scholarly journals The Evolutionary Significance of Sugar Accumulation in Saccharum

1963 ◽  
Vol 16 (4) ◽  
pp. 737 ◽  
Author(s):  
TA Bull ◽  
KT Glasziou
Keyword(s):  
Selection Pressure ◽  
Sugar Content ◽  
Evolutionary Significance ◽  
Sugar Accumulation ◽  
Ecological Situation ◽  
Saccharum Complex ◽  
Ecological Conditions ◽  
Sucrose Storage ◽  
Sugar Levels ◽  
Human Selection

Sugar levels in the various species of the Saccharum complex suggest an evolutionary increase in sugar content. Under suitable ecological conditions, survival through sucker growth may be dependent on rapid mobilization of stored carbohydrate. Selection pressure for sucrose storage would then oocur if sucrose was more readily remobilized than other storage carbohydrates. It is suggested that this ecological situation occurred in New Guinea, and that natural and not human selection lead to the evolution of S. oJJicinarum.

scholarly journals VvSWEET10 Mediates Sugar Accumulation in Grapes

Genes ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 255 ◽  
Author(s):  
Zhan Zhang ◽  
Luming Zou ◽  
Chong Ren ◽  
Fengrui Ren ◽  
Yi Wang ◽  
...  
Keyword(s):  
Sugar Content ◽  
Sugar Transport ◽  
Grape Berry ◽  
Critical Event ◽  
Sugar Accumulation ◽  
Sugar Transporters ◽  
Market Values ◽  
Berry Quality ◽  
Sugar Levels

Sugar accumulation is a critical event during grape berry ripening that determines the grape market values. Berry cells are highly dependent on sugar transporters to mediate cross-membrane transport. However, the role of sugar transporters in improving sugar accumulation in berries is not well established in grapes. Herein we report that a Sugars Will Eventually be Exported Transporter (SWEET), that is, VvSWEET10, was strongly expressed at the onset of ripening (véraison) and can improve grape sugar content. VvSWEET10 encodes a plasma membrane-localized transporter, and the heterologous expression of VvSWEET10 indicates that VvSWEET10 is a hexose-affinity transporter and has a broad spectrum of sugar transport functions. VvSWEET10 overexpression in grapevine calli and tomatoes increased the glucose, fructose, and total sugar levels significantly. The RNA sequencing results of grapevine transgenic calli showed that many sugar transporter genes and invertase genes were upregulated and suggest that VvSWEET10 may mediate sugar accumulation. These findings elucidated the role of VvSWEET10 in sugar accumulation and will be beneficial for the improvement of grape berry quality in the future.

Susceptibility to root tip breakage increases storage losses of sugar beet genotypes

2016 ◽  
pp. 625-632 ◽  
Author(s):  
Christa Hoffmann ◽  
Katharina Schnepel
Keyword(s):  
Sugar Beet ◽  
Sugar Content ◽  
Close Correlation ◽  
Invert Sugar ◽  
Root Tip ◽  
Sugar Accumulation ◽  
Genotypic Differences ◽  
Storage Losses ◽  
Controlled Conditions ◽  
Sugar Loss

Good storability of sugar beet is of increasing importance, not only to reduce sugar losses, but also with regard to maintaining the processing quality. Genotypic differences are found in storage losses. However, it is not clear to which extent damage may contribute to the genotypic response. The aim of the study was to quantify the effect of root tip breakage on storage losses of different genotypes. For that purpose, in 2012 and 2013, six sugar beet genotypes were grown in field trials at two locations. After lifting roots were damaged with a cleaning device. They were stored for 8 and 12 weeks, either under controlled conditions in a climate container at constant 8°C, or under ambient temperature in an outdoor clamp. The close correlation underlines that storage losses under controlled conditions (constant temperature) can well be transferred to conditions in practice with fluctuating temperature. The strongest impact on invert sugar accumulation and sugar loss after storage resulted from storage time, followed by damage and growing environment (year × growing site). Cleaning reduced soil tare but increased root tip breakage, in particular for genotypes with low marc content. During storage, pathogen infestation and invert sugar content of the genotypes increased with root tip breakage, but the level differed between growing environments. Sugar loss was closely related to invert sugar accumulation for all treatments, genotypes and environments. Hence, it can be concluded that root tip breakage contributes considerably to storage losses of sugar beet genotypes, and evidently genotypes show a different susceptibility to root tip breakage which is related to their marc content. For long-term storage it is therefore of particular importance to avoid damage during the harvest operations and furthermore, to have genotypes with high storability and low susceptibility to damage.

