Please use this identifier to cite or link to this item:
|Title:||Crosstalk between ethylene and abscisic acid during changes in soil water content reveals a new role for 1-Aminocyclopropane-1- Carboxylate in coffee anthesis regulation|
|Keywords:||Coffee - Flowering|
Lysine Histidine Transporter 1 (LHT1)
ACC oxidase (ACO)
Café - Floração
Transportador Lisina-Histidina 1 (LHT1)
Ácido 1-carboxílico-1-aminociclopropano (ACC)
|Publisher:||Frontiers Media S.A.|
|Citation:||LÓPEZ, M. E. et al. Crosstalk between ethylene and abscisic acid during changes in soil water content reveals a new role for 1-Aminocyclopropane-1- Carboxylate in coffee anthesis regulation. Frontiers in Plant Science, [S.I.], v. 13, Apr. 2022. DOI: 10.3389/fpls.2022.824948.|
|Abstract:||Coffee (Coffea arabica L.) presents an asynchronous flowering regulated by an endogenous and environmental stimulus, and anthesis occurs once plants are rehydrated after a period of water deficit. We evaluated the evolution of Abscisic Acid (ABA), ethylene, 1-aminocyclopropane-1-carboxylate (ACC) content, ACC oxidase (ACO) activity, and expression analysis of the Lysine Histidine Transporter 1 (LHT1) transporter, in the roots, leaves, and flower buds from three coffee genotypes (C. arabica L. cv Oeiras, Acauã, and Semperflorens) cultivated under field conditions with two experiments. In a third field experiment, the effect of the exogenous supply of ACC in coffee anthesis was evaluated. We found an increased ACC level, low ACO activity, decreased level of ethylene, and a decreased level of ABA in all tissues from the three coffee genotypes in the re-watering period just before anthesis, and a high expression of the LHT1 in flower buds and leaves. The ethylene content and ACO activity decreased from rainy to dry period whereas the ABA content increased. A higher number of opened and G6 stage flower buds were observed in the treatment with exogenous ACC. The results showed that the interaction of ABA-ACO-ethylene and intercellular ACC transport among the leaves, buds, and roots in coffee favors an increased level of ACC that is most likely, involved as a modulator in coffee anthesis. This study provides evidence that ACC can play an important role independently of ethylene in the anthesis process in a perennial crop.|
|Appears in Collections:||DBI - Artigos publicados em periódicos|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.