Transcriptomic and Metabolic Analysis of Fruit Development and Identification of Genes Involved in Raffinose and Hydrolysable Tannin Biosynthesis in Walnuts.

Walnut (Juglans regia L.) is an important fruit tree with high nutrition in its nuts. Here, the development of walnut fruits was monitored, and nine biological samples at five developmental stages were collected and analyzed by transcriptomic and metabolic assays. Many phenolic metabolites accumulated in the peel of mature fruits, while lipids, carbohydrates, and amino acids […]

Aggressiveness of Spanish isolates of Xylella fastidiosa to almond plants of different cultivars under greenhouse conditions

The aggressiveness of Spanish isolates of X. fastidiosa, representing different sequence types, were studied in almond plants of several cultivars by means of the dynamics of the population levels and symptoms, colonization and spread, and dose-response relationships. Pathogen dynamics in almond plants under greenhouse conditions showed doubling times of 2.1 to 2.5 days during the […]

Isolation and Identification of Endophytic Bacteria with Plant Growth Promoting Activity and Biocontrol Potential from Wild Pistachio Trees.

In this study, samples were collected from the leaves and stems of healthy wild Pistachio trees (Pistacia atlantica L.) from various locations of Baneh and Marivan regions, Iran. In total, 61 endophytic bacteria were isolated and grouped according to phenotypic properties. Ten selected isolates from each group were further identified by partial sequencing of the 16S rRNA […]

Attachment and Survival of Escherichia coli O157: H7 on In-Shell Hazelnuts.

The multistate Escherichia coli (E. coli) O157:H7 outbreak associated with in-shell hazelnuts highlights the pathogen's ability to involve non-traditional vehicles in foodborne infections. Furthermore, it underscores significant gaps in our knowledge of pathogen survivability and persistence on nuts. Therefore, this study investigated the ability of E. coli O157:H7 to attach and survive on in-shell hazelnuts. In-shell hazelnuts were inoculated with a four-strain mixture of E. […]

Influence of controlled atmosphere on thermal inactivation of Escherichia coli ATCC 25922 in almond powder.

Heat controlled atmosphere (CA) treatments hold potential to pasteurize Salmonella enteritidis PT 30 in almonds. Nonpathogenic Escherichia coli ATCC 25922 was used as a surrogate species of pathogenic Salmonella for validation of thermal pasteurization to meet critical safety requirements. A controlled atmosphere/heating block system (CA-HBS) was used to rapidly determine thermal inactivation of E. coli […]

The Bacteriological Quality of Retail-Level Peanut; Almond; Cashew; Hazelnut; Brazil; and Mixed Nut Kernels Produced in Two Australian Nut-Processing Facilities over a Period of 3 Years

An investigation of the bacteriological quality of ready-to-eat peanuts; almonds; cashews; hazelnuts; and Brazil nuts processed in two Australian nut-processing facilities was performed over a period of 3 years. A total of 564 ready-to-eat retail packs were analyzed for aerobic plate count (APC); Salmonella; coagulase-positive staphylococci; Listeria monocytogenes; and Escherichia coli. Of these samples; 343 […]