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Por um escritor misterioso
Last updated 08 setembro 2024
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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.
Ijms Free Full Text Hyaluronic Acid Influence On Normal And
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Ijms Free Full Text Preliminary Rna Seq Analysis Of Long Non
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IJMS Free Full Text A High Molecular Mass 26650
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IJMS, Free Full-Text
Ijms Free Full Text Neural And Hormonal Basis Of 49680
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IJMS, Free Full-Text
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IJMS, Free Full-Text
![IJMS, Free Full-Text](https://www.mdpi.com/ijms/ijms-16-02130/article_deploy/html/images/ijms-16-02130-g001b-1024.png)
IJMS, Free Full-Text
Ijms Free Full Text Neural And Hormonal Basis Of 49680
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