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Friday, May 15, 2020 | History

2 edition of Morphological studies of the genus Cercospora found in the catalog.

Morphological studies of the genus Cercospora

by Wilhelm Gerhard Solheim

  • 108 Want to read
  • 21 Currently reading

Published in Urbana, Ill .
Written in English


Edition Notes

Statementwith four plates, by Wilhelm Gerhard Solheim
SeriesIllinois biological monographs -- v. 12, no. 1
Classifications
LC ClassificationsQK625.C4 S6 1930
The Physical Object
Pagination84 p.
Number of Pages84
ID Numbers
Open LibraryOL24605970M
OCLC/WorldCa765911

Cercospora beticola is a fungal plant pathogen which typically infects plants of the genus Beta, within the family of Chenopodiaceae. It is the cause of Cercospora leaf spot disease in sugar beets, spinach and swiss chard. Of these hosts, Cercospora leaf spot Family: Mycosphaerellaceae. Diseases of soybean caused by Cercospora spp. are endemic throughout the world’s soybean production regions. Species diversity in the genus Cercospora has been underestimated due to overdependence on morphological characteristics, symptoms, and host associations. Currently, only two species (Cercospora kikuchii and ogmaexpo.com) are recognized to infect soybean; ogmaexpo.com by:

host genus or some allied host genera of a single family (Table 2).The reported genus Cercospora was introduced by Fresenius with Cercospora penicillata as the type species. Since then over species were reported and characterized and were compiled in the book Monograph of the Genus Cercospora by Chupp (). He proposed a broad. Nigrospora sphaerica is an airborne filamentous fungus in the phylum Ascomycota. It is found in soil, air, and plants as a leaf pathogen. It can occur as an endophyte where it produces antiviral and antifungal secondary metabolites. Sporulation of N. sphaerica causes its Class: Sordariomycetes.

Angular leaf spot of Phaseolus vulgaris is a serious disease caused by Phaeoisariopsis griseola, in which two major gene pools occur, namely Andean and ogmaexpo.comce analysis of the SSU region of nrDNA revealed the genus Phaeoisariopsis to be indistinguishable from other hyphomycete anamorph genera associated with Mycosphaerella, namely Pseudocercospora and ogmaexpo.com by: 1. Habit and Habitat of Cercospora. Cercospora is a very large genus of family Dematiaceae. It includes about form-species. Majority of the species are parasitic and cause leaf spot or tikka disease of economically important plants.


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Frank K. Logan and Dr. F. B. Cogswell communication from the President of the United States transmitting two communications from the Comptroller General of the United States, submitting estimates of appropriations in the sum of $78.85, to pay claims for damages or losses of privately owned property.

Frank K. Logan and Dr. F. B. Cogswell communication from the President of the United States transmitting two communications from the Comptroller General of the United States, submitting estimates of appropriations in the sum of $78.85, to pay claims for damages or losses of privately owned property.

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Morphological studies of the genus Cercospora by Wilhelm Gerhard Solheim Download PDF EPUB FB2

TheconidiaofCercosporaareofseveraldistinctmorphologicaltypes. Certain species, e.g., C. acalyphae Peck (Fig. 2), have conidiaof which the point of attachment is as. Get this from a library. Morphological studies of the genus Cercospora. [W G Solheim]. A thorough study of this group of fungi is necessary to determine the ultimate status of the species involved.

The type species of Didymaria is D. didyma (Ung.) Schroet. This species (Fig. 16) is a Ramularia with two-celled clavate conidia. This conidial type is also found in Cercospora.

Morphological studies of the genus Cercospora, 12 Welcome to the IDEALS Repository. JavaScript is disabled for your browser. Some features of this site may not work without it. Cercospora (Mycosphaerellaceae) is a large genus of fungi comprising many important plant pathogens. In recent years DNA-based studies have revealed multiple genera of cercosporoid fungi being poly- and paraphyletic.

Among these genera, the genus Cercospora has always been perceived as monophyletic. Around species were primarily described within the genus Cercospora (Pollack, ). In latter studies, species were confirmed to belong to the genus Cercospora, whereas were unrecognizable based on the morphological characters and symptoms, thus were designated as Cercospora apii sensu lato (Crous and Braun, ).

Bakhshi M, Arzanlou M, Babai-Ahari A – Morphological and molecular characterization of Cercospora zebrina from black bindweed in Iran. Plant Pathology & Quaranti ne 2(2), –doi.

The genus Cercospora was erected by Frensious (). Etymologically the generic name means a fungus has obclavate (Tail shaped) spores. The species concept and taxonomy of Cercospora are based upon morphological criteria, primarily the dimensions.

