13 research outputs found
ROLE OF A GATA-TYPE ZINC FINGER PROTEIN IN REGULATING SEED DORMANCY IN ARABIDOPSIS THALIANA
Ph.DDOCTOR OF PHILOSOPH
Regulation of Seed Germination: The Involvement of Multiple Forces Exerted via Gibberellic Acid Signaling
10.1016/j.molp.2018.12.013MOLECULAR PLANT12124-2
Regulation of primary seed dormancy by MAJOR LATEX PROTEIN-LIKE PROTEIN329 in Arabidopsis is dependent on DNA-BINDING ONE ZINC FINGER6
10.1093/jxb/erac337JOURNAL OF EXPERIMENTAL BOTANY73196838-685
A Novel RGL2-DOF6 Complex Contributes to Primary Seed Dormancy in Arabidopsis thaliana by Regulating a GATA Transcription Factor
MOLECULAR PLANT10101307-132
An LRR-only protein regulates abscisic acid-mediated abiotic stress responses during Arabidopsis seed germination
10.1007/s00299-020-02538-8PLANT CELL REPORTS397909-92
Contrasting bloom dates in two apple cultivars linked to differential levels of phytohormones and heat requirements during ecodormancy
10.1016/j.scienta.2021.110413SCIENTIA HORTICULTURAE28
A stable JAZ protein from peach mediates the transition from outcrossing to self-pollination
10.1186/s12915-015-0124-6BMC Biology1311
Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)
Spring frosts exacerbated by global climate change have become a constant threat to temperate fruit production. Delaying the bloom date by plant growth regulators (PGRs) has been proposed as a practical frost avoidance strategy. Ethephon is an ethylene-releasing PGR found to delay bloom in several fruit species, yet its use is often coupled with harmful effects, limiting its applicability in commercial tree fruit production. Little information is available regarding the mechanisms by which ethephon influences blooming and bud dormancy. This study investigated the effects of fall-applied ethephon on bud phenology, cold hardiness, and hormonal balance throughout the bud dormancy cycle in peach. Our findings concluded that ethephon could alter several significant aspects of peach bud physiology, including accelerated leaf fall, extended chilling accumulation period, increased heat requirements, improved cold hardiness, and delayed bloom date. Ethephon effects on these traits were primarily dependent on its concentration and application timing, with a high concentration (500 ppm) and an early application timing (10% leaf fall) being the most effective. Endogenous ethylene levels were induced significantly in the buds when ethephon was applied at 10% versus 90% leaf fall, indicating that leaves are essential for ethephon uptake. The hormonal analysis of buds at regular intervals of chilling hours (CH) and growing degree hours (GDH) also indicated that ethephon might exert its effects through an abscisic acid (ABA)-independent way in dormant buds. Instead, our data signifies the role of jasmonic acid (JA) in mediating budburst and bloom in peach, which also appears to be influenced by ethephon treatment. Overall, this research presents a new perspective in interpreting horticultural traits in the light of biochemical and molecular data and sheds light on the potential role of JA in bud dormancy, which deserves further attention in future studies that aim at mitigating spring frosts
Ethylene-Mediated Modulation of Bud Phenology, Cold Hardiness, and Hormone Biosynthesis in Peach (Prunus persica)
10.3390/plants10071266PLANTS-BASEL10