KVV E-Modules - Plant growth-promoting rhizobacteria (PGPR)

Quadrant -I (Video)

Plant growth-promoting rhizobacteria (PGPR)

Quadrant - II (Study Material)

1. Plant growth-promoting rhizobacteria (PGPR)

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Quadrant - III (Assignments)

1. Plant growth-promoting rhizobacteria (PGPR)

Plant growth-promoting rhizobacteria (PGPR) are beneficial bacteria that colonize the rhizosphere and promote plant growth and development. They enhance plant growth through mechanisms such as nitrogen fixation, phosphate solubilization, production of plant growth hormones, and suppression of soil-borne pathogens. PGPR can also improve nutrient uptake and help plants tolerate environmental stresses. Because of these beneficial effects, PGPR are increasingly used as eco-friendly alternatives to chemical fertilizers and pesticides in sustainable agriculture.

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Quadrant - IV (MCQs)

1. What does PGPR stand for?

A: A. Plant Growth-Promoting Rhizobacteria B: B. Plant Germination-Producing Root Bacteria C: C. Plant Growth-Producing Rhizome D: D. Plant Genetic Protection Rhizobacteria

PGPR mainly colonize which region of the soil

A: A. Phyllosphere B: B. Rhizosphere C: C. Atmosphere D: D. Lithosphere

Which nutrient can some PGPR make available to plants through nitrogen fixation?

A: A. Nitrogen B: B. Potassium C: C. Calcium D: D. Sulfur

Which plant hormone is commonly produced by PGPR?

A: A. Auxin B: B. Melatonin C: C. Insulin D: D. Adrenaline

Which activity of PGPR increases phosphorus availability to plants?

A: A. Phosphate solubilization B: B. Photosynthesis C: C. Transpiration D: D. Respiration

Which of the following is a common PGPR genus?

A: A. Pseudomonas B: B. Plasmodium C: C. Penicillium D: D. Paramecium

Siderophores produced by PGPR mainly help in the acquisition of:

A: A. Iron B: B. Nitrogen C: C. Calcium D: D. Sodium

PGPR can protect plants from pathogens through:

A: A. Biological control B: B. Increasing soil pollution C: C. Reducing photosynthesis D: D. Destroying plant roots

Which of the following is a benefit of using PGPR in agriculture?

A: A. Improved plant growth B: B. Increased chemical pollution C: C. Reduced nutrient uptake D: D. Increased soil toxicity

PGPR are important in sustainable agriculture because they can:

A: A. Reduce dependence on chemical fertilizers and pesticides B: B. Increase soil degradation C: C. Prevent seed germination D: D. Destroy beneficial soil microorganisms

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1. Plant growth-promoting rhizobacteria (PGPR)

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