Salicylic acid and salicylic acid sensitive and insensitive catalases in different genotypes of chickpea against Fusarium oxysporum f. sp. ciceri

Gayatridevi, S.; Jayalakshmi, S.; Mulimani, V. H.; Sreeramulu, K.

doi:10.1007/s12298-013-0184-4

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…In support, Rao et al (1997) found that SA treatment in A. thaliana elevated the H 2 O 2 content and H 2 O 2 -metabolizing enzymes depended upon the dose of SA concentration and time-duration [ 50 ]. In plants, the various CAT present multiple isoforms with different activities in diverse plant organs [ 53 , 54 , 55 ]. CAT isozymes of chickpea plant were sensitive to SA differently, because SA was a specific inhibitor of CAT activity both in shoot and root [ 56 ].…”

Section: Discussionmentioning

confidence: 99%

Salicylic Acid Induces Resistance in Rubber Tree against Phytophthora palmivora

Deenamo

Kuyyogsuy

Khompatara

et al. 2018

IJMS

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Induced resistance by elicitors is considered to be an eco-friendly strategy to stimulate plant defense against pathogen attack. In this study, we elucidated the effect of salicylic acid (SA) on induced resistance in rubber tree against Phytophthora palmivora and evaluated the possible defense mechanisms that were involved. For SA pretreatment, rubber tree exhibited a significant reduction in disease severity by 41%. Consistent with the occurrence of induced resistance, the pronounced increase in H2O2 level, catalase (CAT) and peroxidase (POD) activities were observed. For defense reactions, exogenous SA promoted the increases of H2O2, CAT, POD and phenylalanine ammonia lyase (PAL) activities, including lignin, endogenous SA and scopoletin (Scp) contents. However, SA had different effects on the activity of each CAT isoform in the particular rubber tree organs. Besides, three partial cDNAs encoding CAT (HbCAT1, HbCAT2 and HbCAT3) and a partial cDNA encoding PAL (HbPAL) were isolated from rubber tree. Moreover, the expressions of HbCAT1, HbPAL and HbPR1 were induced by SA. Our findings suggested that, upon SA priming, the elevated H2O2, CAT, POD and PAL activities, lignin, endogenous SA and Scp contents, including the up-regulated HbCAT1, HbPAL and HbPR1 expressions could potentiate the resistance in rubber tree against P. palmivora.

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Section: Discussionmentioning

confidence: 99%

Salicylic Acid Induces Resistance in Rubber Tree against Phytophthora palmivora

Deenamo

Kuyyogsuy

Khompatara

et al. 2018

IJMS

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“…Monofunctional CAT has a common action that converts H 2 O 2 into H 2 O and O 2 in two steps, while bifunctional, in addition to the usual CAT activity, also exhibits peroxidase activity with an electron donor present [103]. The different response of CAT between shoots and roots is also discussed in the research conducted by Gayatridevi et al [104]. After exposure to salicylic acid and Fusarium sp., they observed a different number of CAT isoforms in shoots and roots in different genotypes of Cicer arientum L. In addition, they determined a significant difference between shoots and roots in sensitivity to salicylic acid, as well as the activities of individual isoforms were completely inhibited by individual treatment.…”

Section: Se Effect On Wheat Oxidative Status and Antioxidative Responsementioning

confidence: 97%

Morpho-Physiological and Antioxidative Responses of Wheat Seedlings to Different Forms of Selenium

Vuković Popović,

Štolfa Čamagajevac,

Vuković

et al. 2023

Agriculture

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Selenium (Se) deficiency in human and animal nutrition is primarily due to low levels of Se in soils. It can be prevented by enriching crops, such as wheat, with Se through agronomic biofortification. Although Se is not essential for plants, it shows a dual effect on their metabolism depending on its concentration. This study aimed to elucidate the impact of five different concentrations (0.4, 4, 20, 40, and 400 mg/kg) of selenate and selenite on the oxidative status and antioxidative response of wheat (Triticum aestivum L., cv. Kraljica) shoots and roots. According to morpho-physiological analyses, selenite was found to have a lower toxicity threshold than selenate. The measurement of oxidative stress biomarkers showed that Se did not cause oxidative damage to wheat seedlings due to the activation of detoxification mechanisms at the biochemical level, which depended on the type of tissue, concentration, and form of applied Se. Treatment with 20 mg/kg of selenate can be recommended for wheat seedling biofortification due to a sufficient increase in Se accumulation in shoots without signs of toxicity. These results contribute to a better understanding of wheat seedlings’ physiological and biochemical responses to Se and the development of more effective biofortification strategies.

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