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The role of transposon inverted repeats in balancing drought tolerance and yield-related traits in maize

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Title The role of transposon inverted repeats in balancing drought tolerance and yield-related traits in maize
 
Creator Sun, Xiaopeng
Xiang, Yanli
Dou, Nannan
Zhang, Hui
Pei, Surui
Valdes Franco, J. Arcadio
Menon, Mitra
Monier, Brandon
Ferebee. Taylor
Liu, Tao
Liu, Sanyang
Gao, Yuchi
Wang, Jubin
Terzaghi, William
Jianbing Yan
Hearne, Sarah
Li, Lin
Li, Feng
Dai, Mingqiu
 
Subject agronomy
crops
genomes
plants
drought tolerance
genomics
transcriptome
transposons
drought
maize
 
Description The genomic basis underlying the selection for environmental adaptation and yield-related traits in maize remains poorly understood. Here we carried out genome-wide profiling of the small RNA (sRNA) transcriptome (sRNAome) and transcriptome landscapes of a global maize diversity panel under dry and wet conditions and uncover dozens of environment-specific regulatory hotspots. Transgenic and molecular studies of Drought-Related Environment-specific Super eQTL Hotspot on chromosome 8 (DRESH8) and ZmMYBR38, a target of DRESH8-derived small interfering RNAs, revealed a transposable element-mediated inverted repeats (TE-IR)-derived sRNA- and gene-regulatory network that balances plant drought tolerance with yield-related traits. A genome-wide scan revealed that TE-IRs associate with drought response and yield-related traits that were positively selected and expanded during maize domestication. These results indicate that TE-IR-mediated posttranscriptional regulation is a key molecular mechanism underlying the tradeoff between crop environmental adaptation and yield-related traits, providing potential genomic targets for the breeding of crops with greater stress tolerance but uncompromised yield.
 
Date 2022-10-13
2023-01-05T08:35:47Z
2023-01-05T08:35:47Z
 
Type Journal Article
 
Identifier Sun, X., Xiang, Y., Dou, N., Zhang, H., Pei, S., Franco, A. V., Menon, M., Monier, B., Ferebee, T., Liu, T., Liu, S., Gao, Y., Wang, J., Terzaghi, W., Yan, J., Hearne, S., Li, L., Li, F. and Dai, M. 2022. The role of transposon inverted repeats in balancing drought tolerance and yield-related traits in maize. Nature Biotechnology
1546-1696
https://hdl.handle.net/10568/126591
https://doi.org/10.1038/s41587-022-01470-4
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Source Nature Biotechnology