Kingdom: Fungi Division: Ascomycota Class: Eurotiomycetes Order: Eurotiales Family: Trichocomaceae Genus: Aspergillus Species: A. niger Aspergillus niger is considered one of the most common species of the genus Aspergillus, which has been widely distributed in soil, decaying vegetation, and indoor environments. It is usually recognized as a black mold, and colonies are often appeared dark brown … Read more
Kingdom: Fungi Division: Ascomycota Class: Eurotiomycetes Order: Eurotiales Family: Trichocomaceae Genus: Aspergillus Species: A. fumigatus Aspergillus fumigatus Aspergillus fumigatus can tolerates high temperatures and can thrives on decaying organic matter, Aspergillus fumigatus is widely distributed in soil, compost, indoor dust, and other environmental niches, where it is routinely detected by air sampling. Aspergillus fumigatus is classified … Read more
Although Aspergillus flavus is widely distributed in soil and decaying plant material, it is most often associated with warm, humid agricultural environments where crops are produced. Aspergillus flavus is classified as a filamentous fungus within the genus Aspergillus. When stored grains (maize/peanuts,cottonseed) are exposed to moisture and heat, contamination is caused frequently by this fungus … Read more
A Desert Ecosystem is a system in which living things (plants, animals, microbes) interact with non-living parts (soil, air, water, temperature) in a region that is extremely dry. It is defined by very low rainfall (often less than about 250 mm per year), and scarcity of moisture is a crucial limiting factor. The system is … Read more
Toxins produced by some notable Algae Dinoflagellates Dinoflagellates produce potent neurotoxins, which affect nervous system of animals and humans, and are often implicated in shellfish poisoning. Brevetoxins are made by Karenia brevis and bind to voltage-gated sodium channels, causing neurotoxic shellfish poisoning (NSP). Saxitoxins (and related paralytic shellfish toxins, PSTs) are produced by Alexandrium and … Read more
What are Brown Algae (Phaeophyceae)? Habitats of Brown Algae Characteristic Features of Brown Algae Classification of Brown Algae Brown Algae Classification Taxonomic Rank Classification Domain Eukaryota Kingdom Chromista Phylum Ochrophyta Class Phaeophyceae Orders Fucales, Laminariales, Dictyotales Families Fucaceae, Laminariaceae, Dictyotaceae Genera Fucus, Laminaria, Dictyota Species Fucus vesiculosus, Laminaria digitata, Dictyota dichotoma Morphology and Structure of … Read more
What is Rhodophyta (Red Algae)? The Rhodophyta (red algae) are a group of mostly marine, photosynthetic, eukaryotic organisms. They are colored red (or shades of red / purple) because of accessory pigments like phycoerythrin (and phycocyanin) which mask the green of chlorophyll. The cells do not have flagella or centrioles at any stage. Unstacked thylakoids … Read more
Algal cultivation means growing algae (microalgae or seaweeds) in controlled or partly controlled environments for useful biomass. The algae are supplied with light, carbon (often CO₂), water and nutrients so growth is promoted. In open ponds (raceway ponds etc.), cultures are exposed to ambient conditions, and mixing is provided to avoid shading and settling. Photobioreactors … Read more
Economic Importance of Algae Overview Algae is a photosynthetic, eukaryotic marine organism. Their size ranges from unicellular microalgae to giant kelp. Algae are characterized by their lack of flowers, formal roots, leaves, or even stems. They can grow anywhere such as in the dirt or on rocks, marine water, freshwater, etc. Algae are variable in shapes, … Read more
The reproduction in Algae is considered to be a fundamental biological process, and it is carried out by different modes which are usually classified into Vegetative, Asexual, and Sexual methods. By vegetative processes, new individuals are produced from somatic parts, and this happens without involvement of spores or gametes, which makes it simple yet very … Read more
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