The goal of our work was a role of phosphorylase (EC. 2.4.1.1) in starch accumulation in plastids of storage parenchyma cells in potato minitubers forming under clinorotation. An increased enzyme activity under the influence of simulated microgravity has been revealed by using the biochemical and electron cytochemical methods. The obtained results suggest the correlation between an increase in phosphorylase activity and acceleration growth rate and senescence of plant storage organs in microgravity.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
The plastidial glucan phosphorylase modulates maltodextrin metabolism and affects starch parameters in Arabidopsis thaliana.
J Exp Bot
January 2025
Biopolymer Analytics, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, Building 20, 14476 Potsdam-Golm, Germany.
The plastidial α-glucan phosphorylase (PHS1) can catalyze the elongation and degradation of glucans, but its exact physiological role in plants is not completely deciphered. A plethora of studies have indicated that PHS1 is involved in transitory starch turnover, both in photosynthetic tissues as well as reserve starch accumulation in sink organs of multiple species, by exerting its effects on the plastidial maltodextrin pools. Recent studies have also established its role in the mobilization of short maltooligosaccharides (MOSs), thereby assisting in starch granule initiation.
View Article and Find Full Text PDFProhexadione Calcium Improves Rice Yield Under Salt Stress by Regulating Source-Sink Relationships During the Filling Period.
Plants (Basel)
January 2025
College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China.
Salt stress is an important factor affecting the growth and development of rice, and prohexadione calcium (Pro-Ca) plays an important role in alleviating rice salt stress and improving rice yield. However, there are few studies on how Pro-Ca improves rice yield under salt stress by regulating the source-sink metabolism. In this study, we used Guanghong 3 (salt-tolerant variety) and Huanghuazhan (salt-sensitive variety) as experimental materials to investigate the dynamic changes in the synthesis and partitioning of nonstructural carbohydrates among source-sink, the dynamic changes in related enzyme activities, the effects of the source-sink metabolism on yield in rice under salt stress and the effect of Pro-Ca during the filling period.
View Article and Find Full Text PDFTranscription factor MAZ activates the transcription of hypomethylated TYMP in ccRCC.
Funct Integr Genomics
January 2025
School of Medical Technology, Tianjin Medical University, Tianjin, 300203, China.
Clear cell renal cell carcinoma (ccRCC) is a highly malignant tumor characterized by a significant propensity for recurrence and metastasis. DNA methylation has emerged as a critical epigenetic mechanism with substantial utility in cancer diagnosis. In this study, multi-omics data were utilized to investigate the target genes regulated by the transcription factor MYC-associated zinc finger protein (MAZ) in ccRCC, leading to the identification of thymidine phosphorylase (TYMP) as a gene with notably elevated expression in ccRCC.
View Article and Find Full Text PDFCycling Dof Factor 3 mediates light-dependent ascorbate biosynthesis by activating GDP-l-galactose phosphorylase in Rosa roxburghii fruit.
Plant Physiol
December 2024
Guizhou Engineering Research Center for Fruit Crops, Agricultural College, Guizhou University, Guiyang, Guizhou, China.
Light plays an important role in determining the l-ascorbate (AsA) pool size in plants, primarily through the transcriptional regulation of AsA metabolism-related genes. However, the specific mechanism of transcriptional induction responsible for light-dependent AsA biosynthesis remains unclear. In this study, we used a promoter sequence containing light-responsive motifs from GDP-L-galactose phosphorylase 2 (RrGGP2), a key gene involved in AsA overproduction in Rosa roxburghii fruits, to identify participating transcription factors.
View Article and Find Full Text PDFModeling the Impact of Extracellular Vesicle Cargoes in the Diagnosis of Coronary Artery Disease.
Biomedicines
November 2024
Department of Genetics, Cell and Immunobiology, Semmelweis University, 1085 Budapest, Hungary.
: We aimed to assess the relationship among circulating extracellular vesicles (EVs), hypoxia-related proteins, and the conventional risk factors of life-threatening coronary artery disease (CAD) to find more precise novel biomarkers. : Patients were categorized based on coronary CT angiography. Patients with a Segment Involvement Score > 5 were identified as CAD patients.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!