Where does rhizobium are you N live how does it help the plant what kind of relationship exist between Rhizobium and the ?plant
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Rhizobia sp. bacteria can be found in the root nodules of legumes. These are swellings (clusters of cells) that can be found along the roots. The Rhizobia carry out the process known as nitrogen fixation. Plants need nitrogen to produce protein but they can’t take it directly from the air where it is abundant in the form of diatomic nitrogen gas (N2). In order for plants to get nitrogen it must first be incorporated into organic compounds such as amino acids in a process known as nitrogen fixation. The Rhizobia absorb nitrogen and use it to make proteins and as a by-product it produces nitrogen-containing ammonium which, unlike the N2 in the air, the plant can take up and use for growth (protein production).
As such we call Rhizobia nitrogen-fixing bacteria - they are part of a group of organisms that are vital to the survival of life on the planet. The relationship between legumes and Rhizobia sp. is a form of symbiosis called mutualism, where both organisms benefit from each-other - the plant gets usable nitrogen from the ammonium and the bacteria receive organic acids from the plant to use as a food source. This kind of relationship is sometimes written as +/+ (each + sign represents that each organism benefits).
Hope this helps.
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H. A khan, B. S Microbiology (2023)
Answered 6w ago
Biological N2 fixation represents the major source of N input in agricultural soils including those in arid regions. The major N2-fixing systems are the symbiotic systems, which can play a significant role in improving the fertility and productivity of low-N soils. The Rhizobium-legume symbioses have received most attention and have been examined extensively. The behavior of some N2-fixing systems under severe environmental conditions such as salt stress, drought stress, acidity, alkalinity, nutrient deficiency, fertilizers, heavy metals, and pesticides is reviewed. These major stress factors suppress the growth and symbiotic characteristics of most rhizobia; however, several strains, distributed among various species of rhizobia, are tolerant to stress effects. Some strains of rhizobia form effective (N2-fixing) symbioses with their host legumes under salt, heat, and acid stresses, and can sometimes do so under the effect of heavy metals. Reclamation and improvement of the fertility of arid lands by application of organic (manure and sewage sludge) and inorganic (synthetic) fertilizers are expensive and can be a source of pollution. The Rhizobium-legume (herb or tree) symbiosis is suggested to be the ideal solution to the improvement of soil fertility and the rehabilitation of arid lands and is an important direction for future research.
As such we call Rhizobia nitrogen-fixing bacteria - they are part of a group of organisms that are vital to the survival of life on the planet. The relationship between legumes and Rhizobia sp. is a form of symbiosis called mutualism, where both organisms benefit from each-other - the plant gets usable nitrogen from the ammonium and the bacteria receive organic acids from the plant to use as a food source. This kind of relationship is sometimes written as +/+ (each + sign represents that each organism benefits).
Hope this helps.
7.9k Views · View Upvoters
MORE ANSWERS BELOW. RELATED QUESTIONS
The Rhizobium bacteria and leguminous plant help each other in survival. What is this relationship known as?
16,333 Views
What does rhizobium bacteria do? Explain it's symbiotic relationship.
167 Views
What is the symbiotic relationship between legume wood species and rhizobia?
77 Views
Why do legumes have nitrogen fixing bacteria?
1,024 Views
What is symbiotic relationship?
17 Views
OTHER ANSWERS

H. A khan, B. S Microbiology (2023)
Answered 6w ago
Biological N2 fixation represents the major source of N input in agricultural soils including those in arid regions. The major N2-fixing systems are the symbiotic systems, which can play a significant role in improving the fertility and productivity of low-N soils. The Rhizobium-legume symbioses have received most attention and have been examined extensively. The behavior of some N2-fixing systems under severe environmental conditions such as salt stress, drought stress, acidity, alkalinity, nutrient deficiency, fertilizers, heavy metals, and pesticides is reviewed. These major stress factors suppress the growth and symbiotic characteristics of most rhizobia; however, several strains, distributed among various species of rhizobia, are tolerant to stress effects. Some strains of rhizobia form effective (N2-fixing) symbioses with their host legumes under salt, heat, and acid stresses, and can sometimes do so under the effect of heavy metals. Reclamation and improvement of the fertility of arid lands by application of organic (manure and sewage sludge) and inorganic (synthetic) fertilizers are expensive and can be a source of pollution. The Rhizobium-legume (herb or tree) symbiosis is suggested to be the ideal solution to the improvement of soil fertility and the rehabilitation of arid lands and is an important direction for future research.
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