| Autor: |
Rômulo Pedro Macêdo, Lima, Alessandra Vasconcellos, Nunes-Laitz, Mariana de Lara Campos, Arcuri, Felipe Girotto, Campos, Thaís Arruda Costa, Joca, Gean Charles, Monteiro, Hélio, Kushima, Giuseppina Pace Pereira, Lima, Luiz Fernando Rolim, de Almeida, Pedro, Barreto, Ivan, de Godoy Maia |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Plant Science. 322:111365 |
| ISSN: |
0168-9452 |
| Popis: |
Mitochondrial uncoupling proteins (UCPs) are specialized proteins capable of dissipating the proton electrochemical gradient generated in respiration independent of ATP synthesis. Three UCP coding genes with distinct expression patterns have been identified in Arabidopsis thaliana (namely UCP1, UCP2 and UCP3). Here, we generated T-DNA double-insertion mutants (ucp1 ucp2, ucp1 ucp3 and ucp2 ucp3) to investigate the functionality of the Arabidopsis UCP isoforms. A strong compensatory effect of the wild-type UCP gene was found in the double-knockdown lines. Higher levels of reactive oxygen species (ROS) were observed in vegetative and reproductive organs of double mutant plants. This exacerbated oxidative stress in plants also increased lipid peroxidation but was not compensated by the activation of the antioxidant system. Alterations in O |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect