Actinomycetes

because they do not have a nuclear membrane, nuclear kernels, only nuclear material, so also belong to the original nuclear organisms, usually classified in the bacterial door. Its main features are: the bacteria are irregular branching of the silky body, but the mycelium is not separated, therefore, should be regarded as a single-cell structure. The mycelium of the line-letting bacteria is usually divided into two parts: the base-inner mycelium and the gas-based mycelium. The former into the
culture
-based (or substitut) to absorb nutrients, so also known as nutritional mycelium, they are mostly yellow, orange, red, purple, blue, green, gray, black and other colors, but also colorless. Gas mycelium is developed from the base to a certain stage, outstretched
ficial base
surface of the mycelium, generally thicker than the base mycelium, straight branches, or curved. Gas mycelium differentiates spores when it matures. Spore silk has a variety of shapes, some wheeled, some loose or tight spiral, etc. Spore silk can break into many spherical, oval, rod-shaped spores. So spores are reproductive mycelium. Spores disperse backward and germinate into new mycelium under suitable conditions. Line bacteria are mostly oxygen-demanding breathing, and mostly rotting, widely found in the soil, but also in fresh water and seawater. The vast majority of species are suitable for living in neutral partial alkalis (pH6.8
to
7.5
), with tens to tens of millions to tens of millions of spores per g of soil. In particular, the largest number of streptomyces, accounting for about
of the total number of
70
90
%. Line bacteria can produce a variety of
antibiotics
and enzymes. There are about 2500
known
antibiotics, of which 56 percent are produced by
of
. Such as streptomycin, chloramphenico, tomycin, kimmycin, tetracycline, etc., has been widely used in medicine. In addition, it can also be used
production
vitamins, steroids
compounds

conversion
, oil dewaxification, sewage treatment and so on. But there are also a few types of diseases that can cause human and animal diseases, such as some skin diseases and lung infections. Because of its different morphological and general bacteria and its important medical and economic value, many scholars often describe and study it as an independent class of prokernel organisms.