Physiological and ecological studies on the oestrogenic isoflavones in subterranean clover (T. subterraneum L.). X.* Isoflavone formation and carbohydrate metabolism

1972 ◽  
Vol 23 (3) ◽  
pp. 419 ◽  
Author(s):  
RC Rossiter
Keyword(s):  
Carbohydrate Metabolism ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Leaf Expansion ◽  
Curvilinear Relationship ◽  
Controlled Environment ◽  
Low Light ◽  
Trifoliate Leaf ◽  
Carbon Substrates

The relationships between isoflavone formation and carbohydrate metabolism were studied in a controlled-environment experiment at low (4700 lux) and high (31,200 lux) light intensities. During expansion of the first trifoliate leaf, isoflavone contents per cell were much lower at low light supply than at high. These low isoflavone contents were associated with low contents of sugars and starch. Protein and cell walls were less affected by low light than were sugars and starch and, presumably, competed strongly with isoflavones for carbon substrates. From the results of this and earlier controlled-environment experiments a close curvilinear relationship was obtained between isoflavones and soluble sugars per cell at the stage of full leaf expansion (when isoflavone synthesis normally ceases). Thus soluble sugar content provided a good index of the level of carbon substrates used for isoflavone synthesis. Some instances where isoflavones increase after full leaf expansion are also discussed. _________________ *Part IX, Aust. J. Agric. Res., 23: 411 (1972).

scholarly journals Alterations in the lipid and soluble sugar content of melanoxylon brauna seeds during natural and accelerated ageing

2010 ◽  
Vol 32 (3) ◽  
pp. 152-162 ◽  
Author(s):  
Viviana Borges Corte ◽  
Eduardo Euclydes de Lima e Borges ◽  
José Francisco de Carvalho Gonçalves ◽  
Mirian Sousa Silva
Keyword(s):  
Fatty Acids ◽  
Tropical Forest ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Forest Tree ◽  
Accelerated Ageing ◽  
Natural Ageing ◽  
Metabolic Reactions ◽  
Tree Seeds

The decay of seeds is irreversible and at best can only be delayed by applying techniques that reduce the velocity of the metabolic reactions involved. There is little information on the biochemistry of tropical forest tree seeds related to their storability. It was investigated the influence of the composition of lipids and soluble sugars of two storage compartments, the cotyledons and the embryonic axis, of Melanoxylon brauna Schot. (Leguminosae- Caesalpinioideae), a hardwood known as black brauna, seeds stored at 20 ºC for 0, 3, 6, 9 and 12 months (natural ageing) and for 0, 24, 48, 72 and 96 hours at 40 ºC (accelerated ageing). The levels of fatty acids and monosaccharides varied differentially in each of the embryo storage compartments. Changes in oligosaccharide levels were similar for both types of ageing, diminishing in both compartments. Ageing can be attributed to the significant decrease of oligosaccharides and the increase of glucose in both types of ageing and both embryo compartments.

scholarly journals Transcriptome analysis of Sonneratia caseolaris seedlings under chilling stress

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11506
Author(s):  
Yong Yang ◽  
Chunfang Zheng ◽  
Cairong Zhong ◽  
Tianxi Lu ◽  
Juma Gul ◽  
...  
Keyword(s):  
Carbohydrate Metabolism ◽  
Antioxidant Enzyme ◽  
Stress Responses ◽  
Chilling Stress ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Mangrove Species ◽  
Sonneratia Caseolaris ◽  
Chilling Response ◽  
Great Damage

Sonneratia caseolaris is a native mangrove species found in China. It is fast growing and highly adaptable for mangrove afforestation, but suffered great damage by chilling event once introduced to high latitude area. To understand the response mechanisms under chilling stress, physiological and transcriptomic analyses were conducted. The relative electrolyte conductivity, malondialdehyde (MDA) content, soluble sugar content and soluble protein content increased significantly under chilling stress. This indicated that S. caseolaris suffered great damage and increased the levels of osmoprotectants in response to the chilling stress. Gene expression comparison analysis of S. caseolaris leaves after 6 h of chilling stress was performed at the transcriptional scale using RNA-Seq. A total of 168,473 unigenes and 3,706 differentially expressed genes (DEGs) were identified. GO and KEGG enrichment analyses showed that the DEGs were mainly involved in carbohydrate metabolism, antioxidant enzyme, plant hormone signal transduction, and transcription factors (TFs). Sixteen genes associated with carbohydrate metabolism, antioxidant enzyme, phytohormones and TFs were selected for qRT-PCR verification, and they indicated that the transcriptome data were reliable. Our work provided a comprehensive review of the chilling response of S. caseolaris at both physiological and transcriptomic levels, which will prove useful for further studies on stress-responses in mangrove plants.

