Protochlorophyllide and POR development in dark-grown plants with different proportions of short-wave length and long-wavelength protochlorophyllide spectral forms

Amirjani, M. R. (författare)

Sundqvist, Krystyna, 1946 (författare): Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences

Sundqvist, Christer, 1943 (författare): Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences

(creator_code:org_t)

Wiley, 2006
2006
Engelska.
Ingår i: Physiologia Plantarum. - : Wiley. - 0031-9317 .- 1399-3054. ; 128:4, s. 751-762

Relaterad länk:: https://gup.ub.gu.se...; visa fler...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

The effect of leaf developmental age on the protochlorophyllide (Pchlide) spectral forms and the expression of messenger RNA (mRNA) encoding NADPH-protochlorophyllide oxidoreductase (POR) were investigated. Four plant species, maize, wheat, pea and the lip 1 mutant of pea, known to have different composition of the spectral forms of Pchlide, were used. In very young plants short-wavelength Pchlide with a fluorescence emission at 631 nm was dominating. Long-wavelength Pchlide fluorescing mainly around 655 nm increased during development, which led to a relative decrease of the short-wavelength forms. During ageing of the leaves, the short-wavelength forms slightly increased again. The different proportions of short- and long-wavelength Pchlide spectral forms were, however, found to vary with the developmental stage in a species specific pattern. The steady-state level of POR mRNA and the amount of the POR protein were similar in species dominated by short-wavelength forms and in species dominated with long-wavelength forms. Even if POR is necessary for the formation of the long-wavelength Pchlide form it is not the only limiting factor for formation of long-wavelength Pchlide forms in mature plants.

NATURVETENSKAP -- Biologi -- Annan biologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Other Biological Topics (hsv//eng)

Av författaren/redakt...: Amirjani, M. R.; Sundqvist, Kryst ...; Sundqvist, Chris ...

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