Effects of different light spectra on plant morphology and secondary metabolite production

Light profoundly shapes plant growth and metabolism. Different light spectra play distinct roles in plant morphology and secondary metabolite production.

1. UV Light (100-400 nm):

• Controlled UV radiation stimulates flavonoid production for defence
• Excessive UV exposure can damage plants and reduce growth

2. Blue Light (400-500 nm):

• Shorter, stockier plant growth
• Increased leaf thickness, stomatal density & chlorophyll content
• Stimulates anthocyanins, flavonoids & phenolic compounds for defence.

3. Green Light (500-600 nm):

•  Impacts leaf expansion & stomatal conductance
• Promotes specific phenolic compounds with antioxidant properties

4. Red Light (600-700 nm):

• Induces elongation, flowering & fruit development
• Boosts carotenoids for photosynthesis & antioxidant activity

5. Far-Red Light (700-800 nm):

• Increases stem elongation in dense canopies
• Regulates photomorphogenesis & seed germination
• Indirectly affects secondary metabolites through light signalling

Understanding these light-induced responses offers the potential for optimizing cultivation practices, improving crop yields & harnessing bioactive compounds for agriculture and human health benefits.

In above article we try to answer following FAQ which we received from clients

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