Trichoderma can control crop diseases in addition to outside, often can promote crop growth records

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Nature has many biological organisms must rely on other nutrients as growth and reproduction purposes, the former is called parasites, which is called the host. Mostly low microbial parasite, known as parasites or parasites. Apart from the host many parasites absorb nutrients, moisture and other growth substances, will emit toxic substances and other metabolites, affect the host lives. The parasitic nature is widespread, many parasites cause diseases cashew nut shelling machine of plants and animals, there are many other fungi and bacteria are parasitic cashew nut shelling machine microorganisms, the formation of ultra-parasitic. Trichoderma mentioned in this article, pathogen and crop triangular relationship between the pathogen may be parasitic or endanger crops, may be parasitic fungi Trichoderma, which is the nature of the parasitic phenomenon is the development of biological control benchmark.
The relationship between pathogens and parasites and host crop relationship, not just the nutrients it needs, parasites often secreted metabolites, toxic substances, hormones cashew nut shelling machine and other substances in the host, triggering host a series of physiological occurrence is not a normal reaction, that is caused by the so-called diseases. cashew nut shelling machine In addition to its own shall have the pathogenic parasite genes, yet to overcome the resistance imposed by the host and the host where the environmental factors adapt in order to reach a parasitic disease caused, so parasites mostly pathogens. Crops and pathogens have to exist in order to cause harm, when the lack of a time, there will be no occurrence of disease. In fungi, for example, methods of crop pathogen infection directly from the spores germinate, forming bacteria winding ropes, or after the formation cashew nut shelling machine of adhesion by the spore germination invasive plants and other ways.
Interfere cashew nut shelling machine with the absorption of root - rot fungus belonging to this class, including cashew nut shelling machine many can survive in the soil fungi and bacteria, because they can lignified roots against mature, these parasitic fungi fungus slightly further than the seedlings, but differentiation sex is not, is still a powerful pathogen. Its many pathways through the wound, with a few exceptions, such as tobacco black root rot mattress directly hyphae invade. How the amount of roots also allows moisture or nutrients vulnerable root rhizosphere substances can also make saprophytic fungi in the soil to become pathogens, such as root secrete more carbohydrates, bacteria can grow some addicted to sugar and cause disease such as Pythium damage sugar cane.
In the cell wall degrading enzymes in general, that the disease in the inhibition of cell wall degrading enzymes play an important role. Alone or in combination chitinase enzymes or polysaccharide degrading enzyme, cashew nut shelling machine can be directly decomposed fungal cashew nut shelling machine cell walls. Lack of chitinase enzyme mutants inhibit pathogenic cashew nut shelling machine spores germinate and disease prevention and treatment cashew nut shelling machine capacity will be reduced. When this enzyme chitinase gene was introduced without strain of E. coli disease control capability, this strain of transgenic soy can reduce the incidence of southern blight. Recently, some transgenic plants contain from Trichoderma chitinase enzyme, resistance to the pathogen and thus to increase. Chitinase enzymes present in Trichoderma in addition to outside, they can still exist in the plant body, actinomycetes, bacteria and other fungi.
Trichoderma can control crop diseases in addition to outside, often can promote crop growth records. cashew nut shelling machine For example, the use of pure wood mold spores or other formulations cultured spores can promote the growth of radish. In addition, Trichoderma increase the variety of flowers and horticultural cashew nut shelling machine crop dry weight, such as marigold, green peppers, periwinkle and morning glory, there are also reports cashew nut shelling machine that it will enable the corn, soybeans, tomatoes, cucumber, strawberries and turf vigorous growth and increased production. I recently test a variety cashew nut shelling machine of melon crops (such as cantaloupe, cucumber, bitter gourd and gourd), also found that a variety of Trichoderma strains can increase the plant roots and root distribution in the soil. Trichoderma beneficial microorganisms to promote plant growth mechanisms, mainly the following: reducing the number of minor or no obvious symptoms of the pathogen hazards; promote crop nutrient uptake; produce the desired plant growth hormone; reduce harmful to plants in soil concentration of the substance; produce vitamins or plant growth substances.
Trichoderma in the prevention and treatment of crop diseases, why can be called superior strain? Is nothing more than the crop adaptability, or promote crop growth, the other on disease prevention and treatment or prevention of disease kinds of strong wide. However, if each of Trichoderma strains having the above characteristics it? The answer is often no. For example, although Trichoderma T95 has a pair of very good cucumber cashew nut shelling machine rhizosphere winding capability, but for disease control capability is not very good. Conversely, Trichoderma T12 disease control ability, but the winding cucumber rhizosphere ability is poor, so only use cell fusion produced by Trichoderma 1295. As for the type of disease prevention and control of each strain cashew nut shelling machine amount, then the control mechanisms cashew nut shelling machine by pathogenic strains of each species or crop adaptability may be. So whether it is an excellent use of the strains strains depends cashew nut shelling machine on the characteristics of the level of understanding, that is, as the test results to judge.
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