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“dry weight decrease”

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Organism: Solanum tuberosum ✕

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Total tuber dry weight decreased.

Taxon: potatoSolanum tuberosumt0
Outcome: total tuber dry weighte0
Direction: decreasee0

Verbatim

e0
“The changes in carbohydrate accumulation are accompanied by a decrease in total tuber dry weight and a reduction of soluble tuber proteins”
✓ located verbatim in the source · abstract, characters 1159–1297

t0
“potato”
✓ located verbatim in the source · title, characters 84–90

Title

Evidence of the crucial role of sucrose synthase for sink strength using transgenic potato plants (Solanum tuberosum L.)

Rita Zrenner; Marcel Salanoubat; Lothar Willmitzer; et al. The Plant Journal 1995. doi:10.1046/j.1365-313x.1995.07010097.x

Other claims from this paper (12)

Observation Inhibition of Susy activity in the antisense plants was tuber-specific.
Intervention effect Susy inhibition caused no change in sucrose content in developing potato tubers.
Intervention effect Susy inhibition caused a strong accumulation of reducing sugars in developing potato tubers.
Intervention effect Susy inhibition inhibited starch accumulation in developing potato tubers.
Observation Invertase activities increased 40-fold in parallel with the increase in hexoses.
Observation Hexokinase activities showed no considerable changes.
Observation The reduction in starch accumulation was not due to inhibition of the major starch biosynthetic enzymes.
Observation Soluble tuber proteins were reduced.
Observation The reduced protein accumulation was mainly due to a decrease in patatin, the 22 kDa proteins and the proteinase inhibitors.
Observation The lowered storage protein accumulation was not a consequence of the availability of the free amino acid pool in potato tubers.
Intervention effect Susy antisense plants showed no increase in tuber number per plant.
Mechanism The authors conclude that sucrose synthase is the major determinant of potato tuber sink strength.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

PsJN reduced Chaleur root dry weight by 50%.

Taxon: potatoesSolanum tuberosume1
Material: Chaleure0
Treatment: Inoculatede0
Interactor: strain PsJNe1other
Outcome: root dry weighte0
Direction: decreasee0
Value: 50%e0

Not reportedComparator

Verbatim

e0
“Inoculated plantlets of cultivars Norchip, Kennebec, Shepody, and Chaleur showed, in root dry weight, a five- to eight-fold increase, two- to three-fold increase, no response, and a decrease of 50%, respectively.”
✓ located verbatim in the source · abstract, characters 620–832

e1
“growth promotion of potatoes by strain PsJN was cultivar specific”
✓ located verbatim in the source · abstract, characters 553–618

Title

A gnotobiotic bioassay for studying interactions between potatoes and plant growth-promoting rhizobacteria

Kenneth L. Conn; George Lazarovits; Jerzy Nowak Canadian Journal of Microbiology 1997. doi:10.1139/m97-117

Other claims from this paper (10)

Method / resource The gnotobiotic potato bioassay was highly useful for testing growth promotion by PsJN.
Intervention effect PsJN increased root dry weight five- to eight-fold in Norchip.
Intervention effect PsJN increased root dry weight two- to three-fold in Kennebec.
Intervention effect Shepody root dry weight did not respond to PsJN inoculation.
Method / resource Haulm dry weight followed root trends but was less consistent as an indicator.
Method / resource Minor medium, temperature and light changes did not materially change bioassay results.
Method / resource Screening eliminated 93% of transconjugates retaining growth-promotion activity.
Method / resource Seven retested isolates were confirmed to have lost growth-promoting ability.
Intervention effect Other bacterial genera did not increase potato plantlet growth.
Intervention effect Several other bacterial isolates inhibited potato root and haulm growth.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Shepody root dry weight did not respond to PsJN inoculation.

