2020
DOI: 10.3390/genes11111263
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Expression of Genes Encoding Manganese Peroxidase and Laccase of Ganoderma boninense in Response to Nitrogen Sources, Hydrogen Peroxide and Phytohormones

Abstract: Ganoderma produces lignolytic enzymes that can degrade the lignin component of plant cell walls, causing basal stem rot to oil palms. Nitrogen sources may affect plant tolerance to root pathogens while hydrogen peroxide (H2O2), salicylic acid (SA) and jasmonic acid (JA) play important roles in plant defense against pathogens. In this study, we examined the expression of genes encoding manganese peroxidase (MnP) and laccase (Lac) in Ganoderma boninense treated with different nitrogen sources (ammonium nitrate, … Show more

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Cited by 11 publications
(10 citation statements)
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“…In addition to metal ions, we found that the static liquid culture also stimulated TtMnP gene expression. It resulted in higher enzyme activity (15 U/mL toward 2,6-DMP), but shake liquid culture is beneficial to the induction of hypha growth (Figures 5 and 6), confirmed by MnP production in Ganoderma boninense with the highest MnP activity of 18-110 U/mL toward Mn 2+ [30]. In our previous study with T. trogii S0301 strain, no MnP activity was detected in shake liquid cultures [24].…”
Section: Discussionmentioning
confidence: 79%
“…In addition to metal ions, we found that the static liquid culture also stimulated TtMnP gene expression. It resulted in higher enzyme activity (15 U/mL toward 2,6-DMP), but shake liquid culture is beneficial to the induction of hypha growth (Figures 5 and 6), confirmed by MnP production in Ganoderma boninense with the highest MnP activity of 18-110 U/mL toward Mn 2+ [30]. In our previous study with T. trogii S0301 strain, no MnP activity was detected in shake liquid cultures [24].…”
Section: Discussionmentioning
confidence: 79%
“…G. boninense produces lignin-degrading enzymes such as laccases, manganese peroxidases (Mn-P), and lignin peroxidases (Li-P) to infect and degrade cell wall lignin of oil palm [22]. The decaying activity of G. boninense is influenced by different factors including nitrogen sources, hydrogen peroxide (H2O2), and phenolic compounds [6,21]. Ligninolytic fungi could secrete (H2O2) and the secretion increased in an incompatible interaction (antagonism) between two fungal species [23,24].…”
Section: Discussionmentioning
confidence: 99%
“…The fungus degrades the lignin compositions of cortex cell tissues and kills oil palm trees. Ganoderma produces ligninolytic enzymes such as laccase and manganese peroxidase that can degrade the lignin component of plant cell walls, causing nutrient leakage of the affected palm [6]. Ligninolytic enzymes and other cell wall degrading enzymes were the key enzymes during both the necrotrophic phase of Ganoderma pathogenesis and the saprophytic life cycle [7,8].…”
Section: Introductionmentioning
confidence: 99%
“…The SSF condition causes carbon starvation in the system and eventually encourages the white-rot fungus to efficiently degrade the lignin to access the cellulose component in order to cope with starvation (Vasina et al, 2017;Ho et al, 2020). This justifies the secretion of a low level of ligninolytic enzymes at the beginning of the incubation periods with a slow increase over time (day 20 and day 40).…”
Section: Ligninolytic Enzymes Secretion In Association With the Aggre...mentioning
confidence: 99%