What food does Alternaria grow on?

They colonise a range of plants including cereals, oilseeds, tomatoes, cucumbers, cauliflowers, peppers, apples, melons, tangerines, oranges, lemons, and sunflower seeds [1,2]. Alternaria colonisation of ripening ears can result in black pointed grain and impact directly on flour colour of bread making wheats [3].

Which disease is caused by Alternaria?

Alternaria alternata – Causes early blight of potato, Leaf spot disease in Withania somnifera and can infest many other plants. It also causes upper respiratory infections in AIDS patients, asthma in people with sensitivity, and has been implicated in chronic rhinosinusitis.

What is Alternaria toxin?

Alternaria toxins are mycotoxins produced by Alternaria species. These fungi cause serious diseases in many crops such as cereals, oil seeds, and fruits. More than 70 Alternaria toxins have been reported and only some of them have been physicochemically characterized.

What is the morphological structure of Alternaria pathogen?

The taxonomy of Alternaria has been based on morphological characteristics such as conidia dimension, color, and septa (longitudinal and transverse); wall ornamentation; beak type and size; conidiophore type, size, and septa; sporulation patterns (in chains or solitary; branched or unbranched); and cultural …

How do you isolate Alternaria?

Collection and isolation of Alternaria species The leaf samples were surface sterilized with 0.5% sodium hypochlorite solution, washed thoroughly with sterile distilled water (SDW) for several times and were placed on potato dextrose agar (PDA) culture medium in Petri dishes for 3–4 days.

Where can Alternaria be found?

Alternaria is often found in soil and on mediums such as plants, cereal grains, grass, corn silage, rotten wood, bricks, canvas, iron, compost, and bird nests.

Is Alternaria a food?

Alternaria has been isolated from a wide range of food products, such as small grain cereals, nuts, tomato fruits, olives, bell peppers, apples, berries, citrus fruits, among others, as well as their derived products.

Where is Alternaria found?

Is Alternaria a parasite?

The observation that saprobic Alternaria species can become parasitic when they meet a weakened host illustrates that the distinction between saprophytic and parasitic behaviour is not always evident. Despite the taxonomic and pathogenic differences between Alternaria species, they cause similar infection patterns.

How does Alternaria reproduce?

Life cycle. Alternaria dianthi reproduces asexually, forming row-like spores off of hyphae. Spores are formed on blisters on the host as well as within the mycelium. The thin, globular spores are spread through water.

What is the shape of conidia in Alternaria?

They are typically club-shaped and are highly septate, having divisions in both vertical and horizontal directions. The spore surfaces are usually smooth, but may have small rounded warts creating a slightly rough surface.

What is habitat of Alternaria?

Alternaria alternata is mainly an outdoor fungus. Alternaria alternata is mainly an outdoor fungus whose spores disseminates in warm, dry air, so in temperate climates and found at higher concentration in dry windy conditions. It may also be found in damp, insufficiently ventilated houses.

What is the class of Alternaria?

DothideomycetesAlternaria / Class

What phylum is Alternaria?

Sac fungiAlternaria / Phylum

Which type of spores are reported in Alternaria?

Spores of Alternaria can be formed singly, but most often in chains. They are typically club-shaped and are highly septate, having divisions in both vertical and horizontal directions. The spore surfaces are usually smooth, but may have small rounded warts creating a slightly rough surface.

Is Alternaria safe to eat?

Alternaria rot is also called black rot when it appears in navel oranges. If you cut infected fruit in half, you will see the rotted area has spread into the core of the fruit. There are several varieties of the Alternaria citric fungi. Most of them do not produce toxins (but you still won’t want to eat the fruit).