Claim · model-written summary
Excess Mn significantly increased stomatal conductance and transpiration rate in both olive cultivars.
- Taxon
- olive
Olea europaeae0 - Treatment
- excess Mne1
- Outcome
- stomatal conductance and transpiration ratee1
- Direction
- increasee1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive cultivars ‘Picual’”
e1“excess Mn resulted in a significant increase of stomatal conductance and transpiration rate of both cultivars, whereas the photosynthetic rate was significantly increased only in ‘Koroneiki’”
Title
DIFFERENTIAL RESPONSE OF TWO OLIVE CULTIVARS TO EXCESS MANGANESE
T. Chatzistathis; I. Papadakis; I. Therios; et al. Journal of Plant Nutrition 2012. doi:10.1080/01904167.2012.653080
Other claims from this paper (14)
- Intervention effect In Picual olive plants, total fresh and dry weights and shoot elongation were significantly reduced under excess Mn compared with control plants.
- Intervention effect Growth of Koroneiki olive plants was similar in both Mn treatments.
- Observation The tolerance index of Picual plants to excess Mn was about half that of Koroneiki plants.
- Intervention effect In both olive cultivars, Mn concentrations in root, stem and leaf parts increased significantly as the Mn concentration in the nutrient solution increased.
- Observation At the high Mn treatment, Koroneiki had 2 to 2.5-fold greater Mn concentrations than Picual in almost all plant parts.
- Observation Koroneiki absorbed much more Mn from the nutrient solution than Picual, giving a higher total Mn content per plant.
- Intervention effect Excess Mn negatively affected the absorption of Fe, Ca and Mg in the olive cultivars, depending on cultivar.
- Intervention effect Excess Mn negatively affected the absorption of P, Zn and B in the olive cultivars, depending on cultivar.
- Intervention effect In both cultivars, Mn use efficiency decreased significantly under excess Mn compared with control plants.
- Intervention effect In both cultivars, the use efficiencies of P, Ca and Fe increased significantly under excess Mn compared with control plants.
- Intervention effect Excess Mn significantly increased the photosynthetic rate only in Koroneiki.
- Intervention effect In Picual, photosynthetic rates were similar in both Mn treatments.
- Intervention effect Excess Mn did not affect the functional integrity of photosystem II in either cultivar, as measured by chlorophyll fluorescence parameters.
- Observation The authors conclude that the internal tolerance of Koroneiki tissues to excess Mn was higher than that of Picual.