Abstract
Light plays a pivotal role in plant growth, development, and stress responses. Green light has been reported to enhance plant drought tolerance via stomatal regulation. However, the mechanisms of green light-induced drought tolerance in plants remain elusive. To uncover those mechanisms, we investigated the molecular responses of tomato plants under monochromatic red, blue, and green light spectrum with drought and well-water conditions using a comparative transcriptomic approach. The results showed that compared with monochromatic red and blue light treated plants, green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity, and induced lower stomatal aperture and higher ABA accumulation in tomato leaves after 9 days of drought stress. A total of 3,850 differentially expressed genes (DEGs) was identified in tomato leaves through pairwise comparisons. Functional annotations revealed that those DEGs responses to green light under drought stress were enriched in plant hormone signal transduction, phototransduction, and calcium signaling pathway. The DEGs involved in ABA synthesis and ABA signal transduction both participated in the green light-induced drought tolerance of tomato plants. Compared with ABA signal transduction, more DEGs related to ABA synthesis were detected under different light spectral treatments. The bZIP transcription factor- HY5 was found to play a vital role in green light-induced drought responses. Furthermore, other transcription factors, including WRKY46 and WRKY81 might participate in the regulation of stomatal aperture and ABA accumulation under green light. Taken together, the results of this study might expand our understanding of green light-modulated tomato drought tolerance via regulating ABA accumulation and stomatal aperture.
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Claims 11
Claim · model-written summary
Green light alleviated drought-induced inhibition of tomato growth relative to red and blue light.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- green lighte0
- Outcome
- plant growthe0
- Direction
- alleviatede0
- Comparator
- monochromatic red and blue light treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with monochromatic red and blue light treated plants, green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity”
t0“Tomato”
Claim · model-written summary
Green light alleviated drought-induced inhibition of photosynthetic capacity relative to red and blue light.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- green lighte0
- Outcome
- photosynthetic capacitye0
- Direction
- alleviatede0
- Comparator
- monochromatic red and blue light treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with monochromatic red and blue light treated plants, green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity”
t0“Tomato”
Claim · model-written summary
Green light yielded lower stomatal aperture in tomato leaves after nine days of drought.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- green lighte0
- Outcome
- stomatal aperturee0
- Direction
- lowere0
- Qualifier
- after 9 days of drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity, and induced lower stomatal aperture and higher ABA accumulation in tomato leaves after 9 days of drought stress”
Claim · model-written summary
Green light yielded higher ABA accumulation in tomato leaves after nine days of drought.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- green lighte0
- Outcome
- ABA accumulatione0
- Direction
- highere0
- Qualifier
- after 9 days of drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light alleviated the drought-induced inhibition of plant growth and photosynthetic capacity, and induced lower stomatal aperture and higher ABA accumulation in tomato leaves after 9 days of drought stress”
Claim · model-written summary
Pairwise comparisons identified 3,850 differentially expressed genes in tomato leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Outcome
- differentially expressed genese0
- Value
- 3,850e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A total of 3,850 differentially expressed genes (DEGs) was identified in tomato leaves through pairwise comparisons.”
Claim · model-written summary
Green-light responsive drought DEGs were enriched in hormone signal transduction, phototransduction, and calcium signaling.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- plant hormone signal transduction, phototransduction, and calcium signaling pathwaye0
- Qualifier
- green light under drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those DEGs responses to green light under drought stress were enriched in plant hormone signal transduction, phototransduction, and calcium signaling pathway”
t0“Tomato”
Claim · model-written summary
DEGs involved in ABA synthesis and signal transduction participated in green-light induced drought tolerance.
- Taxon
- tomato plantsSolanum lycopersicume0
- Gene
- DEGse0
- Outcome
- green light-induced drought tolerancee0
- Qualifier
- ABA synthesis and ABA signal transductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DEGs involved in ABA synthesis and ABA signal transduction both participated in the green light-induced drought tolerance of tomato plants.”
Claim · model-written summary
More ABA synthesis related DEGs than ABA signal transduction DEGs were found across light treatments.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- DEGs related to ABA synthesise0
- Direction
- moree0
- Comparator
- ABA signal transductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with ABA signal transduction, more DEGs related to ABA synthesis were detected under different light spectral treatments.”
t0“Tomato”
Claim · model-written summary
HY5 was found to play a vital role in green-light induced drought responses.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- HY5e0
- Outcome
- green light-induced drought responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bZIP transcription factor- HY5 was found to play a vital role in green light-induced drought responses.”
t0“Tomato”
Claim · model-written summary
WRKY46 might regulate stomatal aperture and ABA accumulation under green light.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- WRKY46e0
- Outcome
- stomatal aperture and ABA accumulatione0
- Qualifier
- under green lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“other transcription factors, including WRKY46 and WRKY81 might participate in the regulation of stomatal aperture and ABA accumulation under green light”
t0“Tomato”
Claim · model-written summary
WRKY81 might regulate stomatal aperture and ABA accumulation under green light.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- WRKY81e0
- Outcome
- stomatal aperture and ABA accumulatione0
- Qualifier
- under green lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“other transcription factors, including WRKY46 and WRKY81 might participate in the regulation of stomatal aperture and ABA accumulation under green light”
t0“Tomato”
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