Abstract. Twenty morphological characters of thirty species of Cercospora, collected in the Sudan, were used for a quantitative numerical classification.

This revealed, 80% overall similarity between C. arisaemae on Abutilon sp. and C. gossypina on Gossypium hirsutum, 75% overall similarity between C. cucurbitae on Cucumis sativus and ogmaexpo.com by: 2.

ADVERTISEMENTS: In this article we will discuss about the morphology and vegetative structures of cercospora. Morphology of Cercospora: Cercospora: Common Species: ADVERTISEMENTS: Cercospora arachidicola, C.

beticola, C. nicotianae, C. personata and C. apii. Occurrence: It commonly occurs parasitically on many plants of economic importance, and causes the leaf spot disease on.

The genus Cercospora represents a group of important plant pathogenic fungi with a wide geographic distribution, being commonly associated with leaf spots on a broad range of plant hosts. The goal of the present study was to conduct a morphological and molecular phylogenetic analysis. Cercospora cryptomeriicola Sawada on Cryptomeria japonica is transferred to the genus Pseudocercospora, based on the morphological characteristics of the type specimen and newly collected ogmaexpo.com by: 1.

Dec 01,  · The genus Cercospora includes many important plant pathogens that are commonly associated with leaf spot diseases on a wide range of cultivated and wild plant species.

Due to the lack of useful morphological features and high levels of intraspecific variation, host plant association has long been a decisive criterion for species delimitation in ogmaexpo.com by: 4.

Introduction. Cercospora Fresen. and Pseudocercospora Speg. are large genera of mostly plant pathogenic fungi, containing over and species names respectively (ogmaexpo.com).The delimitation of species within Cercospora and Pseudocercospora, as well as the circumscription of the genera, has changed since their establishment by Fresenius () and Spegazzini (), ogmaexpo.com by: 5.

Cercospora is a genus of ascomycete fungi. Most species have no known sexual stage, and when the sexual stage is identified, it is in the genus ogmaexpo.com species of this genus cause plant diseases, and form leaf ogmaexpo.com is a relatively well-studied genus of fungus, but there are countless species not yet described, and there is still much to learn about the best-known of the ogmaexpo.com: Dothideomycetes.

In linguistics and psycholinguistics, morphology is the study of the internal structure of words which are the linguistic units that provide the main mapping between form and meaning. Also, Deighton (,), in his investigations on Cercospora and allied genera, focussed his attention on the morphological aspects associated with the liberation of spores, stressing the diagnostic value of the morphology of the mitosporogenous loci and basal scars of the mitospores as criteria for generic ogmaexpo.com by: 1.

Arcang.) is an important vegetable in Serbia, where it is grown on nearly 8, ha. In August~1, ha of carrot fields were inspected in southern Bačka in North Serbia. In nearly 40% of the fields, severe foliar and stem symptoms characteristic of cercospora leaf spot of carrot, caused by Cercospora carotae (Pass.) Solheim (3), were.

The genus Cercospora contains numerous important plant pathogenic fungi from a diverse range of hosts. Most species of Cercospora are known only from their morphological characters in ogmaexpo.comgh the genus contains more than 5 names, very few cultures and associated DNA sequence data are Cited by: All the morphological characteristics evaluated for all the Cercospora specimens from C.

canadensis were equivalent to those described for Cercospora apii sensu lato in Crous & Braun () and for Cercospora conyzae-canadensis in Bakhshi et al., which initially seemed to indicate that these isolates belonged to one of these ogmaexpo.com by: 2.

species-level and/ or genus-level specific- ity has been presented Thus, there exists some question as to whether these organisms should be ascribed to species based upon fungal morphology or host range and symptoms.

On the basis of a morphological study of C. medicaginis Ellis & Everh. on Medicago spp., C. davisii Ellis & Everh. on.Jun 15,  · Various authors discussed the heterogeneity of Cladosporium s.

lat. and proposed new, more natural circumscriptions of this genus (e.g., von Arx, Morgan-Jones & JacobsenMcKemy & Morgan-JonesMorgan-Jones & McKemyBraun b, Partridge & Morgan-Jones).Cited by: COMPARATIVE MORPHOLOGICAL STUDIES ON THE GIRDLES AND LIMB BONES OF THE GENUS PANTHERA OKEN (CARNIVORA: MAMMALIA).

[A. Mandal, 4 b & w Plates] on ogmaexpo.com *FREE* shipping on qualifying ogmaexpo.com: A. Mandal.