Distribution, métabolisme et rôle du sorbitol chez les plantes supérieures. Synthèse

Gutiérrez, Anabella; Gaudillère, J.P.

doi:10.1051/agro:19960502

Cited by 24 publications

(10 citation statements)

References 47 publications

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“…A sugar concentration of 0·17 in the phloem has been reported for various plant materials (Ruan & Patrick 1995; van Bel 1993), and a value of 0·14 has been measured in peach seedlings 3 h before the end of the day (Escobar‐Gutierrez 1995). Diurnal fluctuations of the sugar concentration have been observed in the phloem of Salix sp.…”

Section: Model Developmentmentioning

confidence: 99%

A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

Fishman

Génard²

1998

Plant Cell & Environment

171

158

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Section: Model Developmentmentioning

confidence: 99%

A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

Fishman

Génard²

1998

Plant Cell & Environment

171

158

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“…[25], Hedera helix (L.) [26], and members of the Oleaceae family [27,28]. Furthermore, polyols have several functions other than osmotic adjustment, such as translocation and storage of carbon, cryoprotection, prevention of activated oxygen species, boron transport, and energy delivery [29,30].…”

Section: Introductionmentioning

confidence: 99%

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Gugliuzza

Talluto

Martinelli

et al. 2020

Plants

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Water scarcity in the Mediterranean area is very common and understanding responses to drought is important for loquat management and production. The objective of this study was to evaluate the effect of drought on the growth and metabolism of loquat. Ninety two-year-old plants of ‘Marchetto’ loquat grafted on quince were grown in the greenhouse in 12-liter pots and three irrigation regimes were imposed starting on 11 May and lasting until 27 July, 2013. One-third of the plants was irrigated with 100% of the water consumed (well watered, WW), a second group of plants was irrigated with 66% of the water supplied to the WW plants (mild drought, MD), and a third group was irrigated with 33% of the water supplied to the WW plants (severe drought, SD). Minimum water potential levels of −2.0 MPa were recorded in SD plants at the end of May. Photosynthetic rates were reduced according to water supply (WW > MD > SD), especially during the morning hours. By the end of the trial, severe drought reduced all growth parameters and particularly leaf growth. Drought induced early accumulation of sorbitol in leaves, whereas other carbohydrates were not affected. Of over 100 leaf metabolites investigated, 9 (squalene, pelargonic acid, glucose-1-phosphate, palatinol, capric acid, aconitic acid, xylitol, lauric acid, and alanine) were found to be useful to discriminate between the three irrigation groups, suggesting their involvement in loquat metabolism under drought conditions. Loquat behaved as a moderately drought-tolerant species (limited stem water potential and growth reductions) and the accumulation of sorbitol in favor of sucrose in mildly-stressed plants may be considered an early protective mechanism against leaf dehydration and a potential biochemical marker for precise irrigation management.

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“…(Gorham et al 1981; Briens and Larher 1983), Hedera helix L. (Moore et al 1997), and members of the Oleaceae family (Gucci et al 1997; Guicherd et al 1997; Peltier et al 1997). It is important to note that several functions of polyols other than osmotic adjustment, such as translocation and storage of carbon, cryoprotection, prevention of activated oxygen species, boron transport, and energy delivery, have been proposed (Brown and Hu 1996; Escobar‐Gutiérrez and Gaudillère 1996).…”

Section: Introductionmentioning

confidence: 99%

Effect of drought on sorbitol and sucrose metabolism in sinks and sources of peach

Bianco

Rieger

Sung

2000

Physiologia Plantarum

119

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In peach (Prunus persica [L.] Batsch.), sorbitol and sucrose plants in proportion to water supply. Osmotic adjustment was are the two main forms of photosynthetic and translocated detected by the second week of treatment in mature leaves and by the third week in shoot tips. Both SDH and S6PDH carbon and may have different functions depending on the activities were reduced by drought stress within 4 days of organ of utilization and its developmental stage. The role and treatment and positively correlated with overall c w levels. interaction of sorbitol and sucrose metabolism was studied in However, only SDH activity was correlated with c s . Among mature leaves (source) and shoot tips (sinks) of 'Nemaguard' the sucrose enzymes, only SS was affected by drought, being peach under drought stress. Plants were irrigated daily at reduced after 3 weeks. Sorbitol accumulation in both mature rates of 100, 67, and 33% of evapotranspiration (ET). The relative elongation rate (RER) of growing shoots was mea-leaves and shoot tips of stressed plants was observed starting sured daily. In mature leaves, water potential (c w ), osmotic from the second week of treatment and reached up to 80% of total solutes involved in osmotic adjustment. Sucrose content potential (c s ), sorbitol-6-phosphate dehydrogenase (S6PDH, was up to 8-fold lower than sorbitol content and accumulated EC 1. 1.1.200), and sucrose-phosphate synthase (SPS, EC only occasionally. We conclude that a loss of SDH activity in 2.4.

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Distribution, métabolisme et rôle du sorbitol chez les plantes supérieures. Synthèse

Abstract: Résumé — Le sorbitol est l'un des 17 alditols trouvés chez les plantes supérieures. Il

Cited by 24 publications

References 47 publications

A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Effect of drought on sorbitol and sucrose metabolism in sinks and sources of peach

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