Taxon: potatoesSolanum tuberosume1
Material: Shepodye0
Treatment: Inoculatede0
Interactor: strain PsJNe1other
Outcome: root dry weighte0
Direction: no responsee0

Not reportedComparator

Verbatim

e0
“Inoculated plantlets of cultivars Norchip, Kennebec, Shepody, and Chaleur showed, in root dry weight, a five- to eight-fold increase, two- to three-fold increase, no response, and a decrease of 50%, respectively.”
✓ located verbatim in the source · abstract, characters 620–832

e1
“growth promotion of potatoes by strain PsJN was cultivar specific”
✓ located verbatim in the source · abstract, characters 553–618

Title

A gnotobiotic bioassay for studying interactions between potatoes and plant growth-promoting rhizobacteria

Kenneth L. Conn; George Lazarovits; Jerzy Nowak Canadian Journal of Microbiology 1997. doi:10.1139/m97-117

Other claims from this paper (10)

Method / resource The gnotobiotic potato bioassay was highly useful for testing growth promotion by PsJN.
Intervention effect PsJN increased root dry weight five- to eight-fold in Norchip.
Intervention effect PsJN increased root dry weight two- to three-fold in Kennebec.
Intervention effect PsJN reduced Chaleur root dry weight by 50%.
Method / resource Haulm dry weight followed root trends but was less consistent as an indicator.
Method / resource Minor medium, temperature and light changes did not materially change bioassay results.
Method / resource Screening eliminated 93% of transconjugates retaining growth-promotion activity.
Method / resource Seven retested isolates were confirmed to have lost growth-promoting ability.
Intervention effect Other bacterial genera did not increase potato plantlet growth.
Intervention effect Several other bacterial isolates inhibited potato root and haulm growth.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PsJN increased root dry weight five- to eight-fold in Norchip.

Taxon: potatoesSolanum tuberosume1
Material: Norchipe0
Treatment: Inoculatede0
Interactor: strain PsJNe1other
Outcome: root dry weighte0
Direction: increasee0
Value: five- to eight-folde0

Not reportedComparator

Verbatim

e0
“Inoculated plantlets of cultivars Norchip, Kennebec, Shepody, and Chaleur showed, in root dry weight, a five- to eight-fold increase, two- to three-fold increase, no response, and a decrease of 50%, respectively.”
✓ located verbatim in the source · abstract, characters 620–832

e1
“growth promotion of potatoes by strain PsJN was cultivar specific”
✓ located verbatim in the source · abstract, characters 553–618

Title

A gnotobiotic bioassay for studying interactions between potatoes and plant growth-promoting rhizobacteria

Kenneth L. Conn; George Lazarovits; Jerzy Nowak Canadian Journal of Microbiology 1997. doi:10.1139/m97-117

Other claims from this paper (10)

Method / resource The gnotobiotic potato bioassay was highly useful for testing growth promotion by PsJN.
Intervention effect PsJN increased root dry weight two- to three-fold in Kennebec.
Intervention effect Shepody root dry weight did not respond to PsJN inoculation.
Intervention effect PsJN reduced Chaleur root dry weight by 50%.
Method / resource Haulm dry weight followed root trends but was less consistent as an indicator.
Method / resource Minor medium, temperature and light changes did not materially change bioassay results.
Method / resource Screening eliminated 93% of transconjugates retaining growth-promotion activity.
Method / resource Seven retested isolates were confirmed to have lost growth-promoting ability.
Intervention effect Other bacterial genera did not increase potato plantlet growth.
Intervention effect Several other bacterial isolates inhibited potato root and haulm growth.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

PsJN increased root dry weight two- to three-fold in Kennebec.

Taxon: potatoesSolanum tuberosume1
Material: Kennebece0
Treatment: Inoculatede0
Interactor: strain PsJNe1other
Outcome: root dry weighte0
Direction: increasee0
Value: two- to three-folde0

Not reportedComparator

Verbatim

e0
“Inoculated plantlets of cultivars Norchip, Kennebec, Shepody, and Chaleur showed, in root dry weight, a five- to eight-fold increase, two- to three-fold increase, no response, and a decrease of 50%, respectively.”
✓ located verbatim in the source · abstract, characters 620–832

e1
“growth promotion of potatoes by strain PsJN was cultivar specific”
✓ located verbatim in the source · abstract, characters 553–618

Title

A gnotobiotic bioassay for studying interactions between potatoes and plant growth-promoting rhizobacteria

Kenneth L. Conn; George Lazarovits; Jerzy Nowak Canadian Journal of Microbiology 1997. doi:10.1139/m97-117

