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Monochromatic red light during plant growth decreases the size and improves the functionality of stomata in chrysanthemum
- Source :
- Functional Plant Biology, 48(5), Functional Plant Biology 48 (2021) 5
- Publication Year :
- 2021
-
Abstract
- Light emitting diodes (LEDs) now enable precise light quality control. Prior to commercialisation however, the plant response to the resultant light quality regime ought to be addressed. The response was examined here in chrysanthemum by evaluating growth, chlorophyll fluorescence (before and following water deficit), as well as stomatal anatomy (density, size, pore dimensions and aperture heterogeneity) and closing ability. Plants were grown under blue (B), red (R), a mixture of R (70%) and B (RB), or white (W; 41% B, 39% intermediate spectrum, 20% R) light LEDs. Although R light promoted growth, it also caused leaf deformation (epinasty) and disturbed the photosynthetic electron transport system. The largest stomatal size was noted following growth under B light, whereas the smallest under R light. The largest stomatal density was observed under W light. Monochromatic R light stimulated both the rate and the degree of stomatal closure in response to desiccation compared with the other light regimes. We conclude that stomatal size is mainly controlled by the B spectrum, whereas a broader spectral range is important for determining stomatal density. Monochromatic R light enhanced stomatal ability to regulate water loss upon desiccation.
- Subjects :
- O-J-I-P-transient
stomatal closing ability
Light
Chrysanthemum
stomatal size
stomatal anatomy
Plant Science
Biology
Photosynthesis
law.invention
Electron Transport
law
Chlorophyll fluorescence
indoor horticulture
Chrysanthemum morifolium
LED
Horticulture & Product Physiology
biology.organism_classification
Electron transport chain
blue light
Light quality
light emitting diode
red light
Plant Leaves
Horticulture
light quality
Monochromatic color
Desiccation
Agronomy and Crop Science
Tuinbouw & Productfysiologie
white light
Light-emitting diode
Subjects
Details
- Language :
- English
- ISSN :
- 14454408
- Database :
- OpenAIRE
- Journal :
- Functional Plant Biology, 48(5), Functional Plant Biology 48 (2021) 5
- Accession number :
- edsair.doi.dedup.....ee0d20ceb1dccc565083216a6bf2e0e0