The Identity and Perfect State of Colletotrichum graminicola

Mycologia ◽  
1975 ◽  
Vol 67 (1) ◽  
pp. 56 ◽  
Author(s):  
Demetrios J. Politis
Keyword(s):  
Perfect State ◽  
Colletotrichum Graminicola

Concept of Power Decentralization in Political Science and Approaches to its Methodological Study

2017 ◽  
pp. 229-235
Author(s):  
Halyna Kuzub
Keyword(s):  
Political Science ◽  
Moral Education ◽  
Symbolic Interactionism ◽  
Western Europe ◽  
Central Government ◽  
Local Level ◽  
Perfect State ◽  
Political Ideas ◽  
The Usa ◽  
Structural Functionalism

The problem of power decentralization is up to date in a modern political science. We can trace its historical genesis first in European and further in the USA political ideas. Decentralization of power was considered along with the study of a perfect state system, civil society and local self-government. It is argued that the major part of successful process of power decentralization in the Western Europe was due to the idea nature for their political culture. The article attempts to retrace the history of the idea of power decentralization. As a background of the investigations of such thinkers as J. Bodin, J. Althusius, J. Locke, J.-J. Rousseau, C.-L. Montesquieu, R. Owen, C. Fourier, J. S.Mill, T. Jefferson, A. de Tocqueville and M. Dragomanov were thoroughly investigated. The paper also considers the modern definitions of power decentralization. Likewise the value of structural functionalism, symbolic interactionism and constructivism are argued in terms of further surveys of power decentralization. To conclude, the author opines that civil servants training, their theoretical teaching and moral education have to become the main objectives in perspective investigations. Furthermore, the success of power decentralization depends not only on devoting authority by central government, but also on capacity of its implementation by deputies on the local level. Keywords: Decentralization of power, deconcentration of power, administrative and political decentralization, classical and non-classical philosophy, structural functionalism, symbolic interactionism, construc-tivism

scholarly journals Transcriptomics differentiate two novel bioactive strains of Paenibacillus sp. isolated from the perennial ryegrass seed microbiome

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tongda Li ◽  
Ross Mann ◽  
Jatinder Kaur ◽  
German Spangenberg ◽  
Timothy Sawbridge
Keyword(s):  
Nitrogen Fixation ◽  
Secondary Metabolite ◽  
Perennial Ryegrass ◽  
Fusarium Verticillioides ◽  
In Vitro Assays ◽  
Colletotrichum Graminicola ◽  
Nitrogen Fixation Activity ◽  
Auxin Production ◽  
Paenibacillus Sp

AbstractPaenibacillus species are Gram-positive bacteria that have been isolated from a diverse array of plant species and soils, with some species exhibiting plant growth-promoting (PGP) activities. Here we report two strains (S02 and S25) of a novel Paenibacillus sp. that were isolated from perennial ryegrass (Lolium perenne) seeds. Comparative genomics analyses showed this novel species was closely related to P. polymyxa. Genomic analyses revealed that strains S02 and S25 possess PGP genes associated with biological nitrogen fixation, phosphate solubilisation and assimilation, as well as auxin production and transportation. Moreover, secondary metabolite gene cluster analyses identified 13 clusters that are shared by both strains and three clusters unique to S25. In vitro assays demonstrated strong bioprotection activity against phytopathogens (Colletotrichum graminicola and Fusarium verticillioides), particularly for strain S02. A transcriptomics analysis evaluating nitrogen fixation activity showed both strains carry an expressed nif operon, but strain S02 was more active than strain S25 in nitrogen-free media. Another transcriptomics analysis evaluating the interaction of strains with F. verticillioides showed strain S02 had increased expression of core genes of secondary metabolite clusters (fusaricidin, paenilan, tridecaptin and polymyxin) when F. verticillioides was present and absent, compared to S25. Such bioactivities make strain S02 a promising candidate to be developed as a combined biofertiliser/bioprotectant.

