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National Invasive Species Information Center
U.S. Department of Agriculture
  1. Home
  2. Terrestrial Invasives
  3. Terrestrial Pathogens and Diseases
  4. Sweet Orange Scab

Sweet Orange Scab

Scientific Name

Elsinoë australis Bitancourt and Jenkins (CABI)

Common Name

Sweet orange scab

Synonym

Sphaceloma australis Bitancourt and Jenkins (CABI)

Native To

South America (Kunta et al. 2013)

Date of U.S. Introduction

2010 (Kunta et al. 2013)

Means of Introduction

Most likely through the movement of infected nursery stock (APHIS 2010)

Impact

Fungus affecting the fruit of sweet orange and mandarin cultivars (Chung 2011)

Sweet orange scab

Sweet orange scab, lesions on a satsuma (mandarin)

Credit

Photo by Don Ferrin; Lousisana State University Agricultural enter

Source
Invasive.org

Find more images

Spotlights

  • APHIS Adds Baldwin and Mobile Counties in Alabama to the Domestic Sweet Orange Scab Quarantine Area

    • Dec 10, 2021

    • USDA. Animal and Plant Health Inspection Service.

    • Effective immediately, the Animal and Plant Health Inspection Service (APHIS), in cooperation with the Alabama Department of Agriculture and Industries (ADAI), is establishing a quarantine for Elsinoë australis, the fungal causal agent of sweet orange scab (SOS), in all of Baldwin and Mobile Counties in Alabama to prevent the spread of the disease.

      Elsinoë australis was first detected in the United States in July 2010; and with these recent detections, is known to occur in Arizona, Florida, Louisiana, Mississippi, Texas, and portions of California and Alabama. This Federal Order supersedes Federal Order, DA-2016-55, but does not change the requirements for interstate movement of regulated articles from these quarantine areas. A description of all current SOS quarantine areas, Federal Orders, and other supporting regulatory documents may be found on the APHIS website.

  • You Can Help Prevent Citrus Disease - Story Map

    • USDA. Animal and Plant Health Inspection Service.

    • See related resource: Data Visualization Tools to explore plant and animal health management data and interactive story maps

Distribution / Maps / Survey Status

Federally Regulated

  • Citrus Federal Quarantine Boundary Viewer

    • USDA. Animal and Plant Health Inspection Service.

    • Select layer to view quarantine by species (Asian citrus psyllid, citrus black spot, citrus canker,  citrus greening, sweet orange scab).
      See related resource: Data Visualization Tools to explore plant and animal health management data and interactive story maps

  • Citrus Regulated Articles

    • USDA. APHIS. Plant Protection and Quarantine.

    • Contains the requirements for moving fruit, nursery stock, or other regulated articles for several citrus pests and diseases.

  • Federal Quarantines Descriptions (Citrus Diseases)

    • USDA. APHIS. Plant Protection and Quarantine.

    • Contains the legal description of current federal quarantine areas for several citrus pests and diseases (Asian citrus pysllid, citrus black spot,  citrus canker, citrus greening, sweet orange scab),  Users can search by state and pest to determine the quarantine area(s) by state and territories.

Videos

All Resources

View and Filter All Sweet Orange Scab Resources

Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Partnership
Federal Government

  • APHIS Modifies the Conditions for the Interstate Movement of Citrus Fruit from Areas Quarantined for Sweet Orange Scab

    • Jun 7, 2022

    • USDA. Animal and Plant Health Inspection Service.

    • Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is modifying the conditions under which citrus fruit may be moved interstate from areas quarantined for sweet orange scab (SOS) when destined for processing or packing in a commercial citrus-producing state without a state-wide SOS quarantine.

  • Sweet Orange Scab

    • USDA. APHIS. Plant Protection and Quarantine.

    • Provides comprehensive sweet orange scab information including: what to look for, how to prevent this disease and how it is treated. Also provides image gallery and information how to report signs of citrus disease. And provides control information including: current status and regulatory information. 

State and Local Government
Academic
Citations