Impact of high temperature on sucrose translocation, sugar content and inulin yield in Cichorium intybus L. var. sativum

Mathieu, Anne-Sophie; Tinel, Charlotte; Dailly, Hélène; Quinet, Muriel; Lutts, Stanley

doi:10.1007/s11104-018-3802-7

Cited by 16 publications

(12 citation statements)

References 35 publications

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“…The average value was 5.33% f.w. This result was lower than those found in the crops specifically devoted to fructan production: 11-14% for Jerusalem artichoke [30], 15-20% for chicory [31], and higher than 37% for agave (Agave tequilana Weber var. Azul) [32].…”

Section: Contents In Neutral Sugars and Fructanscontrasting

confidence: 60%

Asparagus Roots: From an Agricultural By-Product to a Valuable Source of Fructans

Viera

Hamdi

Guillén

et al. 2022

Foods

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Asparagus roots are by-products from asparagus cultivation and they could be considered one of the best sources of fructans. These polymers are interesting food ingredients for their prebiotic and immuno-stimulating characteristics. The aim of this work is to characterize the fructan profile from the roots of several asparagus varieties grown at different locations and pickled at three vegetative statuses in order to valorize these by-products as fructan source. Fructans were extracted with hot water and fractionated into three pools according to their molecular weight (MW). Their average MW was studied by HPSEC and their degree of polymerization by HPAEC. The fructan content was up to 12.5% on fresh weight basis, depending on variety and sampling date. The relative abundance of the three pools also depended on the picking moment as after the spear harvest period their total content and MW increased. The average MW of the three fractions was similar among varieties with 4.8, 8.4 and 9 sugar units, although fructans up to 30 units were identified by HPAEC. These characteristics make them similar to the commercialized Orafti®-GR inulin, a common additive to food products. Therefore, the concept of asparagus roots as cultivation waste must be changed to a new feedstock for sustainable agriculture and industry.

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Section: Contents In Neutral Sugars and Fructanscontrasting

confidence: 60%

Asparagus Roots: From an Agricultural By-Product to a Valuable Source of Fructans

Viera

Hamdi

Guillén

et al. 2022

Foods

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“…Flowering time was delayed in HS. Wallace et al [ 43 ] reported delayed flowering in HS in bean but associated with photoperiod sensitivity in genotypes, whereas early flowering and maturity was reported as a result of HS in groundnut [ 44 ], in Cichorium intybus [ 45 ] or in lentil [ 46 ]. While this observation may be influenced by the location, we showed that in heat stress delay in flowering is correlated with yield reduction, hence, these effects appear to be linked.…”

Section: Discussionmentioning

confidence: 99%

Physiological and genetic characterization of heat stress effects in a common bean RIL population

et al. 2021

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Heat stress is a major abiotic stress factor reducing crop productivity and climate change models predict increasing temperatures in many production regions. Common bean (Phaseolus vulgaris L.) is an important crop for food security in the tropics and heat stress is expected to cause increasing yield losses. To study physiological responses and to characterize the genetics of heat stress tolerance, we evaluated the recombinant inbred line (RIL) population IJR (Indeterminate Jamaica Red) x AFR298 of the Andean gene pool. Heat stress (HS) conditions in the field affected many traits across the reproductive phase. High nighttime temperatures appeared to have larger effects than maximum daytime temperatures. Yield was reduced compared to non-stress conditions by 37% and 26% in 2016 and 2017 seasons, respectively. The image analysis tool HYRBEAN was developed to evaluate pollen viability (PolVia). A significant reduction of PolVia was observed in HS and higher viability was correlated with yield only under stress conditions. In susceptible lines the reproductive phase was extended and defects in the initiation of seed, seed fill and seed formation were identified reducing grain quality. Higher yields under HS were correlated with early flowering, high pollen viability and effective seed filling. Quantitative trait loci (QTL) analysis revealed a QTL for both pod harvest index and PolVia on chromosome Pv05, for which the more heat tolerant parent IJR contributed the positive allele. Also, on chromosome Pv08 a QTL from IJR improved PolVia and the yield component pods per plant. HS affected several traits during the whole reproductive development, from floral induction to grain quality traits, indicating a general heat perception affecting many reproductive processes. Identification of tolerant germplasm, indicator traits for heat tolerance and molecular tools will help to breed heat tolerant varieties to face future climate change effects.

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“…Considering the maintenance of photosynthetic activity, we postulate that the mild dehydration treatment may not have affected the sugar metabolism of B. ceiba. Nevertheless, heat stress can induce the reprogramming of carbohydrate metabolism [46]. The accumulation of soluble sugars under heat stress was also found in Nouelia insignis [47].…”

Section: Discussionmentioning

confidence: 93%

“…As the photosynthetic activity of B. ceiba decreased severely after H treatment, the enhanced de novo synthesis was unlikely to be a reason for the substantial increase of the soluble sugars. This was probably due to the inhibition of the conversion of sugars into starch and/or the reduced translocation from leaves to the roots [46,48]. The accumulated soluble sugars might help to defend against high temperature stress serving as antioxidants, osmoprotectants, and signaling molecules [42,49].…”

Section: Discussionmentioning

confidence: 99%

Effects of repeated drought stress on the physiological characteristics and lipid metabolism of Bombax ceiba L. during subsequent drought and heat stresses

Xia

et al. 2021

BMC Plant Biol

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Background Trees of Bombax ceiba L. could produce a large number of viable seeds in the dry-hot valleys. However, the seedling regeneration of the species is difficult in these areas as mild drought often occur repeatedly which might be followed by heat stress. However, how the repeated drought affects the subsequent drought and heat tolerance of B. ceiba is not clear. In this study, chlorophyll fluorescence, soluble sugar content and lipid metabolism were measured for the drought-treated seedlings and heat-treated seedlings with or without drought hardening. Results Neither the first nor third dehydration treatments affected the photosynthetic activity and soluble sugar content of B. ceiba seedlings. However, they differentially affected the fluidity of the local membranes and the levels of diacylglycerol and phosphatidic acid. Heat shock severely decreased the photosynthetic efficiency but drought priming reduced the effects of heat shock. Moreover, heat shock with or without drought priming had differential effects on the metabolism of soluble sugars and some lipids. In addition, the unsaturation level of membrane glycerolipids increased following heat shock for non-drought-hardened seedlings which, however, maintained for drought-hardened seedlings. Conclusions The results suggest that two cycles of dehydration/recovery can affect the metabolism of some lipids during the third drought stress and may enhance the heat tolerance of B. ceiba by adjusting lipid composition and membrane fluidity.

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Impact of high temperature on sucrose translocation, sugar content and inulin yield in Cichorium intybus L. var. sativum

Cited by 16 publications

References 35 publications

Asparagus Roots: From an Agricultural By-Product to a Valuable Source of Fructans

Asparagus Roots: From an Agricultural By-Product to a Valuable Source of Fructans

Physiological and genetic characterization of heat stress effects in a common bean RIL population

Effects of repeated drought stress on the physiological characteristics and lipid metabolism of Bombax ceiba L. during subsequent drought and heat stresses

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