Influence de i’acide abscissique sur le transport d’ions inorganiques chez la pomme de terre (solanum tuberosum cv. Bintje). etude comparée avec quelques autres phytohormones

Suleiman, Sausan; Hourmant, Annick; Penot, Michel

doi:10.1007/bf02897554

Cited by 6 publications

(7 citation statements)

References 25 publications

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“…These findings confirm earlier data found by Mistrik et al (2000), who have shown that tumors of R. communis have no detectable nitrate reductase activity, because of high levels of ethylene that inhibit nitrate reductase activity. In addition, abscisic acid, known to inhibit NO ÿ 3 and PO ÿ 4 uptake (Suleiman et al, 1990), was, as in Ricinus tumors (Mistrik et al, 2000), ;10 times higher in Arabidopsis tumors compared with uninfected inflorescence stalks (data not shown). Thus, a conclusion would be that increased amino acid levels probably are not attributable to higher nitrate assimilation.…”

Section: Heterotrophic Metabolismmentioning

confidence: 91%

An Integrated View of Gene Expression and Solute Profiles of Arabidopsis Tumors: A Genome-Wide Approach

et al. 2006

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Transformation of plant cells with T-DNA of virulent agrobacteria is one of the most extreme triggers of developmental changes in higher plants. For rapid growth and development of resulting tumors, specific changes in the gene expression profile and metabolic adaptations are required. Increased transport and metabolic fluxes are critical preconditions for growth and tumor development. A functional genomics approach, using the Affymetrix whole genome microarray (∼22,800 genes), was applied to measure changes in gene expression. The solute pattern of Arabidopsis thaliana tumors and uninfected plant tissues was compared with the respective gene expression profile. Increased levels of anions, sugars, and amino acids were correlated with changes in the gene expression of specific enzymes and solute transporters. The expression profile of genes pivotal for energy metabolism, such as those involved in photosynthesis, mitochondrial electron transport, and fermentation, suggested that tumors produce C and N compounds heterotrophically and gain energy mainly anaerobically. Thus, understanding of gene-to-metabolite networks in plant tumors promotes the identification of mechanisms that control tumor development.

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Section: Heterotrophic Metabolismmentioning

confidence: 91%

An Integrated View of Gene Expression and Solute Profiles of Arabidopsis Tumors: A Genome-Wide Approach

et al. 2006

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“…The role of ABA in horm0ne-directed transport is not yet sufficiently explored; this hormone can have a positive (Karmoker and van Steveninck 1979, Schiissler et al 1984, Clifford et al 1986) negative (Porter 1981) or null effect (King and Patrick 1982). In a previous work, we have shown that ABA induces an oriented transport of ions to the treated zone of isolated potato leaves (Suleiman et al 1990). The present results demonstrate that ABA increases K § uptake by leaf tissue.…”

Section: Discussionmentioning

confidence: 88%

“…On the other hand, we have demonstrated with isolated leaves of potato plant that ABA increases the transport and accumulation of various ions towards the ABAtreated leaflet (Suleiman et al 1990).…”

mentioning

confidence: 85%

“…Incubation with hormone (10 -+ M) was always performed for 24 h in the dark at 24 ~ Then, the discs were washed and used for absorption experiments. In recent work (Suleiman et al 1990), we have shown that this technique can be used to study the effect of hormones in long distance transport because the absorption of K § by leaf discs does not involve any wounding effect. Uptake S6Rb (IRE, Fleurus, Belgium) was used as a marker of K + ; 2.77 1011 Bq 1-1 were added to a 1 mM MES solution (pH 6.0) containing 1 mM KCI.…”

Section: Plant Materialsmentioning

confidence: 99%

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Influence of Abscisic acid on K<sup>+</sup> absorption by leaf discs ofSolanum tuberosum

Suleiman¹,

Hourmant²,

Penot³

1991

Biologia plant.

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It is shown that, contrary to what is generally found, treatment with abscisic acid (ABA) of potato leaf tissues resulted in an increase of K § uptake. Comparison with other hormones was made: BAP induced an inhibition and GA~ a stimulation of K + uptake. The uptake was sensitive to several metabolic inhibitors, external pH and ATPase inhibitors while p-chloromercuribenzenesulfonic acid (PCMBS) had no effect. Uptake kinetics revealed the presence of both saturable and linear components which were both stimulated by ABA treatment. Our data are consistent with an effect of ABA on the active and passive components of K + uptake. These results are discussed in relation to the action of ABA on foliar senescence and the action on ion partitioning in the whole plant.

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“…Depuis peu, un rtle particulier est accord6 fi rABA dans le contrtle des flux de glucides. Nous mtmes, avons montrt, chez la pomme de terre, la dtpendance des flux ioniques vis-fivis de I'ABA: un traitement hormonal au niveau foliaire accro]t le transfert vers une zone trait6e (Suleiman et al 1990) ou vers le jeune tubercule en croissance (Poder et al 1988).…”

Section: Introductionunclassified

Absorption of sucrose by tissues of adult tubers of potato(Solatium tuberosum L.). modalities and influence of phytohormones

Penot¹,

Hourmant²,

Reddahi³

1993

Biologia plant.

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Influence de i’acide abscissique sur le transport d’ions inorganiques chez la pomme de terre (solanum tuberosum cv. Bintje). etude comparée avec quelques autres phytohormones

Cited by 6 publications

References 25 publications

An Integrated View of Gene Expression and Solute Profiles of Arabidopsis Tumors: A Genome-Wide Approach

An Integrated View of Gene Expression and Solute Profiles of Arabidopsis Tumors: A Genome-Wide Approach

Influence of Abscisic acid on K<sup>+</sup> absorption by leaf discs ofSolanum tuberosum

Absorption of sucrose by tissues of adult tubers of potato(Solatium tuberosum L.). modalities and influence of phytohormones

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