Phy_reaction_rates: Phytochrome reaction rates

In photobiologyPlants: Plant Photobiology Related Functions and Data

Phytochrome reaction rates

Description

Rate constants k1 Pr -> Pfr; k2 Pfr -> Pr; photoconversion rate nu = k1 + k2 for Type I Phytochrome.

Usage

Phy_reaction_rates(
  w.length,
  s.irrad,
  unit.in = "energy",
  check.spectrum = TRUE,
  use.cached.mult = FALSE
)

Arguments

w.length	numeric array of wavelength (nm)
s.irrad	numeric array of spectral (energy) irradiances (W m-2 nm-1) or (mol s-1 m-2)
unit.in	character string with allowed values "energy", and "photon", or its alias "quantum"
check.spectrum	logical indicating whether to sanity check input data, default is TRUE
use.cached.mult	logical indicating whether multiplier values should be cached between calls

Value

a list of three numeric values giving the photoconversion rate (nu) and reaction rates (k1, k2).

References

Hayward, P. M. (1984) Determination of phytochrome parameters from radiation measurements. In Techniques in Photomorphogenesis, H. Smith and M. G. Holmes (eds). Academic Press, London, pp. 159-173. ISBN 0-12-652990-6.

Mancinelli, A.L. (1994) The physiology of phytochrome action. In Photomorphogenesis in plants, 2nd edition. R.E. Kendrick and G.H.M. Kronenberg, eds. Kluwer Academic Publishers, Dordrecht, pp. 211-269. ISBN 978-0-7923-2551-2 (print), 978-94-011-1884-2 (on-line). \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/978-94-011-1884-2_10")}

See Also

photon_ratio and energy_ratio

Examples

library(photobiology)
trimmed.sun.spct <- trim_wl(sun.spct, range = c(300, 770))
with(trimmed.sun.spct, Phy_reaction_rates(w.length, s.e.irrad))

photobiologyPlants documentation built on May 31, 2023, 6:08 p.m.