scholarly journals Biochemical and phytochemical evaluation of Stevia rebaudiana

2016 ◽  
Vol 2 (1) ◽  
pp. 121-130 ◽  
Author(s):  
Md Moniruzzaman Sohag Howlader ◽  
Sheikh Rashel Ahmed ◽  
Khadizatul Kubra ◽  
Md Khairul Hassan Bhuiyan
Keyword(s):  
Phenolic Compounds ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Stevia Rebaudiana ◽  
Reducing Sugar ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Dry Extract ◽  
Total Soluble Sugar

The present study was aimed to evaluate biochemical and phytotochemical of dry leaves of Stevia rebaudiana. Biochemical analysis indicated that Stevia leaves are a good source of carbohydrate and reducing sugar. Different extraction methods were used to prepare four different dry extracts (Extract A, B, C, D). Total soluble sugars and reducing sugars were analyzed for these four dry extracts and commercial Stevia powder. The highest amount of total soluble sugar (477 mg sugar g-1 dry extract) was obtained from extract C and higher amount of reducing sugar (82 mg g-1 dry extract) was obtained from extract D among the extracts. But commercial Stevia powder showed higher total soluble sugar content (754 mg g-1 dry powder) and highest amount of reducing sugar (98 mg g-1 dry extract) than all the extracted dry samples. The extraction process of dry extract C was feasible for the extraction of total soluble sugar. For the phytochemical screening, crude extract was tested for the presence of different chemical groups and presence of alkaloids, phenolic compounds, steroids, tannins, flavonoids, cardiac glycosides and saponins that were identified. The highest amount of total phenolic compounds (92 mg) was recorded from methanolic extract of extraction B. The lowest amount of total phenolic compounds (36 mg) was recorded in ethanolic extract of extraction A. So, Methanol proved as best solvent to extract increased quantity of total phenolic compounds than other solvents.Asian J. Med. Biol. Res. March 2016, 2(1): 121-130

Desiccation tolerance in relation to soluble sugar contents in seeds of ten coffee (CoffeaL.) species

2000 ◽  
Vol 10 (3) ◽  
pp. 393-396 ◽  
Author(s):  
Nathalie Chabrillange ◽  
Stéphane Dussert ◽  
Florent Engelmann ◽  
Sylvie Doulbeau ◽  
Serge Hamon
Keyword(s):  
Desiccation Tolerance ◽  
Coffea Arabica ◽  
High Performance ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Dry Weight ◽  
Seed Desiccation ◽  
Desiccation Sensitivity ◽  
Coffee Species

AbstractLarge differences in seed desiccation sensitivity have been observed previously among ten coffee species (Coffea arabica, C. brevipes, C. canephora, C. eugenioides, C. humilis, C. liberica, C. pocsii, C. pseudo-zanguebariae, C. sessiliflora and C.stenophylla). Of these species,C. libericaandC. humiliswere the most sensitive to desiccation andC. pseudozanguebariaethe most tolerant. A study was carried out using the same seed lots to investigate if these differences in desiccation tolerance could be correlated with differences in soluble sugar content. Soluble sugars were extracted from dry seeds and analysed using high performance liquid chromatography. The seed monosaccharide (glucose and fructose) content was very low (1.5 to 2 mg g-1dry weight [dw]) in all species studied. The sucrose content ranged from 33 mg g-1dw inC. libericaseeds to 89 mg g-1dw in seeds ofC. pocsii. Raffinose was detected in the seeds of only five species (C.arabica, C.brevipes, C.humilis, C.sessiliflora, C.stenophylla), among which only three species (C.arabica, C.sessilifloraandC.brevipes) also contained stachyose. Both raffinose and stachyose were present in very low quantities (0.3–1.4 mg g-1dw and 0.1–0.7 mg g-1dw, respectively). Verbascose was never detected. No significant relationship was found between seed desiccation sensitivity and: (i) the sugar content; (ii) the presence/absence of oligosaccharides; and (iii) the oligosaccharide:sucrose ratio.

DRY WEIGHT, SOLUBLE SUGAR CONTENT, AND STARCH CONTENT OF MAIZE KERNELS DURING THE EARLY POSTSILKING PERIOD

1978 ◽  
Vol 58 (1) ◽  
pp. 199-206 ◽  
Author(s):  
M. TOLLENAAR ◽  
T. B. DAYNARD
Keyword(s):  
Dry Matter ◽  
Zea Mays L ◽  
Starch Content ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Dry Weight ◽  
Controlled Environment ◽  
Dry Matter Accumulation ◽  
Soluble Sugar Content ◽  
Maize Kernels