scholarly journals Sugar accumulation in winter wheat crops depending on the sowing dates

2019 ◽  
Vol 49 (2) ◽  
pp. 27-33
Author(s):  
S. I. Anosov ◽  
A. S. Surnachev ◽  
K. K. Musinov
Keyword(s):  
Winter Wheat ◽  
Coefficient Of Variation ◽  
Sugar Content ◽  
Weather Conditions ◽  
Sugar Accumulation ◽  
Planting Dates ◽  
Air Temperatures ◽  
Sowing Dates ◽  
Soft Winter Wheat ◽  
Growing Conditions

The object of the research was to study the influence of sowing dates on sugar accumulation in different varieties of soft winter wheat. Less winterhardy variety of soft winter wheat Novosibirskaya 2 was compared with more winter-hardy ones Novosibirskaya 3, Novosibirskaya 40 and Krasnoobskaya ozimaya. The research was carried out in 2016-2018 inthe established experimental plot in the foreststeppe of Priobye, theObregion. The predecessor was bare fallow. The planting dates were August 20, September 1, September 10. Weather conditions of the autumn growing season, during which the accumulation of sugars occurs, differed significantly depending on the year of study and the sowing dates. The warmest conditions were in 2018, whereas the coolest – in 2017. The amount of accumulated sugars varied depending on the growing conditions and genotypic characteristics of varieties. The highest amount of sugars was accumulated by all varieties during the third term of planting, the lowest amount – during the second term. Lower air temperatures contributed to the increase in the amount of sugars, even when the duration of their accumulation period was shortened, which can be explained by a change in carbohydrate balance in crops when the accumulation of sugars is greater than their consumption for crop respiration. The genotype plays an important role in the carbohydrate metabolism of plants. In more winter-hardy varieties (Novosibirskaya 40, Novosibirskaya 3), the change in the amount of accumulated sugars in contrasting conditions ranged insignificantly (the coefficient of variation was 9.1 and 8.7%, respectively). At the same time, plants of the less winter-hardy variety of Novosibirskaya 2 showed a significantly greater variation in the sugar content under similar conditions (the coefficient of variation 24.7%). Cooler conditions of a later term of sowing contributed to the greatest amount of accumulated sugars. Varietal differences also determined changes in carbohydrate balance.

scholarly journals Functional Analysis Reveals the Regulatory Role of PpTST1 Encoding Tonoplast Sugar Transporter in Sugar Accumulation of Peach Fruit

2020 ◽  
Vol 21 (3) ◽  
pp. 1112 ◽  
Author(s):  
Peng ◽  
Wang ◽  
Ogutu ◽  
Liu ◽  
Liu ◽  
...  
Keyword(s):  
Sugar Content ◽  
Subcellular Location ◽  
Promoter Sequence ◽  
Sugar Accumulation ◽  
Sugar Transporter ◽  
Peach Fruit ◽  
Accumulation Pattern ◽  
Dcaps Marker ◽  
Significant Difference

Sugar content is related to fruit sweetness, and the complex mechanisms underlying fruit sugar accumulation still remain elusive. Here, we report a peach PpTST1 gene encoding tonoplast sugar transporter that is located in the quantitative trait loci (QTL) interval on Chr5 controlling fruit sucrose content. One derived Cleaved Amplified Polymorphic Sequence (dCAPS) marker was developed based on a nonsynonymous G/T variant in the third exon of PpTST1. Genotyping of peach cultivars with the dCAPS marker revealed a significant difference in fruit sugar content among genotypes. PpTST1 is located in the tonoplast, and substitution of glutamine by histidine caused by the G/T variation has no impact on subcellular location. The expression profile of PpTST1 exhibited a consistency with the sugar accumulation pattern, and its transient silencing significantly inhibited sugar accumulation in peach fruits. All of these results demonstrated the role of PpTST1 in regulating sugar accumulation in peach fruit. In addition, cis-elements for binding of MYB and WRKY transcript factors were found in the promoter sequence of PpTST1, suggesting a gene regulatory network of fruit sugar accumulation. Our results are not only helpful for understanding the mechanisms underlying fruit sugar accumulation, but will also be useful for the genetic improvement of fruit sweetness in peach breeding programs.

scholarly journals Effect of GA3 and Gly Plant Growth Regulators on Productivity and Sugar Content of Sugarcane

