Abstract
CONTEXT: Changium smyrnioides Wolff (Apiaceae) is an endangered medicinal plant with numerous pharmacological uses. OBJECTIVE: To investigate the effect of light intensity levels on the growth and accumulation of secondary metabolites of C. smyrnioides, cultivated seedlings were subjected to different relative light intensities via sun-shading. MATERIALS AND METHODS: Changium smyrnioides seedlings were subjected to five irradiance treatments (100, 60.54, 44.84, 31.39, and 10.56% sunlight) in glasshouse for 9 months. Enzymatic and non-enzymatic antioxidants with spectrophotometric method, photosynthetic parameters with Li-6400XT, dry matter accumulation and active component contents in the root with spectrophotometric and HPLC method were analyzed. RESULTS: ·s) and dry root weight (5.07 g) were achieved under 60.54% sunlight. Lower relative light intensity levels stimulated the accumulation levels of bioactive compounds in the roots so that the highest contents of mannitol (1.35%) and choline (405.58 μg/g) were recorded under 31.39% sunlight, and the highest polysaccharide content (10.80%) were achieved under 44.84% sunlight. With a decrease in the relative light intensity levels, the water-soluble component content increased first and then decreased. DISCUSSION AND CONCLUSION: The results revealed that 31.39-60.54% sunlight serve as appropriate relative light intensity conditions for cultivated C. smyrnioides.
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Claims 7
Claim · model-written summary
Dry root weight reached 5.07 g under 60.54% sunlight.
- Taxon
- Changium smyrnioidesChangium smyrnioidest0
- Treatment
- 60.54% sunlighte0
- Outcome
- dry root weighte0
- Value
- 5.07 ge0
Not reportedDirection
Verbatim
e0“dry root weight (5.07 g) were achieved under 60.54% sunlight”
t0“Changium smyrnioides”
Claim · model-written summary
Lower light intensity stimulated root bioactive compound accumulation.
Verbatim
e0“Lower relative light intensity levels stimulated the accumulation levels of bioactive compounds in the roots”
t0“Changium smyrnioides”
Claim · model-written summary
Root mannitol content reached 1.35% at 31.39% sunlight.
Verbatim
e0“highest contents of mannitol (1.35%) and choline (405.58 μg/g) were recorded under 31.39% sunlight”
t0“Changium smyrnioides”
Claim · model-written summary
Root choline content reached 405.58 μg/g at 31.39% sunlight.
Verbatim
e0“highest contents of mannitol (1.35%) and choline (405.58 μg/g) were recorded under 31.39% sunlight”
t0“Changium smyrnioides”
Claim · model-written summary
Root polysaccharide content reached 10.80% at 44.84% sunlight.
Verbatim
e0“the highest polysaccharide content (10.80%) were achieved under 44.84% sunlight”
t0“Changium smyrnioides”
Claim · model-written summary
Water soluble component content rose then fell as light intensity decreased.
- Taxon
- Changium smyrnioidesChangium smyrnioidest0
- Treatment
- decrease in the relative light intensity levelse0
- Outcome
- water-soluble component contente0
- Direction
- increased first and then decreasede0
Verbatim
e0“With a decrease in the relative light intensity levels, the water-soluble component content increased first and then decreased”
t0“Changium smyrnioides”
Claim · model-written summary
The authors identified 31.39 to 60.54% sunlight as appropriate for cultivation.
- Taxon
- C. smyrnioidesChangium smyrnioidese0
- Outcome
- 31.39-60.54% sunlight serve as appropriate relative light intensity conditionse0
Verbatim
e0“31.39-60.54% sunlight serve as appropriate relative light intensity conditions for cultivated C. smyrnioides”