Kernel development was studied in the maize (Zea mays L.) hybrids United-H106 and Funk’s G-4444, grown in a controlled-environment growth room. A method was employed in which husks were excised, and kernels were removed from the same set of ears at several subsequent sampling dates. This method did not affect the dry matter accumulation of the remaining kernels. Basal kernels (kernel numbers 6–15 in the row) and tip kernels (kernel numbers 31–40) were removed at 2-day intervals during the period from 10 to 20 days postsilking. Dry weight, ethanol-soluble sugar content, and starch content were determined for each sample. Accumulation of dry matter in the tip kernels ceased in a fraction of the United-H106 ears at the onset of the period of linear tip-kernel dry matter accumulation. Only small differences were observed in sugar content between growing and non-growing tip kernels of ears of United-H106. Starch appeared to continue to accumulate in kernels in which dry matter had ceased to accumulate. Except for a delay of approximately 2 days, the pattern of development of tip kernels in Funk’s G-4444 was similar to that of kernels at the base.

scholarly journals Dehydrins and Soluble Sugars Involved in Cold Acclimation of Rosa wichurana and Rose Cultivar ‘Yesterday’

Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 379
Author(s):  
Lin Ouyang ◽  
Leen Leus ◽  
Ellen De Keyser ◽  
Marie-Christine Van Labeke
Keyword(s):  
Cold Acclimation ◽  
Cold Hardiness ◽  
Prolonged Exposure ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Winter Season ◽  
Sugar Metabolism ◽  
Northern Regions ◽  
Cold Hardy

Rose is the most economically important ornamental plant. However, cold stress seriously affects the survival and regrowth of garden roses in northern regions. Cold acclimation was studied using two genotypes (Rosa wichurana and R. hybrida ‘Yesterday’) selected from a rose breeding program. During the winter season (November to April), the cold hardiness of stems, soluble sugar content, and expression of dehydrins and the related key genes in the soluble sugar metabolism were analyzed. ‘Yesterday’ is more cold-hardy and acclimated faster, reaching its maximum cold hardiness in December. R. wichurana is relatively less cold-hardy, only reaching its maximum cold hardiness in January after prolonged exposure to freezing temperatures. Dehydrin transcripts accumulated significantly during November–January in both genotypes. Soluble sugars are highly involved in cold acclimation, with sucrose and oligosaccharides significantly correlated with cold hardiness. Sucrose occupied the highest proportion of total soluble sugars in both genotypes. During November–January, downregulation of RhSUS was found in both genotypes, while upregulation of RhSPS was observed in ‘Yesterday’ and upregulation of RhINV2 was found in R. wichurana. Oligosaccharides accumulated from November to February and decreased to a significantly low level in April. RhRS6 had a significant upregulation in December in R. wichurana. This study provides insight into the cold acclimation mechanism of roses by combining transcription patterns with metabolite quantification.

scholarly journals Diversity in phenolic compounds, biochemical and pomological characteristics of Arbutus unedo fruits

2018 ◽  
Vol 30 (1) ◽  
pp. 139-146 ◽  
Author(s):  
Muttalip Gündoğdu ◽  
Sezai Ercisli ◽  
Ihsan Canan ◽  
Erdal Orman ◽  
Muhammad Sameeullah ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Organic Acid ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Fruit Weight ◽  
Arbutus Unedo ◽  
Strawberry Tree ◽  
Mediterranean Regions ◽  
Seed Propagation

AbstractStrawberry trees (Arbutus unedoL.) are naturally grown in particular Black Sea and Mediterranean regions of Turkey with great diversity due to continuous seed propagation for centuries. The trees differ in terms of most of the horticultural characteristics. We investigated the phenolic compounds and the biochemical and pomological characteristics of the fruits of eight strawberry tree selections naturally grown in the western part of Turkey. Significant differences were found among the genotypes in terms of their phenolic compounds and their biochemical and pomological characteristics. Among soluble sugars, fructose (11.63 g 100 g−1) was the dominant sugar, followed by glucose (6.10 g 100 g−1) and sucrose (1.44 g 100 g−1) for all the genotypes. Positive correlation was found between fruit weight and soluble sugar content. Malic acid was the major organic acid (0.67-2.33 g 100 g−1), and the second major organic acid in strawberry tree fruits was citric acid (0.25-0.87 g 100 g−1). Vitamin C content was an average of 56.22 g 100 g−1for the eight genotypes. Among phenolic compounds, gallic acid was dominant (1.62-7.29 mg 100 g−1), followed by chlorogenic acid (1.23-3.14 mg 100 g−1), on an average basis.

scholarly journals Quality of kohlrabi stems (Brassica oleracea var. gongylodes L.) kept in cold storage

