Carry-over of thigmomorphogenetic characteristics in calli derived fromBryonia dioica internodes

Bourgeade, Pascale; Boyer, Nicole; Jaegher, G. De; Gaspar, Thomas

doi:10.1007/bf00043347

Cited by 17 publications

(8 citation statements)

References 34 publications

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“…As already reported (Boyer et al, 1979, Bourgeade et al 1989), rubbing plants cultured on a nutrient solution induced an increase in peroxidase activity of about 28% within 24 h (Fig. 3).…”

Section: Peroxidase Activitysupporting

confidence: 87%

Effect of anti-DNA methylation drugs on growth, level of methylated DNA, peroxidase activity and ethylene production of Bryonia dioica internodes

Galaud¹,

Gaspar²,

Boyer³

1993

Physiol Plant

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1993. Effect of anti-DNA methylation drugs on growth, level of methylated DNA, peroxidase activity and ethylene production of Bryonia dioica intemodes. -Physiol. Plant. 87: 528-534.A previous paper (Galaud et al. 1993. Physiol. Plant. 87: 25-30) reported a rapid demethylation of DNA after mechanical rubbing of young Bryonia dioica intemodes, leading to growth inhibition. In order to assess an eventual causative role of DNA demethylation in the mechanisms underlying thigmomorphogenesis, the effects of the anti-DNA methyiation drugs, 5-azacytosine (5-azacyt) and 5-azacytidine (5-azacydj were investigated. Treatment with 5-azacyd induced a decrease of the methylated DNA level. This was accompanied by an increase of peroxidase activity and of ethylene production. On the contrary, 5-azacyt had no significant effect on growth, peroxidase activity and ethylene prdduction. The use of 5-azacyd as an inducer of DNA demethylation is discussed in relation to the control of gene expression.

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“…As already reported (Boyer et al, 1979, Bourgeade et al 1989), rubbing plants cultured on a nutrient solution induced an increase in peroxidase activity of about 28% within 24 h (Fig. 3).…”

Section: Peroxidase Activitysupporting

confidence: 87%

Effect of anti-DNA methylation drugs on growth, level of methylated DNA, peroxidase activity and ethylene production of Bryonia dioica internodes

Galaud¹,

Gaspar²,

Boyer³

1993

Physiol Plant

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“…In STO/RCL4 (Boyer et al 1979;Bourgeade et al 1989), tissue cultures of calli were derived from stimulated bryony (Bryonia dioica Jacq.) internodes.…”

Section: Examples Of the Sto/rcl Form Of Plant Memorymentioning

confidence: 99%

Plant memory: a tentative model

Thellier¹,

Lüttge

2012

Plant Biology

109

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All memory functions have molecular bases, namely in signal reception and transduction, and in storage and recall of information. Thus, at all levels of organisation living organisms have some kind of memory. In plants one may distinguish two types. There are linear pathways from reception of signals and propagation of effectors to a type of memory that may be described by terms such as learning, habituation or priming. There is a storage and recall memory based on a complex network of elements with a high degree of integration and feedback. The most important elements envisaged are calcium waves, epigenetic modifications of DNA and histones, and regulation of timing via a biological clock. Experiments are described that document the occurrence of the two sorts of memory and which show how they can be distinguished. A schematic model of plant memory is derived as emergent from integration of the various modules. Possessing the two forms of memory supports the fitness of plants in response to environmental stimuli and stress.

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“…Ils ont montr6, outre un aspect morphologique different, un maintien du "caract~re irrit6" pendant plusieurs semaines, caract6ris6 par des modifications biochimiques, h savoir: augmentation de l'activit6 peroxydasique globale et des isoperoxydases, augmentation de la teneur en ACC et de la capacit6 de production d'6thyl~ne, augmentation de la PAL et teneur 61ev6e en lignine (Bourgeade et al, 1989a). I1 a fallu d'autres moyens techniques pour le mettre en 6vidence.…”

Section: Stockage De L'informationunclassified

Reponses a des signaux mecaniques: Communications inter et intracellulaires chez les vegetaux

Desbiez¹,

Boissay²,

Bonnin³

et al. 1991

Acta Biotheor

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In their environment, plants are continuously submitted to natural stimuli such as wind, rain, temperature changes, wounding, etc. These signals induce a cascade of events which lead to metabolic and morphogenetic responses.In this paper the different steps are described and discussed starting from the reception of the signal by a plant organ to the final morphogenetic response. In our laboratory two plants are studied: Bryonia dioica for which rubbing the internode results in reduced elongation and enhanced radial expansion and Bidens pilosa for which the response occurs at distance, hence pricking the cotyledon of a plantlet induces the growth inhibition of both the hypocotyl (Desbiez et al., 1981) and the axillary bud of the pricked cotyledon (Desbiez, 1973).Reception of the signal and transmission of the message. In Bryonia the signal is received by epidermal cells while in Bidens they are the cells adjacent to the midrib of the cotyledon which receive the mechanical signal. In both plants the message is transmitted via a wave of electric depolarization (De Jaegher & Boyer, 1989;Desbiez, 1973;Frachisse et al., 1985b). This latter is composed of an action potential associated with a slow wave whose transmission rates are respectively lcm s -t and 1 mm s t . Recent results have shown the involvement of Ca: ÷ in the triggering of the slow wave and the role of the H ÷ pump during the slow wave.Transient and fast biochemical responses. An entry of extraceUular Ca 2÷ into the cells and a transient increase in 1P ~ occur within seconds following the mechanical stimulus. At the same time, the membrane becomes more fluid, correlated with qualitative changes in phospholipids. The rapid increase in the concentration of peroxidated lipids may be correlated with ethylene biosynthesis which is stimulated at~er rubbing (Crouzillat et al., 1985;De Jaegher et aL, 1987a).Other parameters such as cytoplasmic pH, relative water content, hydric potential, membrane potential and modifications of K ÷, Mg:+-ATPase and Ca:*-ATPase activities, play a key role in the early responses induced by the traumatisms.Irreversible-biochemical responses. The mechanical stimulus performed on a Bryonia internode induces an acceleration of: i) enzymatic activities related to the lignification (PAL and cell wall

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Carry-over of thigmomorphogenetic characteristics in calli derived fromBryonia dioica internodes

Cited by 17 publications

References 34 publications

Effect of anti-DNA methylation drugs on growth, level of methylated DNA, peroxidase activity and ethylene production of Bryonia dioica internodes

Effect of anti-DNA methylation drugs on growth, level of methylated DNA, peroxidase activity and ethylene production of Bryonia dioica internodes

Plant memory: a tentative model

Reponses a des signaux mecaniques: Communications inter et intracellulaires chez les vegetaux

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