Bacteria such as Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium fixes nitrogen from the air in the roots of leguminous plants. Rhizobium is currently being used as a microbial fertilizer. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Harun or Rashid discovered these three species.

Bacteria decompose the dead bodies of plants and animals and mix them with the soil. As a result, soil organic matter increases and fertility increases.

(i) Increase in soil fertility: Bacteria decompose the dead bodies of plants and animals and mix them with the soil. As a result, soil organic matter increases and fertility increases.
(ii) Nitrogen fixation: Bacteria such as Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium fixes nitrogen from the air in the roots of leguminous plants. Rhizobium is currently being used as a microbial fertilizer. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Harun or Rashid discovered these three species.
(iii) Nitrification: In the process of nitrification, nitrite is produced from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) As insecticides: Some bacteria are used as insecticides in the field. For example, Bacillus thuringiensis.
(v) Increase in yield: By applying some bacteria to the field, it was possible to increase the yield of rice by 31.8% and the yield of wheat by 20.8%.
(vi) Creation of improved varieties of crops: Transgenic crops have been created by transferring genes with the help of bacteria. These transgenic crops are of superior quality.
(vii) Production of Organic Fertilizers: At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria. Organic fertilizers are being used instead of chemical fertilizers on the land.
(viii) Fodder or silage making: Paddy straw, grass and leguminous plants are cut into small pieces. The pieces are mixed with chitagur and kept in a sealed container. During the fermentation process Lactobacillus bacteria turn them into high quality cow feed. This cow feed is called silage.
(ix) In jute industry: Jute is decomposed with the help of bacteria like Clostridium butricum and fibers are separated.
(x) Cellulose digestion: Ruminococcus albus and Ruminococcus flavefaciens bacteria live in the stomach of cattle. All these bacteria produce cellulase enzyme. Cellulase enzymes aid in the digestion of raw grasses and plants.

Valuable hormones are produced from bacteria through biotechnology. All these hormones are used as medicines. Eg – Insulin, Erythropoietin, Interferon, TPA etc.

Vaccines are prepared from bacteria for diseases like cholera, typhoid, tuberculosis, scurvy, whooping cough, diphtheria etc. The DPT vaccine is made from bacteria. DPT is named after Corynebacterium dipthae (D), Bordetalla pertussis (P) and Clostridium tetani (T).

Life saving antibiotics such as subtilin (Bacillus subtilisi), polymyxin (Bacillus polymyxa), streptomycin (Actinomycetes), terramycin, colicin or colibacterin (E. coli) are made from bacteria.

(i) Increase in soil fertility: Bacteria decompose the dead bodies of plants and animals and mix them with the soil. As a result, soil organic matter increases and fertility increases.
(ii) Nitrogen fixation: Bacteria such as Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium fixes nitrogen from the air in the roots of leguminous plants. Rhizobium is currently being used as a microbial fertilizer. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Harun or Rashid discovered these three species.
(iii) Nitrification: In the process of nitrification, nitrite is produced from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) As insecticides: Some bacteria are used as insecticides in the field. For example, Bacillus thuringiensis.
(v) Increase in yield: By applying some bacteria to the field, it was possible to increase the yield of rice by 31.8% and the yield of wheat by 20.8%.
(vi) Creation of improved varieties of crops: Transgenic crops have been created by transferring genes with the help of bacteria. These transgenic crops are of superior quality.
(vii) Production of Organic Fertilizers: At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria. Organic fertilizers are being used instead of chemical fertilizers on the land.
(viii) Fodder or silage making: Paddy straw, grass and leguminous plants are cut into small pieces. The pieces are mixed with chitagur and kept in a sealed container. During the fermentation process Lactobacillus bacteria turn them into high quality cow feed. This cow feed is called silage.
(ix) In jute industry: Jute is decomposed with the help of bacteria like Clostridium butricum and fibers are separated.
(x) Cellulose digestion: Ruminococcus albus and Ruminococcus flavefaciens bacteria live in the stomach of cattle. All these bacteria produce cellulase enzyme. Cellulase enzymes aid in the digestion of raw grasses and plants.

