Convergent antisense transcription primes hosting genes for stress responsiveness in plants. Zacharaki, V., Quevedo, M., Nardeli, S. M., Meena, S. K., Monte, E., & Kindgren, P. Molecular Plant, October, 2025. ![Convergent antisense transcription primes hosting genes for stress responsiveness in plants. [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Plants need to constantly surveil their surroundings to adapt to environmental fluctuations, which they achieve primarily through transcriptional reprogramming. Thus, plants are excellent models for identifying novel transcriptional regulatory mechanisms. Here, we characterize regulation conveyed by long non-coding transcription that initiates on the complementary strand in the 5ʹ-end of coding genes (Convergent Antisense transcription (CASt)). In Arabidopsis, CASt is associated with stress-responsive genes that are highly expressed. Our analysis shows that CASt depends on a specific gene architecture that is evolutionarily conserved in higher plants. CASt is present in genes with an extended first intron and over-represented in genes with a transporter function in Arabidopsis, such as the AAP transporter family. Experimental evidence points to a role for CASt in priming their host genes for stress-responsiveness in evolutionary divergent plant species. Furthermore, we were able to predict stress responsiveness in AAP rice genes based on the presence of a long first intron and CASt. Overall, we show an evolutionary strategy and regulatory mechanism specific to plants for enhancing stress responsiveness through modification of gene architecture and antisense transcription.
@article{zacharaki_convergent_2025,
title = {Convergent antisense transcription primes hosting genes for stress responsiveness in plants.},
issn = {1674-2052},
url = {https://www.sciencedirect.com/science/article/pii/S167420522500351X},
doi = {10.1016/j.molp.2025.10.001},
abstract = {Plants need to constantly surveil their surroundings to adapt to environmental fluctuations, which they achieve primarily through transcriptional reprogramming. Thus, plants are excellent models for identifying novel transcriptional regulatory mechanisms. Here, we characterize regulation conveyed by long non-coding transcription that initiates on the complementary strand in the 5ʹ-end of coding genes (Convergent Antisense transcription (CASt)). In Arabidopsis, CASt is associated with stress-responsive genes that are highly expressed. Our analysis shows that CASt depends on a specific gene architecture that is evolutionarily conserved in higher plants. CASt is present in genes with an extended first intron and over-represented in genes with a transporter function in Arabidopsis, such as the AAP transporter family. Experimental evidence points to a role for CASt in priming their host genes for stress-responsiveness in evolutionary divergent plant species. Furthermore, we were able to predict stress responsiveness in AAP rice genes based on the presence of a long first intron and CASt. Overall, we show an evolutionary strategy and regulatory mechanism specific to plants for enhancing stress responsiveness through modification of gene architecture and antisense transcription.},
urldate = {2025-10-13},
journal = {Molecular Plant},
author = {Zacharaki, Vasiliki and Quevedo, Marti and Nardeli, Sarah Muniz and Meena, Shiv Kumar and Monte, Elena and Kindgren, Peter},
month = oct,
year = {2025},
keywords = {Antisense transcription, Arabidopsis, Cold acclimation, Transporters},
}
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Here, we characterize regulation conveyed by long non-coding transcription that initiates on the complementary strand in the 5ʹ-end of coding genes (Convergent Antisense transcription (CASt)). In Arabidopsis, CASt is associated with stress-responsive genes that are highly expressed. Our analysis shows that CASt depends on a specific gene architecture that is evolutionarily conserved in higher plants. CASt is present in genes with an extended first intron and over-represented in genes with a transporter function in Arabidopsis, such as the AAP transporter family. Experimental evidence points to a role for CASt in priming their host genes for stress-responsiveness in evolutionary divergent plant species. 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Thus, plants are excellent models for identifying novel transcriptional regulatory mechanisms. Here, we characterize regulation conveyed by long non-coding transcription that initiates on the complementary strand in the 5ʹ-end of coding genes (Convergent Antisense transcription (CASt)). In Arabidopsis, CASt is associated with stress-responsive genes that are highly expressed. Our analysis shows that CASt depends on a specific gene architecture that is evolutionarily conserved in higher plants. CASt is present in genes with an extended first intron and over-represented in genes with a transporter function in Arabidopsis, such as the AAP transporter family. Experimental evidence points to a role for CASt in priming their host genes for stress-responsiveness in evolutionary divergent plant species. 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