Article
Genetics & Heredity
Alexandra K. Fraik, John R. McMillan, Martin Liermann, Todd Bennett, Michael L. McHenry, Garrett J. McKinney, Abigail H. Wells, Gary Winans, Joanna L. Kelley, George R. Pess, Krista M. Nichols
Summary: The study examined the impacts of dam removal on the population genetics of O. mykiss in the Elwha River, finding that genetic structure decreased and admixture increased after dam removal. Despite significant population declines, no shifts in population genetic diversity or allele frequencies of loci putatively involved in migratory phenotypic variation were detected.
Article
Fisheries
Heidi Mathiessen, Yajiao Duan, Moonika H. Marana, Shaozhi Zuo, Asma M. Karami, Rzgar Jafaar, Louise von Gersdorff Jorgensen, Per W. Kania, Inger Dalsgaard, Lone Madsen, Torben Nielsen, Fabian Grammes, Jorgen odegard, Valeria Macchia, Kurt Buchmann
Summary: Flavobacterium psychrophilum is the causative agent of Bacterial Cold Water Disease (BCWD)/ Rainbow Trout Fry Syndrome (RTFS) in rainbow trout. The disease causes significant mortality in trout farms and leads to economic losses in the aquaculture industry. The immature development of adaptive immunity in young life cycle stages hinders successful vaccination, resulting in the widespread use of antibiotics. Selective breeding and identification of markers associated with disease resistance may improve breeding efforts for more resilient strains.
AQUACULTURE REPORTS
(2023)
Article
Biotechnology & Applied Microbiology
Bernat Morro, Richard Broughton, Pablo Balseiro, Sigurd O. Handeland, Simon Mackenzie, Mary K. Doherty, Phillip D. Whitfield, Munetaka Shimizu, Marnix Gorissen, Harald Sveier, Amaya Albalat
Summary: The study found that growth stunting in seawater-transferred rainbow trout is mainly caused by a significant downregulation in plasma IGF-I and liver igf1 transcription, while changes in the liver proteome suggest reactive-oxygen-species-mediated endoplasmic reticulum stress as a key mechanism underlying the phenotype. Lipidomic analysis revealed a reduction in triacylglycerols and elevated amounts of cardiolipins, a characteristic lipid class associated with oxidative stress, in the growth stunting phenotype.
Article
Plant Sciences
Xuejun Zhang, Yueming Ling, Wenli Yang, Minghua Wei, Zhenzhu Wang, Meihua Li, Yong Yang, Bin Liu, Hongping Yi, Yang-Dong Guo, Qiusheng Kong
Summary: This study constructed two F-2 populations using the DM-resistant accession PI 442177 and mapped QTLs conferring DM resistance. A high-density genetic map was generated and a major QTL DM9.1 was consistently detected at different growth stages. QTL-seq analysis validated the presence of DM9.1 and a KASP marker co-segregating with DM9.1 was successfully developed, providing valuable information for DM-resistant gene cloning and melon DM-resistant breeding programs.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
John Carlos I. Ignacio, Maricris Zaidem, Carlos Casal, Shalabh Dixit, Tobias Kretzschmar, Jaime M. Samaniego, Merlyn S. Mendioro, Detlef Weigel, Endang M. Septiningsih
Summary: The study focused on genetic basis of tolerance to anaerobic germination (AG) in the landrace ASD1 from India, identifying two significant quantitative trait loci (QTLs) on chromosomes 7 and 9 (qAG7 and qAG9) using RAD-seq technology and high-density SNP markers. This high-resolution genetic linkage map may aid in further dissecting the genetic factors of these QTLs.
Article
Ecology
Catherine I. I. Clare, Krista M. M. Nichols, Frank P. P. Thrower, Ewann A. A. Berntson, Matthew C. C. Hale
Summary: Rainbow trout exhibit different migratory behaviors, and this study used whole-genome sequencing to explore the genetic architecture of migratory and resident populations. The results showed that there are multiple genes and alleles associated with migratory development, with a specific region on chromosome 8 playing a crucial role. However, the genetic effects in different populations varied, highlighting the importance of population-specific genetic factors. Conserving genetic diversity in migratory individuals is essential for the conservation of these populations.
