Abstract
Postharvest chilling injury (PCI) reduces fruit quality and shelf-life in tomato (Solanum lycopersicum L.). PCI has been traditionally studied in the pericarp, however its development is likely heterogeneous in different fruit tissues. To gain insight into PCI's spatio-temporal development, we used postharvest biomarkers e.g. respiration and ethylene rates, ion leakage etc., to confirm the occurrence of PCI, and compared these data with molecular (gene expression), biophysical (MRI data) and biochemical parameters (Malondialdehyde (MDA) and starch content) from the pericarp or columella. Tissues were stored at control (12.5 °C) or PCI-inducing temperatures (2.5 or 5 °C) followed by rewarming at 20 °C. MRI and ion leakage revealed that cold irreversibly impairs ripening-associated membrane liquefaction; MRI also showed that the internal and external fruit tissues responded differently to cold. MDA and especially starch contents, were affected by chilling in a tissue-specific manner. The expression of the six genes studied: ACO1 and ACS2 (ripening), CBF1 (cold response), DHN, AOX1a and LoxB (stress-related) showed non-overlapping temporal and spatially-specific responses. Overall, the data highlighted the interconnectedness of fruit cold response and ripening, and showed how cold stress reconfigures the latter. They further underscored that multidimensional spatial and temporal biological studies are needed to develop effective solutions to PCI.
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Claims 5
Claim · model-written summary
Cold irreversibly impaired ripening-associated membrane liquefaction in tomato fruit.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- colde0
- Outcome
- ripening-associated membrane liquefactione0
- Direction
- impairse0
- Comparator
- control (12.5 °C)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MRI and ion leakage revealed that cold irreversibly impairs ripening-associated membrane liquefaction”
t0“cherry tomato fruit”
e1“Tissues were stored at control (12.5 °C) or PCI-inducing temperatures (2.5 or 5 °C) followed by rewarming at 20 °C.”
Claim · model-written summary
Internal and external tomato fruit tissues responded differently to cold.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- internal and external fruit tissues respondede0
- Direction
- differentlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MRI also showed that the internal and external fruit tissues responded differently to cold.”
t0“cherry tomato fruit”
Claim · model-written summary
Chilling affected malondialdehyde content in a tissue-specific manner.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- chillinge0
- Outcome
- MDAe0
- Direction
- affectede0
- Qualifier
- tissue-specific mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MDA and especially starch contents, were affected by chilling in a tissue-specific manner.”
e1“Malondialdehyde (MDA) and starch content”
t0“cherry tomato fruit”
Claim · model-written summary
Chilling affected tomato starch content in a tissue-specific manner.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- chillinge0
- Outcome
- starch contentse0
- Direction
- affectede0
- Qualifier
- tissue-specific mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MDA and especially starch contents, were affected by chilling in a tissue-specific manner.”
t0“cherry tomato fruit”
Claim · model-written summary
The six studied genes had distinct spatial and temporal expression responses.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- ACO1 and ACS2e0
- Outcome
- expressione0
- Direction
- non-overlappinge0
- Qualifier
- temporal and spatially-specific responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of the six genes studied: ACO1 and ACS2 (ripening), CBF1 (cold response), DHN, AOX1a and LoxB (stress-related) showed non-overlapping temporal and spatially-specific responses.”
t0“cherry tomato fruit”
The same questions in other papers
cold · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
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- positive
- negative
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