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Understanding the effect of carbon status on stem diameter variations

(2013) ANNALS OF BOTANY. 111(1). p.31-46
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Abstract
Carbon assimilation and leaf-to-fruit sugar transport are, along with plant water status, the driving mechanisms for fruit growth. An integrated comprehension of the plant water and carbon relationships is therefore essential to better understand water and dry matter accumulation. Variations in stem diameter result from an integrated response to plant water and carbon status and are as such a valuable source of information. A mechanistic water flow and storage model was used to relate variations in stem diameter to phloem sugar loading and sugar concentration dynamics in tomato. The simulation results were compared with an independent model, simulating phloem sucrose loading at the leaf level based on photosynthesis and sugar metabolism kinetics and enabled a mechanistic interpretation of the oone common assimilate pool' concept for tomato. Combining stem diameter variation measurements and mechanistic modelling allowed us to distinguish instantaneous dynamics in the plant water relations and gradual variations in plant carbon status. Additionally, the model combined with stem diameter measurements enabled prediction of dynamic variables which are difficult to measure in a continuous and non-destructive way, such as xylem water potential and phloem hydrostatic potential. Finally, dynamics in phloem sugar loading and sugar concentration were distilled from stem diameter variations. Stem diameter variations, when used in mechanistic models, have great potential to continuously monitor and interpret plant water and carbon relations under natural growing conditions.
Keywords
Tomato, plantwater relations, mechanistic model, carbon translocation, fruit growth, turgor, Solanum lycopersicum, DAILY TRUNK SHRINKAGE, FRUIT-GROWTH, TOMATO LEAVES, MATTER PRODUCTION, SAP FLOW, SUGAR-TRANSPORT, TRANSPORT MODEL, PLANT, WATER, PHLOEM

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Chicago
De Swaef, Tom, Steven Driever, Lieven Van Meulebroek, Lynn Vanhaecke, Leo FM Marcelis, and Kathy Steppe. 2013. “Understanding the Effect of Carbon Status on Stem Diameter Variations.” Annals of Botany 111 (1): 31–46.
APA
De Swaef, T., Driever, S., Van Meulebroek, L., Vanhaecke, L., Marcelis, L. F., & Steppe, K. (2013). Understanding the effect of carbon status on stem diameter variations. ANNALS OF BOTANY, 111(1), 31–46.
Vancouver
1.
De Swaef T, Driever S, Van Meulebroek L, Vanhaecke L, Marcelis LF, Steppe K. Understanding the effect of carbon status on stem diameter variations. ANNALS OF BOTANY. 2013;111(1):31–46.
MLA
De Swaef, Tom, Steven Driever, Lieven Van Meulebroek, et al. “Understanding the Effect of Carbon Status on Stem Diameter Variations.” ANNALS OF BOTANY 111.1 (2013): 31–46. Print.
@article{3063869,
  abstract     = {Carbon assimilation and leaf-to-fruit sugar transport are, along with plant water status, the driving mechanisms for fruit growth. An integrated comprehension of the plant water and carbon relationships is therefore essential to better understand water and dry matter accumulation. Variations in stem diameter result from an integrated response to plant water and carbon status and are as such a valuable source of information. 
A mechanistic water flow and storage model was used to relate variations in stem diameter to phloem sugar loading and sugar concentration dynamics in tomato. The simulation results were compared with an independent model, simulating phloem sucrose loading at the leaf level based on photosynthesis and sugar metabolism kinetics and enabled a mechanistic interpretation of the oone common assimilate pool' concept for tomato. 
Combining stem diameter variation measurements and mechanistic modelling allowed us to distinguish instantaneous dynamics in the plant water relations and gradual variations in plant carbon status. Additionally, the model combined with stem diameter measurements enabled prediction of dynamic variables which are difficult to measure in a continuous and non-destructive way, such as xylem water potential and phloem hydrostatic potential. Finally, dynamics in phloem sugar loading and sugar concentration were distilled from stem diameter variations. 
Stem diameter variations, when used in mechanistic models, have great potential to continuously monitor and interpret plant water and carbon relations under natural growing conditions.},
  author       = {De Swaef, Tom and Driever, Steven and Van Meulebroek, Lieven and Vanhaecke, Lynn and Marcelis, Leo FM and Steppe, Kathy},
  issn         = {0305-7364},
  journal      = {ANNALS OF BOTANY},
  language     = {eng},
  number       = {1},
  pages        = {31--46},
  title        = {Understanding the effect of carbon status on stem diameter variations},
  url          = {http://dx.doi.org/10.1093/aob/mcs233},
  volume       = {111},
  year         = {2013},
}

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