ECOLOGY AND EVOLUTION
(2023)
Article
Plant Sciences
Rasyidah M. Razar, Peng Qi, Katrien M. Devos, Ali M. Missaoui
Summary: Genetic diversity in switchgrass germplasm can be used to increase biomass yield. The study analyzed polymorphism and segregation distortion in two F1 populations and identified QTL for biomass yield. The results showed the presence of QTL in both populations, which explained a significant portion of the phenotypic variation.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Wenchong Chen, Weiwu Yu, Ang Dong, Yanru Zeng, Huwei Yuan, Bingsong Zheng, Rongling Wu
Summary: This study utilizes advanced genotyping technologies to investigate the genetic structure of Torreya grandis, a species with high economic and ornamental values. A high-density linkage map is constructed, and the results suggest that the identified QTLs are relatively young and can be better utilized through clonal propagation.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Harjot Singh Sohi, Manav Indra Singh Gill, Parveen Chhuneja, Naresh Kumar Arora, Sukhjinder Singh Maan, Jagmohan Singh
Summary: In this study, high leaf-anthocyanin reflective-index (ARI1) content cultivars of guava were developed through hybridization and a genetic linkage map was established. A marker closely associated with leaf anthocyanin content was identified.
Article
Fisheries
Marissa Giroux, Daniel Schlenk
Summary: Climate change in the San Francisco Bay Delta is causing warmer waters and saltwater intrusion, adversely affecting the survival and acclimation of rainbow trout juveniles. Higher temperatures and exposure to seawater challenge resulted in decreased survival rates and condition factor, as well as changes in gene expression and hormone levels.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Plant Sciences
Xueqian Jiang, Tianhui Yang, Fan Zhang, Xijiang Yang, Changfu Yang, Fei He, Ruicai Long, Ting Gao, Yiwei Jiang, Qingchuan Yang, Zhen Wang, Junmei Kang
Summary: This study used high-density linkage maps to dissect the genetic mechanism of flowering time in alfalfa, and identified candidate genes associated with flowering time. These findings are of great significance for breeding studies on alfalfa.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Ting Wang, Fu Xu, Zhoutao Wang, Qibin Wu, Wei Cheng, Youxiong Que, Liping Xu
Summary: In this study, phenotypic data of 285 F-1 progenies from a cross of sugarcane varieties were collected to investigate the tillering and ratooning traits. The results showed that both traits had medium to medium-high heritability and were positively correlated. Furthermore, a total of 26 QTLs related to tillering and 11 QTLs associated with ratooning were identified, along with 25 candidate genes. These findings provide valuable information for genetic improvement of tillering and ratooning traits in sugarcane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Jun Sun, Zhe Liu, Jinqiang Quan, Lanlan Li, Guiyan Zhao, Junhao Lu
Summary: In this study, RNA transcriptome sequencing technology (RNA-Seq) and genomic information were used to identify alternative splicing events in rainbow trout, revealing a large number of differential alternative splicing events and differentially expressed genes under heat stress. Gene ontology and pathway enrichment analysis showed the gene expression characteristics of rainbow trout under heat stress. The results were validated by qRT-PCR, confirming the reliability of the bioinformatics analysis.
MARINE BIOTECHNOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Vanessa Viterbo Velasco, Takayuki Ochiai, Masaoki Tsudzuki, Naoki Goto, Akira Ishikawa
Summary: Understanding the genetic mechanisms underlying innate fear behavior has important implications for the poultry industry. This study identified significant QTL associated with innate fear responses in chickens, providing valuable insights for improving management and breeding strategies.
Article
Plant Sciences
Samuel Daniel Lup, Carla Navarro-Quiles, Jose Luis Micol
Summary: Mapping-by-sequencing combines NGS with classical genetic mapping to establish gene-to-phenotype relationships. Easymap v.2 is a versatile tool that automates mapping of mutations and DNA insertions, and includes workflows for QTL-seq and variant density mapping analyses.
FRONTIERS IN PLANT SCIENCE
(2023)
