RESUMO
Rye (Secale cereale L.) is an exceptionally climate-resilient cereal crop, used extensively to produce improved wheat varieties via introgressive hybridization and possessing the entire repertoire of genes necessary to enable hybrid breeding. Rye is allogamous and only recently domesticated, thus giving cultivated ryes access to a diverse and exploitable wild gene pool. To further enhance the agronomic potential of rye, we produced a chromosome-scale annotated assembly of the 7.9-gigabase rye genome and extensively validated its quality by using a suite of molecular genetic resources. We demonstrate applications of this resource with a broad range of investigations. We present findings on cultivated rye's incomplete genetic isolation from wild relatives, mechanisms of genome structural evolution, pathogen resistance, low-temperature tolerance, fertility control systems for hybrid breeding and the yield benefits of rye-wheat introgressions.
Assuntos
Mapeamento Cromossômico/métodos , Genoma de Planta , Melhoramento Vegetal/métodos , Proteínas de Plantas/genética , Secale/genética , Triticum/genética , Adaptação Fisiológica/genética , Produtos Agrícolas/genética , Produtos Agrícolas/imunologia , Regulação da Expressão Gênica de Plantas , Introgressão Genética , Cariótipo , Imunidade Vegetal/genética , Proteínas de Plantas/metabolismo , Secale/imunologia , Estresse FisiológicoRESUMO
This article examines community-based ecological monitoring in Nova Scotia, with an emphasis on watershed stewardship groups. It discusses successes to date and future challenges, drawing on examples from the Atlantic Coastal Action Program (ACAP) and other community groups. The barriers to the generation of robust monitoring datasets and effective participation in watershed management are examined. The article concludes with a discussion of issues to be addressed to ensure that community groups can both gather scientifically valid ecological data and have meaningful input into the management of their local natural resources.