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|a 10.1093/jxb/erad389
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|a eng
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|a Pandey, Bipin K
|e verfasserin
|4 aut
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|a Uncovering root compaction response mechanisms
|b new insights and opportunities
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|c 2024
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|a Text
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|a Date Completed 11.01.2024
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|a Date Revised 26.07.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2023. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Compaction disrupts soil structure, reducing root growth, nutrient and water uptake, gas exchange, and microbial growth. Root growth inhibition by soil compaction was originally thought to reflect the impact of mechanical impedance and reduced water availability. However, using a novel gas diffusion-based mechanism employing the hormone ethylene, recent research has revealed that plant roots sense soil compaction. Non-compacted soil features highly interconnected pore spaces that facilitate diffusion of gases such as ethylene which are released by root tips. In contrast, soil compaction stress disrupts the pore network, causing ethylene to accumulate around root tips and trigger growth arrest. Genetically disrupting ethylene signalling causes roots to become much less sensitive to compaction stress. Such new understanding about the molecular sensing mechanism and emerging root anatomical traits provides novel opportunities to develop crops resistant to soil compaction by targeting key genes and their signalling pathways. This expert view discusses these recent advances and the molecular mechanisms associated with root-soil compaction responses
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|a ethylene
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|a root responses
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|a soil compaction
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|a Bennett, Malcolm J
|e verfasserin
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 75(2024), 2 vom: 10. Jan., Seite 578-583
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