Differential nuclease sensitivity profiling uncovers a drought responsive change in maize leaf chromatin structure for two large retrotransposon derivatives, Uloh and Vegu
| Autor: | Hank W. Bass, Minkyu Park, Oghenekome Onokpise, ZaDarreyal J. Wiggins, Violeta Tsolova, Delvin S. Williams, Zachary M. Turpin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Retrotransposon
Plant Science differential nuclease sensitivity maize Biochemistry Genetics and Molecular Biology (miscellaneous) chemistry.chemical_compound A-DNA Ecology Evolution Behavior and Systematics Original Research Genetics Nuclease Ecology biology fungi drought stress Botany food and beverages Chromatin LTR‐retrotransposon Histone chemistry QK1-989 biology.protein H3K4me3 chromatin micrococcal nuclease DNA Micrococcal nuclease |
| Zdroj: | Plant Direct, Vol 5, Iss 8, Pp n/a-n/a (2021) Plant Direct |
| ISSN: | 2475-4455 |
| Popis: | Plant chromatin dynamics are generally recognized as playing a role in the genomic response to environmental stress. Although stress‐induced transcriptional activities of LTR‐retrotransposons have been reported, whether the stress response can be detected at the level of chromatin structure for LTR‐retrotransposons is largely unknown. Using differential nuclease sensitivity profiling, we identified that two out of 29 maize LTR‐retrotransposon families change their chromatin structure in response to drought stress in leaf tissue. The two LTR‐retrotransposon families, uloh and vegu, are classified as nonautonomous LTR‐retrotransposons. Differently from other families, the chromatin structure of these two families shifted from more open in normal conditions to more closed following drought stress. Although uloh and vegu lack sequence similarity, most of them shared an intriguing feature of having a new and uncharacterized insertion of a DNA sequence near one side of an LTR. In the uloh family, nine members with a strong drought response also exhibited a drought‐induced reduction of published H3K4me3 histone modification in the inserted DNA region, implicating this modification in the chromatin structural changes. Our results provide new insight into how LTR‐retrotransposons can alter their chromatin structure following stress response in plants. |
| Databáze: | OpenAIRE |
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