Effects of radiation on growth and development

Borthwick, H. A.; Hendricks, S. B.; Lockhart, James A.; Mohr, Hans; Franzgrote, Ursula Brodführer; Gunckel, James E.; Sparrow, A.H.; Reinert, J.

doi:10.1007/978-3-662-11209-0_2

Cited by 7 publications

(4 citation statements)

References 964 publications

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“…The principal photoreceptor in plants, phytochrome, was isolated (Butler et al 1959) following its anticipation from action spectra for several developmental processes of plants, which closely resembled the absorbance spectra of the extracted pigment (Borthwick and Hendricks 1961). However, numerous data reported for the photocontrol of plant growth and development could not be explained in terms of phytochrome absorbance spectra alone.…”

Section: Introductionmentioning

confidence: 98%

“…First, the same light treatment was found to affect the same photoresponse in different plants in the opposite way, such as flowering in various photoperiodic groups (Borthwick and Hendricks 1961). Also, two photoperiodic responses from a single plant can be affected by the same light treatment in opposite directions, for instance, flowering and tuberization (Vince‐Prue 1975).…”

Section: Introductionmentioning

confidence: 99%

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A computer simulation of aggregated phytochrome photoconversion

Ninkovic¹,

Obrenović²

2000

Physiologia Plantarum

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In order to check the relevance of possible phytochrome aggregation forms for the diversity of action spectra and dose‐response curves for light sensing by plants, a model for phytochrome photoconversion was produced for different aggregates. Under saturating light treatments, a computer simulation of dimer and aggregated dimer (tetramers and hexamers) photoconversion provided similar compositions of various aggregates in red and green light, which differed from blue and far‐red light. These aggregates could account for the variable action spectra only if the nature of the primary transducing components is taken into account. The initial kinetics of aggregated phytochrome appear to be slower in comparison to the monomeric form, and there were transient peaks of certain aggregates in red and green light. A single peak occurred under blue light, but not in far‐red, only if dimers are aggregated into tetramers and hexamers. This finding suggests that the initial kinetics of aggregated phytochrome are not sufficient to account for the variable dose‐response curves in light‐mediated responses by plants, so again the feature of signal transduction components may play a decisive role.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

A computer simulation of aggregated phytochrome photoconversion

Ninkovic¹,

Obrenović²

2000

Physiologia Plantarum

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“…The role of phytoehrome in stem growth is well established, both in young etiolated plants (Went,1941;Parker et al, 1949;Borthwick & Hendricks, 1961;Went & Sheps, 1969;Fredericq & de Greef, 1972) and in green plants, grown under photoperiodic conditions. In these plants, stem elongation is governed by the level of Pfr at the beginning of the dark period (Downs, Hendricks & Borthwick, 1957;Kasperbauer, 1971;Lecharny & Jacques, 1974).…”

Section: Introductionmentioning

confidence: 99%

Two phytochrome‐dependent processes in Anagallis arvensis L.: flowering and stem elongation

Imhoff

Lecharny²,

Jacques³

et al. 1979

Plant Cell & Environment

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Two phytochrome‐dependent processes are compared in Anagallis arvensis, an absolute long‐day plant: flowering and internode elongation. The effectiveness of red or far red radiation is different according to the length of the treatment and its position within the photoperiodic cycle: for both flowering and internode elongation, 15 h treatments with wavelengths above 700 nm are promotive, whilst wavelengths below 700 nm are inhibitory. In contrast, night breaks of 3 h red light (λ < 700 nm), given after the middle of the dark period, are promotive for flowering and inhibitory for internode elongation. These results are discussed in context with data reported in the literature on photoperiodic control of long‐day plants.

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“…Des filtres "athermic" (Saint-Gobain), placb entre la source lumineuse et les filtres interfkrentiels, permettent d'tliminer l'infra-rouge ( Fig. 1 b) (1)…”

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ETUDE DES FACTEURS DETERMINANT LA GERMINATION DES GRAINES DE LYTHRUM SALICARIA (LYTHRACEES)

Rollin¹,

Bidault²

1963

Photochem & Photobiology

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Abstract— Les résultats des expériences réalisées sous différentes conditions d'éclairement et de température ont permis de définer deux processus de germination probablement indépen‐dants: 1°/un processus thermosensible: à l'obscurité la germination ne se produit qu'en alternance de température. L'éfficacité de ces alternances est fonction de l'éart qui existe entre les deux températures et de la valeur de ces deux températures. L'influence des alternances de températures peut être exaItée par un certain nombre de substances: nitrates, nitrites, hydroxylamine et thiourée 2°/un processus photosensible: la lumière rouge clair (630–680 mµ) stimule le germination, par contre la lumière rouge sombre (700–730 mµ) élimine la stimulation due à la lumière rouge clair. L'acide gibbéréllique sensibilise les graines à la lumière rouge clair.

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Effects of radiation on growth and development

Cited by 7 publications

References 964 publications

A computer simulation of aggregated phytochrome photoconversion

A computer simulation of aggregated phytochrome photoconversion

Two phytochrome‐dependent processes in Anagallis arvensis L.: flowering and stem elongation

ETUDE DES FACTEURS DETERMINANT LA GERMINATION DES GRAINES DE LYTHRUM SALICARIA (LYTHRACEES)

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