Frequent question: Which microorganisms causes yellow vein mosaic of Bhindi?

This disease is caused by a complex consisting of the monopartite begomovirus Bhendi yellow vein mosaic virus (BYVMV, family: Geminiviridae) and a small satellite DNA beta component. BYVMV can systemically infect bhendi upon agroinoculation but produces only mild leaf curling in this host.

Is yellow vein mosaic resistant variety of Bhindi?

It is a high yielding (18.0 t/ha) variety of okra and resistant to Bhendi Yellow Vein Mosaic Virus. Plants are straight having 2-3 branches with completely dark green stem and petioles. Leaves are moderately lobed.

What are the symptoms of yellow vein mosaic of Bhindi?

Symptoms

  • Yellowing of the entire network of veins in the leaf blade is the characteristic symptom.
  • In severe infections the younger leaves turn yellow, become reduced in size and the plant is highly stunted.
  • The veins of the leaves will be cleared by the virus and intervenal area becomes completely yellow or white.

What is the mode of transmission of yellow vein mosaic?

Insects are the mode of transmission of Yellow vein mosaic disease. The whitefly insect is responsible for this disease. The disease is caused by the association of a DNA Beta satellite with a begomovirus.

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What is Pusa Sawani?

Pusa sawani is the disease resistant variety of okra. It is grown in spring, summer and rainy seasons. The fruits that it bears are dark green in colour and are smooth with five ridges. The crops of this variety of okra usually mature within 50 days, starting from the time of sowing.

What is mosaic virus in plants?

A mosaic virus is any virus that causes infected plant foliage to have a mottled appearance. Such viruses come from a variety of unrelated lineages and consequently there is no taxon that unites all mosaic viruses.

What is mosaic formation?

Mosaic formation is the presence of some light and dark green patches in the leaves of plants which is mainly caused by the viral diseases. Leaf rolling is curving the leaves of plants outwards. Due to some diseases the plant which is mostly green in color gets converted into the yellow color plant.

Why do ladies fingers turn yellow?

This is a viral disease occurring on bhendi (Okra/Lady’s Finger). Yellowing of the entire network of veins in the leaf blade is the characteristic symptom. In severe infections, the younger leaves turn yellow to become entirely chlorotic and the plant is highly stunted.

Which of the following disease is caused by a virus?

Viral Infections

Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves.

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What bacteria causes disease in plants?

Most plant pathogenic bacteria belong to the following genera: Erwinia, Pectobacterium, Pantoea, Agrobacterium, Pseudomonas, Ralstonia, Burkholderia, Acidovorax, Xanthomonas, Clavibacter, Streptomyces, Xylella, Spiroplasma, and Phytoplasma.

Which of the following virus causes chlorotic spotting mottling fine vein clearing in Brassica?

The following symptoms of CaMV infection of turnips were observed after infection of turnips with eight strains of five isolates of CaMV: chlorotic spotting, chlorotic mottling, vein clearing, vein banding, leaf stunting, necrotic flecking, senes- cence, and rugosity (distortion).

What is vein clearing virus?

Petunia vein-clearing virus (PVCV) is a plant pararetrovirus that has some features of retrotransposons. It encapsidates dsDNA and has isometric particles and inclusion bodies similar to those of caulimoviruses.

Are microorganisms?

Technically a microorganism or microbe is an organism that is microscopic. … Microorganisms can be bacteria, fungi, archaea or protists. The term microorganisms does not include viruses and prions, which are generally classified as non-living.

Which microorganism causes citrus canker in plants?

Citrus canker is a citrus disease caused by the bacterium Xanthomonas axonopodis. While not harmful to humans, canker significantly affects the vitality of citrus trees, causing leaves and fruit to drop prematurely. A fruit infected with canker is safe to eat, but has reduced marketability as fresh fruit.

What are the diseases caused by microorganisms in plant 8?

Diseases caused by microorganism in plants:

  • Citrus Canker. Disease-causing organism: Xanthomonas axonopodis (Bacterium) …
  • Rust of wheat. Disease-causing organism: Puccinia triticina. …
  • Yellow vein mosaic of bhindi or Okra yellow vein mosaic.