Dissertation/Thesis Abstract

Senescence of native perennial warm season grasses. senescence associated switchgrass transcriptome
by Tran, Michaellong, M.S., South Dakota State University, 2016, 81; 10109440
Abstract (Summary)

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.

Indexing (document details)
Advisor: Gonzalez-Hernandez, Jose L.
Commitee: Boe, Arvid, Rohila, Jai S.
School: South Dakota State University
Department: Plant Science
School Location: United States -- South Dakota
Source: MAI 55/04M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Plant sciences, Physiology
Keywords: Senescence, Switchgrass, Transcriptome
Publication Number: 10109440
ISBN: 978-1-339-72726-4
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