Crop Knowledge Master Fungi

Ascochyta Primer

General Information Summary
Pathogens & Hosts Taxonomy Characteristics Disease Types Management Graphics References

Authors

Andrew K. Gonsalves, Educational Specialist

Stephen A. Ferreira, Extension Plant Pathologist

Department of Plant Pathology, College of Tropical Agiculture and Human Resources

University of Hawaii at Manoa

PATHOGENS & HOSTS

Over seven Ascochyta species have been reported to occur in Hawaii (Raabe, et al., 1981). The following is a list of the reported pathogens from this genus (Ascochyta) and the hosts they infect. The list is organized by the scientific name of the pathogen species (CAPITAL LETTERS), followed by the various susceptible plant hosts. Words in blue indicate what symptom or disease a given pathogen causes on the listed hosts.

ASCOCHYTA BOLTSHAUSERI

lima bean (Phaseolus limensis)

ASCOCHYTA CARICAE

Stem-End Rot:

papaya (Carica papaya)

ASCOCHYTA CHRYSANTHEMI

Ray Blight:

florist's chrysanthemum (Chrysanthemum morifolium)

ASCOCHYTA IMPERFECTA

Black Stem and Leafspot:

alfalfa (Medicago sativa)

ASCOCHYTA PINODES

Ascochyta Blight:

pea (Pisum sativum)

edible-podded pea (Pisum var. macrocarpon)

ASCOCHYTA PISI

Leaf and Pod Spot:

pea (Pisum sativum)

ASCOCHYTA RHEI

Leafspot:

rhubarb (Rheum rhaponticum)

ASCOCHYTA SP.

Stem Spot:

Tangier pea (Lathyrus tingitanus)

Other:

pea (Pisum sativum)

TAXONOMY

KINGDOM: Mycetae (fungi)

DIVISION: Eumycota (eumycetes)

SUBDIVISION: Deuteromycotina (The imperfect fungi)

CLASS: Coelomycetes

ORDER: Sphaeropsidales

GENERAL CHARACTERISTICS

No information is available for this section at the moment, please check future Knowledge Master Versions.

TYPES OF DISEASES

No information is available for this section at the moment, please check future Knowledge Master Versions.

MANAGEMENT

No information is available for this section at the moment, please check future Knowledge Master Versions.

GRAPHICS

Below is a list of graphics that are available for this Genus:

Ascochyta blight of cotton

Ascochyta rough spot of sorghum

REFERENCES

Agrios, G.N. 1988. Plant Pathology, 3rd edition. Academic Press, Inc: San Diego. 803 pp.

Corlett, M. 1991. An Annotated List of the Published Names in Mycosphaerella and Sphaerella (Mycologia Memoir No. 18). J. Cramer: Berlin. 328 pp.

Farr, , D.F., G.F. Bills, G.P. Chamuris, and A.Y. Rossman. 1989. Fungi on Plants and Plant Products in the United States. APS PRESS: St. Paul, Minnesota. 1252 pp.

Raabe, Robert D., Ibra L. Conners, and Albert P. Martinez. 1981. Checklist of Plant Diseases in Hawaii. Hawaii Institute of Agriculture and Human Resources, College of Tropical Agriculture and Human Resources, University of Hawaii (Information Text Series 022).

Streets, R.B. 1982. The Diagnosis of Plant Diseases: a field and laboratory manual emphasizing the most practical methods for rapid identification. The University of Arizona Press: Tucson, Arizona.

Tomilin, B.A. 1979. Opredelitel'gribov roda Mycosphaerella Johans. 319 pp.

 

 

JUNE 1994

 

1-ASCOCH

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