Long term mutagenesis breeding results in strains

Strain viability decreases and metabolism is slow.

Industrial microbial mutagenesis breeding is a method of inducing genetic mutations in microorganisms through susceptibility factors (such as radiation, chemicals, etc.) to obtain certain useful traits. This technology has a wide range of applications in industry and has the following significance:

1.Improvement of microbial metabolites: Production efficiency can be improved by selecting high-yielding and excellent strains. For example, mutation breeding techniques can be used to obtain mutant strains with higher yields or efficient synthetase enzymes.

2.Improve the resistance and environmental adaptability of strains: After mutagenesis, microorganisms may gain stronger tolerance and adapt to more difficult living conditions, such as extreme environments such as high temperature, low temperature, high salt, and high pressure.

3.Reduce pollution and waste generation: Replacing chemical industry production through microbial metabolism can reduce the generation of toxic and hazardous waste and reduce the impact on the environment.

4.Improving the purity of industrial chemicals: Mutagenesis increases the ability of microorganisms to degrade specific compounds, which can improve the purity of certain chemicals in production.

5.Facilitating the development of new dust-compounding drugs: Microorganisms are one of nature's most abundant chemical factories, and mutagenic strains can produce a variety of useful metabolites that are expected to be the basis for new drug development.

In short, microbial mutagenesis breeding technology has a wide range of applications and important significance in industrial production. By altering the genome of microorganisms, strains that are more conducive to production and application can be obtained, thereby improving the quality and efficiency of industrial products and reducing environmental pollution.

a. The shape is large, the texture is loose, the appearance is dry, opaque, and the shape is loose or tight.

b. The color and structure of the front and back of the colony, and the color and structure of the edge and the center are often inconsistent.

c. The hyphae of molds have the differentiation of vegetative hyphae and aerial hyphae, while the aerial hyphae do not have capillary water, so their colonies must be different from bacteria or yeasts, and are closer to actinomycetes.

The hyphae of mold. The basic unit that makes up the vegetative body of a mold is the hyphae. The hyphae are a kind of tubular filament, which is viewed under a microscope and resembles a transparent hose, and its diameter is generally 3 10 microns, which is about several to dozens of times thicker than the cells of bacteria and actinomycetes.

The hyphae can elongate and produce branches, and the mycelium of many branches are intertwined with each other, which is called mycelium.

According to the presence or absence of a septum in the hyphae, mold hyphae can be divided into two types: non-septal hyphae and septal hyphae. There is no diaphragm in the diaphragm, and the whole mass of mycelium is a single cell that contains multiple nuclei.

This is the type of hyphae possessed by lower fungi. There is a septum in the hyphae, and the hyphae separated by the septum are a cell, and the mycelium is composed of many cells, each cell has one or more nuclei. There are 1 to more small pores in the septum that allow the cytoplasm and nutrients between the cells to communicate with each other.

This is the type of hyphium possessed by higher fungi.