Global histone H3 hyperacetylation-associated epigenetic changes induced in ethephon-primed sprouts of soybean [Glycine max (L.) Merrill]

The concept of plant growth regulators (PGRs) in modulating the plant physiological processes through epigenetic modification(s) is emerging. The present work aims to elucidate the histone (de)acetylation-associated epigenetic changes in ethylene (ET)-primed sprouts of soybean [ Glycine max (L.) Mer...

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Bibliographic Details
Published inActa physiologiae plantarum Vol. 42; no. 2
Main Authors Manoharlal, Raman, Saiprasad, G. V. S.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2020
Springer Nature B.V
Subjects
Acetylation
Agriculture
Agronomy
Biomedical and Life Sciences
Chloroethylphosphonic acid
Epigenetics
Germination
Glycine max
Growth regulators
Histone H3
Histones
Life Sciences
Lysine
Original Article
Plant Anatomy/Development
Plant Biochemistry
Plant Genetics and Genomics
Plant growth
Plant Pathology
Plant Physiology
Priming
Soybeans
Starch
Transcription
α-Amylase
Epigenetics
H3K9
Histone acetylation
Soybean
Germination
Ethylene
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Summary:The concept of plant growth regulators (PGRs) in modulating the plant physiological processes through epigenetic modification(s) is emerging. The present work aims to elucidate the histone (de)acetylation-associated epigenetic changes in ethylene (ET)-primed sprouts of soybean [ Glycine max (L.) Merrill]. Our results demonstrated that ethephon (donor source of ET) priming (ETp) in soybean significantly enhanced the: (1) germination rate, (2) global histone H3 (H3ac) and H3 lysine 9 (H3K9ac) acetylation levels, (3) histone acetyltransferases activity (concomitant with reduced histone deacetylases activity), (4) cellular acetyl-CoA pool and (5) global de novo RNA synthesis. As a gene-specific case study, ETp resulted in relative reduced starch content, concomitant with an enhanced mRNA accumulation, transcriptional rate and proximal promoter H3K9ac levels of α-amylase 1 ( GmαAMY1 ). Taken together, the proposed epigenetic role of ET as a ‘histone-code’ modulator in soybean sprouts could provide a novel insight on PGR-induced epigenetic re-programming and signifies a broader scope for future epigenetic studies in other agronomical important crops.
ISSN:0137-5881
1861-1664
DOI:10.1007/s11738-020-3015-6