(i) Production of Antibiotics: Life saving antibiotics such as subtilin (Bacillus subtilisi), polymyxin (Bacillus polymyxa), streptomycin (Actinomycetes), terramycin, colicin or colibacterin (E. coli) are made from bacteria.
(ii) Preparation of vaccines: Vaccines are prepared from bacteria for diseases like cholera, typhoid, tuberculosis, scurvy, whooping cough, diphtheria etc. The DPT vaccine is made from bacteria. DPT is named after Corynebacterium dipthae (D), Bordetalla pertussis (P) and Clostridium tetani (T).
(iii) Steroid production: Steroids are produced from bacteria through biotechnology. Steroids are used medically. Eg – Testosterone, Pednisone, Estradiol, Estrone etc.
(iv) Hormone production: Valuable hormones are produced from bacteria through biotechnology. All these hormones are used as medicines. Eg – Insulin, Erythropoietin, Interferon, TPA etc.

1. Introduction to medical field
(i) Production of Antibiotics: Life saving antibiotics such as subtilin (Bacillus subtilisi), polymyxin (Bacillus polymyxa), streptomycin (Actinomycetes), terramycin, colicin or colibacterin (E. coli) are made from bacteria.
(ii) Preparation of vaccines: Vaccines are prepared from bacteria for diseases like cholera, typhoid, tuberculosis, scurvy, whooping cough, diphtheria etc. The DPT vaccine is made from bacteria. DPT is named after Corynebacterium dipthae (D), Bordetalla pertussis (P) and Clostridium tetani (T).
(iii) Steroid production: Steroids are produced from bacteria through biotechnology. Steroids are used medically. Eg – Testosterone, Pednisone, Estradiol, Estrone etc.
(iv) Hormone production: Valuable hormones are produced from bacteria through biotechnology. All these hormones are used as medicines. Eg – Insulin, Erythropoietin, Interferon, TPA etc.
2. Role in agriculture
(i) Increase in soil fertility: Bacteria decompose the dead bodies of plants and animals and mix them with the soil. As a result, soil organic matter increases and fertility increases.
(ii) Nitrogen fixation: Bacteria such as Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium fixes nitrogen from the air in the roots of leguminous plants. Rhizobium is currently being used as a microbial fertilizer. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Harun or Rashid discovered these three species.
(iii) Nitrification: In the process of nitrification, nitrite is produced from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) As insecticides: Some bacteria are used as insecticides in the field. For example, Bacillus thuringiensis.
(v) Increase in yield: By applying some bacteria to the field, it was possible to increase the yield of rice by 31.8% and the yield of wheat by 20.8%.
(vi) Creation of improved varieties of crops: Transgenic crops have been created by transferring genes with the help of bacteria. These transgenic crops are of superior quality.
(vii) Production of Organic Fertilizers: At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria. Organic fertilizers are being used instead of chemical fertilizers on the land.
(viii) Fodder or silage making: Paddy straw, grass and leguminous plants are cut into small pieces. The pieces are mixed with chitagur and kept in a sealed container. During the fermentation process Lactobacillus bacteria turn them into high quality cow feed. This cow feed is called silage.
(ix) In jute industry: Jute is decomposed with the help of bacteria like Clostridium butricum and fibers are separated.
(x) Cellulose digestion: Ruminococcus albus and Ruminococcus flavefaciens bacteria live in the stomach of cattle. All these bacteria produce cellulase enzyme. Cellulase enzymes aid in the digestion of raw grasses and plants.
3. Role in industry
(i) Production of Vitamins: E. coli bacteria living in human digestive system synthesize Vitamin-B, Vitamin-K2, Thiamin, Riboflavin, Folic Acid, Biotin etc. Currently, several species of bacteria are used to produce vitamins in the fermentation process.
(ii) In dairy industry: Lactobacillus and Streptococcus bacteria are used to make curds, cheese, butter, ghee, whey etc. from milk.
