Developmental Transitions to Fruiting in Red Raspberry

Abstract. Establishing new social relationships is important for mastering developmental transitions in young adulthood. In a 2-year longitudinal study with four measurement occasions (T1: n = 245, T2: n = 96, T3: n = 103, T4: n = 85), we investigated the role of social motives in college students’ mastery of the transition of moving out of the parental home, using loneliness as an indicator of poor adjustment to the transition. Students with strong social approach motivation reported stable and low levels of loneliness. In contrast, students with strong social avoidance motivation reported high levels of loneliness. However, this effect dissipated relatively quickly as most of the young adults adapted to the transition over a period of several weeks. The present study also provides evidence for an interaction between social approach and social avoidance motives: Social approach motives buffered the negative effect on social well-being of social avoidance motives. These results illustrate the importance of social approach and social avoidance motives and their interplay during developmental transitions.

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Impact of an Open Trellis on Canopy Growth, Light Interception, Yield, and Leaf Physiology of Red Raspberry (Rubus idaeus)

HortScience ◽

10.21273/hortsci.33.3.468b ◽

1998 ◽

Vol 33 (3) ◽

pp. 468b-468

Author(s):

Stephen F. Klauer ◽

J. Scott Cameron ◽

Chuhe Chen

Keyword(s):

Leaf Area ◽

Total Nitrogen ◽

Dry Weight ◽

Light Interception ◽

Rubus Idaeus ◽

Above Ground Biomass ◽

Red Raspberry ◽

Leaf Physiology ◽

Total Dry Weight ◽

Upper Third

After promising results were obtained with an open-style split trellis (two top wires) in its initial year, two new trials were established in 1997 in northwest (Lynden) and southwest (Woodland) Washington. For the split trellis, actual yields were 33% (machine-picked 1/2 season) and 17% (hand-picked) greater, respectively, for the two locations compared to the conventional trellis (one top wire). In Woodland, canes from the split trellis had 33% more berries, 55% more laterals, 69% more leaves, and 25% greater leaf area compared with the conventional trellis. Greatest enhancement of these components was in the upper third of the canopy. Laterals were also shorter in this area of the split canopy, but there was no difference in average total length of lateral/cane between trellis types. Total dry weight/cane was 22% greater in the split trellis, but component partitioning/cane was consistent between the two systems with fruit + laterals (43%) having the greatest above-ground biomass, followed by the stem (30% to 33%) and the leaves (21% to 22%). Measurement of canopy width, circumference, and light interception showed that the split-trellis canopy filled in more quickly, and was larger from preanthesis through postharvest. Light interception near the top of the split canopy was 30% greater 1 month before harvest with 98% interception near the top and middle of that canopy. There was no difference between the trellis types in leaf CO2 assimilation, spectra, or fluorescence through the fruiting season, or in total nitrogen of postharvest primocane leaves.

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Living in dual liminal states: Navigating the loss of my father and my clinical career during a pandemic

Qualitative Social Work ◽

10.1177/1473325020973346 ◽

2021 ◽

Vol 20 (1-2) ◽

pp. 138-141

Author(s):

Jennifer Currin-McCulloch

Keyword(s):

Palliative Care ◽

Social Interaction ◽

Social Worker ◽

Rites Of Passage ◽

Developmental Transitions ◽

The World ◽

Professional Conflicts ◽

The Voice ◽

Insight Into

Drawing from Van Gennep and Caffee’s conceptualization of liminality, this autoethnographic narrative portrays the author’s rites of passage into academia and through the death of her father. These fundamental developmental transitions and losses emerged concomitantly within the backdrop of a pandemic, further cloaking the world in grief and disequilibrium. Incorporating the voice of the personal as professional, the author portrays her existential struggles in relinquishing her cherished role as a palliative care social worker and living through her dad’s final months during a time of restricted social interaction. Interwoven throughout the narrative appear stories of strife, hope, grief, and professional epiphanies of purpose and insider privilege. The paper embraces both personal and professional conflicts and provides insight into the ways in which the unique setting of a pandemic can provide clarity for navigating the liminal states of separation, transition, and incorporation.

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Genome-Wide Association Study (GWAS) for Examining the Genomics Controlling Prickle Production in Red Raspberry (Rubus idaeus L.)

Agronomy ◽

10.3390/agronomy11010027 ◽

2020 ◽

Vol 11 (1) ◽

pp. 27

Author(s):

Archana Khadgi ◽

Courtney A. Weber

Keyword(s):

Association Study ◽

Genome Wide Association Study ◽

Genomic Region ◽

Rubus Idaeus ◽

Genome Wide Association ◽

Nucleotide Polymorphisms ◽

Red Raspberry ◽

Genome Wide ◽

A Genome ◽

Genotype By Sequencing

Red raspberry (Rubus idaeus L.) is an expanding high-value berry crop worldwide. The presence of prickles, outgrowths of epidermal tissues lacking vasculature, on the canes, petioles, and undersides of leaves complicates both field management and harvest. The utilization of cultivars with fewer prickles or prickle-free canes simplifies production. A previously generated population segregating for prickles utilizing the s locus between the prickle-free cultivar Joan J (ss) and the prickled cultivar Caroline (Ss) was analyzed to identify the genomic region associated with prickle development in red raspberry. Genotype by sequencing (GBS) was combined with a genome-wide association study (GWAS) using fixed and random model circulating probability unification (FarmCPU) to analyze 8474 single nucleotide polymorphisms (SNPs) and identify significant markers associated with the prickle-free trait. A total of four SNPs were identified on chromosome 4 that were associated with the phenotype and were located near or in annotated genes. This study demonstrates how association genetics can be used to decipher the genetic control of important horticultural traits in Rubus, and provides valuable information about the genomic region and potential genes underlying the prickle-free trait.

