title: A novel role for histone methyltransferase KYP/SUVH4 in the control of Arabidopsis primary seed dormancy.
abstract: • Seed dormancy controls germination and plays a crucial role in the life cycle of plants. Chromatin modifications are involved in the regulation of seed dormancy; however, little is known about the underlying mechanism. • KYP/SUVH4 is required for histone H3 lysine 9 dimethylation. Mutations in this gene cause increased seed dormancy. KYP/SUVH4-overexpressing Arabidopsis plants show decreased dormancy. KYP/SUVH4 expression is regulated by abscisic acid (ABA) and gibberellins (GA). The sensitivity of seed germination to ABA and paclobutrazol (PAC) is enhanced slightly in kryptonite-2 (kyp-2) and suvh4-2/suvh5 mutants, but weakened in KYP/SUVH4-overexpressing plants. • In the kyp-2 mutant, several dormancy-related genes, including DOG1 and ABI3, show increased expression levels, in agreement with a negative role for KYP/SUVH4 in gene transcription. • Genetic analysis showed that DOG1 and HUB1 are epistatic to KYP/SUVH4, suggesting that these genes regulate seed dormancy in the same genetic pathway.
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.|College of Landscape Architecture, Beijing University of Agriculture, Beijing, 102206, China.
authors: Jian
authors: J
authors: Zheng
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
authors: Fengying
authors: F
authors: Chen
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.|Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100089, China.
authors: Zhi
authors: Z
authors: Wang
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
authors: Hong
authors: H
authors: Cao
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
authors: Xiaoying
authors: X
authors: Li
authors: Key Laboratory of Photosynthesis and Molecular Physiology, Research Center of Plant Molecular and Developmental Biology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
authors: Xin
authors: X
authors: Deng
authors: Department of Plant Breeding and Genetics, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany.
authors: Wim J J
authors: WJJ
authors: Soppe
authors: Center for Biological Systems Analysis, University of Freiburg, D-79104 Freiburg, Germany.
authors: Yong
authors: Y
authors: Li
authors: Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
authors: Yongxiu
authors: Y
authors: Liu
mesh_terms: D000040:Abscisic Acid / Q000494:pharmacology; D017360:Arabidopsis / Q000187:drug effects / Q000196:embryology* / Q000201:enzymology* / Q000235:genetics; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D055786:Gene Knockout Techniques; D017343:Genes, Plant / Q000235:genetics; D005838:Genotype; D005875:Gibberellins / Q000494:pharmacology; D011495:Histone-Lysine N-Methyltransferase / Q000235:genetics / Q000378:metabolism*; D016254:Mutagenesis, Insertional / Q000235:genetics; D009154:Mutation / Q000235:genetics; D010641:Phenotype; D057445:Plant Dormancy / Q000187:drug effects / Q000235:genetics; D030821:Plants, Genetically Modified; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D014230:Triazoles / Q000494:pharmacology
chemical_list: D029681:Arabidopsis Proteins; D005875:Gibberellins; D012333:RNA, Messenger; D014230:Triazoles; C053370:paclobutrazol; D000040:Abscisic Acid; D011495:Histone-Lysine N-Methyltransferase; C471228:SUVH4 protein, Arabidopsis