Histone deacetylation modification participates in the repression of peanut (Arachis hypogaea L.) seed storage protein gene Ara h 2.02 during germination. (25th November 2014)

• Record Type: Journal Article
• Authors: Yang, P.; Zhang, F.; Luo, X.; Zhou, Y.; Xie, J.; Mock, H.‐P.
• Is Part Of: Plant biology. Volume 17:Number 2(2015:Mar.)
• Page Start: 522
• Page End: 527
• Publication Date: 2014-11-25
• Subjects: Botany -- Periodicals; Plants -- genetics -- Periodicals; Plants -- growth & development -- Periodicals; Plant Proteins -- Periodicals; Gene Expression Regulation, Plant -- Periodicals; Botanique -- Périodiques; 580
• DOI: 10.1111/plb.12268
• Languages: English
• ISSNs: 1435-8603

Abstract

<abstract abstract-type="main" id="plb12268-abs-0001"> <title>Abstract</title> <p>Genes encoding seed storage proteins (SSPs) are specifically and highly expressed during seed maturation. In <italic>Arabidopsis</italic>, chromatin‐based mechanisms involved in the repression of SSPs during germination have been proposed. However, epigenetic regulation involved in repressing SSPs in vegetative tissues of peanut is not well understood. Histone deacetylase (HDAC) is a chromatin‐remodelling factor that contributes to transcriptional repression in eukaryotes. To address whether histone deacetylation modification is involved in the repression of SSP genes during germination in peanut, we generated an <italic>Ara h 2.02</italic><sub><italic>pro</italic></sub>: β<italic>‐glucuronidase</italic> (<italic>GUS</italic>) construct by fusing the 1972 bp <italic>Ara h 2.02</italic> promoter of peanut (from −1972 to −1) to the GUS reporter gene and transformed it into wild‐type <italic>Arabidopsis</italic> plants and <italic>HDAC</italic> mutants. GUS staining revealed that the mutation in <italic>HISTONE DEACETYLASE19</italic> (<italic>HDA19</italic>) resulted in the ectopic expression of peanut SSP gene <italic>Ara h 2.02</italic> in seedlings. In addition, Chromatin immunoprecipitation (ChIP) assays showed that the ectopic expression of <italic>Ara h 2.02</italic> was accompanied by histone hyperacetylation during germination. These results suggest that histone deacetylation modification may play a vital role in repressing embryonic properties during the peanut vegetative growth.</p> </abstract>