(iii) In leather industry: Hair is removed from leather by tannin process. The rawhide is then twisted and softened using bacterial protease enzymes.
(iv) Processing: Processing of tea, coffee, tobacco etc. requires enzymes secreted by bacteria. This results in the origin of taste and smell. Bacillus megaterium bacteria is used in this case.
(v) Production of organic gas: At present organic gas such as methane, butane is being produced by decomposing dung and garbage with the help of bacteria. Bacteria like Bacillus, E. coli, Clostridium, Methanococcus etc. produce biogas.
(vi) Salt making: Bacteria are used to make tasting salt.
(vii) In chemical industry: Bacteria are used to make chemicals like vinegar (Acetobacter xylinum), lactic acid (Bacillus lacticacidi), acetone (Clostridium acetobutylicum), alcohol, enzymes, vitamins etc.
(viii) Enzyme production: Enzymes are produced from bacteria such as Bacillus subtilis, Clostridium histolyticum, Trichoderma konigi etc.
(ix) Alcohol and acid production: Various acids and alcohols are produced from starch using Clostridium and Bacillus bacteria.
4. role in human life
(i) Digestion: E. coli and Bacillus help in human digestion.
(ii) Cellulose Digestion: Cattle have a type of bacteria in their intestines. It produces the cellulose digesting enzyme cellulase. Cellulase helps in digestion of hay, grass, leaves, cell walls etc.
(iii) Vitamin production: E. coli and other bacteria in the human intestine produce and supply vitamins B1, B2, K, biotin etc.
(iv) Insulin production: E. coli bacteria are used to produce insulin hormone. It controls diabetes.
(v) Genetic engineering: Agrobacterium tumefaciens and E. coli bacteria are of immense importance in genetic engineering.
(vi) Preparation of dairy food: curd, cheese, butter etc. are made from milk. Bacteria like Streptococcus lactis, Lactobacillus etc. are used to make these foods.
(vii) Probiotic bacteria: About 500 species of bacteria live in the human digestive system as mitotic bacteria. All these bacteria are called probiotic bacteria. Probiotic bacteria help in human digestion. So they are considered as friendly and helpful bacteria of humans.
5. Role in environmental development
(i) Prevention of environmental pollution: Bacteria break down the organic wastes of the environment into simple substances. By oxidizing the complex material, making it suitable for reuse. This is why bacteria are called natural scavengers. Bacteria such as Pseudomonas, Nocardia, Mycobacterium etc. convert petroleum waste into simple compounds in the presence of oxygen.
(ii) Healthy sewage system: Bacteria keep the sewage system healthy by rapidly converting organic waste into liquid. Zooglea ramigera bacteria play an important role in organic waste conversion.
(iii) Oil removal: Oil consuming bacteria are used to remove floating oil in sea water. Pseudomonas aeruginosa is an oil-eating bacteria.
(iv) Biological control: Bacteria are used to suppress the larvae of harmful pests.
6. Role of bacteria in increasing soil fertility
(i) Bacteria decompose dead bodies of plants and animals and mix them with soil. As a result, soil organic matter increases and fertility increases.
(ii) Bacteria like Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium bacteria fix nitrogen from the air in the roots of leguminous plants. Currently, Rhizobium is used as a disinfectant. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Haroon or Rashid discovered these three species.
(iii) Nitrification process produces nitrite from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) Bacteria break down the organic wastes of the environment into simpler substances. Complex materials are oxidized making them suitable for reuse. This is why bacteria are called natural scavengers. Bacteria such as Pseudomonas, Nocardia, Mycobacterium etc. convert petroleum waste into simple compounds in the presence of oxygen.
(v) At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria.
(vi) Genetic engineering using Agrobacterium tumefaciens and E. coli bacteria to develop disease resistant high yielding crops. These crops do not need to apply pesticides, fungicides and chemical fertilizers. As a result, the fertility of the land is not lost.

Beneficial role of bacteria
1. Introduction to medical field
(i) Production of Antibiotics: Life saving antibiotics such as subtilin (Bacillus subtilisi), polymyxin (Bacillus polymyxa), streptomycin (Actinomycetes), terramycin, colicin or colibacterin (E. coli) are made from bacteria.
