Drought and re-watering modify ethylene production and sensitivity, and are associated with coffee anthesis

Abstract

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Ethephon-Induced Ethylene Enhances Protein Degradation in Source Leaves, but Its High Endogenous Level Inhibits the Development of Regenerative Organs in Brassica napus

“…Ethylene production increases drastically during several plant developmental events, such as germination, leaf and flower senescence and abscission, and fruit ripening [1][2][3][4][5]. Ethylene is involved in the regulation of plant responses to abiotic stress [6,7] and plays a critical role in the modulation of plant defense against different biotic stresses [8]. Exogenous treatments with ethylene and its precursors as well as ethylene inhibitors have demonstrated clear links between this volatile plant hormone and plant defense responses [9,10].…”

Crosstalk between Ethylene and ABA during changes in soil water content reveals a role of ACC in coffee anthesis regulation

“…6a, b). As proposed by Lima et al ., 2020, the 1-MCP application induces ethylene production and participate in the coffee anthesis process. Results of the third field experiment in the treatment where 1-MCP single and combined with ACC was applied, the number of opened and G6 stage flower buds was similar, however in the treatment with only ACC this number was higher.…”

“…However, a positive effect on promoting flowering has been observed in pineapple ( Ananas comusus L. Merr) (Trusov & Botella, 2006) and lilies ( Triteleia laxa Benth) (Han et al ., 1988). Recently, it was proposed that ethylene is involved directly in coffee anthesis by changes in the biosynthesis pathway and regulatory genes expression (Lima et al ., 2020). In other words, the direct effect of ABA in flowering is not well understood, despite there being some reports about positive and negative influences on flowering (Izawa, 2021).…”

“…2(1c)). 1-MCP concentration applied was determined according to Lima et al (2020). Each treatment was sprayed carefully in each branch, totally wetting leaves and flower buds in the upper third of the plant.…”

“…Recently, it was proposed that ethylene can play an important role in coffee flowering, once rehydrating droughted plants can increase ethylene levels and ethylene sensitivity, regulating coffee anthesis (Lima et al ., 2020). Ethylene is a volatile compound that can be easily transported by diffusion throughout cells and intercellular spaces (Alonso & Ecker, 2001).…”