Abstract
Low light (LL) stress adversely affects plant growth and productivity. The role of exogenous sucrose in enhancing plant LL tolerance was investigated by spraying sucrose on tomato ( Solanum lycopersicum L.) leaves. This study employed physiological and molecular approaches to identify the underlying mechanisms. Exogenous sucrose activated sucrose hydrolysis-related enzyme activity and upregulated genes encoding sucrose and hexose transporters in mature leaves, decreasing endogenous sucrose levels and promoting sucrose unloading during LL. Stem-related genes associated with sucrose synthesis and transport were also upregulated, enhancing sucrose phloem loading. Furthermore, sucrose from stems activated sucrose unloading in sink leaves, forming a feed-forward loop to sustain sucrose flow during LL. This led to increased nonstructural carbohydrates (NSCs), improved energy metabolism, and enhanced protein synthesis in leaves, ultimately boosting photosynthesis and fruit yield after light recovery. These findings highlight how exogenous sucrose enhances LL tolerance in tomatoes by increasing the transport of NSCs from stems to leaves.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 7
Claim · model-written summary
Sucrose application activated sucrose hydrolysis enzymes and transporter genes in mature tomato leaves.
- Taxon
- tomato
Solanum lycopersicumt0 - Organ / stage
- mature leavese0
- Treatment
- Exogenous sucrosee0
- Outcome
- sucrose hydrolysis-related enzyme activity and upregulated genes encoding sucrose and hexose transporterse0
- Direction
- activatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous sucrose activated sucrose hydrolysis-related enzyme activity and upregulated genes encoding sucrose and hexose transporters in mature leaves”
t0“Tomato Plants”
Claim · model-written summary
Sucrose application decreased endogenous sucrose in mature tomato leaves during low light.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Exogenous Sucroset0
- Outcome
- endogenous sucrose levelse0
- Direction
- decreasinge0
- Qualifier
- during LLe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreasing endogenous sucrose levels and promoting sucrose unloading during LL”
t0“Exogenous Sucrose Confers Low Light Tolerance in Tomato Plants”
Claim · model-written summary
Sucrose application promoted unloading in tomato mature leaves during low light.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Exogenous Sucroset0
- Outcome
- sucrose unloadinge0
- Direction
- promotinge0
- Qualifier
- during LLe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreasing endogenous sucrose levels and promoting sucrose unloading during LL”
t0“Exogenous Sucrose Confers Low Light Tolerance in Tomato Plants”
Claim · model-written summary
Stem sucrose synthesis and transport genes were upregulated, enhancing phloem loading.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- Steme0
- Gene
- Stem-related genes associated with sucrose synthesis and transporte0
- Outcome
- sucrose phloem loadinge0
- Direction
- enhancinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stem-related genes associated with sucrose synthesis and transport were also upregulated, enhancing sucrose phloem loading”
t0“Tomato Plants”
Claim · model-written summary
Stem sucrose activated unloading in sink leaves during low light.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- sink leavese0
- Outcome
- sucrose unloadinge0
- Direction
- activatede0
- Qualifier
- feed-forward loop to sustain sucrose flow during LLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sucrose from stems activated sucrose unloading in sink leaves, forming a feed-forward loop to sustain sucrose flow during LL”
t0“Tomato Plants”
Claim · model-written summary
Sucrose treatment increased leaf nonstructural carbohydrates, energy metabolism, and protein synthesis.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- Exogenous Sucroset0
- Outcome
- nonstructural carbohydrates (NSCs), improved energy metabolism, and enhanced protein synthesise0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This led to increased nonstructural carbohydrates (NSCs), improved energy metabolism, and enhanced protein synthesis in leaves”
t0“Exogenous Sucrose Confers Low Light Tolerance in Tomato Plants”
Claim · model-written summary
Sucrose treatment boosted tomato photosynthesis and fruit yield after light recovery.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Exogenous Sucroset0
- Outcome
- photosynthesis and fruit yielde0
- Direction
- boostinge0
- Qualifier
- after light recoverye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultimately boosting photosynthesis and fruit yield after light recovery”
t0“Exogenous Sucrose Confers Low Light Tolerance in Tomato Plants”
The same questions in other papers
sucrose · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
1 in the opposite direction
- negative
sucrose · quality: sugar starch · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
2 papers more in this group
See all 6 papers →sucrose · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
2 papers more in this group
See all 6 papers →sucrose · molecular: expression · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- 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.