NADPH Oxidase RbohD and Ethylene Signaling are Involved in Modulating Seedling Growth and Survival Under Submergence Stress

Hong, Chen-Pu; Wang, Mao-Chang; Yang, Chin-Ying

doi:10.3390/plants9040471

Cited by 28 publications

(14 citation statements)

References 52 publications

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“…In Arabidopsis, both RBOH D and F are also required for activating responses to hypoxia ( Liu et al , 2017 ). Ethylene and RBOHD are involved in regulating seed germination and post-germination stages under normoxic conditions, and in modulating seedling root growth, leaf chlorophyll content, and hypoxia-inducible gene expression under low O 2 availability ( Hong et al , 2020 ). The high tolerance to low-O 2 conditions is dependent on the high ABA level and the ABA-mediated antioxidant capacity in rice roots, through a process requiring proline accumulation ( Cao et al , 2020 ).…”

Section: Hormone-regulated Responses To Hypoxia–reoxygenationmentioning

confidence: 99%

The hypoxia–reoxygenation stress in plants

León

Castillo

Gayubas

2020

Journal of Experimental Botany

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Plants are very plastic in adapting growth and development to changing adverse environmental conditions. This feature will be essential for plants to survive climate changes characterized by extreme temperatures and rainfall. Although plants require molecular oxygen (O2) to live, they can overcome transient low-O2 conditions (hypoxia) until return to standard 21% O2 atmospheric conditions (normoxia). After heavy rainfall, submerged plants in flooded lands undergo transient hypoxia until water recedes and normoxia is recovered. The accumulated information on the physiological and molecular events occurring during the hypoxia phase contrasts with the limited knowledge on the reoxygenation process after hypoxia, which has often been overlooked in many studies in plants. Phenotypic alterations during recovery are due to potentiated oxidative stress generated by simultaneous reoxygenation and reillumination leading to cell damage. Besides processes such as N-degron proteolytic pathway-mediated O2 sensing, or mitochondria-driven metabolic alterations, other molecular events controlling gene expression have been recently proposed as key regulators of hypoxia and reoxygenation. RNA regulatory functions, chromatin remodeling, protein synthesis, and post-translational modifications must all be studied in depth in the coming years to improve our knowledge on hypoxia–reoxygenation transition in plants, a topic with relevance in agricultural biotechnology in the context of global climate change.

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Section: Hormone-regulated Responses To Hypoxia–reoxygenationmentioning

confidence: 99%

The hypoxia–reoxygenation stress in plants

León

Castillo

Gayubas

2020

Journal of Experimental Botany

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“…For hydrophytes and hygrophytes, aerenchyma forms in their rhizomes; however, terrestrial plants could also differentiate to produce or accelerate the development of aerenchyma in an anoxic environment. In this situation, ROS and ethylene signaling are involved in this adaptation regulation (Yamauchi et al, 2014;Sasidharan and Voesenek, 2015;Singh et al, 2016;Choudhary et al, 2020;Hong et al, 2020). Lysigenous aerenchyma contributes to the ability of plants to tolerate low-oxygen soil environments by providing an internal aeration system for the transfer of oxygen from the shoot.…”

Section: Ros Functions In Aerenchyma Formationmentioning

confidence: 99%

Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

Zhou

et al. 2020

Front. Plant Sci.

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Reactive oxygen species (ROS), a type of oxygen monoelectronic reduction product, have a higher chemical activity than O 2. Although ROS pose potential risks to all organisms via inducing oxidative stress, indispensable role of ROS in individual development cannot be ignored. Among them, the role of ROS in the model plant Arabidopsis thaliana is deeply studied. Mounting evidence suggests that ROS are essential for root and root hair development. In the present review, we provide an updated perspective on the latest research progress pertaining to the role of ROS in the precise regulation of root stem cell maintenance and differentiation, redox regulation of the cell cycle, and root hair initiation during root growth. Among the different types of ROS, O 2 •− and H 2 O 2 have been extensively investigated, and they exhibit different gradient distributions in the roots. The concentration of O 2 •− decreases along a gradient from the meristem to the transition zone and the concentration of H 2 O 2 decreases along a gradient from the differentiation zone to the elongation zone. These gradients are regulated by peroxidases, which are modulated by the UPBEAT1 (UPB1) transcription factor. In addition, multiple transcriptional factors, such as APP1, ABO8, PHB3, and RITF1, which are involved in the brassinolide signaling pathway, converge as a ROS signal to regulate root stem cell maintenance. Furthermore, superoxide anions (O 2 •−) are generated from the oxidation in mitochondria, ROS produced during plasmid metabolism, H 2 O 2 produced in apoplasts, and catalysis of respiratory burst oxidase homolog (RBOH) in the cell membrane. Furthermore, ROS can act as a signal to regulate redox status, which regulates the expression of the cell-cycle components CYC2;3, CYCB1;1, and retinoblastoma-related protein, thereby controlling the cell-cycle progression. In the root maturation zone, the epidermal cells located in the H cell position emerge to form hair cells, and plant hormones, such as auxin and ethylene regulate root hair formation via ROS. Furthermore, ROS accumulation can influence hormone signal transduction and vice versa. Data about the association between nutrient stress and ROS signals in root hair development are scarce. However, the fact that ROBHC/RHD2 or RHD6 is specifically expressed in root hair cells and induced by nutrients, may explain the relationship. Future studies should focus on the regulatory

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“…This is the key regulator on initial stage of anoxia signaling that could modulate the expression of downstream anoxia-inducible genes. The identification of RbohD/EIN2-double mutant is responsible for delayed seed germination under submergence [63]. Under submergence RbohD/EIN2-5 mutation can down regulate the root growth as a well-marked phenomenon for quiescence strategy.…”

Section: Signaling Paths Depend On Other Metabolites Paraphernalia Under Anoxiamentioning

confidence: 99%

An updated overview of the physiological and molecular responses of rice to anoxia

Adak,

Saha,

Dolui

et al. 2021

Front. Biosci. (Landmark Ed)

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The promoters have variable elements compatible to other stressors 7. Physiological attribution of ethylene in rice to endure submergence stress 8. Signaling paths depend on other metabolites paraphernalia under anoxia 9. Anoxia compromises with energy turnover and executed in adoption by rice 10. Signaling paths of ethylene perception are diverse with different factors 11. Adoptive strategies in sugar and nitrogen metabolism under anoxia 12. Conclusions 13. Author contributions 14. Ethics approval and consent to participate 15. Acknowledgement 16. Funding 17. Conflict of interest 18. References

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NADPH Oxidase RbohD and Ethylene Signaling are Involved in Modulating Seedling Growth and Survival Under Submergence Stress

Cited by 28 publications

References 52 publications

The hypoxia–reoxygenation stress in plants

The hypoxia–reoxygenation stress in plants

Modulatory Role of Reactive Oxygen Species in Root Development in Model Plant of Arabidopsis thaliana

An updated overview of the physiological and molecular responses of rice to anoxia

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