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This book is the first comprehensive compilation of the most up-to-date research in the genomics, transcriptomics, and breeding of pine species across Europe, North America, and Australia. With chapters on the state of the reference genomes, transposon function, genome-wide diversity, functional genomics, genomics of disease resistance, genomics of abiotic stress, and genomic selection, this book is a must-read for scientists, breeders, and students of plant genomics. The book contains 12 chapters over 300 pages authored by a group of world-renowned scientists in the field of pine genomics. Pines (Pinus) are the world’s most economically important forest tree species. The recent genome sequencing of several important pine species has paved the way for understanding their complex biology and helps future management and breeding efforts.
This book is the first comprehensive volume on conifers detailing their genomes, variations, and evolution. The book begins with general information about conifers such as taxonomy, geography, reproduction, life history, and social and economic importance. Then topics discussed include the full genome sequence, complex traits, phenotypic and genetic variations, landscape genomics, and forest health and conservation. This book also synthesizes the research included to provide a bigger picture and suggest an evolutionary trajectory. As a large plant family, conifers are an important part of economic botany. The group includes the pines, spruces, firs, larches, yews, junipers, cedars, cypresses, and sequoias. Of the phylum Coniferophyta, conifers typically bear cones and evergreen leaves. Recently, there has been much data available in conifer genomics with the publication of several crop and non-crop genome sequences. In addition to their economic importance, conifers are an important habitat for humans and animals, especially in developing parts of the world. The application of genomics for improving the productivity of conifer crops holds great promise to help provide resources for the most needy in the world.
HiC-Pro is an optimized and flexible pipeline for processing Hi-C data from raw reads to normalized contact maps. HiC-Pro maps reads, detects valid ligation products, performs quality controls and generates intra- and inter-chromosomal contact maps. It includes a fast implementation of the iterative correction method and is based on a memory-efficient data format for Hi-C contact maps. In addition, HiC-Pro can use phased genotype data to build allele-specific contact maps. We applied HiC-Pro to different Hi-C datasets, demonstrating its ability to easily process large data in a reasonable time. Source code and documentation are available at http://github.com/nservant/HiC-Pro.
My research is focused on advancing understanding of the genomes of two important and distantly related conifer species, loblolly pine (Pinus taeda L.) and bald cypress (Taxodium distichum (L.) Rich. var. distichum). Loblolly pine is the most commercially important tree crop in the United States, the major source of pulpwood for paper manufacturing, a source of quality lumber, a prime bioenergy feedstock, and an important part of the ecosystem of the southeastern U.S. Bald cypress is the dominant tree species in the aptly named "cypress swamps" of the South. Its ecological importance to the wetlands of the southern U.S. is immeasurable. Moreover, bald cypress is a popular ornamental due to its attractive appearance and extreme resistance to pests, pathogens, and weather. Maintaining the security and productiveness of these important crop/forest species in the face of new pest, pathogen and environmental threats will require a better understanding of their genes and the structures of their genomes. We have conducted a study of loblolly pine and bald cypress in which Cot analysis and DNA sequencing of Cot-filtered DNA were utilized to study genome structure. Cot analysis revealed that loblolly pine and bald cypress genomes are each composed of three major kinetic components which we have deemed highly repetitive (HR), moderately repetitive (MR), and single/low copy (SL). In loblolly pine, the HR, MR, and SL components account for 57, 24, and 10%, of genomic DNA, respectively. Of note, 2.71 % of random genomic sequences (i.e., 580 Mb, an amount roughly three times that of the Arabidopsis genome) show significant (bit score>̲ 60) homology to mRNA sequences. This result suggests that the loblolly pine genome contains many genes or pseudogenes, and/or gene duplications. In bald cypress, the HR, MR, and SL components account for 52, 38, and 4%, of genomic DNA, respectively. Sample sequencing was performed only on the HR component of bald cypress; sequence analysis shows only 0.81% of HR sequence reads with homology to mRNA sequences. My research provides insight into the evolution of these distant conifers and key sequence data that should greatly facilitate ongoing molecular breeding programs.
This work is a comprehensive collection of articles that cover aspects of cell wall research in the genomic era. Some 2500 genes are involved in some way in wall biogenesis and turnover, from generation of substrates, to polysaccharide and lignin synthesis, assembly, and rearrangement in the wall. Although a great number of genes and gene families remain to be characterized, this issue provides a census of the genes that have been discovered so far. The articles comprising this issue not only illustrate the enormous progress made in identifying the wealth of wall-related genes but they also show the future directions and how far we have to go. As cell walls are an enormously important source of raw material, we anticipate that cell-wall-related genes are of significant economic importance. Examples include the modification of pectin-cross-linking or cell-cell adhesion to increase shelf life of fruits and vegetables, the enhancement of dietary fiber contents of cereals, the improvement of yield and quality of fibers, and the relative allocation of carbon to wall biomass for use as biofuels. The book is intended for academic and professional scientists working in the area of plant biology as well as material chemists and engineers, and food scientists who define new ways to use cell walls.
With contributions by internationally reputed researchers in the field, this book presents the implications of the genomic revolution for conifers-promoting a better understanding of the evolution of these organisms as well as new knowledge about the molecular basis of quantitative trait variation. Both of these discoveries play important roles in
Recent major advances in the field of comparative genomics and cytogenomics of plants, particularly associated with the completion of ambitious genome projects, have uncovered astonishing facets of the architecture and evolutionary history of plant genomes. The aim of this book was to review these recent developments as well as their implications in our understanding of the mechanisms which drive plant diversity. New insights into the evolution of gene functions, gene families and genome size are presented, with particular emphasis on the evolutionary impact of polyploidization and transposable elements. Knowledge on the structure and evolution of plant sex chromosomes, centromeres and microRNAs is reviewed and updated. Taken together, the contributions by internationally recognized experts present a panoramic overview of the structural features and evolutionary dynamics of plant genomes.This volume of Genome Dynamics will provide researchers, teachers and students in the fields of biology and agronomy with a valuable source of current knowledge on plant genomes.
Forest tree improvement has mainly been implemented to enhance the productivity of artificial forests. However, given the drastically changing global environment, improvement of various traits related to environmental adaptability is more essential than ever. This book focuses on genetic information, including trait heritability and the physiological mechanisms thereof, which facilitate tree improvement. Nineteen papers are included, reporting genetic approaches to improving various species, including conifers, broad-leaf trees, and bamboo. All of the papers in this book provide cutting-edge genetic information on tree genetics and suggest research directions for future tree improvement.