Effect of delayed fruit harvest on photosynthesis, transpiration and nutrient remobilization of apple leaves

@article{Tartachnyk2004EffectOD,
  title={Effect of delayed fruit harvest on photosynthesis, transpiration and nutrient remobilization of apple leaves},
  author={Iryna Tartachnyk and Michael M. Blanke},
  journal={New Phytologist},
  year={2004},
  volume={164},
  pages={441-450}
}
Summary • The aim of the work was to compare autumnal photosynthesis and remobilization processes in apple (Malus domestica) trees harvested either at commercial harvest date or 6 wk later (delayed harvest). • Apple leaf photosynthesis, measured by porometry, remained large at 8–14 µmol CO2 m−2 s−1 and was not limited by stomatal function after the commercial harvest date. The autumnal reduction both in photosynthesis and in vivo RUBISCO activity was less pronounced in apple trees with a… Expand
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  • Biology, Medicine
  • Functional plant biology : FPB
  • 2018
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References

SHOWING 1-10 OF 18 REFERENCES
Effects of defruiting on source‐sink relationship, carbon budget, leaf carbohydrate content and water use efficiency of apple trees
TLDR
The excessive respiratory losses after fruit removal in October, when the tree lost more carbon than it assimilated, may have been induced by translocation of carbohydrates from the leaves to the perennial woody parts of the tree and by the onset of leaf senescence. Expand
Gas exchange parameters, water relations and carbohydrate partitioning in leaves of field-grown Prunus domestica following fruit removal
TLDR
The effect of fruit removal on gas exchange, water relations, chlorophyll and non-structural carbohydrate content of leaves from mature, field-grown plum trees, and the decrease of CO2 assimilation rate is discussed in relation to the hypothesis of assimilate demand regulating photosynthesis through a feedback mechanism. Expand
Profiles of leaf senescence during reproductive growth of sunflower and maize
TLDR
Lack of interaction between reproductive treatment and leaf position indicates that the senescence signal, whatever its nature, was equally effective throughout the plant in both species. Expand
Sink removal and leaf senescence in soybean : cultivar effects.
TLDR
Even though cultivars differed in rate of decay of photosynthetic rate and Rubisco level in response to sink removal, the initiation of leaf senescence was not influenced by presence or absence of developing fruits. Expand
Differential Senescence of Maize Hybrids following Ear Removal : II. Selected Leaf.
TLDR
It is deduced that the rate of flux of N into the leaf was a factor in regulating the differing rates of senescence observed for the six treatments; however, it cannot rule out the possibility of concurrent influence of growth regulators or other metabolites. Expand
Qualitative and quantitative changes in nitrogenous compounds in senescing leaf and bark tissues of the apple
TLDR
Fractionation of the total bark proteins by DEAE-cellulose chromatography indicated that the final upsurge of bark proteins observed in November was associated primarily with one group of proteins (Peak III). Expand
Biochemical and Enzymatic Changes in Apple Leaf Tissue during Autumnal Senescence.
TLDR
The biochemical changes occurring during the natural senescence of apple leaf tissue coincided with specific changes in the environment and RNase, polyphenol oxidase, and proteolytic activity reached their highest specific activities after the first frost. Expand
Photosynthesis and nitrogen relationships in leaves of C3 plants
TLDR
Surviving in certain environments clearly does not require maximising photosynthetic capacity for a given leaf nitrogen content, as variation reflects different strategies of nitrogen partitioning, the electron transport capacity per unit of chlorophyll and the specific activity of RuBP carboxylase. Expand
Regulation of Leaf Senescence by Cytokinin, Sugars, and Light: Effects on NADH-Dependent Hydroxypyruvate Reductase
TLDR
It is concluded that sugars, cytokinin, and light interact during senescence by influencing the decline in proteins involved in photosynthetic metabolism. Expand
Diurnal CO2 fluctuations in an apple orchard
TLDR
Diurnal CO 2 fluctuations were recorded in an apple orchard at Bonn, Germany during the vegetation period in 1992 and the large CO 2 concentrations were attributed to lack of wind or turbulence and considerable dark respiration of the apple trees and grass and soil as dependent on night temperature. Expand
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