n. sp, is described. A close relationship between the genera Titanethes and Spelaeonethes is established. Cetinjella monasetrii n. g., n. sp, is described as a new genus and species close to the genus Cyphonethes. It is assumed to be a higropetric cave inhabitant, based on its pereopode structure, with elongated fused dactylus and unguis, and partly by its slightly modified mouthparts. Unique water uptake (for the water conducting system) by the dorsal surface of the frontal pereionite is also assumed for the species, based on the presence, distribution and orientation of specific small scales. The presence and structure of male tergal glands in the genus Tithanethes are treated as taxonomically irrelevant. 

scholarly journals A taxonomic study of a new genus and three news species of Eulophidae (Hymenoptera: Chalcidoidea) from India

2006 ◽  
Vol 21 (11) ◽  
pp. 2467-2470
Author(s):  
T.C. Narendran ◽  
M. Sheeba ◽  
M.C. Jilcy
Keyword(s):  
New Genus ◽  
Taxonomic Study

scholarly journals Realocação de nitrogênio e de biomassa para os grãos, em trigo submetido a inoculação de Azospirillum

2000 ◽  
Vol 35 (2) ◽  
pp. 401-411 ◽  
Author(s):  
AGOSTINHO DIRCEU DIDONET ◽  
OSVALDO DOS SANTOS LIMA ◽  
ANDRÉ ALESSANDRO CANDATEN ◽  
OSMAR RODRIGUES
Keyword(s):  
Triticum Aestivum ◽  
Azospirillum Brasilense ◽  
Triticum Aestivum L ◽  
Azospirillum Lipoferum

Estudou-se, em condições de campo, o efeito de inoculante turfoso em pó contendo bactérias do gênero Azospirillum no rendimento de grãos e na remobilização de N e de biomassa para os grãos de trigo (Triticum aestivum L.), cultivar Embrapa 16. Usaram-se como inoculantes, a estirpe de Azospirillum brasilense 245 e o isolado 10 de Azospirillum lipoferum. Em cada tratamento de inoculação, e também sem inoculação, aplicaram-se diferentes doses de N em diferentes estádios de desenvolvimento das plantas, distribuídos em blocos ao acaso com parcelas subdivididas. Na antese e na maturação fisiológica, avaliaram-se o acúmulo de massa seca e N total nas diferentes partes da planta. Na colheita, além do rendimento de grãos, avaliaram-se também o índice de colheita para biomassa e para N, os principais componentes do rendimento e o teor de N total de grãos. Os resultados ainda preliminares evidenciaram que, mesmo não havendo efeito da inoculação no rendimento de grãos, houve um melhor alocamento de N e de biomassa para os grãos, resultando em maior massa de mil grãos e em menor quantidade de N restante na palha das plantas na maturação fisiológica. Esses efeitos resultaram de um menor número de espigas m-2, provavelmente devido à morte de afilhos, fator que determinou maior disponibilidade de N e de biomassa às espigas e grãos restantes.

The moss family Rhachitheciaceae (Dicranales, Bryophyta) in Thailand

Phytotaxa ◽  
2021 ◽  
Vol 520 (3) ◽  
pp. 279-284
Author(s):  
SAHUT CHANTANAORRAPINT ◽  
NILOBON SEVANAKUN ◽  
ORAWANYA SUWANMALA ◽  
PHIANGPHAK SUKKHARAK ◽  
NARIN PRINTARAKUL ◽  
...  
Keyword(s):  
New Genus ◽  
Type Locality ◽  
Herbarium Specimens ◽  
Taxonomic Study ◽  
New Genus And Species ◽  
Key To Species ◽  
Field Surveys ◽  
Taxonomic Descriptions ◽  
The Family

A taxonomic study of the family Rhachitheciaceae in Thailand is presented based on newly collected materials from field surveys and herbarium specimens. Two species are recognized, including Hypnodontopsis spathulata and Rhachithecium perpusillum. Hypnodontopsis spathulata, previously known only from the type locality, is reported here as a new genus and species record for Thailand. A key to species, taxonomic descriptions and illustrations are provided. In addition, the lectotype of Zygodon perpusillus (=Rhachithecium perpusillum) is also designated here.

scholarly journals A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov.

1978 ◽  
Vol 24 (8) ◽  
pp. 967-980 ◽  
Author(s):  
Jeffrey J. Tarrand ◽  
Noel R. Krieg ◽  
Johanna Döbereiner
Keyword(s):  
Thermal Denaturation ◽  
New Genus ◽  
Free Medium ◽  
Dna Homology ◽  
Azospirillum Lipoferum ◽  
Dna Base Composition ◽  
Homology Groups ◽  
Group I ◽  
Dna Base ◽  
Group Ii

Sixty-one strains of the root-associated nitrogen fixer Spirillum lipoferum exhibited a similar morphology in peptone–succinate salts medium: vibrioid cells having a diameter of 1.0 μm. When grown in broth the cells had a single polar flagellum, but when grown on agar at 30 °C lateral flagella of shorter wavelength were also formed. The DNA base composition was 69–71 mol % guanine + cytosine when determined by thermal denaturation. DNA homology experiments indicated the occurrence of two distinct but related homology groups: 46 strains were in group I and 15 strains were in group II. Group II strains were distinguished by their ability to use glucose as a sole carbon source for growth in nitrogen-free medium, by their production of an acidic reaction in a peptone-based glucose medium, by their requirement for biotin, and by their formation of wider, longer, S-shaped or helical cells in semisolid nitrogen-free malate medium. The results indicate that two species exist, and on the basis of their characteristics it is proposed that they be assigned to a new genus, Azospirillum. Strains belonging to group II are named A.lipoferum (Beijerinck) comb, nov., while those belonging to group I are named A.brasilense sp. nov. Strain Sp 59b (ATCC 29707) is proposed as the neotype strain for A. lipoferum, and strain Sp 7 (ATCC 29145) is proposed as the type strain for A. brasilense.

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