Crosstalk between Ethylene and ABA during changes in soil water content reveals a role of ACC in coffee anthesis regulation
Crosstalk between Ethylene and ABA during changes in soil water content reveals a role of ACC in coffee anthesis regulation
Summary Coffee (Coffea arabica L.) presents an asynchronous flowering regulated by 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 roots, leaves and, flower buds from three coffee genotypes (Coffea arabica L. cv Oeiras, Acau?, and Semperflorens) cultivated under field conditions with two experiments. In a third field experiment, the effect of exogenous supply of ACC in coffee anthesis was evaluated.We found an increased ACC level in all tissues from the three coffee genotypes in the re-watering period just before anthesis for all tissues and high expression of the LHT1 gene in flower buds and leaves. Ethylene content and ACO activity decreased from rainy to dry period whereas ABA content increased. 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 leaves, buds, and roots in coffee favors an increased level of ACC that is most likely, involved as a modulator in coffee anthesis.
Espindola Lima Juliana Maria、L¨?pez Marlon Enrique、Santos Iasminy Silva、Cardon Carlos Henrique、Lima Andr¨| Almeida、Guti¨|rrez Robert M¨￠rquez、Mesa Andrea Jaramillo、Chalfun-Junior Antonio
Laboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of LavrasLaboratory of Plant Molecular Physiology, Plant Physiology Sector, Department of Biology, Federal University of Lavras
植物学生物化学生理学
FloweringLHT1 TransporterACOAcau?OeirasSemperflorensABAEthylene
Espindola Lima Juliana Maria,L¨?pez Marlon Enrique,Santos Iasminy Silva,Cardon Carlos Henrique,Lima Andr¨| Almeida,Guti¨|rrez Robert M¨￠rquez,Mesa Andrea Jaramillo,Chalfun-Junior Antonio.Crosstalk between Ethylene and ABA during changes in soil water content reveals a role of ACC in coffee anthesis regulation[EB/OL].(2025-03-28)[2025-04-24].https://www.biorxiv.org/content/10.1101/2021.08.10.455871.点此复制
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