Abstract
Plant factories and high-tech greenhouses offer the opportunity to modulate plant growth, morphology and qualitative content through the management of artificial light (intensity, photoperiod and spectrum). In this study, three Light Emitting Diode (LED) lighting systems, with blue (B, 460 nm), red (R, 650 nm) and mixed red + green-yellow + blue (RGB) light were used to grow parsley microgreens to understand how light quality could change the phenotype and the profile of secondary metabolites. Plants showed altered morphological characteristics and higher amounts of secondary metabolites under RGB LEDs treatment. The results demonstrated that microgreens under red light showed the highest fresh yield, petiole length, coumaric acid content but also the highest nitrate content. Plants under RGB light showed the highest dry matter percentage and highest content of total and single polyphenols content, while blue light showed the highest ascorbic acid and ABTS antioxidant activity. Moreover, microgreens under red light showed more compact leaves with less intercellular spaces, while under blue and RGB light, the leaves displayed ticker spongy mesophyll with higher percentage of intercellular spaces. Therefore, the specific spectral band was able to modify not only the metabolic profile, but also it could modulate the differentiation of mesophyll cells. Light quality as a preharvest factor helps to shape the final parsley microgreens product as a whole, not only in terms of yield and quality, but also from a morpho-anatomical point of view.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Red light gave microgreens the highest fresh yield, petiole length and coumaric acid content.
- Taxon
- Parsley
Petroselinum crispumt0 - Treatment
- red lighte1
- Outcome
- fresh yield, petiole length, coumaric acid contente1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e1“microgreens under red light showed the highest fresh yield, petiole length, coumaric acid content but also the highest nitrate content”
Claim · model-written summary
Red light gave microgreens the highest nitrate content.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- red lighte1
- Outcome
- nitrate contente1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e1“microgreens under red light showed the highest fresh yield, petiole length, coumaric acid content but also the highest nitrate content”
Claim · model-written summary
RGB light gave microgreens the highest dry matter percentage.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- RGB lighte2
- Outcome
- dry matter percentagee2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e2“Plants under RGB light showed the highest dry matter percentage and highest content of total and single polyphenols content”
Claim · model-written summary
RGB light gave microgreens the highest total and single polyphenol content.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- RGB lighte2
- Outcome
- total and single polyphenols contente2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e2“Plants under RGB light showed the highest dry matter percentage and highest content of total and single polyphenols content”
Claim · model-written summary
Blue light gave microgreens the highest ascorbic acid and ABTS antioxidant activity.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- blue lighte3
- Outcome
- ascorbic acid and ABTS antioxidant activitye3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e3“blue light showed the highest ascorbic acid and ABTS antioxidant activity”
Claim · model-written summary
Red light gave microgreen leaves more compact, with less intercellular space.
- Taxon
- ParsleyPetroselinum crispumt0
- Organ / stage
- leavese4
- Treatment
- red lighte4
- Outcome
- intercellular spacese4
- Direction
- lesse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e4“microgreens under red light showed more compact leaves with less intercellular spaces”
Claim · model-written summary
Blue and RGB light gave leaves a higher percentage of intercellular spaces in spongy mesophyll.
- Taxon
- ParsleyPetroselinum crispumt0
- Organ / stage
- leavese5
- Treatment
- blue and RGB lighte5
- Outcome
- percentage of intercellular spacese5
- Direction
- highere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e5“under blue and RGB light, the leaves displayed ticker spongy mesophyll with higher percentage of intercellular spaces”
Claim · model-written summary
The specific spectral band could modulate the differentiation of mesophyll cells in microgreens.
- Taxon
- ParsleyPetroselinum crispumt0
- Treatment
- specific spectral bande6
- Outcome
- differentiation of mesophyll cellse6
- Direction
- modulatee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Parsley Microgreens”
e6“the specific spectral band was able to modify not only the metabolic profile, but also it could modulate the differentiation of mesophyll cells”
The same questions in other papers
light · growth · Petroselinum crispum (parsley)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
light · quality: phytochemicals · Petroselinum crispum (parsley)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
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.