What causes rust of wheat Class 8?

What causes rust of wheat Class 8?

Abstract. Leaf rust, caused by Puccinia triticina, is the most common rust disease of wheat. The fungus is an obligate parasite capable of producing infectious urediniospores as long as infected leaf tissue remains alive.

Is rust of wheat is caused by protozoa?

The wheat rust fungi are obligate parasites; that is, they can grow and multiply in nature only on living plant tissue. ... A comparison of the characteristics of the three wheat rusts is presented in Table I. Leaf Rust. Leaf rust, also known as brown rust, is caused by the fungus Puccinia triticina.

What is wheat rust resistance?

Stem rust is an important disease of wheat that can be controlled using resistance genes. The gene SuSr-D1 identified in cultivar 'Canthatch' suppresses stem rust resistance. SuSr-D1 mutants are resistant to several races of stem rust that are virulent on wild-type plants.

What type of organism causes wheat rust?

The pathogen that causes stem rust of wheat (Triticum aestivum) is Puccinia graminis f. sp. tritici.

How does wheat rust affect plants?

Wheat stem rust is a fungal disease caused by the Puccinia graminis f. ... Wheat stem rust can attack all above-ground parts of the plant, including the stem, leaves and inflorescence. Infected wheat plants may also produce shrivelled grain. An untreated infection could reduce grain yield by up to 90 per cent.

Which crop is mainly attacked by the white rust fungi?

White rusts, caused by several species of the fungus Albugo, occur worldwide on beet (garden and sugar), Brussels sprouts, cabbage, cauliflower, Chinese cab- bage, collards, garden cress, horseradish, kale, lettuce, mustards, parsnip, radish, rape, salsify (black and white), spinach, sweet potato, turnip, watercress, ...

What causes white rust in mustard?

White rust is a disease in plants caused by the oomycete Albugo candida or one of its close relatives. Plants susceptible to this disease generally include members of the Brassica family.

How do you fix bacterial leaf spots?

What foliage treatments are available for bacterial leaf spot?

  1. Transplant treatment with streptomycin. ...
  2. Copper sprays and other topical treatments. ...
  3. Plant activator sprays. ...
  4. Biological or microbial products.