Proteomic and physiological approaches reveal new insights for uncover the role of rice thylakoidal APX in response to drought stress

Cunha, Juliana R.; Carvalho, Fernanda Torres de; Neto, Milton Costa Lima; Jardim-Messeder, Douglas; Cerqueira, João Victor Abreu; Martins, Márcio O.; Fontenele, Adilton V.; Margis‐Pinheiro, Márcia; Komatsu, Setsuko; Silveira, Joaquim Albenísio Gomes da

doi:10.1016/j.jprot.2018.08.014

Cited by 19 publications

(15 citation statements)

References 54 publications

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“…Gain-or loss-of- The simultaneous overexpression of chloroplastic APX and SOD in potato (Solanum tuberosum) enhanced drought tolerance (Ahmad et al, 2010). Likewise, silencing of chloroplastic APX resulted in drought sensitivity (Cunha et al, 2019). The performance of rice plants transformed with a chloroplast-targeted pea (Pisum sativum) MnSOD under the control of an oxidative stress-inducible promoter improved under a polyethylene glycol-induced drought stress (Wang et al, 2005).…”

Section: Drought Tolerance Can Be Achieved By Overexpression Of Antioxidant Enzymesmentioning

confidence: 99%

Improving oxidative stress resilience in plants

Kerchev

Breusegem

2021

The Plant Journal

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Originally conceived as harmful metabolic byproducts, reactive oxygen species (ROS) are now recognized as an integral part of numerous cellular programs. Thanks to their diverse physicochemical properties, compartmentalized production, and tight control exerted by the antioxidant machinery they activate signaling pathways that govern plant growth, development, and defense. Excessive ROS levels are often driven by adverse changes in environmental conditions, ultimately causing oxidative stress. The associated negative impact on cellular constituents have been a major focus of decade-long research efforts to improve the oxidative stress resilience by boosting the antioxidant machinery in model and crop species. We highlight the role of enzymatic and non-enzymatic antioxidants as integral factors of multiple signaling cascades beyond their mere function to prevent oxidative damage under adverse abiotic stress conditions.

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Section: Drought Tolerance Can Be Achieved By Overexpression Of Antioxidant Enzymesmentioning

confidence: 99%

Improving oxidative stress resilience in plants

Kerchev

Breusegem

2021

The Plant Journal

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“…Plant △ ∼ 1-pyrroline-5-carboxylic acid synthase ( P5CS ) is a key enzyme involved in proline synthesis, and it is also important for abiotic stress responses ( Li et al, 2018 ; Arabbeigi, Arzani & Majidi, 2019 ). Ascorbate peroxidase ( APX ) plays an important role in plant abiotic stress, and is an important index for measuring stress responsiveness ( Li et al., 2019a ; Li et al., 2019b ; Cunha et al, 2019 ). Our experimental results indicated that the overexpression of SlMYB102 can increase both APX2 and P5CS expression ( Figs.…”

Section: Discussionmentioning

confidence: 99%

SlMYB102 expression enhances low-temperature stress resistance in tomato plants

Wang

Hao

Chen

et al. 2020

PeerJ

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Herein, we identified the tomato SlMYB102 gene as a MYB family transcription factor of the R2R3-MYB subfamily. We additionally determined that the SlMYB102 promoter region contains photoresponsive, abiotic stress-responsive, and hormone-responsive regulatory elements, and we detected higher SlMYB102 expression in the reproductive organs of tomato than that in vegetative organs, with the expression being highest in ripe fruits and in roots. SlMYB102 expression was also shown to be cold-inducible. The protein encoded by SlMYB102 localized to the nucleus wherein it was found to mediate the transcriptional activation of target genes through its C-terminal domain. Overexpression of SlMYB102 in tomato plants conferred enhanced tolerance to cold stress. Under such cold stress conditions, we found that proline levels in the leaves of SlMYB102 overexpressing transgenic plants were higher than those in WT plants. In addition, S1MYB102 overexpression was associated with the enhanced expression of cold response genes including SlCBF1, SlCBF3, SlDREB1, SlDEB2, and SlICE1. We also found that the overexpression of SlMYB102 further enhanced the cold-induced upregulation of SlP5CS and SlAPX2. Taken together, these results suggest that SlMYB102 may be involved in the C-repeat binding transcription factor (CBF) and proline synthesis pathways, thereby improving tomato plant cold resistance.

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“…This results in a high increase in photorespiration from leaves exposed to full sun ( Huang et al, 2016 ), increasing the possibility of water stress. In addition, if the water requirements are not met, the imbalance between the contribution of incident light energy in the leaves and the consumption by metabolic processes can generate photoinhibition, photodamage, and irreversible effects on plant growth and development ( Cunha et al, 2019 ). This problem is of particular importance for Colombia, which can present variations of more than 1,000% of daily light intensity ( Salazar et al, 2018 ), reaching peaks of 2,500 μE m −2 s −1 in some regions.…”

Section: Cacao Agroforestry Systems Vs Monoculture: Use Of Light Wate...mentioning

confidence: 99%

Cacao agroforestry systems beyond the stigmas: Biotic and abiotic stress incidence impact

et al. 2022

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Low technological knowledge in production chains, global climate change, and misinformation are concrete threats to food security. In addition, these combined threats also trigger ecological instability in megadiverse areas of the world, especially in some cacao-producing countries in South America, where this crop plays an important socio-economic role, even being used to replace illicit crops. Accordingly, the use of agroforestry systems approaches has emerged as a good alternative to maintain productivity, add high-value commodities to producers, and provide important ecosystem services for sustainable agriculture. However, limitations associated with the competition for resources between the species composing the system, and the higher incidence of some diseases, have led many producers to abandon this strategy, opting for monoculture. In this review, we seek to gather the main information available in the literature, aiming to answer the question: what is the real scientific evidence that supports the benefits and harms of adopting agroforestry systems in cacao production? We seek to make critical scrutiny of the possible negative effects of certain associations of the agroforestry system with biotic and abiotic stress in cacao. Here, we review the possible competition for light and nutrients and discuss the main characteristics to be sought in cacao genotypes to optimize these inter-specific relationships. In addition, we review the research advances that show the behavior of the main cacao diseases (Witch’s broom disease, frosty pod rot, black pod rot) in models of agroforestry systems contrasted with monoculture, as well as the optimization of agronomic practices to reduce some of these stresses. This compendium, therefore, sheds light on a major gap in establishing truly sustainable agriculture, which has been treated much more from the perspective of negative stigma than from the real technological advantages that can be combined to the benefit of a balanced ecosystem with generating income for farmers.

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Proteomic and physiological approaches reveal new insights for uncover the role of rice thylakoidal APX in response to drought stress

Cited by 19 publications

References 54 publications

Improving oxidative stress resilience in plants

Improving oxidative stress resilience in plants

SlMYB102 expression enhances low-temperature stress resistance in tomato plants

Cacao agroforestry systems beyond the stigmas: Biotic and abiotic stress incidence impact

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