This dimension marks whether a pest or disease is currently under formal quarantine restriction. Wikipedia notes that invasive species have "become serious economic, social, and environmental threats worldwide," a threat level that is exactly why some are placed under strict quarantine control. Browsing by quarantine status separates regulated pests and diseases from those that are not.
Facts
Comparison
Typical Transmission or Damage Mode Quarantine Status
Sources
1. Wikipedia: Plant pathogenic bacteria
WikipediaPlant pathogenic bacteria, Mollicutes/phytoplasma sectionQuote, Plant pathogenic bacteria, Mollicutes/phytoplasma section
are normally transmitted by leafhoppers (cicadellids) and psyllids, both sap-sucking insect vectors
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