دورية أكاديمية
Arabidopsis Transcriptomics Reveals the Role of Lipoxygenase2 (AtLOX2) in Wound-Induced Responses
| العنوان: | Arabidopsis Transcriptomics Reveals the Role of Lipoxygenase2 (AtLOX2) in Wound-Induced Responses |
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| المؤلفون: | Diljot Kaur, Andreas Schedl, Christine Lafleur, Julian Martinez Henao, Nicole M. van Dam, Jean Rivoal, Jacqueline C. Bede |
| المصدر: | International Journal of Molecular Sciences, Vol 25, Iss 11, p 5898 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Biology (General) LCC:Chemistry |
| مصطلحات موضوعية: | AtLOX2, jasmonate, 13S-lipoxygenase, transcriptome, wounding, Biology (General), QH301-705.5, Chemistry, QD1-999 |
| الوصف: | In wounded Arabidopsis thaliana leaves, four 13S-lipoxygenases (AtLOX2, AtLOX3, AtLOX4, AtLOX6) act in a hierarchical manner to contribute to the jasmonate burst. This leads to defense responses with LOX2 playing an important role in plant resistance against caterpillar herb-ivory. In this study, we sought to characterize the impact of AtLOX2 on wound-induced phytohormonal and transcriptional responses to foliar mechanical damage using wildtype (WT) and lox2 mutant plants. Compared with WT, the lox2 mutant had higher constitutive levels of the phytohormone salicylic acid (SA) and enhanced expression of SA-responsive genes. This suggests that AtLOX2 may be involved in the biosynthesis of jasmonates that are involved in the antagonism of SA biosynthesis. As expected, the jasmonate burst in response to wounding was dampened in lox2 plants. Generally, 1 h after wounding, genes linked to jasmonate biosynthesis, jasmonate signaling attenuation and abscisic acid-responsive genes, which are primarily involved in wound sealing and healing, were differentially regulated between WT and lox2 mutants. Twelve h after wounding, WT plants showed stronger expression of genes associated with plant protection against insect herbivory. This study highlights the dynamic nature of jasmonate-responsive gene expression and the contribution of AtLOX2 to this pathway and plant resistance against insects. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 25115898 1422-0067 1661-6596 |
| Relation: | https://www.mdpi.com/1422-0067/25/11/5898; https://doaj.org/toc/1661-6596; https://doaj.org/toc/1422-0067 |
| DOI: | 10.3390/ijms25115898 |
| URL الوصول: | https://doaj.org/article/f6909557b55c4c7c9f9d21c0575d2b39 |
| رقم الأكسشن: | edsdoj.f6909557b55c4c7c9f9d21c0575d2b39 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25115898 14220067 16616596 |
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| DOI: | 10.3390/ijms25115898 |