Other claims from this paper (10)

Method / resource The gnotobiotic potato bioassay was highly useful for testing growth promotion by PsJN.
Intervention effect PsJN increased root dry weight five- to eight-fold in Norchip.
Intervention effect Shepody root dry weight did not respond to PsJN inoculation.
Intervention effect PsJN reduced Chaleur root dry weight by 50%.
Method / resource Haulm dry weight followed root trends but was less consistent as an indicator.
Method / resource Minor medium, temperature and light changes did not materially change bioassay results.
Method / resource Screening eliminated 93% of transconjugates retaining growth-promotion activity.
Method / resource Seven retested isolates were confirmed to have lost growth-promoting ability.
Intervention effect Other bacterial genera did not increase potato plantlet growth.
Intervention effect Several other bacterial isolates inhibited potato root and haulm growth.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Foliar N, Ca, Mg, P and S concentrations tended to decrease with elevated CO2 and reduced temperature.

Taxon: potatoSolanum tuberosume0
Treatment: elevated CO 2 , and reduced temperaturee1
Outcome: concentrations of N, Ca, Mg, P and Se1
Direction: decreasee1
Qualifier: tended toe1

Not reportedComparator

Verbatim

e0
“potato”
✓ located verbatim in the source · abstract, characters 95–101

e1
“the concentrations of N, Ca, Mg, P and S on dry weight basis tended to decrease with elevated CO 2 , and reduced temperature”
✓ located verbatim in the source · abstract, characters 676–800

Title

CO2 AND TEMPERATURE INTERACTION ON STARCH AND MINERAL CONCENTRATIONS IN POTATO LEAVES

W. Cao; T.W. Tibbitts HortScience 1993. doi:10.21273/hortsci.28.5.518d

Other claims from this paper (6)

Intervention effect Potato leaf starch increased from 4.4% to 18.5% dry weight with increased CO2 and decreased temperature.
Association Starch concentration was linearly related to specific leaf weight with R2 of 0.97.
Intervention effect Foliar K concentration did not change with CO2 level.
Observation Foliar K concentration was higher at 16C than at 20C.
Association Combined N, Ca, Mg, P and S concentration was negatively related to starch concentration up to 14%.
Association Above 14% starch, combined mineral concentrations changed only slightly.

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Soluble tuber proteins were reduced.

Taxon: potatoSolanum tuberosumt0
Outcome: soluble tuber proteinse0
Direction: reductione0

Verbatim

e0
“The changes in carbohydrate accumulation are accompanied by a decrease in total tuber dry weight and a reduction of soluble tuber proteins”
✓ located verbatim in the source · abstract, characters 1159–1297

t0
“potato”
✓ located verbatim in the source · title, characters 84–90

Title

Evidence of the crucial role of sucrose synthase for sink strength using transgenic potato plants (Solanum tuberosum L.)

Rita Zrenner; Marcel Salanoubat; Lothar Willmitzer; et al. The Plant Journal 1995. doi:10.1046/j.1365-313x.1995.07010097.x

Other claims from this paper (12)

Observation Inhibition of Susy activity in the antisense plants was tuber-specific.
Intervention effect Susy inhibition caused no change in sucrose content in developing potato tubers.
Intervention effect Susy inhibition caused a strong accumulation of reducing sugars in developing potato tubers.
Intervention effect Susy inhibition inhibited starch accumulation in developing potato tubers.
Observation Invertase activities increased 40-fold in parallel with the increase in hexoses.
Observation Hexokinase activities showed no considerable changes.
Observation The reduction in starch accumulation was not due to inhibition of the major starch biosynthetic enzymes.
Observation Total tuber dry weight decreased.
Observation The reduced protein accumulation was mainly due to a decrease in patatin, the 22 kDa proteins and the proteinase inhibitors.
Observation The lowered storage protein accumulation was not a consequence of the availability of the free amino acid pool in potato tubers.
Intervention effect Susy antisense plants showed no increase in tuber number per plant.
Mechanism The authors conclude that sucrose synthase is the major determinant of potato tuber sink strength.

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“dry weight decrease”

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