Month: September 2022

NON-DORMANT MUTANTS. "The identification and characterization of non-dormant mutants, such as the evergrowing (evg) mutant of peach, in addition to several functional studies using transgenic poplar, have contributed to renew the dormancy field with increasing molecular works at the gene level." https://lnkd.in/duD22Cw View in LinkedIn

TRANSGENIC INSIGHTS. "The heterologous expression of some of these genes in transgenic plants has offered additional clues about their role in flowering and dormancy. Arabidopsis plants expressing DAM1 from leafy spurge and SVP1 and SVP3 from kiwifruit show a delay in flowering time; whereas the expression of PmDAM6 from Japanese apricot in poplar causes growth cessation and bud set under conditions favorable for growth." https://lnkd.in/duD22Cw View in LinkedIn

SUPPRESSOR GENES. "The overexpression of the birch (Betula pendula) FRUITFULL (FUL)-like gene BpMADS4 delays senescence and winter dormancy in Populus tremula, and the presence of different allelic variants in a SUPPRESSOR OF OVEREXPRESSION OF CONSTANS (CO) 1 (SOC1)-like gene in apricot is found associated with different chilling requirements for dormancy break." https://lnkd.in/duD22Cw View in LinkedIn

EPIGENETIC CIRCADIAN CLOCK. "Pieces of an Epigenetic “Alarm Clock” for Bud Dormancy and Awakening. Several reviews postulate the participation of different epigenetic mechanisms involving histone modification, DNA methylation, and the synthesis of small non-coding RNAs in regulating bud dormancy events, based on evident similarities between the environmental and molecular control of dormancy in buds and other well-known processes, such as flowering initiation, vernalization, and seed development." https://lnkd.in/duD22Cw View in LinkedIn

EPIGENETIC HALLMARKS. "The global levels of genomic DNA methylation and acetylated histone 4 (H4) show cyclic and opposite variations during the seasonal development of chestnut (Castanea sativa), with higher DNA methylation ratios and lower H4 acetylation levels in dormant buds with respect to actively growing tissues." https://lnkd.in/duD22Cw View in LinkedIn

TRANSCRIPTION FACTORS. "The similarities of bud dormancy in perennials with the vernalization treatment for flowering in Arabidopsis and cereals reside in their common requirement of a time period of quantitative and cumulative chilling, and the participation of certain MADS-box domain transcription factors with key regulatory tasks." https://lnkd.in/duD22Cw View in LinkedIn

EPIGENETIC SIGNALS. "As new details of the epigenetic regulation of gene expression during bud dormancy processes emerge, its mechanistic similarities with the well-known regulation of Arabidopsis FLC gene are becoming increasingly evident." https://lnkd.in/duD22Cw View in LinkedIn

EXPANSIVE FRONTIER. "The rich literature describing vernalization in model plants may radically accelerate the knowledge of the epigenetics of bud dormancy regulation over the next few years, but it will require the implementation of more informative biochemical and functional approaches in perennial species to complement previous genetic and genomic studies." https://lnkd.in/duD22Cw View in LinkedIn

PIECES OF THE CLOCK. "The seasonality of bud dormancy with undefined repeated cycles of growth–dormancy along the life of an individual, the major role of hormones such as ABA, and the occurrence of dormancy-related processes on preformed flowers located within buds instead of vegetative tissues, among other particularities, suggest the existence of yet unknown exciting pieces in the “clock.”." https://lnkd.in/duD22Cw View in LinkedIn

GROWTH-DORMANCY CYCLE. "A key feature of the perennial life style in plants is the ability to cease meristem activity and to establish a dormant state in which the meristem is rendered insensitive to growth-promoting signals for some time before it is released and can resume growth. The seasonal cycling between growth and dormancy has received little attention despite its importance for perennial behaviour." https://lnkd.in/dgbUNyw View in LinkedIn