Phenotypic diversity and population structure of Pecan (Carya illinoinensis) collections reveals geographic patterns.

Pecan (Carya illinoinensis) is an economically important nut crop known for its genetic diversity and adaptability to various climates. Understanding the growth variability, phenological traits, and population structure of pecan populations is crucial for breeding programs and conservation. In this study, plant growth and phenological traits were evaluated over three consecutive seasons (2015-2017) for 550 genotypes from 26 provenances.

Transcriptome profile of pecan scab resistant and susceptible trees from a pecan provenance collection.

Pecan scab is a devastating disease that causes damage to pecan (Carya illinoinensis (Wangenh.) K. Koch) fruit and leaves.

Standard Area Diagrams for Pecan Leaf Scab: Effect of Rater Experience, Location, and Leaf Size on Reliability and Accuracy of Visual Estimates.

Assessments of the severity of scab (), an economically significant disease of pecan, are critical for determining pecan cultivar susceptibility, disease epidemiology, and integrated disease management approaches. We developed a standard area diagram (SAD) set to aid in assessments of pecan leaflet scab. Leaflets with scab lesions were harvested and scanned using a flatbed scanner at 600 dpi, and Fiji (ImageJ) was used to determine the actual percent disease severity.

Centering Justice in Health Professions Education by Owning Limitations of Anti-Bias Checklists.

This article argues that, although efforts to integrate checklists for assessing bias in educational content represent a sincere effort to address or mitigate harm, such efforts will likely have limited (if any) impact on curricular reform or the actual lived experiences of minoritized students. This is because checklists are not designed for justice-oriented assessment and thus will not create the kind of change needed to transform health professions, especially medical education. What is needed is more attention to the ways whiteness is used to organize health professions education and a deep commitment to faculty development focused on raising educators' critical consciousness.

Proteomic Analysis of Pecan () Nut Development.

Pecan () nuts are an economically valuable crop native to the United States and Mexico. A proteomic summary from two pecan cultivars at multiple time points was used to compare protein accumulation during pecan kernel development. Patterns of soluble protein accumulation were elucidated using qualitative gel-free and label-free mass-spectrometric proteomic analyses and quantitative (label-free) 2-D gel electrophoresis.

Comparative transcriptome analyses reveal insights into catkin bloom patterns in pecan protogynous and protandrous cultivars.

In perennial plants such as pecan, once reproductive maturity is attained, there are genetic switches that are regulated and required for flower development year after year. Pecan trees are heterodichogamous with both pistillate and staminate flowers produced on the same tree. Therefore, defining genes exclusively responsible for pistillate inflorescence and staminate inflorescence (catkin) initiation is challenging at best.

Influence of Geographical Orchard Location on the Microbiome from the Progeny of a Pecan Controlled Cross.

(Wangenh.) K.Koch production has expanded beyond the native distribution as the genetic diversity of the species, in part, has allowed the trees to grow under broad geographic and climatic ranges.

Population Genetic Characteristics and Mating Type Frequency of from Pecan in South America.

Scab, caused by the plant-pathogenic fungus , is a major disease of pecan in South America, resulting in loss of quantity and quality of nut yield. Characteristics of the populations of in South America are unknown. We used microsatellites to describe the genetic diversity and population structure of in South America, and determined the mating type status of the pathogen.

Evidence for Seed Transmission of in Pecan ().

Pecan bacterial leaf scorch, caused by subsp. , is an economically significant disease of pecan with known detrimental effects on the yield of susceptible cultivars. In this study, endosperm was harvested from developing pecan seeds, and direct qPCR and sequencing were used to detect and confirm the presence of .

Four chromosome scale genomes and a pan-genome annotation to accelerate pecan tree breeding.

Genome-enabled biotechnologies have the potential to accelerate breeding efforts in long-lived perennial crop species. Despite the transformative potential of molecular tools in pecan and other outcrossing tree species, highly heterozygous genomes, significant presence-absence gene content variation, and histories of interspecific hybridization have constrained breeding efforts. To overcome these challenges, here, we present diploid genome assemblies and annotations of four outbred pecan genotypes, including a PacBio HiFi chromosome-scale assembly of both haplotypes of the 'Pawnee' cultivar.

Functional Genomics Insights Into the Pathogenicity, Habitat Fitness, and Mechanisms Modifying Plant Development of sp. PBTS1 and PBTS2.

Pistachio Bushy Top Syndrome (PBTS) is a recently emerged disease that has strongly impacted the pistachio industry in California, Arizona, and New Mexico. The disease is caused by two bacteria, designated PBTS1 that is related to and PBTS2 that belongs to the species . Here, we assessed the pathogenic character of the causative agents and examined their chromosomal sequences to predict the presence of particular functions that might contribute to the observed co-occurrence and their effect on plant hosts.

