Which disease in sugarcane is caused by phytoplasma?
Which disease in sugarcane is caused by phytoplasma?
Ramu stunt disease of sugarcane (SCRS) is known to occur in Papua New Guinea. This disease is associated with a SCWL-related phytoplasma and is presumed to be naturally spread by the leafhopper Eumetopina flavipes. Sugarcane green grassy shoot (SCGGS) is a newly discovered phytoplasmal disease of sugarcane in Thailand.
What does phytoplasma do?
Phytoplasmas infect plants and insects. They are spread by insects through their feeding activities which inject the pathogen into the phloem of the plants. The pathogen causes a host of symptoms, most of which are all potentially damaging to plant health.
How do you get rid of phytoplasma?
Other management strategies such as rouging of infected plants, adjustment of date in sowing, use of clean propagating material, rotation with non-host crops, and removal of weeds coupled with vector control are effective methods for the containment of phytoplasma-associated diseases.
What is phytoplasma in plant pathology?
Phytoplasmas are pathogens of agriculturally important plants, including coconut, sugarcane, and sandalwood, in which they cause a wide variety of symptoms ranging from mild yellowing to death. Phytoplasmas are most prevalent in tropical and subtropical regions.
How do you control wilt in sugarcane?
Management
- Select the seed material from the disease-free plots.
- Avoid the practice of ratooning in diseased fields.
- Burn the trashes and stubbles in the field.
- Grow coriander or mustard as a companion crop in the early stages of crop.
What is ratoon stunting?
Ratoon Stunting Disease (RSD) was first identified as a disease (on a world basis) in Mackay in 1944. Caused by a bacterium that lives in the vascular system of the cane plant, the disease restricts the plant’s ability to carry water – leading to lower yields.
What is phytoplasma and spiroplasma?
Summary. Spiroplasma and “Candidatus Phytoplasma” comprise two genera of insect-transmitted plant pathogens that belong to the class Mollicutes (trivial name, mycoplasmas) within the Gram-positive bacteria.
What is the difference between phytoplasma and bacteria?
Phytoplasmas are single-celled organisms descended from bacteria, but they have lost the cell wall. They are considered mollicutes (“soft skin”), and able to change shape in response to their environment. Phytoplasmas are obligate parasites that only live in the phloem cells of plants or in their insect vectors.
What is difference between mycoplasma and phytoplasma?
The main difference between mycoplasma and phytoplasma is that the mycoplasma refers to pleuropneumonia-like organisms (PPLOs), which can be parasitic in humans, animals, and plants whereas the phytoplasma refers to mycoplasma-like organisms (MLOs), which can be parasitic in plant phloem tissue and some insects.
How are phytoplasma different from bacteria?
Phytoplasma mali
Candidatus Phytoplasma sacchari
Phytoplasma/Lower classifications
How do you control leaf scald in a sugarcane?
In the field, spraying of benomyl, fentin acetate, edifenphos, and validamycin significantly reduce the incidence of leaf scald. Foliar application of captafol, mancozeb, and copper oxychloride also reduces the incidence and severity of the fungal disease.