Abstract
This paper presents some of the effects of cryopreservation of wild Solanum lycopersicum Mill. seeds on the early stages of germination post liquid nitrogen exposure. Percentage of germination, conversion into plantlets and plant fresh mass were evaluated after cryostorage. Levels of chlorophyll pigments (a, b, total), malondialdehyde, other aldehydes, phenolics (cell wall-linked, free, and total) and proteins were determined. Peroxidase and superoxide dismutase activities were recorded. Liquid nitrogen exposure increased the percentage of seed germination at 5 days but at 7 days, the conversion into plantlets and the plant fresh mass were not statistically different between non-cryopreserved and cryopreserved samples. Several significant effects of cryopreservation were recorded at the biochemical level at 7 days of germination under controlled conditions. Highly significant effects due to liquid nitrogen exposure were observed in leaves: increased levels of peroxidase enzymatic and specific activities and cell wall-linked phenolics. Very remarkable effects were also recorded in roots: decreased contents of chlorophylls and cell wall-linked phenolics.
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
Liquid nitrogen exposure increased seed germination at five days.
- Taxon
- Solanum lycopersicum Mill.
Solanum lycopersicumt0 - Treatment
- Liquid nitrogen exposuree0
- Outcome
- percentage of seed germinatione0
- Direction
- increasede0
- Qualifier
- at 5 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“Liquid nitrogen exposure increased the percentage of seed germination at 5 days”
Claim · model-written summary
Plantlet conversion at seven days did not differ statistically between cryopreserved and non-cryopreserved samples.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Treatment
- cryopreservede0
- Outcome
- conversion into plantletse0
- Direction
- not statistically differente0
- Qualifier
- at 7 dayse0
- Comparator
- non-cryopreservede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“at 7 days, the conversion into plantlets and the plant fresh mass were not statistically different between non-cryopreserved and cryopreserved samples”
Claim · model-written summary
Plant fresh mass at seven days did not differ statistically between cryopreserved and non-cryopreserved samples.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Treatment
- cryopreservede0
- Outcome
- plant fresh masse0
- Direction
- not statistically differente0
- Qualifier
- at 7 dayse0
- Comparator
- non-cryopreservede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“at 7 days, the conversion into plantlets and the plant fresh mass were not statistically different between non-cryopreserved and cryopreserved samples”
Claim · model-written summary
Cryopreservation increased leaf peroxidase enzymatic and specific activities at seven days.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- liquid nitrogen exposuree0
- Gene
- peroxidasee0
- Outcome
- peroxidase enzymatic and specific activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“Highly significant effects due to liquid nitrogen exposure were observed in leaves: increased levels of peroxidase enzymatic and specific activities and cell wall-linked phenolics”
Claim · model-written summary
Cryopreservation increased cell wall-linked phenolics in leaves.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- liquid nitrogen exposuree0
- Outcome
- cell wall-linked phenolicse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“Highly significant effects due to liquid nitrogen exposure were observed in leaves: increased levels of peroxidase enzymatic and specific activities and cell wall-linked phenolics”
Claim · model-written summary
Cryopreservation decreased root chlorophyll content.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Organ / stage
- rootse0
- Outcome
- contents of chlorophyllse0
- Direction
- decreasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“Very remarkable effects were also recorded in roots: decreased contents of chlorophylls and cell wall-linked phenolics”
Claim · model-written summary
Cryopreservation decreased root cell wall-linked phenolics.
- Taxon
- Solanum lycopersicum Mill.Solanum lycopersicumt0
- Organ / stage
- rootse0
- Outcome
- cell wall-linked phenolicse0
- Direction
- decreasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Solanum lycopersicum Mill.”
e0“Very remarkable effects were also recorded in roots: decreased contents of chlorophylls and cell wall-linked phenolics”
The same questions in other papers
nitrogen · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
1 paper more in this group
See all 5 papers →in vitro · growth · Solanum lycopersicum (tomato)Positive and negative results
29 papers in the same direction as this paper · 93 in the opposite direction
- positive
- positive
- positive
119 papers more in this group
See all 123 papers →nitrogen · growth · Solanum lycopersicum (tomato)Positive and negative results
107 papers in the same direction as this paper · 45 in the opposite direction
- negative
- negative
- negative
149 papers more in this group
See all 153 papers →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.