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Integrating animal development: How hormones and metabolism regulate developmental transitions and brain formation

Developmental Biology ◽

10.1016/j.ydbio.2021.01.016 ◽

2021 ◽

Author(s):

Andreia C. Oliveira ◽

Ana R. Rebelo ◽

Catarina C.F. Homem

Keyword(s):

Developmental Transitions ◽

Animal Development

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Recovery of Unicellular Cyanobacteria from Nitrogen Chlorosis: A Model for Resuscitation of Dormant Bacteria

Microbial Physiology ◽

10.1159/000515742 ◽

2021 ◽

pp. 1-10

Author(s):

Niels Neumann ◽

Sofia Doello ◽

Karl Forchhammer

Keyword(s):

Nitrogen Starvation ◽

Oxygenic Photosynthesis ◽

Cellular Activity ◽

Input Output ◽

Minimal Set ◽

Operation System ◽

Developmental Transitions ◽

The Awakening ◽

Output System ◽

Basic Input

Nitrogen starvation induces developmental transitions in cyanobacteria. Whereas complex multicellular cyanobacteria of the order Nostocales can differentiate specialized cells that perform nitrogen fixation in the presence of oxygenic photosynthesis, non-diazotrophic unicellular strains, such as <i>Synechococcus elongatus</i> or <i>Synechocystis</i> PCC 6803, undergo a transition into a dormant non-growing state. Due to loss of pigments during this acclimation, the process is termed chlorosis. Cells maintain viability in this state for prolonged periods of time, until they encounter a useable nitrogen source, which triggers a highly coordinated awakening process, termed resuscitation. The minimal set of cellular activity that maintains the viability of cells during chlorosis and ensures efficient resuscitation represents the organism’s equivalent of the BIOS, the basic input/output system of a computer, that helps “booting” the operation system after switching on. This review summarizes the recent research in the resuscitation of cyanobacteria, representing a powerful model for the awakening of dormant bacteria.

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Combining QTL Mapping and Gene Expression Analysis to Elucidate the Genetic Control of ‘Crumbly’ Fruit in Red Raspberry (Rubus idaeus L.)

Agronomy ◽

10.3390/agronomy11040794 ◽

2021 ◽

Vol 11 (4) ◽

pp. 794

Author(s):

Luca M. Scolari ◽

Robert D. Hancock ◽

Pete E. Hedley ◽

Jenny Morris ◽

Kay Smith ◽

...

Keyword(s):

Genetic Control ◽

Developmental Disorder ◽

Molecular Mechanisms ◽

Developmental Stages ◽

Microarray Experiment ◽

Rubus Idaeus ◽

Red Raspberry ◽

Genotype By Sequencing ◽

First Time ◽

Selection Of

‘Crumbly’ fruit is a developmental disorder in raspberry that results in malformed and unsaleable fruits. For the first time, we define two distinct crumbly phenotypes as part of this work. A consistent crumbly fruit phenotype affecting the majority of fruits every season, which we refer to as crumbly fruit disorder (CFD) and a second phenotype where symptoms vary across seasons as malformed fruit disorder (MFD). Here, segregation of crumbly fruit of the MFD phenotype was examined in a full-sib family and three QTL (Quantitative Trait Loci) were identified on a high density GbS (Genotype by Sequencing) linkage map. This included a new QTL and more accurate location of two previously identified QTLs. A microarray experiment using normal and crumbly fruit at three different developmental stages identified several genes that were differentially expressed between the crumbly and non-crumbly phenotypes within the three QTL. Analysis of gene function highlighted the importance of processes that compromise ovule fertilization as triggers of crumbly fruit. These candidate genes provided insights regarding the molecular mechanisms involved in the genetic control of crumbly fruit in red raspberry. This study will contribute to new breeding strategies and diagnostics through the selection of molecular markers associated with the crumbly trait.

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Substance Use and Peers During Adolescence and the Transition to Adulthood

10.1093/oxfordhb/9780199381678.013.004 ◽

2014 ◽

Author(s):

Megan E. Patrick ◽

John E. Schulenberg ◽

Jennifer Maggs ◽

Julie Maslowsky

Keyword(s):

Substance Use ◽

Peer Relationships ◽

Social Relationships ◽

Transition To Adulthood ◽

Peer Relations ◽

Peer Groups ◽

Social Contexts ◽

Cigarette Use ◽

Developmental Transitions ◽

Wide Range

This chapter summarizes recent literature concerning the connection between peers and substance use (i.e., alcohol use, cigarette use, and illicit drug use) during adolescence and the transition to adulthood. The broad category of peers consists of a wide range of social relationships including best friends, peer groups, and crowds; important aspects include peer activities, relationships, and influence. Young people both select their friends (e.g., based on shared interests) and are influenced, or socialized, by their selected peers. When examining the dynamic periods of life that cover the transitions into, through, and out of adolescence and into the post-high school years, selection and socialization are especially important, given that many transitions involve changes in social contexts and peer relationships. The authors take a developmental perspective by focusing on the developmental transitions that occur during adolescence and the transition to adulthood and how they influence peer relations and substance use.

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