Abstract
Light is known to be an essential stimulus for root development. Considering that the interactions among root illumination, root growth, and whole-plant biomass remain unclear, we evaluated the effects of exposing the root zones of maize and monstera plants to the light from red or blue light-emitting diodes (LEDs) by comparing the root and shoot growth after low- and high-intensity treatments (50 and 100 mol m−2 s−1, respectively). Maize plants exposed to red LED light showed a significantly increased plant biomass in both the shoots and roots, similar to monstera plants exposed to higher light intensities. The water potential in the roots decreased significantly after LED treatment, with a more significant effect observed under red LED light. Glucose and potassium concentrations were quantified to examine the cause of reduced water potential in the roots. The levels of glucose and potassium ions were increased following exposure to LED light treatment compared to those in the controls; red LED light showed greater effects than those of blue LED light. These results indicate that exposing the root zone to light from red LEDs accelerates root and shoot growth. This represents a novel agronomic technology for enhancing crop productivity in hydroponic cultures.
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Claims 7
Claim · model-written summary
Red LED root exposure increased maize shoot and root biomass.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize plants exposed to red LED light showed a significantly increased plant biomass in both the shoots and roots”
Claim · model-written summary
Higher light intensities increased monstera biomass.
MonsteraNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“similar to monstera plants exposed to higher light intensities”
Claim · model-written summary
LED treatment significantly decreased root water potential.
- Treatment
- LED treatmente0
- Outcome
- water potential in the rootse0
- Direction
- decreasede0
- Qualifier
- red LED lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The water potential in the roots decreased significantly after LED treatment, with a more significant effect observed under red LED light”
t0“maize and monstera”
Claim · model-written summary
LED light increased root glucose relative to controls.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of glucose and potassium ions were increased following exposure to LED light treatment compared to those in the controls”
t0“maize and monstera”
Claim · model-written summary
LED light increased root potassium ions relative to controls.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The levels of glucose and potassium ions were increased following exposure to LED light treatment compared to those in the controls”
t0“maize and monstera”
Claim · model-written summary
Red LED light had greater glucose and potassium effects than blue light.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“red LED light showed greater effects than those of blue LED light”
t0“maize and monstera”
Claim · model-written summary
The authors conclude red root LED exposure accelerates root and shoot growth.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposing the root zone to light from red LEDs accelerates root and shoot growth”
t0“maize and monstera”
The same questions in other papers
light · growth · Zea mays (maize)Positive and negative results
28 papers in the same direction as this paper · 27 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
53 papers more in this group
See all 57 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.