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With one volume each year, this series keeps scientists and advanced students informed of the latest developments and results in all areas of the plant sciences. This latest volume includes reviews on plant physiology, biochemistry, genetics and genomics, forests, and ecosystems.

This book focuses on quinoa, providing background information on its history, summarizing recent genetic and genomic advances, and offering directions for future research. Meeting the caloric and nutritional demands of our growing population will not only require increases in overall food production, but also the development of new crops that can be grown sustainably in agricultural environments that are increasingly susceptible to degradation. Quinoa is an ancient crop native to the Andean region of South America that has recently gained international attention because its seeds are high in protein, particularly in essential amino acids. Quinoa is also highly tolerant of abiotic stresses, including drought, frost and salinity. For these reasons, quinoa has the potential to help address issues of food security – a potential that was recognized when the United Nations declared 2013 the International Year of Quinoa. However, more effort is needed to improve quinoa agronomically and to understand the mechanisms of its abiotic stress tolerance; the recent development of genetic and genomic tools, including a reference genome sequence, will now help accelerate research in these areas.

This book on lupin genomics primarily focuses on the narrow-leafed lupin (NLL), and details the genomic resources that have been developed and how they are currently being used to help advance both fundamental and applied research on NLL in areas ranging from its domestication to plant–microbe interactions and syntenic relationships between NLL and other legume crops. It also reports on genomic efforts being pursued with regard to other lupin crops.Lupins are important ecological ‘engineers': they can colonise and thrive in low-nutrient soils due to their ability to fix atmospheric nitrogen in symbiosis with bacteria and efficiently take up phosphorous. Recently, lupins have attracted considerable interest, not only because of their value for sustainable farming as a break crop, but also as a potential ‘super food'for fighting major health issues in connection with diabetes and obesity.Narrow-leafed lupin is the main grain legume crop, grown primarily in Australia, and was therefore selected for the development of a reference lupin genome and associated genomic resources. Its genome has recently been sequenced with a focus on the gene-rich space, which has advanced the development of new breeding tools for the improvement of NLL and related lupin crops.

This book provides an introduction to the genetics, genomics, and breeding of the olive tree, a multi-functional long-lived crop plant that is relevant not only for culinary olive and oil production, but also for shaping the landscape and history of many rural areas for centuries. Today, the recognized health benefits of extra-virgin olive oil provide new impulses for introducing innovation in olive crop management and olive breeding for a deeper understanding of the biological processes underlying fruit quality, adaptation to crop environment and response to threatening epidemics due to biological agents such as Xylella fastidiosa.The individual chapters discuss genetic resources; classic and modern breeding methods for providing new olive cultivars; the genotype x environment interactions determining the response to biotic and abiotic stresses; fruit metabolism related to oil production and the synthesisof health beneficial molecules; the mapping of genes and quantitative trait locus; and genomic, transcriptomic and proteomic strategies pertinent to the development of a molecular platform and template amenable to precise and rapid genetic modifications using recently developed genome editing tools.

Polyploidy – whole-genome duplication (WGD) – is a fundamental driver of biodiversity with significant consequences for genome structure, organization, and evolution. Once considered a speciation process common only in plants, polyploidy is now recognized to have played a major role in the structure, gene content, and evolution of most eukaryotic genomes. In fact, the diversity of eukaryotes seems closely tied to multiple WGDs. Polyploidy generates new genomic interactions – initially resulting in “genomic and transcriptomic shock” – that must be resolved in a new polyploid lineage. This process essentially acts as a “reset” button, resulting in genomic changes that may ultimately promote adaptive speciation. This book brings together for the first time the conceptual and theoretical underpinnings of polyploid genome evolution with syntheses of the patterns and processes of genome evolution in diverse polyploid groups. Because polyploidy is most common and best studied in plants, the book emphasizes plant models, but recent studies of vertebrates and fungi are providing fresh perspectives on factors that allow polyploid speciation and shape polyploid genomes. The emerging paradigm is that polyploidy – through alterations in genome structure and gene regulation – generates genetic and phenotypic novelty that manifests itself at the chromosomal, physiological, and organismal levels, with long-term ecological and evolutionary consequences.