Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Fernandes, Luiz Henrique Monteiro; Silveira, Helbert Rezende de Oliveira; Souza, Kamila Rezende Dázio de; Resende, Mário Lúcio Vilela de; Alves, José Donizeti

doi:10.4236/ajps.2014.525387

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…These enzymes clean ROS and protect cells from oxidative damage (Hossain and Uddin 2011). Fernandes et al (2014) found increased activity in SOD, CAT and APX enzymes in coffee seedlings after MnPhi spraying in the absence of pathogen. The current study showed that MnPhi induced increase in SOD and APX activity in leaves of coffee seedlings after infection with H. vastatrix.…”

Section: Discussionmentioning

confidence: 82%

Manganese Phosphite in Coffee Defence against Hemileia vastatrix, the Coffee Rust Fungus: Biochemical and Molecular Analyses

Monteiro

Resende

Valente

et al. 2016

Journal of Phytopathology

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Phosphites (Phi) are inorganic salts of phosphorous acid that have been used as resistance elicitors to activate mechanisms underlying plant defence. This study assessed the effectiveness of manganese phosphite (MnPhi) for the management of rust (Hemileia vastatrix) on coffee seedlings. The effect of this compound on the induction of resistance was also measured by the expression of defence‐related genes such as POX (peroxidase), CAT (catalase), GLU (β‐1.3‐glucanase) and PAL (phenylalanine ammonia‐lyase) and by the activity of defence enzymes such as ascorbate peroxidase (APX), superoxide dismutase (SOD) and polyphenol oxidase (PPO). Foliar sprayings of MnPhi on coffee seedlings provided 63% control of rust severity. This compound induced defence responses in seedlings with increased transcription of genes POX, CAT, GLU and PAL in non‐inoculated plants and increased activity of APX, SOD and PPO enzymes in plants inoculated with H. vastatrix and in non‐inoculated plants. It is suggested that MnPhi can induce resistance in coffee seedlings.

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Section: Discussionmentioning

confidence: 82%

Manganese Phosphite in Coffee Defence against Hemileia vastatrix, the Coffee Rust Fungus: Biochemical and Molecular Analyses

Monteiro

Resende

Valente

et al. 2016

Journal of Phytopathology

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“…In coffee leaves treated with phosphites (inorganic salts of phosphorous acid), the induction of the expression of defense-related genes, such as peroxidase, catalase, β-1.3glucanase and PAL, was reported [199]. Biochemical studies further confirmed the increase in the activity of antioxidant enzymes (ascorbate peroxidase, superoxide dismutase, catalase and polyphenol oxidase) [199,204] and the photosynthetic rates of treated leaves [204]. Recently, a physiological (leaf gas-exchange), biochemical (enzymatic) and proteomic study was undertaken.…”

Section: Systemic-acquired Resistance (Sar) In Coffeementioning

confidence: 90%

An Overview of the Mechanisms Involved in Coffee-Hemileia vastatrix Interactions: Plant and Pathogen Perspectives

et al. 2022

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Coffee is one of the most consumed beverages in the world. It is also one of the most globally traded commodities. Coffee leaf rust (CLR), caused by the biotrophic fungus Hemileia vastatrix, is the most important disease affecting Arabica coffee growing worldwide, leading to significant yield losses if no control measures are applied. A deep understanding of the complex mechanisms involved in coffee-H. vastatrix interactions, such as the pathogen variability and the mechanisms governing plant resistance and susceptibility, is required to breed efficiently for durable resistance and design new approaches for crop protection. Here we summarize our current understanding across multiple areas related to pathogen infection, variability and candidate effectors, breeding for disease resistance, and the various components of the coffee immune system, by reviewing a comprehensive body of research on CLR and the advances recently made. We also update information about the defense responses activated by the application of plant resistance inducers, a promising alternative to fungicides in the control of CLR. Moreover, we identify and discuss future directions for further research.

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“…Phi supplementation in citrus byproducts regulates the antioxidant system by increasing the activity of SOD, CAT, and APX after four treatments on coffee seedlings. In addition, increasing the antioxidant content continuously evolves in defense of the PS electron transport chain by maintaining better levels of the NADP + and inhibiting the composition of toxic radicals ( Fernandes et al, 2014 ). These results show that proper use of Phi can be useful to improve the antioxidant defense mechanism of plants under pathogen stress.…”

Section: Phi-triggered Plant Defense Response Against Biotic Stressesmentioning

confidence: 99%

ROS and Oxidative Response Systems in Plants Under Biotic and Abiotic Stresses: Revisiting the Crucial Role of Phosphite Triggered Plants Defense Response

et al. 2021

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Phosphite (Phi) is a chemical analog of orthophosphate [HPO43−]. It is a systemic pesticide generally known to control the prevalence of oomycetes and soil-borne diseases such as Phytophthora, Pythium, and Plasmopora species. Phi can also control disease symptoms and the spread of pathogenic bacteria, fungi, and nematodes. Phi plays critical roles as a fungicide, pesticide, fertilizer, or biostimulator. Overall, Phi can alleviate the severity of the disease caused by oomycete, fungi, pathogenic bacteria, and nematodes (leave, stem, fruit, tuber, and root) in various plants (vegetables, fruits, crops, root/tuber crops, ornamental plants, and forests). Advance research in molecular, physiological, and biochemical approaches has approved the key role of Phi in enhancing crop growth, quantity, and quality of several plant species. Phi is chemically similar to orthophosphate, and inside the cells, it is likely to get involved in different features of phosphate metabolism in both plants and pathogens. In plants, a range of physiobiochemical alterations are induced by plant pathogen stress, which causes lowered photosynthesis activities, enzymatic activities, increased accumulation of reactive oxygen species (ROS), and modification in a large group of genes. To date, several attempts have been made to study plant-pathogen interactions with the intent to minimize the loss of crop productivity. Phi’s emerging function as a biostimulant in plants has boost plant yield and tolerance against various stress factors. This review discusses Phi-mediated biostimulant effects against biotic and abiotic stresses.

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Inductors of Resistance and Their Role in Photosynthesis and Antioxidant System Activity of Coffee Seedlings

Cited by 6 publications

References 25 publications

Manganese Phosphite in Coffee Defence against Hemileia vastatrix, the Coffee Rust Fungus: Biochemical and Molecular Analyses

Manganese Phosphite in Coffee Defence against Hemileia vastatrix, the Coffee Rust Fungus: Biochemical and Molecular Analyses

An Overview of the Mechanisms Involved in Coffee-Hemileia vastatrix Interactions: Plant and Pathogen Perspectives

ROS and Oxidative Response Systems in Plants Under Biotic and Abiotic Stresses: Revisiting the Crucial Role of Phosphite Triggered Plants Defense Response

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