Agriculture ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 136 ◽  
Author(s):  
Nguyen ◽  
Dang ◽  
Nguyen ◽  
Tran ◽  
Giang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Large Scale ◽  
Sugar Content ◽  
Sugar Accumulation ◽  
Sucrose Accumulation ◽  
Net Income ◽  
Actual Yield

The use of plant growth regulators is one effective solution to improve sugarcane yields and sugar content in several countries. In this study, we examined the role of gibberellin acid (GA3) and glyphosate (Gly) plant growth regulators to determine the appropriate concentration of GA3 and Gly to increase the yield of sugarcane and sugar accumulation, respectively. The statistical results showed that GA3 was sprayed at 150 ppm to increment the actual yield by 19.94%; sucrose accumulation increased by 2.21%. With Gly treatment, although the yield decreased by 3.17%, sucrose accumulation increased by 11.27% compared to control trials. In this study, the combined concentration of 150 ppm of both GA3 and Gly gave the best results, for which sucrose accumulation increased from 2.21% to 10.74% and from 19.94% to 20.97% for actual yield. The results led to increased net income compared to the control. To address concerns about residues of plant growth regulators, residues of GA3 and Gly were evaluated after the sugarcane harvest using the HPLC and UV-vis methods, respectively. The analyzed results showed that their residues were lower than what is permitted in several countries. This showed the applicability of the study, on a large scale, to increase sucrose accumulation, productivity of sugarcane, and profit for farmers.

scholarly journals Studies on the Sugar Accumulation and Carbohydrate Splitting Enzyme Levels in Post Harvested and Cold Stored Potatoes

1970 ◽  
Vol 16 ◽  
pp. 95-99 ◽  
Author(s):  
Md Rezaul Karim ◽  
MMH Khan ◽  
Md Salim Uddin ◽  
NK Sana ◽  
F Nikkon ◽  
...  
Keyword(s):  
Key Words ◽  
Cold Storage ◽  
Enzyme Activities ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Reducing Sugar ◽  
Sugar Accumulation ◽  
Potato Varieties ◽  
Total Soluble Sugar

Significant differences were found in sugar content and carbohydrate splitting enzyme activities in tubers of ten indigenous potato varieties at harvesting and after keeping at cold storage. The activities of invertase, amylase, β-galactosidase and cellulase in all varieties were found to be increased by 2-12, 1.2-4, 1.9-4.5, and 1.1-3.7 folds, respectively from harvesting to cold stored potatoes. The amount of starch and sucrose were found to be decreased by 1.15-2.8 and 1.02-1.4 folds, respectively from harvesting to cold stored in all varieties. Total soluble sugar and reducing sugar contents in potatoes were increased by 1.02-1.4 and 4-11 folds, respectively from harvesting to cold stored in all varieties of potatoes. The amount of reducing sugar increased in cold stored potatoes due to the increased activities of carbohydrate splitting enzymes. Key words: Potatoes, Indigenous, Carbohydrate splitting enzymes, Sugars. DOI:10.3329/jbs.v16i0.3748 J. bio-sci. 16: 95-99, 2008

scholarly journals The impact of salt, fat and sugar levels on toddler food intake

2010 ◽  
Vol 105 (4) ◽  
pp. 645-653 ◽  
Author(s):  
Sofia Bouhlal ◽  
Sylvie Issanchou ◽  
Sophie Nicklaus
Keyword(s):  
Food Intake ◽  
Positive Impact ◽  
Sugar Content ◽  
Green Beans ◽  
Added Sugar ◽  
Salt Level ◽  
Sugar Addition ◽  
Before And After ◽  
Sugar Levels ◽  
The Impact

Understanding the early determinants of food intake, in particular the role of food sensory quality, is a necessary step to improve the prevention of unhealthy food habits. However, the extent to which food intake varies according to salt, fat and sugar content is imperfectly known. The present study aimed at evaluating whether toddler food intake varied during lunches or snacks in which salt, fat or sugar contents had been modified in common foods. Seventy-four children (30 (se 0·5) months old) participated in the study in their usual day-care centres. Every other week, they were served lunches composed, among other items, of green beans and pasta with varying salt (0, 0·6 and 1·2 % added salt) or fat (0, 2·5 and 5 % added butter) levels and afternoon snacks composed of fruit purée varying in sugar level (0, 5 and 10 % added sugar). During each meal, children could eat as much as they wanted from the target foods. Each food was weighed before and after the meal. Salt level had a positive impact on the intake of the target foods. On the contrary, no impact of added fat or added sugar levels was observed. This implies that fat and sugar addition could be avoided in foods for children without having an impact on palatability, allowing the energy density of children's diet to be limited. Salt addition should be limited, but its suppression in vegetables, whose intake is to be promoted, should be considered cautiously.

