plant diseases

• What types of organisms can cause diseases in plants?

  Fungi, bacteria, viruses, insects
• Plants can get deficiency diseases if they lack essential minerals
• Nitrates are essential for making chlorophyll in plants.

  False
• What deficiency can cause stunted growth in plants?

  Nitrate deficiency
• Magnesium ions are needed for making chlorophyll
• Plants with a magnesium deficiency often develop chlorosis, which turns their leaves yellow.
• What are some common symptoms of diseased plants?

  Abnormal growths, discoloration
• When diagnosing plant diseases, the first step is to match the symptoms to a disease in a garden manual
• Steps in diagnosing plant diseases by a plant pathologist

  1️⃣ Take a tissue sample

  2️⃣ Examine under a microscope

  3️⃣ Look for unique antigens

  4️⃣ Run DNA tests
• What is the purpose of monoclonal antibodies in diagnosing plant diseases?

  Detect specific pathogens
• Trial and error is a method where you treat the plant based on suspected deficiencies
• Trial and error involves trying one treatment at a time and observing the results.
• What are the three main types of plant defenses?

  Physical, chemical, mechanical
• A waxy cuticle is a physical defense that prevents pathogen entry
• What chemical defense do plants use to kill bacteria or fungi?

  Antimicrobial substances
• Aspirin is derived from plant chemicals found in willow trees.
• How do thorns and hairs act as mechanical defenses in plants?

  Prevent animals
• Mechanical defenses include leaves that curl or droop when insects land
• Plant defenses are only effective against large organisms like insects.

  False