Abstract
Ammonium toxicity resulted in morphological modifications of tomato leaf chloroplasts. The chloroplasts, which are normally flattened around the protoplast periphery, became ellipsoidally rounded and dispersed through the protoplasm. The first apparent effect of plastid degradation was development of many vesicles from the fretwork. Later the grana lamellae swelled, and some disappeared. Eventually, distinct grana could not be detected.Ammonium accumulation, chlorophyll loss, and photosynthetic decrease occurred simultaneously. Initial changes in these processes preceded the detection of modifications of fine structure; however, each continued with further breakdown of the chloroplasts.
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Claims 9
Claim · model-written summary
Ammonium toxicity resulted in morphological modifications of tomato leaf chloroplasts.
- Taxon
- Tomato
Solanum lycopersicumt0 - Organ / stage
- tomato leaf chloroplastse1
- Treatment
- Ammonium toxicitye1
- Outcome
- morphological modifications of tomato leaf chloroplastse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e1“Ammonium toxicity resulted in morphological modifications of tomato leaf chloroplasts”
Claim · model-written summary
Under ammonium toxicity, chloroplasts became ellipsoidally rounded and dispersed through the protoplasm.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- chloroplastse2
- Treatment
- Ammonium toxicitye1
- Outcome
- ellipsoidally rounded and dispersed through the protoplasme2
- Comparator
- normally flattened around the protoplast peripherye2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e1“Ammonium toxicity resulted in morphological modifications of tomato leaf chloroplasts”
e2“The chloroplasts, which are normally flattened around the protoplast periphery, became ellipsoidally rounded and dispersed through the protoplasm”
Claim · model-written summary
The first apparent effect of plastid degradation was development of many vesicles from the fretwork.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- plastide3
- Outcome
- development of many vesiclese3
- Qualifier
- from the fretworke3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e3“The first apparent effect of plastid degradation was development of many vesicles from the fretwork”
Claim · model-written summary
Later, grana lamellae swelled in ammonium-treated tomato leaf chloroplasts.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- grana lamellaee4
- Outcome
- grana lamellae swellede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e4“Later the grana lamellae swelled, and some disappeared”
Claim · model-written summary
Later, some grana lamellae disappeared.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- grana lamellaee4
- Outcome
- some disappearede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e4“Later the grana lamellae swelled, and some disappeared”
Claim · model-written summary
Distinct grana could no longer be detected eventually.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- distinct grana could not be detectede5
- Qualifier
- Eventuallye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e5“Eventually, distinct grana could not be detected”
Claim · model-written summary
Ammonium accumulation, chlorophyll loss and photosynthetic decrease occurred simultaneously.
- Taxon
- TomatoSolanum lycopersicumt0
- Compound
- Ammoniume6
- Outcome
- Ammonium accumulation, chlorophyll loss, and photosynthetic decreasee6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e6“Ammonium accumulation, chlorophyll loss, and photosynthetic decrease occurred simultaneously”
Claim · model-written summary
Initial changes in these processes preceded detection of fine-structure modifications.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- Initial changes in these processese7
- Comparator
- detection of modifications of fine structuree7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e7“Initial changes in these processes preceded the detection of modifications of fine structure”
Claim · model-written summary
Each process continued with further breakdown of the chloroplasts.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- further breakdown of the chloroplastse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Leaf Chloroplasts”
e7“however, each continued with further breakdown of the chloroplasts”
The same questions in other papers
nitrogen · organism · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.