Crop Knowledge Master


Helminthosporium Primer

General Information



Authors

Andrew K. Gonsalves, Educational Specialist

Stephen A. Ferreira, Extension Plant Pathologist

Department of Plant Pathology, CTAHR

University of Hawaii at Manoa


Pathogens & Hosts

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

HELMINTHOSPORIUM CARBONUM

  • corn, maize (Zea mays)

HELMINTHOSPORIUM CIBOTII

  • Cibotium sp.

HELMINTHOSPORIUM GLEICHENIAE

  • false staghorn fern (Dicranopteris linearis)
  • Gleichenia dichotoma

HELMINTHOSPORIUM MAYDIS

Southern Corn Blight:

  • corn, maize (Zea mays)

HELMINTHOSPORIUM ?ORYZAE

Brown Spot:

  • rice (Oryza sativa)

HELMINTHOSPORIUM ?PORTULACAE

Leaf and Stem Blight:

  • purslane (Portulaca oleracea)

HELMINTHOSPORIUM RAVENELII

Sooty Spike:

  • smut grass (Sporobolus africanus)
  • West Indies smut grass (Sporobolus indicus)

HELMINTHOSPORIUM SACCHARI

Leafspot:

  • para grass (Panicum purpurascens)
  • pearl millet (Pennisetum glaucum)
  • napier grass (Pennisetum purpureum)

Other:

  • sugar cane (Saccharum officinarum)

HELMINTHOSPORIUM SOLANI

Silver Scurf:

  • potato (Solanum tuberosum)

HELMINTHOSPORIUM SOROKIANA

Seedling Blight:

  • seaside bentgrass (Agrostis palustris)

HELMINTHOSPORIUM SP.

Brown Spot:

  • rice (Oryza sativa)

Leaf Blight:

  • St. Augustine grass (Stenotaphrum secundatum)

Leaf and Stem Blight:

  • Plectranthus parviflorus

Leafspot:

  • golden-fruited palm (Chrysalidocarpus lutescens)
  • wiregrass (Eleusine indica)
  • English ryegrass (Lolium perenne)
  • banana (Musa acuminata, AAA)
  • bamboo palm (Rhapis excelsa)
  • montbretia (Tritonia sp.)
  • Manilla grass (Zoysia matrella)

Other:

  • molasses grass (Melinis minutiflora)
  • para grass (Panicum purpurascens)
  • sorghum (Sorghum bicolor)
  • corn, maize (Zea mays)

HELMINTHOSPORIUM STENOSPILUM

Brown Stripe:

  • sugar cane (Saccharum officinarum)

HELMINTHOSPORIUM TURCICUM

Leafspot:

  • kikuyu grass (Pennisetum clandestinum)
  • corn, maize (Zea mays)
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Taxonomy

KINGDOM: Mycetae (fungi)

DIVISION: Eumycota

SUBDIVISION: Deuteromycotina (The imperfect fungi)

CLASS: Hyphomycetes

ORDER: Hyphales (Moniliales)

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Characteristics

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

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Disease Types

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

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Management

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

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References

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

JUNE 1994

1-HELMIN

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