Cell wall enzymes and changes in sugar content in pollinated orchids treated with ethylene inhibitors and sugars

2013 ◽  
Vol 159 ◽  
pp. 143-151 ◽  
Author(s):  
Zuliana Razali ◽  
Amru Nasrulhaq Boyce ◽  
Helen Nair ◽  
Somasundram Chandran
Keyword(s):  
Cell Wall ◽  
Sugar Content ◽  
Ethylene Inhibitors ◽  
Cell Wall Enzymes

scholarly journals Synthesis of Lipid-Carbohydrate-Peptidyl-RNA Conjugates to Explore the Limits Imposed by the Substrate Specificity of Cell Wall Enzymes on the Acquisition of Drug Resistance

2018 ◽  
Vol 24 (56) ◽  
pp. 14911-14915 ◽  
Author(s):  
Matthieu Fonvielle ◽  
Ahmed Bouhss ◽  
Coralie Hoareau ◽  
Delphine Patin ◽  
Dominique Mengin-Lecreulx ◽  
...  
Keyword(s):  
Drug Resistance ◽  
Cell Wall ◽  
Substrate Specificity ◽  
Cell Wall Enzymes

scholarly journals Calcium- and hormone-driven regulation of secondary metabolism and cell wall enzymes in grape berry cells

2018 ◽  
Vol 231 ◽  
pp. 57-67 ◽  
Author(s):  
Viviana Martins ◽  
Ana Garcia ◽  
Cátia Costa ◽  
Mariana Sottomayor ◽  
Hernâni Gerós
Keyword(s):  
Cell Wall ◽  
Secondary Metabolism ◽  
Grape Berry ◽  
Cell Wall Enzymes

scholarly journals Variability in biochemical composition and cell wall constituents among seven varieties in Ghanaian yan (Dioscorea SP) germplasm

2013 ◽  
Vol 13 (59) ◽  
pp. 8106-8127
Author(s):  
EO Afoakwa ◽  
◽  
D Polycarp ◽  
AS Budu ◽  
H Mensah-Brown ◽  
...  
Keyword(s):  
Cell Wall ◽  
Analytical Methods ◽  
Biochemical Composition ◽  
Amylose Content ◽  
Lignin Content ◽  
Sugar Content ◽  
Total Sugar ◽  
Total Sugar Content ◽  
Neutral Detergent Fibre ◽  
Acid Detergent Fibre

This work characterized the most cultivated and consumed yam ( Dioscorea ) cultivars within the Ghanaian yam germpla sm based on their biochemical and cell wall constituents to assess their potential alternative food and industrial processing applications. Samples were analyzed for their biochemical composition - starch, amylose, amylopectin, total sugars, reducing sugar s and non- reducing sugars along the head, middle and tail regions of each tuber using standard analytical methods. Cell wall constituents - acid detergent fibre, neutral detergent fibre, acid detergent lignin, cellulose and hemicellulose of each tuber were also determined using standard analytical methods. The results showed no significant differences at p<0.05 in biochemical compositions along the length of the studied cultivars. D. cayenensis (Pure -yellow), D. rotundata (Pona) and D. alata (Matches) were found to have high starch contents (63.16- 65.69%, 63.54- 65.30% and 63.24- 65.17% respectively). Amylose content was observed to vary along the length of the tubers for the varieties studied. D. alata (Matches) was observed to contain the highest amylose con tent of 19.66- 20.64%. No identifiable trend was however, observed for the amylopectin content along the length between the varieties investigated. D. bulbifera recorded the lowest amylopectin content of 41.29%, 43.59% and 44.63% while D. esculenta had the highest with 49.84%, 50.24% and 50.13% along the tail, middle and head sections respectively. Total sugar content varied significantly (p<0.05) along the lengths of all the varieties investigated. It was higher at the tail portions for all the varieties studied than the head regions; the middle portions recorded the least. D. bulbifera recorded highest total sugar contents (4.74- 4.84%) and total sucrose (3.58 -3.64%). There were significant differences ( p<0.05) in the cell wall constituents of the yam varieties. Cellulose was found to be the most common cell wall component with D. rotundata having the highest level of 3.36% whilst D. dumetorum had the least (1.56%). Hemicellulose content ranged between 0.42 g/100g in D. alata to 4.58 g/100g in D. esculenta while lignin content ranged from 1.56 g/100g in D. dumetorum to 2.87 g/100g for D. praehensalis . There were significant differences (p<0.05) in the neutral detergent fibre found in Dioscorea esculenta and the other yam species . It ranged from 1.18 g/100g in D. alata to 5.46 g/100g in D. esculenta . Less than 1% of acid detergent fibre was identified in the yam varieties , suggesting varied levels of biochemical composition and cell wall constituents in the different yam varieties .

scholarly journals Relationship between Texture and Cell Wall Polysaccharides of Fruit Flesh in Various Species of Citrus

HortScience ◽  
1996 ◽  
Vol 31 (1) ◽  
pp. 114-116 ◽  
Author(s):  
Noboru Muramatsu ◽  
Toshio Takahara ◽  
Kiyohide Kojima ◽  
Tatsushi Ogata
Keyword(s):  
Cell Wall ◽  
Ethylenediaminetetraacetic Acid ◽  
Sugar Content ◽  
Correlation Coefficients ◽  
Cell Wall Polysaccharide ◽  
Cell Wall Polysaccharides ◽  
Satsuma Mandarin ◽  
Fruit Flesh ◽  
Polysaccharide Composition ◽  
The Relationship

Various species and cultivars of citrus were studied to determine the relationship between texture and cell wall polysaccharide content of fruit flesh. Among those tested cultivars, navel orange (Citrus sinensis Osbeck) and hassaku (C. hassaku Hort. ex Tanaka) were firmest, `Fukuhara orange' (C. sinensis Osbeck) was intermediate, and satsuma mandarin (C. unshiu Marc.) was softest. There was a 3-fold difference in firmness among the 12 citrus cultigens measured. Cohesiveness values ranged from 0.30 to 0.49 and were not correlated with fruit firmness. Sugar content in each cell wall fraction was highest in the water and EDTA fractions, followed by the hemicellulose fraction, and was lowest in the cellulose fraction. Correlation coefficients between firmness and sugar content ranged from 0.69 to 0.88 and were highest in the cellulose fraction. This study suggests that firmness of fruit flesh among the cultigens is influenced by cell wall polysaccharide composition. Chemical name used: ethylenediaminetetraacetic acid (EDTA).

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