Abstract
Different intensities of UV-A (6, 12, 18 μmol·m−2s−1) were applied in a plant factory to evaluate the combined influences of supplemental UV-A and red and blue light (Red:Blue = 1:1 at PPFD of 250 μmol·m−2 s−1) on the biomass, antioxidant activity and phytochemical accumulation of kale. Supplemental UV-A treatments (T1: 6 μmol·m−2 s−1, T2: 12 μmol·m−2 s−1 and T3: 18 μmol·m−2 s−1) resulted in higher moisture content, higher pigment content, and greater leaf area of kale while T2 reached its highest point. T2 treatment positively enhanced the antioxidant capacity, increased the contents of soluble protein, soluble sugar and reduced the nitrate content. T1 treatment markedly increased the content of aliphatic glucosinolate (GSL), whereas T2 treatment highly increased the contents of indolic GSL and total GSL. Genes related to GSL biosynthesis were down-regulated in CK and T3 treatments, while a majority of them were greatly up-regulated by T1 and T2. Hence, supplemental 12 μmol·m−2 s−1 UV-A might be a promising strategy to enhance the growth and quality of kale in a plant factory.
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Claims 11
Claim · model-written summary
Supplemental UV-A increased kale moisture content.
- Taxon
- kale
Brassica oleracea var. viridise0 - Treatment
- Supplemental UV-A treatmentse0
- Outcome
- moisture contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplemental UV-A treatments (T1: 6 μmol·m−2 s−1, T2: 12 μmol·m−2 s−1 and T3: 18 μmol·m−2 s−1) resulted in higher moisture content, higher pigment content, and greater leaf area of kale”
Claim · model-written summary
Supplemental UV-A increased kale pigment content.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- Supplemental UV-A treatmentse0
- Outcome
- pigment contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplemental UV-A treatments (T1: 6 μmol·m−2 s−1, T2: 12 μmol·m−2 s−1 and T3: 18 μmol·m−2 s−1) resulted in higher moisture content, higher pigment content, and greater leaf area of kale”
Claim · model-written summary
Supplemental UV-A increased kale leaf area, with T2 highest.
- Taxon
- kaleBrassica oleracea var. viridise0
- Treatment
- T2: 12 μmol·m−2 s−1e1
- Outcome
- leaf areae0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater leaf area of kale while T2 reached its highest point”
e1“T2: 12 μmol·m−2 s−1”
Claim · model-written summary
T2 enhanced kale antioxidant capacity.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- T2 treatmente0
- Outcome
- antioxidant capacitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T2 treatment positively enhanced the antioxidant capacity”
e1“leaf area of kale”
Claim · model-written summary
T2 increased kale soluble protein and soluble sugar contents.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- T2 treatmente0
- Outcome
- contents of soluble protein, soluble sugare0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T2 treatment positively enhanced the antioxidant capacity, increased the contents of soluble protein, soluble sugar and reduced the nitrate content.”
e1“leaf area of kale”
Claim · model-written summary
T2 reduced kale nitrate content.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- T2 treatmente0
- Outcome
- nitrate contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T2 treatment positively enhanced the antioxidant capacity, increased the contents of soluble protein, soluble sugar and reduced the nitrate content.”
e1“leaf area of kale”
Claim · model-written summary
T1 increased kale aliphatic glucosinolate content.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- T1 treatmente0
- Outcome
- content of aliphatic glucosinolatee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T1 treatment markedly increased the content of aliphatic glucosinolate (GSL)”
e1“leaf area of kale”
Claim · model-written summary
T2 increased kale indolic glucosinolate and total glucosinolate contents.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- T2 treatmente0
- Outcome
- contents of indolic GSL and total GSLe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T2 treatment highly increased the contents of indolic GSL and total GSL.”
e1“leaf area of kale”
Claim · model-written summary
Most glucosinolate biosynthesis genes were down-regulated in CK and T3 treatments.
- Taxon
- kaleBrassica oleracea var. viridise1
- Treatment
- CK and T3 treatmentse0
- Outcome
- Genes related to GSL biosynthesise0
- Direction
- down-regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genes related to GSL biosynthesis were down-regulated in CK and T3 treatments”
e1“leaf area of kale”
Claim · model-written summary
Most glucosinolate biosynthesis genes were up-regulated by T1 and T2.
- Taxon
- kaleBrassica oleracea var. viridise2
- Treatment
- T1 and T2e0
- Outcome
- Genes related to GSL biosynthesise1
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a majority of them were greatly up-regulated by T1 and T2”
e1“Genes related to GSL biosynthesis”
e2“leaf area of kale”
Claim · model-written summary
The authors suggest 12 μmol·m−2 s−1 UV-A for kale growth and quality in a plant factory.
- Taxon
- kaleBrassica oleracea var. viridise0
- Outcome
- supplemental 12 μmol·m−2 s−1 UV-Ae0
- Setting
- plant factorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplemental 12 μmol·m−2 s−1 UV-A might be a promising strategy to enhance the growth and quality of kale in a plant factory”
The same questions in other papers
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- positive
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7 papers more in this group
See all 11 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.