Quantification of substratum contact required for initiation of Colletotrichum graminicola appressoria

2004 ◽  
Vol 41 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Dace Apoga ◽  
John Barnard ◽  
Harold G. Craighead ◽  
Harvey C. Hoch
Keyword(s):  
Colletotrichum Graminicola

Messianism and Protestantism in Brazil's Sertão

1970 ◽  
Vol 12 (3) ◽  
pp. 416-438 ◽  
Author(s):  
Donald Edward Curry
Keyword(s):  
Word Meaning ◽  
Rio Grande ◽  
Religious Movement ◽  
Perfect State ◽  
State Of Affairs

A “messiah,” as the term is used here, is taken to mean a person believing himself to be divinely called, as a result of a dream or a series of visions, to lead a group of people from some catastrophic set of conditions into a more perfect state of affairs. “Messianism” is a term used in a variety of ways but usually to characterize a religious movement led by a messiah. Sertão is a Portuguese word meaning simply “hinterland” or interior and is usually taken to refer to a region in Brazil known as the polígona das sêcas (drought polygon) which extends over an area of the states of Maranhão, Piauí, Ceará, Pernambuco, Rio Grande do Norte, Sergipe, Alagoas, and Bahia subject to periodic and unpredictable droughts.

scholarly journals Chemical researches on the blood, and some other animal fluids

1832 ◽  
Vol 1 ◽  
pp. 416-418
Keyword(s):  
Thoracic Duct ◽  
The State ◽  
Perfect State ◽  
Slight Effect ◽  
Series Of Experiments

The author, after referring to those authorities by which he had been misled into the supposition that the colour of the blood depended on the presence of iron, until he had tried how slight effect it produced by infusion of galls, proceeds to a series of experiments which he has made upon chyle and on lymph, for the purpose of comparing their composition with that of bloody the examination of which is divided into three sections, in which he treats separately of the serum, the coagulum, and the colouring matter. The chyle employed in these analyses was collected by Mr. Brande while assisting Mr. Home and Mr. Brodie in their experiments on different animals; attention being always paid to the interval that had elapsed since the last meal; upon which circumstance its qualities were found to depend more than upon the animal from which it was taken. About four hours after a meal, the chyle is supposed to be in its most perfect state, and is then uniformly white, like milk. At longer periods it becomes more dilute, like milk and water, till at length, when an animal has fasted twenty-four hours, the fluid contained in the thoracic duct is reduced to the state of mere lymph.

scholarly journals The Yeast Signal Sequence Trap Identifies Secreted Proteins of the Hemibiotrophic Corn Pathogen Colletotrichum graminicola

2008 ◽  
Vol 21 (10) ◽  
pp. 1325-1336 ◽  
Author(s):  
Jorrit-Jan Krijger ◽  
Ralf Horbach ◽  
Michael Behr ◽  
Patrick Schweizer ◽  
Holger B. Deising ◽  
...  
Keyword(s):  
Cell Walls ◽  
Leaf Extract ◽  
Signal Sequence ◽  
Stem Rot ◽  
Colletotrichum Graminicola ◽  
In Planta ◽  
Chain Reaction ◽  
Genes Encoding ◽  
Polymerase Chain

The hemibiotroph Colletotrichum graminicola is the causal agent of stem rot and leaf anthracnose on Zea mays. Following penetration of epidermal cells, the fungus enters a short biotrophic phase, followed by a destructive necrotrophic phase of pathogenesis. During both phases, secreted fungal proteins are supposed to determine progress and success of the infection. To identify genes encoding such proteins, we constructed a yeast signal sequence trap (YSST) cDNA-library from RNA extracted from mycelium grown in vitro on corn cell walls and leaf extract. Of the 103 identified unigenes, 50 showed significant similarities to genes with a reported function, 25 sequences were similar to genes without a known function, and 28 sequences showed no similarity to entries in the databases. Macroarray hybridization and quantitative reverse-transcriptase polymerase chain reaction confirmed that most genes identified by the YSST screen are expressed in planta. Other than some genes that were constantly expressed, a larger set showed peaks of transcript abundances at specific phases of pathogenesis. Another set exhibited biphasic expression with peaks at the biotrophic and necrotrophic phase. Transcript analyses of in vitro-grown cultures revealed that several of the genes identified by the YSST screen were induced by the addition of corn leaf components, indicating that host-derived factors may have mimicked the host milieu.

