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- W4284969573 abstract "Sugar will eventually be exported transporter (SWEET) protein involved in various developmental and stress responses in plants. Here, we report the mechanisms and transcriptional regulatory pathway of the wheat TaSWEET14 in response to cadmium stress. Overexpression of TaSWEET14 improves cadmium stress tolerance and decreases cadmium accumulation in wheat grains. The overexpression of TaSWEET14 in wheat seedlings altered the expression pattern of the ion transporter genes NRAMP5, LCT1, HMA3, and IRT1. These genes were remarkably down-regulated in shoot tissues of TaSWEET14 transgenic wheat lines under cadmium stress. However, there was no significant difference in their expression levels in roots between the wild type (WT) and transgenic plants. In addition, the transgenic plants had a strong ability to remove reactive oxygen species and showed increased activity of antioxidant enzymes. Notably, the transgenic lines had significantly lower cellulose content but higher lignin content than the WT under cadmium stress. The cell wall cadmium content was also significantly higher in the transgenic lines. Lastly, we revealed that TaMYB41 binds directly to the promoter of TaSWEET14 to activate its transcription. This study describes a novel cadmium-responsive regulatory pathway in wheat and demonstrates that TaSWEET14 directly controls wheat cadmium accumulation by altering lignin content." @default.
- W4284969573 created "2022-07-10" @default.
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- W4284969573 date "2022-09-01" @default.
- W4284969573 modified "2023-09-24" @default.
- W4284969573 title "TaSWEET14 confers low cadmium accumulation in wheat and is regulated by TaMYB41" @default.
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- W4284969573 doi "https://doi.org/10.1016/j.envexpbot.2022.104992" @default.
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