oxalate soluble pectin (osp) is related to fruit firmness with respect to the chelation of calcium ions with carboxyl groups of adjacent polyuronide chains. this study was carried out to explore the effect of time of fruit harvest, foliar spray with cacl2 during growing season on osp, polygalacturonase activity (pga), fruit firmness and the effects on fruit shelf life, quality and internal ...

Cylindrocarpon destructans isolated from ginseng field was found to produce pectinolytic enzymes. A Taguchi's orthogonal array experimental design was applied to optimize the preliminary production of polygalacturonase (PG) and pectin lyase (PL) using submerged culture condition. This method was applied to evaluate the significant parameters for the production of enzymes. The process variables ...

Background and aims: Colletotrichum graminicola (Glomerellaceae, Glomerellales), the causal agent of maize (Zea mays) anthracnose, as many other fungal pathogens, relies on its battery cell wall degrading enzymes (CWDEs) to make way through walls host, thus production these is considered a virulence factor. Since this disease relatively new in Argentina, little known about capacity CWDEs native...

Received 10/9/2010 Accepted 16/3/2012 (005048) 1 Laboratório de Enzimologia e Tecnologia de Fermentação, Departamento de Saúde, Universidade Estadual de Feira de Santana – UEFS, Av. Transnordestina, s/n, Novo Horizonte, CEP 44036-900, Feira de Santana, BA, Brasil, e-mail: [email protected] 2 Labotec, Departamento de Tecnologia, Universidade Estadual de Feira de Santana – UEFS, Av. Transnordes...

Thirty seven species of Fusarium were evaluated for their ability of producing extracellular enzymes using chromogenic medium containing substrates such as starch, cellobiose, CM-cellulose, xylan, and pectin. Among the tested species Fusarium mesoamericanum, F. graminearum, F. asiaticum, and F. acuminatum showed high β-glucosidase acitivity. Xylanase activity was strongly detected in F. prolife...

We have modified the flavor and aroma of tomatoes by expressing the Ocimum basilicum geraniol synthase gene under the control of the tomato ripening–specific polygalacturonase promoter. A majority of untrained taste panelists preferred the transgenic fruits over controls. Monoterpene accumulation was at the expense of reduced lycopene accumulation. Similar approaches may be applicable for carot...

Polygalacturonase-inhibiting proteins are leucine-rich repeat proteins that inhibit fungal endopolygalacturonases. The interaction of polygalacturonase-inhibiting protein with endopolygalacturonases limits the destructive potential of endopolygalacturonases and may trigger plant defense responses induced by oligogalacturonides. We examined the expression of fungal pg and plant Pvpgip genes in b...