(ii) Preparation of vaccines: Vaccines are prepared from bacteria for diseases like cholera, typhoid, tuberculosis, scurvy, whooping cough, diphtheria etc. The DPT vaccine is made from bacteria. DPT is named after Corynebacterium dipthae (D), Bordetalla pertussis (P) and Clostridium tetani (T).
(iii) Steroid production: Steroids are produced from bacteria through biotechnology. Steroids are used medically. Eg – Testosterone, Pednisone, Estradiol, Estrone etc.
(iv) Hormone production: Valuable hormones are produced from bacteria through biotechnology. All these hormones are used as medicines. Eg – Insulin, Erythropoietin, Interferon, TPA etc.
2. Role in agriculture
(i) Increase in soil fertility: Bacteria decompose the dead bodies of plants and animals and mix them with the soil. As a result, soil organic matter increases and fertility increases.
(ii) Nitrogen fixation: Bacteria such as Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium fixes nitrogen from the air in the roots of leguminous plants. Rhizobium is currently being used as a microbial fertilizer. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Harun or Rashid discovered these three species.
(iii) Nitrification: In the process of nitrification, nitrite is produced from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) As insecticides: Some bacteria are used as insecticides in the field. For example, Bacillus thuringiensis.
(v) Increase in yield: By applying some bacteria to the field, it was possible to increase the yield of rice by 31.8% and the yield of wheat by 20.8%.
(vi) Creation of improved varieties of crops: Transgenic crops have been created by transferring genes with the help of bacteria. These transgenic crops are of superior quality.
(vii) Production of Organic Fertilizers: At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria. Organic fertilizers are being used instead of chemical fertilizers on the land.
(viii) Fodder or silage making: Paddy straw, grass and leguminous plants are cut into small pieces. The pieces are mixed with chitagur and kept in a sealed container. During the fermentation process Lactobacillus bacteria turn them into high quality cow feed. This cow feed is called silage.
(ix) In jute industry: Jute is decomposed with the help of bacteria like Clostridium butricum and fibers are separated.
(x) Cellulose digestion: Ruminococcus albus and Ruminococcus flavefaciens bacteria live in the stomach of cattle. All these bacteria produce cellulase enzyme. Cellulase enzymes aid in the digestion of raw grasses and plants.
3. Role in industry
(i) Production of Vitamins: E. coli bacteria living in human digestive system synthesize Vitamin-B, Vitamin-K2, Thiamin, Riboflavin, Folic Acid, Biotin etc. Currently, several species of bacteria are used to produce vitamins in the fermentation process.
(ii) In dairy industry: Lactobacillus and Streptococcus bacteria are used to make curds, cheese, butter, ghee, whey etc. from milk.
(iii) In leather industry: Hair is removed from leather by tannin process. The rawhide is then twisted and softened using bacterial protease enzymes.
(iv) Processing: Processing of tea, coffee, tobacco etc. requires enzymes secreted by bacteria. This results in the origin of taste and smell. Bacillus megaterium bacteria is used in this case.
(v) Production of organic gas: At present organic gas such as methane, butane is being produced by decomposing dung and garbage with the help of bacteria. Bacteria like Bacillus, E. coli, Clostridium, Methanococcus etc. produce biogas.
(vi) Salt making: Bacteria are used to make tasting salt.
(vii) In chemical industry: Bacteria are used to make chemicals like vinegar (Acetobacter xylinum), lactic acid (Bacillus lacticacidi), acetone (Clostridium acetobutylicum), alcohol, enzymes, vitamins etc.
(viii) Enzyme production: Enzymes are produced from bacteria such as Bacillus subtilis, Clostridium histolyticum, Trichoderma konigi etc.
(ix) Alcohol and acid production: Various acids and alcohols are produced from starch using Clostridium and Bacillus bacteria.
4. role in human life
(i) Digestion: E. coli and Bacillus help in human digestion.
