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Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?
1. Resist drought and increase absorptive area
2. Tolerate extremes of ph
3. Resist disease infestation
Select the correct answer using the codes given below.
1. Resist drought and increase absorptive area
2. Tolerate extremes of ph
3. Resist disease infestation
Select the correct answer using the codes given below.
- a)1 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2, and 3
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Mycorrhizal biotechnology has been used in rehabilitating degraded sit...
All three options are correct.
Option-1:- Re-introduction of Arbuscular Mycorrhizal Fungi into agricultural soils has been shown to increase crop yields in nutrient poor soils, increase yields for agricultural plants that have large requirement for nutrients and water, and restore structure and fertility to degraded soils. The resulting soil structure allows air and water movement into the soil, encouraging root growth and distribution, allows intra-aggregate organic matter to be slowly decomposed by microbes and converted into plant-available nutrients, and makes the soil less susceptible to wind and water erosion.
Option-1:- Re-introduction of Arbuscular Mycorrhizal Fungi into agricultural soils has been shown to increase crop yields in nutrient poor soils, increase yields for agricultural plants that have large requirement for nutrients and water, and restore structure and fertility to degraded soils. The resulting soil structure allows air and water movement into the soil, encouraging root growth and distribution, allows intra-aggregate organic matter to be slowly decomposed by microbes and converted into plant-available nutrients, and makes the soil less susceptible to wind and water erosion.
Option-2:- Anthropogenic deposition increases the possibility of phosphorus (P) limiting productivity in forest ecosystems. Moreover, inorganic P availability is largely controlled by soil pH and biogeochemical theory suggests that forests with acidic soils (i.e., <pH5) are particularly vulnerable to P limitation. Results from previous studies in these systems are mixed with evidence both for and against P limitation. Shifts in mycorrhizal colonization and community structure help temperate forest ecosystems overcome an underlying P limitation by accessing mineral and organic P sources that are otherwise unavailable for direct plant uptake
Option-3:- Vesicular-arbuscular mycorrhizae (VAM) enhance plant growth through increased nutrient uptake, stress tolerance and disease resistance. As an integral part of the root system, they interact with other microorganisms in soil and result in increased root exudation approaching about 25% of the plant dry matter production. Roots support a multitude of microorganisms that, in concert, can have profound influence on growth and survival of the plant. VAM fungi can alter the root exudation pattern, enhance chitinolytic activity and alter photosynthetic/respiratory deficiencies. VAM-positive plants are known to exhibit varied resistance towards soil-borne and foliar pathogens. The known interactions include a number of mechanisms, such as exclusion of the pathogen, lignification of plant cell walls, changed phosphate nutrition resulting in altered exudation by roots, and formation of inhibitory low molecular weight compounds.
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Mycorrhizal biotechnology has been used in rehabilitating degraded sit...
Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to resist drought and increase absorptive area, tolerate extremes of pH, and resist disease infestation.
1. Resist drought and increase absorptive area:
Mycorrhizal fungi form a symbiotic relationship with the roots of plants. They form a network of hyphae that extends the absorptive area of the plant roots. This increased absorptive area allows the plants to take up more water and nutrients from the soil, thus helping them to resist drought conditions. The mycorrhizal fungi also enhance the water-holding capacity of the soil, further aiding in drought resistance.
2. Tolerate extremes of pH:
Mycorrhizal fungi can enhance the tolerance of plants to extremes of pH. They can help plants grow in acidic or alkaline soils by improving nutrient availability and uptake. The fungal hyphae can access nutrients that are otherwise unavailable to the plants, such as phosphorus in alkaline soils or iron and manganese in acidic soils. This enables the plants to thrive in soil conditions that would otherwise be unfavorable.
3. Resist disease infestation:
Mycorrhizal fungi can also contribute to the resistance of plants against disease infestation. They can produce antifungal compounds that inhibit the growth of pathogenic fungi in the soil. Additionally, the mycorrhizal association can stimulate the plants' immune system, increasing their resistance to diseases. The fungi can also compete with pathogenic fungi for nutrients and space, further reducing the risk of disease infestation.
By providing these benefits, mycorrhizal biotechnology can significantly improve the success of plant establishment and growth in degraded sites. It can help restore ecosystem functions and enhance the overall ecological health of degraded areas. Mycorrhizal fungi can be introduced to degraded sites through various methods, including the inoculation of plants with mycorrhizal spores or the addition of soil amendments containing mycorrhizal propagules.
Overall, mycorrhizal biotechnology offers a sustainable and environmentally friendly approach to rehabilitating degraded sites, as it enhances the resilience and productivity of plants in challenging environmental conditions.
1. Resist drought and increase absorptive area:
Mycorrhizal fungi form a symbiotic relationship with the roots of plants. They form a network of hyphae that extends the absorptive area of the plant roots. This increased absorptive area allows the plants to take up more water and nutrients from the soil, thus helping them to resist drought conditions. The mycorrhizal fungi also enhance the water-holding capacity of the soil, further aiding in drought resistance.
2. Tolerate extremes of pH:
Mycorrhizal fungi can enhance the tolerance of plants to extremes of pH. They can help plants grow in acidic or alkaline soils by improving nutrient availability and uptake. The fungal hyphae can access nutrients that are otherwise unavailable to the plants, such as phosphorus in alkaline soils or iron and manganese in acidic soils. This enables the plants to thrive in soil conditions that would otherwise be unfavorable.
3. Resist disease infestation:
Mycorrhizal fungi can also contribute to the resistance of plants against disease infestation. They can produce antifungal compounds that inhibit the growth of pathogenic fungi in the soil. Additionally, the mycorrhizal association can stimulate the plants' immune system, increasing their resistance to diseases. The fungi can also compete with pathogenic fungi for nutrients and space, further reducing the risk of disease infestation.
By providing these benefits, mycorrhizal biotechnology can significantly improve the success of plant establishment and growth in degraded sites. It can help restore ecosystem functions and enhance the overall ecological health of degraded areas. Mycorrhizal fungi can be introduced to degraded sites through various methods, including the inoculation of plants with mycorrhizal spores or the addition of soil amendments containing mycorrhizal propagules.
Overall, mycorrhizal biotechnology offers a sustainable and environmentally friendly approach to rehabilitating degraded sites, as it enhances the resilience and productivity of plants in challenging environmental conditions.
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Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer?.
Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to?1. Resist drought and increase absorptive area2. Tolerate extremes of ph3. Resist disease infestationSelect the correct answer using the codes given below.a)1 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2, and 3Correct answer is option 'D'. Can you explain this answer?.
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