Abstract
The work studied the influence of plant growth regulators as well as the effect of monochromatic radiation of different spectral composition on the growth and accumulation of secondary metabolites in the callus culture of sweet potato (Ipomoea batatas L.). It was found that auxin analogues in low concentrations (0.5 mg/L) significantly stimulated the growth of cell biomass, while the effect of 4-chlorophenoxyacetic acid (4-CPA) was more pronounced (stimulation 16 times) than that of 2,4-dichlorophenoxyacetic acid (2,4-D) (13.5 times stimulation). Both the increase in the concentration of 2,4-D and 4-CPA in the medium and the addition of cytokinin, 6-benzylaminopurine (BAP), led to a significant inhibition of culture growth (up to three times). In contrast to 2,4-D, the addition of 4-CPA led to an eightfold increase in the total content of polyphenolic compounds in cultured cells. Activating effect of 4-CPA on the biosynthetic characteristics of I. batatas cell culture persisted even with the addition of BAP, while an increase in the concentration of 4‑CPA led to the leveling of the activating effect. Monochromatic radiation—white, red (660 and 630 nm), yellow, green, and blue (440 and 460 nm) light—inhibited growth (up to 1.5 times) and the total accumulation of secondary metabolites in I. batatas cells (up to 1.8 times). At the same time, the white, bright blue, and red spectra differentially activated the formation of individual compounds 3,4-dicaffeoylquinic acid and 3-feruloyl-5-caffeoylquinic acid. Thus, the authors have established that both auxin analogues and spectral radiation exhibit different effects on the growth and biosynthetic characteristics of the I. batatas calli.
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Claims 12
Claim · model-written summary
Low-dose 4-CPA stimulated cell biomass growth 16-fold.
- Taxon
- Ipomoea batatas
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- 4-chlorophenoxyacetic acid (4-CPA)e0
- Outcome
- stimulatione0
- Direction
- stimulatione0
- Value
- 16 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“the effect of 4-chlorophenoxyacetic acid (4-CPA) was more pronounced (stimulation 16 times)”
t0“Ipomoea batatas”
Claim · model-written summary
Low-dose 2,4-D stimulated cell biomass growth 13.5-fold.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- 2,4-dichlorophenoxyacetic acid (2,4-D)e0
- Outcome
- stimulatione0
- Direction
- stimulatione0
- Value
- 13.5 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“than that of 2,4-dichlorophenoxyacetic acid (2,4-D) (13.5 times stimulation)”
t0“Ipomoea batatas”
Claim · model-written summary
Increasing 2,4-D concentration significantly inhibited culture growth.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- increase in the concentration of 2,4-De0
- Outcome
- culture growthe0
- Direction
- inhibitione0
- Value
- up to three timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the concentration of 2,4-D and 4-CPA in the medium and the addition of cytokinin, 6-benzylaminopurine (BAP), led to a significant inhibition of culture growth (up to three times)”
t0“Ipomoea batatas”
Claim · model-written summary
Increasing 4-CPA concentration significantly inhibited culture growth.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- increase in the concentration of 2,4-D and 4-CPA in the mediume0
- Outcome
- culture growthe0
- Direction
- inhibitione0
- Value
- up to three timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in the concentration of 2,4-D and 4-CPA in the medium and the addition of cytokinin, 6-benzylaminopurine (BAP), led to a significant inhibition of culture growth (up to three times)”
t0“Ipomoea batatas”
Claim · model-written summary
BAP addition significantly inhibited culture growth.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- addition of cytokinin, 6-benzylaminopurine (BAP)e0
- Outcome
- culture growthe0
- Direction
- inhibitione0
- Value
- up to three timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of cytokinin, 6-benzylaminopurine (BAP), led to a significant inhibition of culture growth (up to three times)”
t0“Ipomoea batatas”
Claim · model-written summary
4-CPA increased total polyphenols eightfold relative to 2,4-D.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- addition of 4-CPAe0
- Outcome
- total content of polyphenolic compoundse0
- Direction
- increasee0
- Value
- eightfolde0
- Comparator
- 2,4-De0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast to 2,4-D, the addition of 4-CPA led to an eightfold increase in the total content of polyphenolic compounds in cultured cells”
t0“Ipomoea batatas”
Claim · model-written summary
The activating effect of 4-CPA on biosynthesis persisted with BAP.
- Taxon
- I. batatasIpomoea batatase0
- Treatment
- 4-CPAe0
- Outcome
- biosynthetic characteristicse0
- Direction
- Activatinge0
- Qualifier
- addition of BAPe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activating effect of 4-CPA on the biosynthetic characteristics of I. batatas cell culture persisted even with the addition of BAP”
Claim · model-written summary
Higher 4-CPA concentration leveled its activating effect.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- increase in the concentration of 4‑CPAe0
- Outcome
- activating effecte0
- Direction
- levelinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in the concentration of 4‑CPA led to the leveling of the activating effect”
t0“Ipomoea batatas”
Claim · model-written summary
Monochromatic radiation inhibited callus growth up to 1.5-fold.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- Monochromatic radiatione0
- Outcome
- growthe0
- Direction
- inhibitede0
- Value
- up to 1.5 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monochromatic radiation—white, red (660 and 630 nm), yellow, green, and blue (440 and 460 nm) light—inhibited growth (up to 1.5 times)”
t0“Ipomoea batatas”
Claim · model-written summary
Monochromatic radiation inhibited total secondary-metabolite accumulation up to 1.8-fold.
- Taxon
- I. batatasIpomoea batatase0
- Outcome
- total accumulation of secondary metabolitese0
- Value
- up to 1.8 timese0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total accumulation of secondary metabolites in I. batatas cells (up to 1.8 times)”
Claim · model-written summary
White, bright blue and red spectra differentially activated 3,4-dicaffeoylquinic acid formation.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- the white, bright blue, and red spectrae0
- Outcome
- formation of individual compounds 3,4-dicaffeoylquinic acide0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the white, bright blue, and red spectra differentially activated the formation of individual compounds 3,4-dicaffeoylquinic acid and 3-feruloyl-5-caffeoylquinic acid”
t0“Ipomoea batatas”
Claim · model-written summary
White, bright blue and red spectra differentially activated 3-feruloyl-5-caffeoylquinic acid formation.
- Taxon
- Ipomoea batatasIpomoea batatast0
- Treatment
- the white, bright blue, and red spectrae0
- Outcome
- 3-feruloyl-5-caffeoylquinic acide0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the white, bright blue, and red spectra differentially activated the formation of individual compounds 3,4-dicaffeoylquinic acid and 3-feruloyl-5-caffeoylquinic acid”
t0“Ipomoea batatas”
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