The genomes of pecan and Chinese hickory provide insights into Carya evolution and nut nutrition.

Background: Pecan (Carya illinoinensis) and Chinese hickory (C. cathayensis) are important commercially cultivated nut trees in the genus Carya (Juglandaceae), with high nutritional value and substantial health benefits.

Results: We obtained >187.

Hardwood Tree Genomics: Unlocking Woody Plant Biology.

Woody perennial angiosperms (i.e., hardwood trees) are polyphyletic in origin and occur in most angiosperm orders.

Comment on "Evolutionary transitions between beneficial and phytopathogenic challenge disease management".

We would like to address a number of concerns regarding this paper (Savory et al., 2017).

Complete Genome and Plasmid Sequences for Rhodococcus fascians D188 and Draft Sequences for Rhodococcus Isolates PBTS 1 and PBTS 2.

Rhodococcus fascians, a phytopathogen that alters plant development, inflicts significant losses in plant production around the world. We report here the complete genome sequence of R. fascians D188, a well-characterized model isolate, and Rhodococcus species PBTS (pistachio bushy top syndrome) 1 and 2, which were shown to be responsible for a disease outbreak in pistachios.

Phytophthora Species in Rivers and Streams of the Southwestern United States.

Unlabelled: Phytophthora species were isolated from rivers and streams in the southwestern United States by leaf baiting and identified by sequence analysis of internal transcribed spacer (ITS) ribosomal DNA (rDNA). The major waterways examined included the Rio Grande River, Gila River, Colorado River, and San Juan River. The most prevalent species identified in rivers and streams were Phytophthora lacustris and P.

First Report of Rhodococcus Isolates Causing Pistachio Bushy Top Syndrome on 'UCB-1' Rootstock in California and Arizona.

'UCB-1' (Pistacia atlantica × Pistacia integerrima) rootstock is a hybrid cultivar widely used by the U.S. pistachio industry.

BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper (Capsicum annuum).

Induced resistance in plants is a systemic response to certain microorganisms or chemicals that enhances basal defense responses during subsequent plant infection by pathogens. Inoculation of chile pepper with zoospores of non-host Phytophthora nicotianae or the chemical elicitor beta-aminobutyric acid (BABA) significantly inhibited foliar blight caused by Phytophthora capsici. Tissue extract analyses by GC/MS identified conserved change in certain metabolite concentrations following P.

Dodecaphony: enacting support brokerage in the twelve cash & counseling expansion states.

Support brokers are entities that provide information and assistance to self-directed clients in Medicaid waiver programs. Although all Cash & Counseling programs have support brokerage, each state has a great deal of liberty in determining how those functions are carried out, who provides those activities, which functions are emphasized and how responsibility for support broker tasks coordinates with other support activities. In this article, we map out the various ways in which states have operationalized the support brokerage concept.

Tobacco dependence treatment for hospitalized smokers: a randomized, controlled, pilot trial using varenicline.

Objective: The hospital can be an important opportunity for smoking cessation interventions. This is the first randomized, double-blinded, placebo-controlled pilot trial utilizing varenicline and post-discharge, in-person behavioral treatment for hospitalized smokers.

Method: Seventy-nine smokers admitted to a university-based hospital with various diagnoses were enrolled from 2007 to 2009.

Using Guttman's mapping sentences and Many Facet Rasch Measurement Theory to develop an instrument that examines the grading philosophies of teachers.

This study presents an approach to questionnaire design within educational research based on Guttman's mapping sentences (Guttman, 1977) and Many-Facet Rasch Measurement Theory (Linacre, 1994). The primary purpose of this study was to illustrate how Guttman's mapping sentences can be used to develop an instrument that explores the grading philosophies of teachers. A secondary purpose was to clarify teacher grading philosophies (i.

Genetic analysis of a novel Xylella fastidiosa subspecies found in the southwestern United States.

Xylella fastidiosa, the causal agent of several scorch diseases, is associated with leaf scorch symptoms in Chitalpa tashkentensis, a common ornamental landscape plant used throughout the southwestern United States. For a number of years, many chitalpa trees in southern New Mexico and Arizona exhibited leaf scorch symptoms, and the results from a regional survey show that chitalpa trees from New Mexico, Arizona, and California are frequently infected with X. fastidiosa.

BiP and zein binding domains within the delta zein protein.

Zeins are alcohol soluble seed storage proteins synthesized within the endosperm of maize and subsequently deposited into endoplasmic reticulum (ER) derived protein bodies. The genes encoding the beta and delta zeins were previously introduced into tobacco with the expectation of improving the nutritional quality of plants (Bagga et al. in Plant Physiol 107:13, 1997).