Abstract
The response of `Bright Golden Anne' chrysanthemum plants grown under CuSO 4 spectral filters to exogenous GA 3 application was evaluated to determine the relationship between gibberellins (GAs) and carbohydrate levels. The CuSO 4 filters removed far red (FR) wavelengths of light and increased red: far red (R:FR), blue: far red (B:FR), blue: red (B:R) ratios, and phytochrome photoequilibrium (Ø) values of transmitted light compared to water (control) filter. Plant height, internode length, and leaf and stem dry weights were significantly reduced by light passing through CuSO 4 filters in spring and summer seasons. Weekly applications of exogenous GA 3 reversed the reduction in height and internode length induced by CuSO 4 filters. Plants grown under CuSO 4 filters responded more to exogenous GA 3 application with respect to height and internode length, suggesting that the sensitivity to GA was not lowered. Light passing through CuSO 4 filters reduced the carbohydrate levels, but the response varied with the season. Weekly GA 3 application increased the carbohydrate levels, but did not totally reverse the reduction in carbohydrate levels under the CuSO 4 filters. Although GA 3 application increased the carbohydrate levels partially in CuSO 4 filter-grown plants, the inhibition of GAs may not be solely responsible for reduction of carbohydrate levels under CuSO 4 filters, showing that exogenous GAs and carbohydrate levels are not well correlated under CuSO 4 spectral filters.
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Claims 8
Claim · model-written summary
CuSO 4 filters altered transmitted light spectra.
- Taxon
- chrysanthemum
.jpeg?width=60)
Chrysanthemumt0 - Treatment
- CuSO 4 filterse0
- Outcome
- transmitted lighte0
- Direction
- increasede0
- Comparator
- water (control) filtere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“The CuSO 4 filters removed far red (FR) wavelengths of light and increased red: far red (R:FR), blue: far red (B:FR), blue: red (B:R) ratios, and phytochrome photoequilibrium (Ø) values of transmitted light compared to water (control) filter”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
CuSO 4-filtered light significantly reduced height and internode length in spring and summer.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- light passing through CuSO 4 filterse0
- Outcome
- Plant height, internode lengthe0
- Direction
- reducede0
- Qualifier
- spring and summer seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, internode length, and leaf and stem dry weights were significantly reduced by light passing through CuSO 4 filters in spring and summer seasons”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
CuSO 4-filtered light significantly reduced leaf and stem dry weights.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- light passing through CuSO 4 filterse0
- Outcome
- leaf and stem dry weightse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, internode length, and leaf and stem dry weights were significantly reduced by light passing through CuSO 4 filters in spring and summer seasons”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
Weekly GA 3 reversed filter-induced height and internode shortening.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- Weekly applications of exogenous GA 3e0
- Outcome
- height and internode lengthe0
- Direction
- reversed the reductione0
- Comparator
- CuSO 4 filterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weekly applications of exogenous GA 3 reversed the reduction in height and internode length induced by CuSO 4 filters”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
Filtered plants showed a larger height and internode response to GA 3, suggesting GA sensitivity was not lowered.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- exogenous GA 3 applicatione0
- Outcome
- height and internode lengthe0
- Direction
- responded moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown under CuSO 4 filters responded more to exogenous GA 3 application with respect to height and internode length, suggesting that the sensitivity to GA was not lowered”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
CuSO 4-filtered light reduced carbohydrate levels with seasonal variation.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- Light passing through CuSO 4 filterse0
- Outcome
- carbohydrate levelse0
- Direction
- reducede0
- Qualifier
- varied with the seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light passing through CuSO 4 filters reduced the carbohydrate levels, but the response varied with the season”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
Weekly GA 3 raised carbohydrate levels but did not fully reverse the filter reduction.
- Taxon
- chrysanthemumChrysanthemumt0
- Treatment
- Weekly GA 3 applicatione0
- Outcome
- carbohydrate levelse0
- Direction
- increasede0
- Qualifier
- did not totally reversee0
- Comparator
- CuSO 4 filterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weekly GA 3 application increased the carbohydrate levels, but did not totally reverse the reduction in carbohydrate levels under the CuSO 4 filters”
t0“CHRYSANTHEMUM PLANTS”
Claim · model-written summary
The authors concluded GA inhibition alone may not explain reduced carbohydrate levels under the filters.
- Taxon
- chrysanthemumChrysanthemumt0
- Outcome
- carbohydrate levelse0
- Qualifier
- inhibition of GAse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inhibition of GAs may not be solely responsible for reduction of carbohydrate levels under CuSO 4 filters, showing that exogenous GAs and carbohydrate levels are not well correlated under CuSO 4 spectral filters”
t0“CHRYSANTHEMUM PLANTS”
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