Growth and Sugar Accumulation of Sugarcane. III. Development of Commercial Clones and their Progenies in Single Row Plots

1977 ◽  
Vol 13 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Donald MacColl
Keyword(s):  
Leaf Blade ◽  
Sugar Content ◽  
Sugar Accumulation ◽  
Fresh Weight ◽  
Single Row ◽  
C Fibre ◽  
The Mean ◽  
Leaf Appearance ◽  
Rate Of Leaf Appearance

SUMMARYIn short clonal rows of sugarcane the mean weight of adjacent rows contributed significantly to the variance of row weight, mainly because some clones could increase their cane number at the expense of slow-tillering clones. Weight per cane and sugar content were unaffected by competition. Significant correlations were found between sugar content and (a) the rate of leaf appearance, (b) the ratio of fresh weight of leaf blade to fresh weight of joint, and (c) fibre as a percentage of cane fresh weight.

scholarly journals Effect of Sugar Content on Acetaldehyde Yield in Cigarette Smoke

2012 ◽  
Vol 25 (2) ◽  
pp. 381-395 ◽  
Author(s):  
X Cahours ◽  
T Verron ◽  
S Purkis
Keyword(s):  
Multivariate Analysis ◽  
Tobacco Plant ◽  
Sugar Content ◽  
Mainstream Smoke ◽  
Added Sugar ◽  
Contributory Factors ◽  
Wide Range ◽  
Sugar Levels ◽  
Work Supports ◽  
The Relationship

AbstractThe relationship between cigarette blend sugar and acetaldehyde formed in its smoke is a matter of current regulatory interest. This paper provides a re-analysis of data from 83 European commercial cigarettes studied in the 1970s and more modern data on sugar levels and acetaldehyde yields from a series of 97 European commercial cigarettes containing both inherent sugar and in other cases inherent and added sugar. It also provides data from 65 experimental cigarette products made from single curing grades of tobacco, having a wide range of inherent sugar levels but no added sugar.This study has shown that there is no relationship between acetaldehyde yields and blend sugar content even if a multivariate analysis is carried out taking into account Nicotine Free Dry Particulate Matter (NFDPM) as a co-factor. Such analyses should take into consideration each of the known contributory factors in order to avoid misleading conclusions.No distinction was found between the mainstream acetaldehyde yields from dark air-cured, flue-cured or US blended style cigarettes irrespective of their sugar content after taking account of differences in NFDPM yields. Similarly, no distinction was found between mainstream acetaldehyde yields of cigarettes made from single grades of either flue-cured, sun-cured or air-cured tobaccos with no sugar added.This work supports the conclusion that structural material in the tobacco plant is the main source of acetaldehyde in mainstream smoke after combustion during cigarette smoking.

scholarly journals NEW PROMISING GRAPEVINE FORMS BRED IN ARRIV&W FOR HIGH QUALITY RED WINES

Russian vine ◽  
2021 ◽  
Vol 15 ◽  
pp. 57-62
Author(s):  
N.V. Matveeva ◽  
◽  
M.V. Bahmetova ◽  
Keyword(s):  
Ph Value ◽  
Sugar Content ◽  
Titratable Acidity ◽  
High Potential ◽  
Sugar Accumulation ◽  
Red Wines ◽  
High Quality ◽  
High Sugar ◽  
Juice Yield ◽  
Technological Assessment

The results of a technological assessment of promising red technical forms of grapes bred by ARRIV&W named after Ya.I. Potapenko are presented. These forms (9-8-2-14pk, 8-7-1-5, 8-5-3-18) are distinguished by high sugar accumulation and optimal juice yield. The re-search was carried out in the laboratory of winemaking technology in micro-winemaking conditions. The mass of one batch of grapes was 5–10 kg, in the wort were determined: titratable acidity, sugar content, pH value, as well as the indicator of technical maturity and glucoacidometric indicator. According to the classical technology, red dry wine materials were prepared. In the studied wine samples the main physicochemical indicators were de-termined. As a result of the organoleptic eval-uation, conclusions were made about the ad-visability of using these forms for the produc-tion of natural red table wines. Augusta was selected as a control variety. Wine materials from the studied varieties were distinguished by their typical, dark ruby color, dense struc-ture and harmonious taste. This indicates a high potential of the studied forms.

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