Photomorphogenesis and Flowering

Vince‐Prue, Daphne

doi:10.1007/978-3-642-68918-5_18

Cited by 44 publications

(29 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The circadian clock is a ubiquitous feature among eukaryotes, which synchronizes many different aspects of life to the 24 h environmental cycle of light and darkness (for a review, see [7]). These activities range from gene transcription [32,9,48,39] to the physiological or behavioural comportment (for a review, see [46]). In Chlamydomonas, the clock is known to control phototactic responsiveness [3], and stickiness to glass [ 38 ].…”

Section: Li818 Is Under the Control Of A Circadian Oscillatormentioning

confidence: 99%

The early genetic response to light in the green unicellular alga Chlamydomonas eugametos grown under light/dark cycles involves genes that represent direct responses to light and photosynthesis

Gagné

Guertin

1992

Plant Mol Biol

View full text Add to dashboard Cite

In the green unicellular alga Chlamydomonas eugametos, cellular division is readily synchronized by light/dark cycles. Under these conditions, light initiates photosynthetic growth in daughter cells and begins the G1 phase. Genes whose expression is regulated upon illumination are likely to be important mechanisms controlling cell proliferation. To identify some of those genes, two cDNA libraries were prepared with poly(A)+ extracted from cells either stimulated with light for 1 h or held in darkness (quiescent cells) during the same period. To restrict our analysis to those genes that are part of the primary response, cells were incubated in presence of cycloheximide. Differential screening of approximately 40,000 clones in each library revealed 44 clones which hybridize preferentially with a [32P] cDNA probe derived from RNA of light-stimulated cells and 15 clones which react selectively with a [32P] cDNA probe synthesized from poly(A)+ RNA of quiescent cells. Cross-hybridization of these clones identified 4 independent sequences in the light-induced (LI) collection and 2 in the uninduced (LR) library. Four of these cDNAs correspond to mRNAs that are positively or negatively regulated upon activation of photosynthesis. One clone represents a mRNA that accumulates transitorily at both transitions. Finally, LI818 cDNA identifies a new chlorophyll a/b-binding (cab) gene family whose mRNA accumulation is controlled by light and a circadian oscillator. The endogenous timing system controls LI818 mRNA accumulation so that it precedes the onset of illumination by a few hours. On the other hand, light affects LI818 mRNA levels independently of active photosynthesis.

show abstract

Section: Li818 Is Under the Control Of A Circadian Oscillatormentioning

confidence: 99%

The early genetic response to light in the green unicellular alga Chlamydomonas eugametos grown under light/dark cycles involves genes that represent direct responses to light and photosynthesis

Gagné

Guertin

1992

Plant Mol Biol

View full text Add to dashboard Cite

show abstract

“…It is well established that diurnal and/or circadian rhythms are present in all eukaryotic organisms (Feldman 1982). In higher plants, several biochemical, morphological and physiological oscillations are the result of endogenous rhythms (Vince-Prue 1983 ;Jerebzoff 1986). Examples of the circadian rhythms in plants are the nyctinastic motion of leaves in Phaseolus and certain other legumes (Biinning 1956;Satter and Galston 1981) or the diurnal motions of the petals of Kalanchoe blossfeldiana (Bfinsow 1953).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of the diurnal/circadian expression of the chlorophyll a/b-binding proteins in leaves of tomato and other dicotyledonous and monocotyledonous plant species

Meyer

Thienel

Piechulla

1989

Planta

View full text Add to dashboard Cite

Diurnal oscillations of steady-state mRNA levels encoding the chlorophyll a/b-binding proteins were monitored inLycopersicon esculentum, Glycine max, Phaseolus vulgaris, P. aureus, P. coccineus, Pisum sativum, Sinapis alba, Hordeum vulgare, Triticum aestivum andZea mays. In these plant speciescab mRNA accumulation increases and decreases periodically indicating i) that the expression of the genes for chlorophyll a/b-binding proteins (cab genes) is controlled by a circadian rhythm, and ii) that the rhythm is widely distributed among monocotyledonous and dicotyledonous plant species. A detailed characterization of the pattern ofcab mRNA expression in tomato leaves shows that the amplitude of the oscillation is dependent on i) the developmental stage of the leaves, ii) the circadian phase and duration of light and iii) the circadian phase and duration of darkness. In addition to the chlorophyll a/b-binding proteins, genes coding for other cellular functions were examined for cyclic variations of their mRNA levels. The analysis includes genes involved in i) carbon metabolism (e.g. phosphoenolpyruvate carboxylase, pyruvate orthophosphate dikinase, alpha amylase, fructose-1,6-bisphosphate aldolase, triosephosphate isomerase), ii) photosynthesis (large and small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase, QB-binding protein, reaction-center protein of photosystem I) and iii) other physiological or morphological reactions (e.g. ubiquitin, actin). However, no periodic fluctuation pattern was detected for the mRNA levels of these genes in tomato and maize leaves.

show abstract

“…On the other hand, fl owering is also affected by the light quality mainly by the action of phytochromes (Vince-Prue, 1983;Fitter and Hay, 2002). In general, the spectral quality infl uences photomorphogenic responses such as germination and phototropism.…”

mentioning

confidence: 99%

Effect of Light Quality on Developmental Rate of Wheat under Continuous Light at a Constant Temperature

Kasajima

Inoue

Mahmud

et al. 2007

Plant Production Science

View full text Add to dashboard Cite

Photomorphogenesis and Flowering

Cited by 44 publications

References 103 publications

The early genetic response to light in the green unicellular alga Chlamydomonas eugametos grown under light/dark cycles involves genes that represent direct responses to light and photosynthesis

The early genetic response to light in the green unicellular alga Chlamydomonas eugametos grown under light/dark cycles involves genes that represent direct responses to light and photosynthesis

Molecular characterization of the diurnal/circadian expression of the chlorophyll a/b-binding proteins in leaves of tomato and other dicotyledonous and monocotyledonous plant species

Effect of Light Quality on Developmental Rate of Wheat under Continuous Light at a Constant Temperature

Contact Info

Product

Resources

About