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Table 2 List of parameters

From: Modelling wood formation and structure: power and limits of a morphogenetic gradient in controlling xylem cell proliferation and growth

Symbol

Value

Unit

Description

N 0

10

Unitless

Initial number of cells in the file

L init

6

μm

Initial size of the cells

T d

1

Unitless

Division threshold

T e

0.7

Unitless

Enlargement threshold

k g

0.06

s−1

Prefactor relating signal concentration to cell growth rate

μ (DIF)

5 10−3

s−1

Decay rate (for a diffusive signal)

μ (PAT)

1 10−6

s−1

Decay rate (for a polarly transported signal) (Grieneisen et al. 2012)

D

200

μm2 s−1

Diffusion coefficient (for a diffusive signal)

q

1.25

μm s−1

Permeability rate of the membranes (for a polarly transported signal)

p

7 10−2

μm s−1

Increase of the effective permeability rate of the membranes due to the carriers (for a polarly transported signal)

  1. The value associated with each parameter is its default value, if not specified otherwise