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Editorial for Special Issue: Metaproteomics
Open AccessArticle

Comparative Proteomic Analysis Unveils Critical Pathways Underlying the Role of Nitrogen Fertilizer Treatment in American Elderberry

1
Department of Chemistry, University of Missouri, Columbia, MO 65211, USA
2
Division of Plant Sciences, Southwest Research Center, University of Missouri, Mt. Vernon, MO 65712, USA
*
Author to whom correspondence should be addressed.
Proteomes 2019, 7(1), 10; https://doi.org/10.3390/proteomes7010010
Received: 2 February 2019 / Revised: 4 March 2019 / Accepted: 18 March 2019 / Published: 20 March 2019
American elderberry (Sambucus nigra subsp. canadensis) is a rapidly growing specialty crop in Missouri and eastern North America. Nitrogen (N) is a major nutrient involved in plant growth and development. However, proteome changes for different genotypes of elder in response to varying levels of N-treatment remain undefined. To reveal plant responses to N, comparative proteomic analyses were performed to determine consistent changes in three genotypes of elderberry leaves (Adams II, Bob Gordon and Wyldewood) grown under different N-fertilizer treatments. 165 proteins separated by two dimensional gel electrophoresis showed significant differences in abundance (p < 0.05 and greater than 2-fold). Principal component analysis of the abundance profiles of these proteins revealed Bob Gordon as a distinct genotype. The 165 proteins were identified by mass spectrometry and showed similar functional distributions in these genotypes underlying the N-treatment. Among the proteins identified, 23 are mainly involved in photosynthesis, protein metabolism and redox homeostasis. Their abundance profiles were not altered upon exposure to N or genotype. These results provide novel insights into plant responses to fertilizer treatment at the proteome level and could lead to a better understanding of molecular mechanisms of elderberry growth. View Full-Text
Keywords: elderberry; comparative proteomics; nitrogen response; Sambucus elderberry; comparative proteomics; nitrogen response; Sambucus
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Yang, B.; Thomas, A.L.; Greenlief, C.M. Comparative Proteomic Analysis Unveils Critical Pathways Underlying the Role of Nitrogen Fertilizer Treatment in American Elderberry. Proteomes 2019, 7, 10.

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