Uncovering root compaction response mechanisms : new insights and opportunities

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 75(2024), 2 vom: 10. Jan., Seite 578-583
1. Verfasser:	Pandey, Bipin K (VerfasserIn)
Weitere Verfasser:	Bennett, Malcolm J
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't ABA auxin ethylene root responses soil compaction Soil 91GW059KN7 Ethylenes mehr... Water 059QF0KO0R Gases

Beschreibung
Zusammenfassung:	© The Author(s) 2023. Published by Oxford University Press on behalf of the Society for Experimental Biology. 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
Beschreibung:	Date Completed 11.01.2024 Date Revised 26.07.2024 published: Print Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/erad389