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DOI	10.1073/pnas.2109332118
	Plant height heterosis is quantitatively associated with expression levels of plastid ribosomal proteins
	Birdseye D.; De Boer L.A.; Bai H.; Zhou P.; Shen Z.; Schmelz E.A.; Springer N.M.; Briggs S.P.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:47
英文摘要	The use of hybrids is widespread in agriculture, yet the molecular basis for hybrid vigor (heterosis) remains obscure. To identify molecular components that may contribute to trait heterosis, we analyzed paired proteomic and transcriptomic data from seedling leaf and mature leaf blade tissues of maize hybrids and their inbred parents. Nuclear- and plastid-encoded subunits of complexes required for protein synthesis in the chloroplast and for the light reactions of photosynthesis were expressed above midparent and high-parent levels, respectively. Consistent with previous reports in Arabidopsis, ethylene biosynthetic enzymes were expressed below midparent levels in the hybrids, suggesting a conserved mechanism for heterosis between monocots and dicots. The ethylene biosynthesis mutant, acs2/acs6, largely phenocopied the hybrid proteome, indicating that a reduction in ethylene biosynthesis may mediate the differences between inbreds and their hybrids. To rank the relevance of expression differences to trait heterosis, we compared seedling leaf protein levels to the adult plant height of 15 hybrids. Hybrid/midparent expression ratios were most positively correlated with hybrid/midparent plant height ratios for the chloroplast ribosomal proteins. Our results show that increased expression of chloroplast ribosomal proteins in hybrid seedling leaves is mediated by reduced expression of ethylene biosynthetic enzymes and that the degree of their overexpression in seedlings can quantitatively predict adult trait heterosis. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Ethylene; Heterosis; Hybrid vigor; Maize; Proteomics
语种	英语
scopus关键词	ethylene; ribosome protein; chloroplast protein; ethylene; ethylene derivative; proteome; ribosome protein; transcriptome; acs2 gene; acs6 gene; Arabidopsis; Article; chloroplast; eudicot; genetic code; heterosis; leaf lamina; maize; monocot; nonhuman; photoactivation; photosynthesis; plant gene; plant height; plant leaf; plastid; prediction; protein analysis; protein expression; protein synthesis; proteomics; seedling; transcriptomics; gene expression profiling; gene expression regulation; genetics; heterosis; metabolism; physiology; plastid; Arabidopsis; Chloroplast Proteins; Ethylenes; Gene Expression Profiling; Gene Expression Regulation, Plant; Hybrid Vigor; Photosynthesis; Plant Leaves; Plastids; Proteome; Proteomics; Ribosomal Proteins; Seedlings; Transcriptome; Zea mays
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250975
作者单位	Division of Biological Sciences, University of California San Diego, San diego, CA 92093, United States; Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, MN 55108, United States
推荐引用方式 GB/T 7714	Birdseye D.,De Boer L.A.,Bai H.,et al. Plant height heterosis is quantitatively associated with expression levels of plastid ribosomal proteins[J],2021,118(47).
APA	Birdseye D..,De Boer L.A..,Bai H..,Zhou P..,Shen Z..,...&Briggs S.P..(2021).Plant height heterosis is quantitatively associated with expression levels of plastid ribosomal proteins.Proceedings of the National Academy of Sciences of the United States of America,118(47).
MLA	Birdseye D.,et al."Plant height heterosis is quantitatively associated with expression levels of plastid ribosomal proteins".Proceedings of the National Academy of Sciences of the United States of America 118.47(2021).