Abstract
Low light stress seriously affects the growth and yield of crops and the phytohormone brassinosteroid (BRs) plays a vital role in regulating plant adaptation to low light conditions. However, the molecular mechanism underlying this process remains largely unknown. In this study, we showed that exogenous BR effectively alleviated damages to photosynthesis and antioxidant systems, improved the plant biomass under low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.). Comparative transcriptome profiling analysis revealed that genes related with photosynthesis and Calvin cycle pathways were enriched among the differentially expressed genes (DEG) co-regulated by low light stress and BR. The combination of transcriptome and metabolome analysis showed that BR could mitigate the down-regulation of photosynthesis and Calvin cycle caused by low light stress, and partially restore the up-regulation of Glycolysis / Gluconeogenesis and tricarboxylic acid (TCA) cycle through transcriptional and metabolic reprogramming to alleviate the effects of low light stress. Moreover, we further identified the crucial transcription factors, SIEPR1 and SIERF059, and their potential target genes involved in the regulation of low light stress alleviation mediated by BR signaling. Our results shed new light on the molecular mechanisms underlying the alleviation of low light stress by BR.
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Claims 6
Claim · model-written summary
Exogenous brassinosteroid alleviated low-light damage to photosynthesis and antioxidant systems in tomato.
- Taxon
- tomato
Solanum lycopersicume2 - Treatment
- exogenous BRe1
- Outcome
- damages to photosynthesis and antioxidant systemse1
- Direction
- alleviatede1
- Comparator
- low light stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exogenous BR effectively alleviated damages to photosynthesis and antioxidant systems”
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Exogenous brassinosteroid improved plant biomass of tomato under low light stress.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- exogenous BRe1
- Outcome
- plant biomasse3
- Direction
- improvede3
- Comparator
- low light stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“exogenous BR effectively alleviated damages to photosynthesis and antioxidant systems”
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
e3“improved the plant biomass under low light stress mimicking treatments”
Claim · model-written summary
Genes related with photosynthesis and the Calvin cycle were enriched among differentially expressed genes co-regulated by low light stress and brassinosteroid in tomato.
- Taxon
- tomatoSolanum lycopersicume2
- Outcome
- genes related with photosynthesis and Calvin cycle pathwayse4
- Direction
- enrichede4
- Qualifier
- co-regulated by low light stress and BRe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
e4“genes related with photosynthesis and Calvin cycle pathways were enriched among the differentially expressed genes (DEG) co-regulated by low light stress and BR”
Claim · model-written summary
Brassinosteroid mitigated the down-regulation of photosynthesis and the Calvin cycle caused by low light stress in tomato.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- BRe5
- Outcome
- down-regulation of photosynthesis and Calvin cyclee5
- Direction
- mitigatee5
- Comparator
- low light stresse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
e5“BR could mitigate the down-regulation of photosynthesis and Calvin cycle caused by low light stress”
Claim · model-written summary
Brassinosteroid partially restored the up-regulation of glycolysis/gluconeogenesis and the TCA cycle under low light stress in tomato.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- BRe5
- Outcome
- up-regulation of Glycolysis / Gluconeogenesis and tricarboxylic acid (TCA) cyclee6
- Direction
- partially restoree6
- Comparator
- low light stresse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
e5“BR could mitigate the down-regulation of photosynthesis and Calvin cycle caused by low light stress”
e6“partially restore the up-regulation of Glycolysis / Gluconeogenesis and tricarboxylic acid (TCA) cycle”
Claim · model-written summary
The transcription factors SIEPR1 and SIERF059 were identified as crucial regulators of brassinosteroid-mediated low light stress alleviation in tomato.
- Taxon
- tomatoSolanum lycopersicume2
- Gene
- SIEPR1 and SIERF059e7
- Outcome
- regulation of low light stress alleviation mediated by BR signalinge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“low light stress mimicking treatments in tomato (Lycopersicon esculentum Mill.)”
e7“we further identified the crucial transcription factors, SIEPR1 and SIERF059, and their potential target genes involved in the regulation of low light stress alleviation mediated by BR signaling”
The same questions in other papers
brassinolide · growth · Solanum lycopersicum (tomato)Positive and negative results
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- positive
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1 paper more in this group
See all 5 papers →brassinolide · physiology: photosynthesis · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
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brassinolide · molecular: expression · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
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- 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.