Medical Definitions Medical Definitions and Terminology
What is aster yellows disease? How to control aster yellows? How do you treat aster yellows? Let’s find out about aster yellows celery disease symptoms and treatment guidelines!
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Aster Yellows Celery Disease Definition
Aster yellows celery disease meaning: What is aster yellows celery disease?
Aster yellow is a disease that sometimes affects crops in the Apiaceae family, especially celery and carrot. However, even though the symptoms can be strange and startling, economic losses are rare.
Aster Yellows Celery Disease Causes
What causes aster yellows celery disease? What is the most common cause of aster yellows celery disease?
The aster yellows phytoplasma is what causes aster yellows disease. Phytoplasmas are prokaryotes, like most bacteria, but they belong to a different group called mollicutes. Mollicutes are single-celled organisms that can change shape and don’t have cell walls. Their genomes are also very small. The phloem tissue of their host plants is where phytoplasmas live. This pathogen hurts a wide range of plants, both ones that are grown and ones that grow on their own.
Aster Yellows Celery Disease Symptoms
Signs and symptoms of aster yellows celery disease – What are some symptoms of aster yellows?
Celery leaves show symptoms like yellowing, stunting, and poor growth. Sometimes, the heart of the plant goes bad. In addition, the petioles are very fragile on older plants, and the epidermis peels back and cracks.
The extreme twisting and curling of celery petioles is a sign of the disease. Aster yellows cause leaf chlorosis, the growth of new shoots from the crown, abnormal greening (virescence), and the growth of leaf structures (phyllody) in the flowers of seed crops like carrot, parsnip, and parsley.
Aster Yellows Celery Disease Cycle
The aster leafhopper (Macrosteles fascifrons) is the main insect that spreads the aster yellows phytoplasma. Still, many other types of leafhoppers can also do this. These insects get the aster yellow’s phytoplasma from eating infected crops or weeds like dandelion, plantain, sowthistle, and wild lettuce. After a certain time, the insects can stably pass on the phytoplasma. The phytoplasma grows by splitting or budding in the phloem sieve cells of plants that host it and in the leafhoppers that carry it. This pathogen doesn’t come from seeds.
Aster Yellows Disease Treatment Guidelines
Treatment of aster yellows celery disease – What is the best treatment for aster yellows celery disease?
Rarely do people need control strategies. By getting rid of weeds, you can stop the spread of disease. Some places, like pastures and the edges of rivers or streams, naturally have plants that carry the phytoplasma. You shouldn’t plant celery or other easily affected plants in these places. Using insecticides to eliminate leafhoppers doesn’t usually change how often aster yellows happen.
I hope you understand about aster yellows celery disease symptoms and treatment guidelines.
