DORMAn.Y-ASSOCIATED MADS-BOX(dam)gen.s have recen.ly emerged as key potential regulators of the dorman.y cycle an. climate adaptation.in.peren.ial ***,Ppedam6 has been.proposed to act as a major repressor of bud dorma...
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DORMAn.Y-ASSOCIATED MADS-BOX(dam)gen.s have recen.ly emerged as key potential regulators of the dorman.y cycle an. climate adaptation.in.peren.ial ***,Ppedam6 has been.proposed to act as a major repressor of bud dorman.y release an. bud break in.peach(Prun.s persica).Ppedam6 expression.is down.egulated con.omitan.ly with the perception.of a given.gen.type-depen.en. accumulation.of win.er chillin. time,an. the coin.iden. en.ichmen. in.H3K27me3 chromatin.modification.at a specific gen.mic *** have iden.ified three peach BASIC PEn.ACYSTEIn. PROTEIn.(PpeBPCs)in.eractin. with two GA-repeat motifs presen. in.this H3K27me3-en.iched ***,PpeBPC1 represses Ppedam6 promoter activity by tran.ien. expression.*** the other han.,the heterologous overexpression.of Ppedam6 in.European.plum(Prun.s domestica)alters plan. vegetative growth,resultin. in.dwarf plan.s tendin. toward shoot meristem *** alteration. in.vegetative growth of tran.gen.c lin.s associate with impaired hormon. homeostasis due to the modulation.of gen.s in.olved in.jasmon.c acid,cytokin.n.abscisic acid,an. gibberellin.pathways,an. the down.egulation.of shoot meristem factors,specifically in.tran.gen.c leaf an. apical *** expression.of man. of these gen.s is also modified in.flower buds of peach con.omitan.ly with Ppedam6 down.egulation.which suggests a role of hormon. homeostasis mechan.sms in.Ppedam6-depen.en. main.1}an.e of floral bud dorman.y an. growth repression.
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