Claim · model-written summary
Growth processes (sink activities) of phosphorus-deficient soybean were restricted to a greater extent than photosynthetic capacity.
- Taxon
- soybean
Glycine maxe0 - Outcome
- growth processes (i.e. sink activities)e1
- Qualifier
- restricted to a greater extent than photosynthetic capacitye1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“34-day-old soybean (Glycine max L. Merr.) plants”
e1“accumulation of high starch concentrations in leaves and stems and restricted starch utilization in the dark indicate that growth processes (i.e. sink activities) were restricted to a greater extent than photosynthetic capacity”
Title
Diurnal Starch Accumulation and Utilization in Phosphorus-Deficient Soybean Plants
Jinshu Qiu; Daniel W. Israel PLANT PHYSIOLOGY 1992. doi:10.1104/pp.98.1.316
Other claims from this paper (13)
- Intervention effect Phosphorus deficiency decreased the net CO2 exchange rate of soybean throughout the light period compared with phosphorus-sufficient controls.
- Association In phosphorus-deficient soybean, the decrease in CO2 exchange rate was associated with a decrease in stomatal conductance.
- Association In phosphorus-deficient soybean, the decrease in CO2 exchange rate was associated with an increase in internal CO2 concentration.
- Intervention effect Phosphorus deficiency increased mesophyll resistance in soybean, as the authors interpret the gas exchange observations.
- Intervention effect Phosphorus deficiency decreased assimilate export rate from the youngest fully expanded soybean leaves compared with phosphorus-sufficient controls.
- Intervention effect Phosphorus deficiency increased starch concentrations in the youngest fully expanded soybean leaves compared with phosphorus-sufficient controls.
- Intervention effect Higher starch in phosphorus-deficient soybean leaves resulted from a longer period of net starch accumulation than in phosphorus-sufficient controls.
- Intervention effect Higher starch in phosphorus-deficient soybean leaves resulted from a shorter period of net starch degradation than in phosphorus-sufficient controls.
- Intervention effect Phosphorus deficiency decreased sucrose-P synthase activity in soybean by 27 percent averaged over the diurnal cycle.
- Intervention effect Phosphorus deficiency essentially eliminated diurnal variation in sucrose-P synthase activity in soybean.
- Intervention effect Diurnal variation in nonstructural carbohydrate concentrations in leaves and stems was less pronounced in phosphorus-deficient soybean than in controls.
- Intervention effect Phosphorus-deficient soybean utilized only 30% of its whole plant starch during the dark phase, against 68% in phosphorus-sufficient controls.
- Intervention effect Phosphorus deficiency decreased whole plant leaf area of soybean.