Involvement of the MetO/Msr System in Two Acer Species That Display Contrasting Characteristics during Germination - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Molecular Sciences Année : 2020

Involvement of the MetO/Msr System in Two Acer Species That Display Contrasting Characteristics during Germination

Résumé

The levels of methionine sulfoxide (MetO) and the abundances of methionine sulfoxide reductases (Msrs) were reported as important for the desiccation tolerance of Acer seeds. To determine whether the MetO/Msrs system is related to reactive oxygen species (ROS) and involved in the regulation of germination in orthodox and recalcitrant seeds, Norway maple and sycamore were investigated. Changes in water content, MetO content, the abundance of MsrB1 and MsrB2 in relation to ROS content and the activity of reductases depending on nicotinamide adenine dinucleotides were monitored. Acer seeds differed in germination speed-substantially higher in sycamore-hydration dynamics, levels of hydrogen peroxide, superoxide anion radicals (O 2 •−) and hydroxyl radicals (•OH), which exhibited peaks at different stages of germination. The MetO level dynamically changed, particularly in sycamore embryonic axes, where it was positively correlated with the levels of O 2 •− and the abundance of MsrB1 and negatively with the levels of •OH and the abundance of MsrB2. The MsrB2 abundance increased upon sycamore germination; in contrast, it markedly decreased in Norway maple. We propose that the ROS-MetO-Msr redox system, allowing balanced Met redox homeostasis, participates in the germination process in sycamore, which is characterized by a much higher speed compared to Norway maple.
Fichier principal
Vignette du fichier
IJMS Acer Germ 2020.pdf (3.21 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03048841 , version 1 (09-12-2020)

Identifiants

Citer

Natalia Wojciechowska, Shirin Alipour, Ewelina Stolarska, Karolina Bilska, Pascal Jean Del Rey, et al.. Involvement of the MetO/Msr System in Two Acer Species That Display Contrasting Characteristics during Germination. International Journal of Molecular Sciences, 2020, 21 (23), ⟨10.3390/ijms21239197⟩. ⟨hal-03048841⟩
74 Consultations
36 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More