scholarly journals Insensitivity of Barley Endosperm ADP-Glucose Pyrophosphorylase to 3-Phosphoglycerate and Orthophosphate Regulation

1993 ◽  
Vol 101 (1) ◽  
pp. 179-186 ◽  
Author(s):  
L. A. Kleczkowski ◽  
P. Villand ◽  
E. Luthi ◽  
O. A. Olsen ◽  
J. Preiss
Keyword(s):  
Barley Endosperm ◽  
Adp Glucose Pyrophosphorylase

Is There an Alternative Pathway for Starch Biosynthesis in Cereal Seeds?

1994 ◽  
Vol 49 (3-4) ◽  
pp. 215-219 ◽  
Author(s):  
Per Villand ◽  
Leszek A. Kleczkowski
Keyword(s):  
Direct Evidence ◽  
Alternative Pathway ◽  
Genetic Data ◽  
Starch Biosynthesis ◽  
Barley Seed ◽  
Barley Endosperm ◽  
Key Enzyme ◽  
Cereal Seed ◽  
Adp Glucose Pyrophosphorylase ◽  
Glucose Carrier

A hypothesis is presented concerning a putative extra-am yloplastic location of barley seed endosperm ADP-glucose pyrophosphorylase (AGPase), a key enzyme of starch biosynthesis. The hypothesis is based both on indirect and direct evidence obtained in our laboratory as well as on data of other investigators. It is proposed that ADP-glucose form ed by the extraamyloplastic enzyme is transported to the am yloplasts via an ADP-glucose carrier in the plastid membrane, and then is utilized by the starch biosynthesizing machinery of these organelles. In addition to the extra-am yloplastic form of AGPase, barley endosperm contains also a second isozyme of AGPase, located in the amyloplasts. Presence of isozymes of AGPase in cereal seed endosperm is consistent with biochemical, molecular and genetic data on starch biosynthesis in this tissue

scholarly journals ADP-Glucose Pyrophosphorylase Large Subunit cDNA from Barley Endosperm

1992 ◽  
Vol 100 (3) ◽  
pp. 1617-1618 ◽  
Author(s):  
Per Villand ◽  
Odd-Arne Olsen ◽  
Andrzej Kilian ◽  
Leszek A. Kleczkowski
Keyword(s):  
Large Subunit ◽  
Barley Endosperm ◽  
Adp Glucose Pyrophosphorylase

scholarly journals Study on the Inhibitory Activity of a Synthetic Defensin Derived from Barley Endosperm against Common Food Spoilage Yeast

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 165
Author(s):  
Laila N. Shwaiki ◽  
Aylin W. Sahin ◽  
Elke K. Arendt
Keyword(s):  
Apple Juice ◽  
Digestive Enzyme ◽  
Inhibitory Effect ◽  
Food Preservation ◽  
Food Spoilage ◽  
Inhibitory Effects ◽  
Barley Endosperm ◽  
Spoilage Yeast ◽  
Spoilage Yeasts ◽  
Spoilage Microorganisms

In the food industry, food spoilage is a real issue that can lead to a significant amount of waste. Although current preservation techniques are being applied to reduce the occurrence of spoilage microorganisms, the problem persists. Food spoilage yeast are part of this dilemma, with common spoilers such as Zygosaccharomyces, Kluyveromyces, Debaryomyces and Saccharomyces frequently encountered. Antimicrobial peptides derived from plants have risen in popularity due to their ability to reduce spoilage. This study examines the potential application of a synthetic defensin peptide derived from barley endosperm. Its inhibitory effect against common spoilage yeasts, its mechanisms of action (membrane permeabilisation and overproduction of reactive oxygen species), and its stability in different conditions were characterised. The safety of the peptide was evaluated through a haemolysis and cytotoxicity assay, and no adverse effects were found. Both assays were performed to understand the effect of the peptide if it were to be consumed. Its ability to be degraded by a digestive enzyme was also examined for its safety. Finally, the peptide was successfully applied to different beverages and maintained the same inhibitory effects in apple juice as was observed in the antiyeast assays, providing further support for its application in food preservation.

Increasing maize seed weight by enhancing the cytoplasmic ADP-glucose pyrophosphorylase activity in transgenic maize plants

2007 ◽  
Vol 88 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Zhangying Wang ◽  
Xiaoping Chen ◽  
Jianhua Wang ◽  
Tingsong Liu ◽  
Yan Liu ◽  
...  
Keyword(s):  
Seed Weight ◽  
Transgenic Maize ◽  
Maize Seed ◽  
Maize Plants ◽  
Adp Glucose Pyrophosphorylase
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