polygalacturonic acid/ジャガイモ

Sporamin and beta-amylase are two major proteins of tuberous storage root of sweet potato (Ipomoea batatas) and their accumulation can be induced concomitantly with the accumulation of starch in leaves and petioles by sucrose (K Nakamura, M Ohto, N Yoshida, K Nakamura [1991] Plant Physiol 96:

Cells of tumorigenic Agrobacterium tumefaciens strain B6 were labeled with [35S]methionine and used to estimate bacterial adsorption to potato tuber discs. After 10 min at pH 7.2, about 5 X 10(5) bacteria adsorb to each 9.0-mm disc. Lengthening the incubation period to 90 min increases adsorption to

The crispness of fruits and vegetables is dependent, predominantly, on the maintenance of cell adhesion. There is a growing body of evidence to suggest that cell adhesion in plants is controlled at the edge of cell faces rather than across the entire cell surface. The aim of the current study has

A nuclear AmyB gene from sweet potato encoding beta-amylase (beta Amy) that is abundant in tuberous roots and inducible in other organs by an exogenous supply of sucrose or polygalacturonic acid, was isolated and characterized. Genomic Southern blot hybridization, restriction maps of independently

Sporamin and beta-amylase are two major proteins of tuberous roots of sweet potato, and expression of genes coding for sporamin and beta-amylase is induced concomitantly in leaves with the petioles attached by exogenous supply of sucrose or polygalacturonic acid. We have used a DNase I footprinting

Cell wall materials (CWMs) from sweetpotato, cassava, and potato starch residues were degraded using a crude enzyme solution from the culture filtrate of a Bacillus sp. isolated from soil, Bacillus sp. M4. This organism has been found to secrete polygalacturonic acid lyase (PGL) and glycan

Different bacteria isolated from potato tubers were screened for their pectolytic properties by examining pitting in polypectate agar, recording conductance responses in polypectate medium and performing potato tuber soft rot tests. For bacteria found positive in conductimetry, the role of

A study on mass transfer using new coating materials (namely alginic acid and polygalacturonic acid) during osmotic dehydration-and hence in a laboratory-scale convective dryer to evaluate drying performance-was carried out. Potato and apple samples were examined as model heat-sensitive products in

Many filamentous fungi produce an array of extracellular enzymes that acting in cell walls release elicitors of the plant defense response These enzymes may therefore be important in biocontrol applications. The aim of this study was to characterize extracellular degradative enzymes produced by a

Galacturonic acid (GalUA) is a major component of pectin and polygalacturonic acid in the plant cell wall. In the phytopathogen Erwinia chrysanthemi, the uptake of molecules derived from degradation of these polymers is an important early step in the events preceding induction of pectinases,

DNA sequencing of the Agrobacterium vitis pehA gene revealed a predicted protein with an M(r) of 58,000 and significant similarity to the polygalacturonases of two other plant pathogens, Erwinia carotovora and Ralstonia (= Pseudomonas or Burkholderia) solanacearum. Sequencing of the N terminus of

The phytopathogenic enterobacterium Erwinia chrysanthemi contains pel genes encoding several different isozymes of the plant-tissue-disintegrating enzyme pectate lyase (PL). The pelC gene, encoding an isozyme with an approximate isoelectric point of 8.0, was mutagenized by a three-step procedure

The rough lemon (Citrus jambhiri) gene encoding polygalacturonase-inhibiting protein (RlemPGIPA) was overexpressed in the pathogenic fungus Alternaria citri. The overexpression mutant AcOPI6 retained the ability to utilize pectin as a sole carbon source, and the overexpression of

Erwinia chrysanthemi 3937 (Ech3937) is a phytopathogenic bacterium with a wide host range. The pectinolytic enzymes secreted by the bacterium and the type III secretion system (T3SS) are essential for full virulence. We used the green fluorescent protein gene as a reporter to investigate the

The in vitro phosphorylation by [gamma-32P]ATP of a 34-kDa plasma membrane-associated protein (pp34) from tomato and potato is strongly enhanced in the presence of alpha-1,4-D-polygalacturonic acid (PGA) fragments (Farmer, E. E., Pearce, G., and Ryan, C. A. (1989) Proc. Natl. Acad. Sci. U. S. A. 86,