The majority of switchgrass cultivars, including lowland and upland ecotypes, have been shown to be moderate to highly susceptible to this rust pathogen. The causal agent of switchgrass rust, Puccinia emaculata Schw., is widespread and has been reported in Tennessee, Arkansas, Virginia, and Mississippi. Airborne foliar fungal pathogens, like switchgrass rust, have potential to cause nationwide epidemics on switchgrass and have been shown to cause significant biomass yield losses. However, this practice is likely to reduce the genetic diversity in switchgrass that promotes disease resistance. Ĭurrently, industrial scale breeding programs of switchgrass have focused on optimizing biomass yield and improving feedstock quality in order to produce more biofuel. Lowland ecotypes also typically produce more biomass and are more tolerant to diseases than their upland counterparts however, upland ecotypes are considered to be more tolerant to drought and cold stresses. Lowland ecotypes are generally tetraploid in nature and grow in warm, moist, southern climates whereas upland ecotypes of switchgrass can be tetraploid, hexaploid, or octoploid and are usually found growing in the northern part of the United States into southern Canada. Two ecotypes of switchgrass, lowland and upland, have emerged that are adapted to different growth habitats. As a readily outcrossing species, native switchgrass germplasms have maintained a high level of genetic diversity over time. Switchgrass ( Panicum virgatum L.) is a North American prairie grass that can be used as a second generation bioenergy feedstock. The phylogenetic tree generated in this study has been uploaded to TreeBASE, submission number 19789. All switchgrass flag leaf data are available at NCBI Biosample accession number: SRX481052. Functional & Integrative Genomics 15: 1-16. Switchgrass ( Panicum virgatum L) flag leaf transcriptomes reveal molecular signatures of leaf development, senescence, and mineral dynamics. The phylogenetic tree generated in this study has been deposited in TreeBASE (Submission 19789) and can be accessed at the following URL. In addition, the RNA-seq datasets used in this article have been deposited in the GenBank database and can be found under the following accession numbers: SRR3473343, SRR3473344, SRR3467193, SRR3467194, SRR3467195, SRR3467196, SRR3467197 and SRR3467198. The data and datasets supporting the conclusions of this article are included within the article and its supplemental files. Associated Data Data Availability Statement
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |