What is Puccinia spp?

What is Puccinia spp?

Puccinia are fungi which cause the plant diseases commonly known as rusts. They belong to the Pucciniales order (formerly called Uredinales), which represents one of the largest group of Basidiomycetes (Hiratsuka and Sato 1982; Morris et al. 2013).

What is the division of Puccinia?

Puccinia is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts. The genus contains about 4000 species.

How do you identify a Puccinia?

poarum results in large, circular, yellow or orange-red spots that protrude from the undersides of the leaves,. The spots often have a purple margin and sometimes a central hole. On the lower leaf surface, 20-30 cup-shaped aecia of the fungus form on each gall.

What disease does Puccinia cause?

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 Puccinia unicellular or multicellular?

Puccina is a genuine containing about 4000, distinguishable by their appearance, they are plant pathogens which are commonly known as rusts. The Puccina is a multicellular fungus. They belong to the class “pucciniomycetes”.

Who identify the two host of Puccinia in India?

Puccinia graminis ➢It is an obligate parasite of wheat causing stem rust disease. ➢Its life cycle consists of two hosts namely, Wheat – Primary host Barberry – Secondary host ➢Stem rust affects parts of plants that are above ground. ➢In wheat it results in formation of brown to black elongated pustules.

Is Puccinia an Ascomycetes?

No, Puccinia is a basidiomycete, commonly called rust fungus. Also Check: Rhizopus. Penicillium.

How many types of spores are found in the life cycle of Puccinia?

Puccinia graminis tritici produces five different types of spores in its life cycle. These are uredospore, teleutospore, basidiospore, pycniopore and aeciospore.

Which disease is caused by Puccinia graminis?

Stem rust, also known as cereal rust, black rust, red rust or red dust, is caused by the fungus Puccinia graminis, which causes significant disease in cereal crops. Crop species that are affected by the disease include bread wheat, durum wheat, barley and triticale.

Who is the father of wheat rust?

One of the most notable adversaries of wheat rust was Norman Borlaug. Nicknamed the “Father of the Grain Revolution,” Borlaug crossbred disease-resistant strains of wheat.

Is hyphae Septate or Nonseptate?

Hyphae that have walls between the cells are called septate hyphae; hyphae that lack walls and cell membranes between the cells are called nonseptate or coenocytic hyphae), As hyphae continue to grow, they form a tangled network called a mycelium.

What is Puccinia fungi?

The genus Puccinia is cosmopolitan in distribution and is a parasitic fungus causing diseases on many crop plants such as wheat, barley, oats, etc., and causes great loses to the cultivated crops.

How does Puccinia graminis reproduce?

C. REPRODUCTION:- Puccinia (P. graminis tritici) reproduces by production of spores. Different types of spore formation can be observed in the life cycle. These are uredospores, teleutospores, basidiospores, pycniospores and aeciospores.

What is the difference between uredospores and teleutospores?

Each teleutospore is binucleate, two-celled, spindle shaped and thick walled structure. Each cell of the teleutospore contains two nuclei i.e., dikaryotic (n+n) when young which fuse together at maturity to form a single diploid nucleus (2n). The teleutospores are more destructive than the uredospores.

What is the economic importance of Puccinia pustularis?

D. ECONOMIC IMPORTANCE:- Puccinia is one of the parasitic fungal genus which is of much economic concern, because of its ability to produce rust disease on many cereal crops.