Probiotic: food or another substance that helps to replenish or replace microorganisms in specific parts of the body. Bacteria are the most abundant form of life on the planet. They are found in most every environment, from Antarctic ice, to boiling hydrothermal vents, to inside your stomach.
Most of these do not hurt us. Actually, many of these organisms are very important to our survival. Bacteria help many animals to digest food, they help trees grow, and they are important in the recycling of nutrients in the environment. They are also used in biotechnology applications to produce everything from food to energy to clean water. Bacteria can be very helpful to humans and other organisms.
Click for more detail. Steven Hart. They can also convert soluble phosphorus from the water column into calcium phosphate and calcium iron phosphate, which are insoluble minerals that are not available to most types of pond algae.
Since the bacteria convert nutrients into unavailable forms, they can be beneficial in reducing nuisance algae blooms in lakes and ponds. In fresh water, phosphorus is generally the limiting nutrient for algal growth. The ratio of nitrogen to phosphorus determines the types of algae that will grow and thrive in a pond. In situations where there is excess phosphorus, nuisance species of filamentous and bluegreen algae cyanobacteria will dominate the waterbody instead of the beneficial planktonic green algae that form the base of the food web.
The bacteria themselves can also contribute to the food web, becoming a food source for zooplankton and benthos, which then become food for fish and other organisms. Biochemists have found ways to culture beneficial bacteria so that they can be added to lakes and ponds to accelerate the decomposition process and to remove nutrients from the aquatic system. This process is often referred to as biological water quality augmentation.
Initially, a large inoculation dose is added to get the bacterial population established, and then maintenance doses are applied to ensure that the bacteria continue to thrive. As the bacteria grow and replicate, they tie up phosphorus and nitrogen in their cells so that it is not available to nuisance algae. By continuing to vist this site you agree to our use of cookies. Recent research on the role of bacteria suggests we need a radical rethink about what makes us healthy.
Thanks to advances in genetic sequencing, scientists are starting to discover, categorise and understand the importance of the vast universe of microbial organisms that live invisibly on, in and around us. Instead of bacteria being our deadly foe, it turns out the vast majority are really our best friends — and our oldest. Like the best of relationships, we are inter-dependent. We provide energy via food to our single-cell friends: in return they perform a myriad of life-giving activities.
As it is in our gut, so it is in the soil. The idea articulated by SFT director Patrick Holden that healthy topsoil thrives because of microbial activity — functioning in a similar way to human digestion — illustrates the interconnectedness of everything. In the dark of topsoil, microscopic microbes perform vital tasks to maintain the health of soil life. Meanwhile, in the dark of our digestive system, trillions of tiny microbes are likewise busy keeping our bodies healthy. The role of beneficial bacteria is multi-functional.
A key role of both soil and gut bacteria is digestion. As well as bacteria being an essential component of digestion, beneficial bacteria also help to repel disease and are a key component of a healthy immune system. The number of microorganisms living invisibly in the world is mind-boggling: one teaspoon of rich garden soil can hold one billion bacteria along with fungi and other microorganisms.
As for the bacteria in a symbiotic relationship with us, the majority live in the walls of our intestines. This community of diverse bacterial species, called the gut microbiome, weighs about two kilos. There is a clear analogy between soil and human digestion and, according to nutritionist and author Daphne Lambert, there is also a direct relationship. In her soon-to-be-published book Living Food: A Feast of Soil and Soul , she traces the origins of soil eating for health, drawing on recent studies to argue for increased exposure to soil to build immunity.
But our modern lifestyles break the link between healthy soils and healthy humans, with less people than ever before working on the land and every last trace of soil washed off the vegetables we buy.
But what about the scary bugs? Take heart that the benefit of handling soil far outweighs the risks. First, the good bacteria outnumber the bad. First proposed in , the hygiene hypothesis in medicine shows that we do small children a disservice by keeping them in a sterile environment. El Mohandes MAO The use of associative diazotrophs with different rates of nitrogen fertilization and compost to enhance growth and N 2 -fixation of wheat. Bulletin of Faculty of Agriculture, University of Cairo Esashi Y Ethylene and seed germination.
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