Search claims · PlantClaims

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Transcript levels of plastid fructose-1,6-bisphosphatase and Rubisco small subunit did not decrease in antisense plants.

Taxon: potato plantsSolanum tuberosumt0
Gene: plastid fructose‐1,6‐bisphosphatasee4
Outcome: Transcript levelse4
Direction: did not decreasee4

Verbatim

e4
“Transcript levels for the plastid fructose‐1,6‐bisphosphatase and the small subunit of Rubisco did not decrease”
✓ located verbatim in the source · abstract, characters 1229–1340

t0
“Changes in aldolase activity in wild‐type potato plants are important for acclimation to growth irradiance and carbon dioxide concentration”
✓ located verbatim in the source · title, characters 0–139

Title

Changes in aldolase activity in wild‐type potato plants are important for acclimation to growth irradiance and carbon dioxide concentration, because plastid aldolase exerts control over the ambient rate of photosynthesis across a range of growth conditions

Volker Haake; Michael Geiger; Pia Walch‐Liu; et al. The Plant Journal 1999. doi:10.1046/j.1365-313x.1999.00391.x

Other claims from this paper (8)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Glucose did not lower 18S rRNA or transcripts for two glycolytic enzymes.

Taxon: ChenopodiumChenopodiume1
Treatment: glucosee1
Outcome: 18S rRNA or transcript for two glycolytic enzymese0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“but did not decrease 18S rRNA or transcript for two glycolytic enzymes”
✓ located verbatim in the source · abstract, characters 341–411

e1
“Addition of glucose to autotrophic cell suspension cultures of Chenopodium”
✓ located verbatim in the source · abstract, characters 154–228

Title

Regulation of the expression of rbcS and other photosynthetic genes by carbohydrates: a mechanism for the 'sink regulation' of photosynthesis?

Anne Krapp; Bettina Hofmann; Christian Schafer; et al. The Plant Journal 1993. doi:10.1046/j.1365-313x.1993.03060817.x

Other claims from this paper (11)

Intervention effect Glucose reversibly lowered rbcS, cab and atp-& transcripts in Chenopodium cultures within five hours.
Intervention effect Glucose treatment decreased transcription rate in isolated nuclei.
Observation De novo Rubisco synthesis was inhibited.
Intervention effect Glucose feeding decreased rbcS transcript in detached leaves.
Intervention effect Apoplast invertase expression decreased rbcS transcript in transgenic plants.
Intervention effect Cold girdling decreased rbcS transcript in intact tobacco leaves within 12 hours.
Intervention effect Cold girdling decreased rbcS transcript in intact potato leaves within 12 hours.
Mechanism Carbohydrate content itself was not the direct signal regulating gene expression.
Mechanism Transported analogues indicated that sugar metabolism rather than transport was required.
Intervention effect Low CO2 was associated with rbcS overexpression.
Mechanism The authors propose that high carbohydrate linked metabolic factors inhibit photosynthetic gene expression.

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Carbohydrate content per se is not the direct signal regulating photosynthetic gene expression

Taxon: ChenopodiumChenopodiume0
Compound: carbohydrate contente5
Outcome: regulation of gene expressione5

Not reportedDirection

Verbatim

e0
“Addition of glucose to autotrophic cell suspension cultures of Chenopodium led to a large and reversible decrease of the steady state transcript levels of rbcS, cab and atp”
✓ located verbatim in the source · abstract, characters 162–334

e5
“carbohydrate content per se is not the direct signal for regulation of gene expression. Feeding of transported analogues indicates that metabolism rather than transport of the sugars is required”
✓ located verbatim in the source · abstract, characters 1017–1211

Title

Regulation of the expression of rbcS and other photosynthetic genes by carbohydrates: a mechanism for the ‘sink regulation’ of photosynthesis?

