Levels of Endogenous Gibberellins, Abscisic Acid, Indol 3 Acetic Acid, and Naringenin During Dormancy of Peach Flower Buds

Regulation of Bud Dormancy and Bud Break in Japanese Apricot (Prunus mume Siebold ^|^amp; Zucc.) and Peach [Prunus persica (L.) Batsch]: A Summary of Recent Studies

“…This work identified a MADS-box gene with dormancy-associated expression. Seasonal expression analysis suggested that the gene was up-regulated during bud and gas chromatography (Luna et al, 1990); however, conclusive results have yet to be obtained. Several studies have investigated the effects of the external application of phytohormones such as GA (Reinoso et al, 2002) and cytokinin (Campoy et al, 2010) on bud burst in Prunus.…”

Dormancy Behaviors and Underlying Regulatory Mechanisms: From Perspective of Pathways to Epigenetic Regulation

“…These results indicate that microsporogenesis and microgametogenesis occur during the chilling period, which are otherwise suppressed by warm temperature. Chilling effect on gynoecium/carpel development was also studied and a major developmental event occurs near the end of chilling period where two ovules form in the unicarpelar gynoecium, the site where sporogenesis and gametogenesis occur (Luna et al 1990(Luna et al , 1991(Luna et al , 1993. Meanwhile, vascular connections between floral primordia and branch wood are completed by late winter, another indicator of floral development.…”

“…The cause of this tissue-specific chilling requirement remains unknown but bud developmental status, course and speed during the dormancy/chilling period may play a role. Indeed, terminal vegetative buds are complete and well developed before entry into dormancy (Luna et al 1991) while development of dormant floral counterparts are far from complete but continue to proceed throughout the chilling period (Luna et al 1990(Luna et al , 1991(Luna et al , 1993Zhang et al 2014). Conceivably, only floral buds that finish critical developmental stages in chilling conditions are capable of growth and flowering the following spring.…”

“…During vernalization, meristematic cells sense and perceive chilling, and start division and growth to form tissues that appear to be critical for floral induction in the following spring (Metzger 1996). During dormancy release, chilling progressively releases arrested cell growth in peach vegetative buds as well as drives developmental programming through critical stages in peach floral organs, which are otherwise inhibited by warm temperature (Erez et al 1979a(Erez et al , 1979bLuna et al 1990Luna et al , 1991Luna et al , 1993. The other feature is that chilling, unlike photoperiod, acts slowly, and it usually takes a few weeks to several months before it is manifested.…”

“…4.1), consistent with dormancy onset and exit occurring only under low-temperature condition. Second, SVP protein physically interacts with flower whorl B, C and E genes to possibly regulate floral organ formation and development in Arabidopsis (Gregis et al 2009); and such interaction is critical for DAM-mediated arrest of floral organ development prior to winter (Luna et al 1990(Luna et al , 1991(Luna et al , 1993Reinoso et al 2002aReinoso et al , 2002bJulian et al 2011). Third, SVP protein as a master transcriptional regulator can bind and regulate minimally a 1000 genes in Arabidopsis that are involved in an array of biological processes including floral development, growth regulator signaling, basic cellular and metabolic processes, protein modification, reproduction, morphology, and others (Gregis et al 2013).…”