(ii) Cellulose Digestion: Cattle have a type of bacteria in their intestines. It produces the cellulose digesting enzyme cellulase. Cellulase helps in digestion of hay, grass, leaves, cell walls etc.
(iii) Vitamin production: E. coli and other bacteria in the human intestine produce and supply vitamins B1, B2, K, biotin etc.
(iv) Insulin production: E. coli bacteria are used to produce insulin hormone. It controls diabetes.
(v) Genetic engineering: Agrobacterium tumefaciens and E. coli bacteria are of immense importance in genetic engineering.
(vi) Preparation of dairy food: curd, cheese, butter etc. are made from milk. Bacteria like Streptococcus lactis, Lactobacillus etc. are used to make these foods.
(vii) Probiotic bacteria: About 500 species of bacteria live in the human digestive system as mitotic bacteria. All these bacteria are called probiotic bacteria. Probiotic bacteria help in human digestion. So they are considered as friendly and helpful bacteria of humans.
5. Role in environmental development
(i) Prevention of environmental pollution: Bacteria break down the organic wastes of the environment into simple substances. By oxidizing the complex material, making it suitable for reuse. This is why bacteria are called natural scavengers. Bacteria such as Pseudomonas, Nocardia, Mycobacterium etc. convert petroleum waste into simple compounds in the presence of oxygen.
(ii) Healthy sewage system: Bacteria keep the sewage system healthy by rapidly converting organic waste into liquid. Zooglea ramigera bacteria play an important role in organic waste conversion.
(iii) Oil removal: Oil consuming bacteria are used to remove floating oil in sea water. Pseudomonas aeruginosa is an oil-eating bacteria.
(iv) Biological control: Bacteria are used to suppress the larvae of harmful pests.
6. Role of bacteria in increasing soil fertility
(i) Bacteria decompose dead bodies of plants and animals and mix them with soil. As a result, soil organic matter increases and fertility increases.
(ii) Bacteria like Azotobacter, Pseudomonas, Clostridium etc. capture nitrogen from air and mix it with soil. Rhizobium bacteria fix nitrogen from the air in the roots of leguminous plants. Currently, Rhizobium is used as a disinfectant. Three species of Rhizobium form nodules on lentil roots. These are Rhizobium bangladashense, Rhizobium bine and Rhizobium lentis. Bangladeshi scientist Dr. Haroon or Rashid discovered these three species.
(iii) Nitrification process produces nitrite from ammonia under the action of nitrifying bacteria. Nitrite is then produced from nitrite. Nitrate increases soil fertility.
(iv) Bacteria break down the organic wastes of the environment into simpler substances. Complex materials are oxidized making them suitable for reuse. This is why bacteria are called natural scavengers. Bacteria such as Pseudomonas, Nocardia, Mycobacterium etc. convert petroleum waste into simple compounds in the presence of oxygen.
(v) At present organic fertilizers are being produced by decomposing dung and garbage with the help of bacteria.
(vi) Genetic engineering using Agrobacterium tumefaciens and E. coli bacteria to develop disease resistant high yielding crops. These crops do not need to apply pesticides, fungicides and chemical fertilizers. As a result, the fertility of the land is not lost.
The harmful role of bacteria
1. Human diseases: human cholera (Vibrio cholerae), dysentery (Bacillus dysenteti), tuberculosis (Mycobacterium tuberculosis), typhoid (Salmonella typhosa), whooping cough (Bordetalla pertussis), pneumonia (Diplococcus pneumoniae), diphtheria (Corynebacterium diptheriae), syphilis (Treponema pallidum). , gonorrhea (Neisseria gonorrhoeae), meningitis (Neisseria meningitidis), plague (Yersinia pestis), tetanus (Clostridium tetani), leprosy (Mycobacterium leprae), anthrax, undulated fever etc. are caused by bacteria.
2. Human Sexually Transmitted Diseases (STD): Diseases that are spread from one person to another through sexual intercourse are called Sexually Transmitted Diseases-STD. Sexually transmitted diseases are gonorrhea and syphilis.
