Claim · model-written summary
The response of bean plants to Rb+ was very similar to their response to Na+.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Verbatim
e0“The effect of Rb + and Na + as counter-cations of HCO 3 − was evaluated on bean ( Phaseolus vulgaris L. cv. Poncho) plants using mixture experiment statistical methodology in a series of experiments set up in a controlled environment chamber”
e7“because the response of plants to Rb + was very similar to that of Na +”
Title
Quantitative Separation of the Bicarbonate from the Counter-cation Effect in Bean Plants
Luis A. Valdez-Aguilar; David William Reed; John A. Cornell Journal of the American Society for Horticultural Science 2008. doi:10.21273/jashs.133.3.468
Other claims from this paper (11)
- Intervention effect Rubidium decreased shoot dry weight of bean plants in a controlled environment chamber.
- Intervention effect Adding HCO3- to Rb+ solutions lowered shoot dry weight accumulation of bean plants further.
- Intervention effect The toxic effect of Na+ decreased shoot dry weight of bean plants by 3.7% per millimolar increase of Na+.
- Intervention effect At 2.5 mM HCO3-, shoot dry weight of bean plants decreased by 12.7% per millimolar HCO3-.
- Intervention effect At 3.75 mM HCO3-, shoot dry weight of bean plants decreased by 11.0% per millimolar HCO3-.
- Intervention effect At 5 mM HCO3-, shoot dry weight of bean plants decreased by 7.8% per millimolar HCO3-.
- Intervention effect At 5.65 mM HCO3-, shoot dry weight of bean plants decreased by 10.7% per millimolar HCO3-.
- Intervention effect At 7.5 mM HCO3-, shoot dry weight of bean plants decreased by 4.2% to 8.2% per millimolar increase in HCO3-.
- Mechanism The decreasing rate of shoot dry weight with HCO3- may be explained by a nonadditive effect between HCO3- and Na+ at high alkalinity.
- Observation Bean plants did not respond to K+ in the experiments, probably because K+ was present at a minimum concentration or supplied in the preestablishing solution.
- Method / resource Separation of the toxic effects of HCO3- and counter-cations was possible only when the individual stresses were additive.