Chilling and forcing requirement of five international fig cultivars grown in Southeastern Brazil

Sub-lethal oxidative stress may be involved in bud dormancy release, and increased hydrogen peroxide (H2O2) levels may activate budburst acting as a signaling molecule triggering this process. [...]the transcription of genes encoding H2O2 enzymes, and/or the corresponding enzyme activities, were ind...

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Bibliographic Details
Published in:Revista Ceres 2022-08, Vol.69 (4), p.379-389
Main Authors: Monteiro, Laís Naiara Honorato, Leonel, Sarita, Souza, Jackson Mirellys Azevedo, Ferreira, Rafael Bibiano, Silva, Marcelo de Souza, Garcia, Emerson Loli
Format: Article
Language:English
Subjects:
AGRICULTURE, MULTIDISCIPLINARY
antioxidant enzymes
biodiversity
Carbohydrates
chilling requirements
Cold
Cultivars
Dormancy
Environmental factors
Enzymatic activity
Enzymes
Ficus carica L
Fruits
gene pool
Hexoses
Hydrogen peroxide
Lethal levels
Oxidative stress
Physiological effects
Trees
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Summary:Sub-lethal oxidative stress may be involved in bud dormancy release, and increased hydrogen peroxide (H2O2) levels may activate budburst acting as a signaling molecule triggering this process. [...]the transcription of genes encoding H2O2 enzymes, and/or the corresponding enzyme activities, were induced after dormancy release in order to prevent the accumulation of lethal levels of H2O2 (Hernandez et al. 2021). According to the same authors, when the temperature drops in late autumn, deciduous plants enter the para-dormancy stage, wherein the hexoses content (glucose+fructose) are slightly higher than the starch content in yolks. Overall, the response of plants towards the biotic and abiotic stresses causes oscillation in enzymes activities, carbohydrates reallocation and nutritional profile. [...]understanding the physiological principles and environmental factors during dormancy release period is necessary to select an appropriate fig cultivar according to the growing area.
ISSN:0034-737X
2177-3491
2177-3491
DOI:10.1590/0034-737x202269040001