(i) Gonorrhea: Gonorrhea is caused by Neisseria gonorrhoeae bacteria. The disease spreads through sexual intercourse between men and women. This disease is transmitted from one body to another by vaginal, oral and anal sex. The disease is spread through sexual contact. The disease is spread through the blood, wounds or kisses of an infected person. Children can get sick from infected bedding, sheets, clothes etc. Children can get gonorrhea from overcrowding and unsanitary conditions. It can cause infertility in both men and women.
(ii) Syphilis: Syphilis is caused by the bacteria Treponema pallidum. The disease spreads through sexual intercourse between men and women. This disease is transmitted from one body to another by vaginal, oral and anal sex. The disease is spread through the blood, wounds or kisses of an infected person. Syphilis can be spread by sharing the patient’s toilet, bathtub, clothing, food, and swimming pool. Children of infected mothers get syphilis. Symptoms appear within 21 days. However, individuals may develop symptoms within 10-90 days.
3. Livestock diseases: Bovine tuberculosis (Mycobacterium bovis), undulated fever, sheep anthrax (Bacillus anthracis), goat brucellosis (Brucella suis), rat plague (Yersinia pestis), poultry cholera (Bacillus avisepticus) etc. are caused by bacteria. The bacterium causes rot in cattle, downy mildew in poultry, and disease in horses, donkeys, sheep, and goats.
4. Plant diseases: Tundu disease of wheat (Agrobacterium tritici), blight of rice (Xanthomonas oryzae), gum disease of sugarcane (Xanthomonas vasculorum), canker disease of tomato (Corynebacterium michiganese), crown gall of tomato and rose (Agrobacterium tumefaciens), canker disease of lemon (Xanthomonas citri). , potato scab disease (Steptomyces scabies), apple fire blight (Erwinia amylovora), oat stem rot and potato soft rot (Erwinia carotovora), tobacco blight (Pseudomonas tabacci), cotton leaf spot disease (Xanthomonas mavacearum), bean leaf spot ( Diseases caused by bacteria such as Xanthomonus malvacearum). It greatly reduces the yield of crops.
5. Soil Fertility Reduction / Denitrification: Thiobacillus, Bacillus denitrificans and Microbacillus bacteria break down nitrates in the soil to release nitrogen in the process of denitrification. It causes lack of plant nutrients in the soil. Soil fertility decreases and crop production decreases.
6. Food spoilage and poisoning: Bacteria such as Clostridium botulinum, Staphylococcus, Pseudomonas, Acinetobacter, Bacillus etc. spoil vegetables, fruits, fish, meat, dairy products and other food products. Clostridium botulinum bacteria produces a toxin called botulinum in food. Botulinum toxin causes botulism in humans. It can kill people.
7. Water pollution: The bacteria that cause cholera, dysentery and typhoid cause water pollution through the feces of patients. Bacteria like E. coli, Salmonella, Vibrio etc. pollute water.
8. Bioterrorism: In the modern era, bacteria may have the potential to be used in harmful microbial warfare. This is called bioterrorism. It is a threat to mankind.
9. Accidents in vehicles: Clostridium growth in aviation fuel can cause serious accidents.
10. Damage to household items: Spirochete cytophaga bacteria causes damage to household fabrics, leather goods and furniture. Desulfovibrio causes lesions in iron pipes and disrupts water supply.
11. Desulfurization: Desulfovibrio bacteria break down sulfate salts in the soil to release hydrogen sulfide gas in the desulfurization process. It causes great loss in plant nutrition.
12. Vehicle accidents: Clostridium bacteria grows in airplane fuel. It can cause a plane crash.
Role in reducing soil fertility
1. Thiobacillus, Bacillus denitrificans and Microbacillus bacteria release nitrogen by breaking down soil nitrate in the process of denitrification. It causes lack of plant nutrients in the soil. Soil fertility decreases and crop production decreases.
2. Desulfovibrio bacteria break down sulfate salts in soil to release hydrogen sulfide gas in the desulfurization process. It causes great loss in plant nutrition.