Thesis - Open Access
Master of Science (MS)
Biology and Microbiology
senescence, switchgrass, transcriptome
Senescence of perennial crops enable continuous harvests after one sowing event. Perennials senesce at adapted rates of their native environments; however, early senescencing crops do not maximize the growing season as nutrient reallocation takes precedence. Chlorophyll degradation and nitrogen reallocation was observed to occur rapidly between mid to late September. Transcriptome analysis on early and late senescencing switchgrass cultivars reveals upregulation of starch metabolism, light reactions, Calvin-Benson Cycle, and anthocyanin synthesis in late senescencing switchgrass. Morphological variations between the two germplasms prolong the growing season of late senescencing switchgrass, maximizing yield. Expression of mRNA as senescence progresses and between the two genotypes reveals potential targets and genes of interest for crop breeding techniques to maximize the growing season of perennial crops, optimize nutrient reallocation, and enhance yield.
Library of Congress Subject Headings
Switchgrass -- Aging; Spartina -- Aging
Grasses -- Aging
Includes bibliographical references (page 66)
Number of Pages
South Dakota State University
Copyright © 2016 Michaellong Tran
Tran, Michaellong, "Senescence of Native Perennial Warm Season Grasses Senescence Associated Switchgrass Transcriptome" (2016). Electronic Theses and Dissertations. 978.