Early interactions, adhesion, and establishment of the infection court by Erysiphe graminis

1995 ◽  
Vol 73 (S1) ◽  
pp. 609-615 ◽  
Author(s):  
Ralph L. Nicholson ◽  
Hitoshi Kunoh
Keyword(s):  
Hydrophobic Surface ◽  
Surface Hydrophobicity ◽  
Infection Process ◽  
Erysiphe Graminis ◽  
Hydrophilic Surface ◽  
Colletotrichum Graminicola ◽  
Appressorium Formation ◽  
Barley Leaf ◽  
Powdery Mildew Pathogen ◽  
Suitable Substratum

The establishment of a fungal pathogen on the surface of its host is essential to the success of the infection process. For many fungi, establishment on the host is an active process that may depend on recognition of the host surface through chemical or topographic signals. Events that allow for establishment may be considered to represent the "preparation of the infection court" by the pathogen. This sometimes involves the adhesion of the pathogen to the host and possibly the alteration of the host's surface topography or chemistry. Adhesion is often presumed to be a single, chemically mediated event associated with germ tube or appressorium formation. However, adhesion of ungerminated propagules may also occur, and evidence suggests that it is mediated by the release of adhesive materials directly from the propagule upon contact with a suitable substratum. Fungi may require either a hydrophobic or a hydrophilic surface to initiate the infection process. The barley powdery mildew pathogen, Erysiphe graminis, requires a hydrophilic surface for appressorium formation, yet the barley leaf is extremely hydrophobic. The problem is resolved by the release of an exudate from conidia that makes the hydrophobic leaf surface hydrophilic. In contrast, Colletotrichum graminicola requires a hydrophobic surface for the initiation of its infection process. Ungerminated conidia of this fungus release materials that allow for the rapid adhesion of conidia, which ensures that germination and appressorium formation occur, initiating the infection process. For both fungi, these events happen well in advance of germination and establish the pathogen at the site of the infection court. Key words: adhesion, cuticle, cutinase, surface hydrophobicity, infection process.

The taxonomical identity of the perfect state of Pyricularia grisea and its allies

1978 ◽  
Vol 56 (2) ◽  
pp. 180-183 ◽  
Author(s):  
H. Yaegashi ◽  
S. Udagawa
Keyword(s):  
Magnaporthe Grisea ◽  
Single Species ◽  
Causal Agent ◽  
Blast Disease ◽  
Stem Rot ◽  
Pyricularia Grisea ◽  
Perfect State ◽  
Conidial State

Magnaporthe grisea is proposed as a comb.nov. for Ceratosphaeria grisea Hébert, the perfect state of Pyricularia grisea (Cke.) Sacc. Pyricularia grisea is very close morphologically to P. oryzae Cav., well known as the causal agent of blast disease on rice. Magnaporthe was recently established in the Diaporthales to accommodate a single species, M. salvinii (Catt.) Krause & Webster, which was described as the cause of stem rot of rice with conidial state known as Nakataea sigmoidea Hara. Based on a review of the taxonomic characters of Ceratosphaeria grisea, the desirability is discussed of its inclusion in the genus Magnaporthe.

scholarly journals Genetic Variation Among Colletotrichum graminicola Isolates from Four Hosts Using Isozyme Analysis

Plant Disease ◽  
2004 ◽  
Vol 88 (4) ◽  
pp. 402-406 ◽  
Author(s):  
B. J. Horvath ◽  
J. M. Vargas
Keyword(s):  
Genetic Variation ◽  
Genetic Distance ◽  
Geographic Origin ◽  
Creeping Bentgrass ◽  
Genetic Distances ◽  
Colletotrichum Graminicola ◽  
Annual Bluegrass ◽  
Close Relationship ◽  
Host Origin ◽  
Serious Disease

Anthracnose basal rot (ABR) is a serious disease of turfgrasses that is caused by the pathogen Colletotrichum graminicola. The relationships of isolates causing ABR on turfgrasses to those causing disease on important crop hosts (maize, sorghum) remain unresolved. Genetic variation among isolates from annual bluegrass, creeping bentgrass, maize, and sorghum was evaluated based on host origin and geographic origin. Isozymes were used to estimate the genetic variation of the isolates. Five enzyme systems comprising 16 alleles from 5 loci were used. Allele frequencies, genetic distance, and linkage disequilibrium values were calculated for isolates based on both host and geographic origin. Isolates from creeping bentgrass and annual bluegrass were the most closely related based on Nei's genetic distance, while isolates from maize and sorghum were the most distantly related, consistent with their known species-level relationship. Isolates from annual bluegrass and creeping bentgrass had different genetic distances to isolates from both maize and sorghum. Annual bluegrass isolates from different geographic regions had the smallest genetic distance values observed in this study, indicating a very close relationship regardless of geographic origin. Based on these data, it appears that host origin, not geographic origin, plays a more important role in the genetic diversity of these fungi.

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