2011 ◽  
Vol 23 (2) ◽  
pp. 107-110 ◽  
Author(s):  
Maria Gawęda ◽  
Zofia Nizioł-Łukaszewska
Keyword(s):  
Ascorbic Acid ◽  
Brassica Oleracea ◽  
Cold Storage ◽  
Dry Matter ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Storage Period ◽  
Dry Matter Content

Quality of kohlrabi stems (Brassica oleracea var. gongylodes L.) kept in cold storage Two green kohlrabi cultivars, ‘White Delikates’ and ‘Korist’ F1, were kept in cold storage at a temperature of 2°C and a relative humidity of 95%. Natural mass losses were measured at monthly intervals and dry matter content, soluble sugars, L-ascorbic acid and isothiocyanates were analysed. During five months of storage, very low losses of kohlrabi mass were detected. The decrease in dry matter during that time was between 15 and 18%. After a brief increase, soluble sugar content decreased during storage, and in March, 50% of the initial sugar content was calculated for ‘Delikates’ kohlrabi flesh and 65% for ‘Korist’. L-ascorbic acid was well preserved in the kohlrabi, since 90% remained after storage was completed. The isothiocyanate content changed little and the vegetable remained a good source of these compounds throughout the storage period.

scholarly journals Using electrical impedance tomography for rapid determination of starch and soluble sugar contents in Rosa hybrida

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ji Qian ◽  
Juan Zhou ◽  
Bao Di ◽  
Yang Liu ◽  
Gang Zhang ◽  
...  
Keyword(s):  
Regression Model ◽  
Electrical Impedance Tomography ◽  
Regression Models ◽  
Electrical Impedance ◽  
Physiological State ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Rosa Hybrida ◽  
Impedance Tomography

AbstractSoluble sugars and starches are important metabolites of plant life and physiological markers of plant stress response. There is an urgent need to develop a non-destructive and rapid method for determining plant starch and soluble sugar contents. Electrical impedance tomography (EIT) technology has been used to determine the physiological state and cold resistance of select plant tissues. However, so far there have been no reports on the use of EIT for the rapid estimation of soluble sugar and starch contents. In this study, EIT was used to obtain reconstructed voltage values and estimate starch and soluble sugar contents in the stems of three Rosa hybrida cultivars during February to May, which were grown in the Specimen Park (38° 50′ N, 115° 26′ E) of Hebei Agricultural University, Baoding City, Hebei Province, China. Stems from two of the cultivars were used for establishing regression models for starch and soluble sugar contents as functions of reconstructed voltage values. The third cultivar was used to test the accuracy of the regression models. The quadratic regression model was best for determining soluble sugar content and the logarithmic regression model was best for determining starch content. Thus, this research provided technical support for using EIT to analyze changes in physiological parameters and to rapidly estimate physiological indexes of plants. More studies were now needed to validate the results in this paper.

scholarly journals Inhibitory Effects of Oyster Shell on the Spathe “Greenback” of Anthurium andraeanum Lind.

2019 ◽  
Vol 131 ◽  
pp. 01108
Author(s):  
Chun-hua Xia ◽  
Yi-wei Chen ◽  
Jian-hua Chen
Keyword(s):  
Sugar Content ◽  
Soluble Sugar ◽  
Oyster Shell ◽  
Anthocyanin Content ◽  
Light Conditions ◽  
Low Light ◽  
Pal Activity ◽  
Cultivation Technique ◽  
Anthurium Andraeanum ◽  
Shell Fragments

Anthurium andraeanum Lind. is an important tropical flower. However, the spathe of A. andraeanum develops a ”greenback” under low-light conditions. This study aimed to evaluate the use of oyster shell supplementation as a cultivation technique for inhibiting the spathe “greenback” of A. andraeanum under low-light conditions. Appropriate calcium from micro-dissolution of oyster shell can improve the activity of phenylalanine ammonia lyase (PAL) which is positively correlated with the anthocyanin content. Using regression models and response surface methodology (RSM), the relationships between oyster shell fragments and the anthocyanin content were determined. The results showed that the solubility of oyster shells increased with the increase in fragment weight, C, and time, T at pH 5.9. In oyster shell substrate, cultivation of A. andraeanum under low-light conditions (less than 220 μmol·m−2·s−1) at pH 5.9, regression analysis showed that the PAL activity in pedicels of A. andraeanum first increased and then decreased with the increase in oyster shell fragment weight C, and the 286 mg oyster shell fragments greatly increased the PAL activity of A. andraeanum pedicels within 8 weeks (w). The 286 mg oyster shell fragments significantly increased the anthocyanin content in A. andraeanum spathes under weak-light conditions within 8 h, and the soluble sugar content reached the maximum value at 15 weeks as well, together with the pedicel diameter, soluble sugar and water content, thus inhibiting the spathe “greenback” of A. andraeanum.

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