Physiological and antioxidant insights into common bean resistance to common bacterial blight

Silva, L.C.; Debona, Daniel; Aucique‐Pérez, Carlos Eduardo; Oliveira, José Rogério de; Júnior, J.I. Ribeiro; Brás, V. V.; Rodrigues, Fabrício Ávila

doi:10.1016/j.pmpp.2020.101505

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…As observed in the study results, H 2 O 2 concentrations were more evident in all inoculated cultivars compared with noninoculated cultivars; however, the behavior of MDA did not have a direct relation with this increase and may be insufficient to cause damage to cell membranes via lipid peroxidation. The products of lipid peroxidation of the membrane, such as MDA, can be an important indicator of the extent of cell damage caused by oxidative stress induced by pathogens (Silva et al 2020)a fact that was not observed in the present study; however, interestingly, this fact may be associated to the ability of this nematode to alter the initial signaling pathways of defense in plants to establish its feeding site (Goverse & Smant 2014).…”

Section: Discussioncontrasting

confidence: 48%

Response of Soybean Cultivars to Oxidative Stress caused by Meloidogyne javanica

SANTOS,

COSTA,

MINUZZI

et al. 2023

An. Acad. Bras. Ciênc.

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The present study aimed to investigate the response of soybean cultivars with different susceptibility levels to the root-knot nematode Meloidogyne javanica at varied time intervals by analyzing the initial plant-nematode interaction using antioxidant enzymes as oxidative stress markers. A 4 × 4 × 2 factorial method with 5 repetitions was used to analyze 4 soybean cultivars at 4 different collection times-6, 12, 24, and 48 hwith and without M. javanica inoculation. The parameters evaluated were the activities of antioxidant enzymes phenol peroxidase (POX) and ascorbate peroxidase (APX); the concentrations of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA); and the number of M. javanica juveniles penetrated into each plant. H 2 O 2 concentration varied among the cultivars with and without inoculation and at different collection times as indicated by MDA concentration and POX and APX activities, demonstrating a rapid response of the host to an infection by M. javanica. Oxidative stress caused by M. javanica did not vary among the soybean cultivars regardless of their susceptibility level; however, the antioxidant enzymes POX and APX responded according to the susceptibility level of the cultivars.

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Section: Discussioncontrasting

confidence: 48%

Response of Soybean Cultivars to Oxidative Stress caused by Meloidogyne javanica

SANTOS,

COSTA,

MINUZZI

et al. 2023

An. Acad. Bras. Ciênc.

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“…Finally, it was worth noting that for determination of the activities of defense enzymes, we designed relatively longer sampling time intervals according to some previous reports [8,43,44], meanwhile considering delayed changes in enzyme activity might happen as previous study reported possibly due to gene translation and modification process [45]. However, as Figures 3 and 4 showed, the activities of these defense enzymes (except for CAT) in the R genotype rapidly increased and peaked at 4 dai, meaning these defense enzymes exert their function mainly within 96 h after inoculation.…”

Section: Discussionmentioning

confidence: 99%

Physiological and Gene Expression Analysis of Herbaceous Peony Resistance to Alternaria tenuissima Infection

Zhu

et al. 2023

Horticulturae

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Leaf spot disease caused by Alternaria pathogens seriously threatens peony production. The physiological mechanism of peony resistance to the pathogen is little reported. This study aimed to reveal the defensive mechanism of peonies in response to the pathogen Alternaria tenuissima. The disease-resistant (R) variety ‘Zi Fengyu’ and susceptible (S) variety ‘Heihai Botao’ were employed, and some parameters in the leaves were analyzed after inoculation with A. tenuissima, mainly including the hypersensitive response (HR), activity of defensive enzymes, and expression of disease-resistance genes. The results showed that compared with the responses in the S genotype, HR occurred more rapidly in the R genotype. Meanwhile, the activity of antioxidant enzymes (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase) and other two defense enzymes (polyphenol oxidase and phenylalanine ammonia-lyase) increased more significantly, and the expression of pathogenesis-related (PR) genes (PlPR1, PlPR2, PlPR4B, PlPR5, and PlPR10) and two WRKY genes (PlWRKY13 and PlWRKY65) was more strongly induced. These responses collectively contributed to the disease resistance of the R genotype. These findings provided a theoretical basis for understanding the intrinsic mechanism of peony resistance to Alternaria leaf spot disease and breeding the disease-resistant peony varieties using a molecular approach.

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“…For example, in the study of the relationship between common bean and Xanthomonas axonopodis var. fuscans , higher POD activity was recorded in the pathogen infiltrated cotyledonary leaves than in control but greater activities occurred for the resistant cultivar than for the susceptible cultivar [ 31 ]. As shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Protocatechuic acid, ferulic acid and relevant defense enzymes correlate closely with walnut resistance to Xanthomonas arboricola pv. juglandis

Zhang

Yang

et al. 2022

BMC Plant Biol

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Background Juglans regia L. is an important nut tree that has a wide range of distribution in temperate regions of the world. In some walnut orchards, walnut blight can become a problematic disease that affects the growth of walnut trees. To explore the correlation between biochemical response and walnut resistance, we inoculated four walnut cultivars with Xanthomonas arboricola pv. juglandis (Xaj). The walnut cultivars were, namely, ‘Xiangling’, ‘Xiluo 2’, ‘Yuanfeng’ and ‘Xifu 2’. Total phenol content (TPC) and total flavonoid content (TFC) were measured, whereby nine major phenolic compounds and several relevant enzymes were identified. Results The results showed that the most resistant and susceptible walnut varieties were ‘Xiluo 2’ and ‘Xifu 2’ respectively. The reaction of walnut to Xaj was characterized by the early accumulation of phenolic compounds in the infected site. After inoculation with Xaj, we found that the resistant variety ‘Xiluo 2’ show the significant differences with other varieties at different time points through the determination of related antioxidant enzymes such as catalase (CAT) and peroxidase (POD). Meanwhile, the phenylalanine ammonia lyase (PAL) of ‘Xiluo 2’ increased significantly at 8 day post infection (dpi) and made differences from the control samples, while other varieties changed little. And the polyphenol oxidase (PPO) was significantly higher than in the control at 16 dpi, maintaining the highest and the lowest activity in ‘Xiluo 2’ and ‘Xifu 2’ respectively. It was also found that the content of protocatechuic acid in all cultivars increased significantly at 4 dpi, and ‘Xiluo 2’ was significantly higher than that of the control. In the early stage of the disease, ferulic acid content increased significantly in ‘Xiluo 2’. Conclusion Our findings confirmed that the metabolism of phenolic compounds and related defense enzymes are of great significance in the response of walnut to Xaj.

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Physiological and antioxidant insights into common bean resistance to common bacterial blight

Cited by 7 publications

References 40 publications

Response of Soybean Cultivars to Oxidative Stress caused by Meloidogyne javanica

Response of Soybean Cultivars to Oxidative Stress caused by Meloidogyne javanica

Physiological and Gene Expression Analysis of Herbaceous Peony Resistance to Alternaria tenuissima Infection

Protocatechuic acid, ferulic acid and relevant defense enzymes correlate closely with walnut resistance to Xanthomonas arboricola pv. juglandis

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