Anne Krapp; Bettina Hofmann; Christian Schäfer; et al. The Plant Journal 1993. doi:10.1111/j.1365-313x.1993.00817.x

Other claims from this paper (8)

Intervention effect Glucose addition decreased steady-state rbcS transcript levels in Chenopodium cell cultures
Association Glucose addition decreased transcription rate in isolated nuclei of Chenopodium
Association Glucose addition inhibited de novo synthesis of Rubisco in Chenopodium
Association Feeding glucose to detached leaves decreased rbc S transcript
Association Cold girdling decreased rbc S transcript level within 12 h
Mechanism Sugar metabolism rather than sugar transport is required for the glucose effect on expression
Association Low CO2 over-expressed rbc S in Chenopodium
Mechanism High carbohydrate content may inhibit photosynthetic gene expression as a sink regulation mechanism

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Defense gene induction did not differ between mutant and wild type.

Taxon: citrusCitrust0
Treatment: mutante1
Interactor: Xanthomonas citri pv. citriXanthomonas citri pv. citrit0pathogen
Outcome: induction of genes diagnostic for biotic-stress responsese0
Direction: no differencee0
Comparator: Xanthomonas citri pv. citrit0

Verbatim

e0
“no difference in the induction of genes diagnostic for biotic-stress responses”
✓ located verbatim in the source · abstract, characters 1406–1484

t0
“Xanthomonas citri pv. citri, the bacteria responsible for citrus canker”
✓ located verbatim in the source · abstract, characters 0–71

e1
“leaves infiltrated with the XacPNP deletion mutant show a more pronounced decrease in photosynthetic proteins while no reduction in defense related proteins as compared to the wild-type pathogen”
✓ located verbatim in the source · abstract, characters 894–1088

Title

A Eukaryotic-Acquired Gene by a Biotrophic Phytopathogen Allows Prolonged Survival on the Host by Counteracting the Shut-Down of Plant Photosynthesis

Betiana S. Garavaglia; Ludivine Thomas; Natalia Gottig; et al. PLoS ONE 2010. doi:10.1371/journal.pone.0008950

Other claims from this paper (6)

Observation Both bacterial types downregulated photosynthesis enzymes and chloroplast ribosomal proteins in citrus.
Observation Both bacterial types upregulated defense-response proteins.
Intervention effect The XacPNP deletion mutant caused a more pronounced loss of photosynthetic proteins than the wild type.
Intervention effect The XacPNP deletion mutant did not reduce defense proteins relative to wild type.
Intervention effect Chlorophyll fluorescence showed a greater photosynthetic reduction with the mutant.
Mechanism The authors conclude that XacPNP counteracts host photosynthesis shutdown and prolongs bacterial survival.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

The XacPNP deletion mutant did not reduce defense proteins relative to wild type.

Taxon: citrusCitrust0
Treatment: XacPNP deletion mutante1
Interactor: Xanthomonas citri pv. citriXanthomonas citri pv. citrit0pathogen
Gene: XacPNPe1
Outcome: defense related proteinse0
Direction: no reductione0
Comparator: wild-type pathogene0

Verbatim

e0
“no reduction in defense related proteins as compared to the wild-type pathogen”
✓ located verbatim in the source · abstract, characters 1010–1088

t0
“Xanthomonas citri pv. citri, the bacteria responsible for citrus canker”
✓ located verbatim in the source · abstract, characters 0–71

e1
“leaves infiltrated with the XacPNP deletion mutant show a more pronounced decrease in photosynthetic proteins while no reduction in defense related proteins as compared to the wild-type pathogen”
✓ located verbatim in the source · abstract, characters 894–1088

Title

A Eukaryotic-Acquired Gene by a Biotrophic Phytopathogen Allows Prolonged Survival on the Host by Counteracting the Shut-Down of Plant Photosynthesis

Betiana S. Garavaglia; Ludivine Thomas; Natalia Gottig; et al. PLoS ONE 2010. doi:10.1371/journal.pone.0008950

Other claims from this paper (6)

Observation Both bacterial types downregulated photosynthesis enzymes and chloroplast ribosomal proteins in citrus.
Observation Both bacterial types upregulated defense-response proteins.
Intervention effect The XacPNP deletion mutant caused a more pronounced loss of photosynthetic proteins than the wild type.
Intervention effect Chlorophyll fluorescence showed a greater photosynthetic reduction with the mutant.
Intervention effect Defense gene induction did not differ between mutant and wild type.
Mechanism The authors conclude that XacPNP counteracts host photosynthesis shutdown and prolongs bacterial survival.

“decrease of the photosynthesis”

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