Rhizosheath drought responsiveness is variety-specific and a key component of belowground plant adaptation

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 242(2024), 2 vom: 28. März, Seite 479-492
1. Verfasser:	Steiner, Franziska A (VerfasserIn)
Weitere Verfasser:	Wild, Andreas J, Tyborski, Nicolas, Tung, Shu-Yin, Koehler, Tina, Buegger, Franz, Carminati, Andrea, Eder, Barbara, Groth, Jennifer, Hesse, Benjamin D, Pausch, Johanna, Lüders, Tillmann, Vahl, Wouter K, Wolfrum, Sebastian, Mueller, Carsten W, Vidal, Alix
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2024
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article crop maize rhizodeposition rhizosphere soil aggregation soil organic carbon soil structure water scarcity Soil mehr... Carbon 7440-44-0

Beschreibung
Zusammenfassung:	© 2024 The Authors New Phytologist © 2024 New Phytologist Foundation. Biophysicochemical rhizosheath properties play a vital role in plant drought adaptation. However, their integration into the framework of plant drought response is hampered by incomplete mechanistic understanding of their drought responsiveness and unknown linkage to intraspecific plant-soil drought reactions. Thirty-eight Zea mays varieties were grown under well-watered and drought conditions to assess the drought responsiveness of rhizosheath properties, such as soil aggregation, rhizosheath mass, net-rhizodeposition, and soil organic carbon distribution. Additionally, explanatory traits, including functional plant trait adaptations and changes in soil enzyme activities, were measured. Drought restricted soil structure formation in the rhizosheath and shifted plant-carbon from litter-derived organic matter in macroaggregates to microbially processed compounds in microaggregates. Variety-specific functional trait modifications determined variations in rhizosheath drought responsiveness. Drought responses of the plant-soil system ranged among varieties from maintaining plant-microbial interactions in the rhizosheath through accumulation of rhizodeposits, to preserving rhizosheath soil structure while increasing soil exploration through enhanced root elongation. Drought-induced alterations at the root-soil interface may hold crucial implications for ecosystem resilience in a changing climate. Our findings highlight that rhizosheath soil properties are an intrinsic component of plant drought response, emphasizing the need for a holistic concept of plant-soil systems in future research on plant drought adaptation
Beschreibung:	Date Completed 22.03.2024 Date Revised 22.03.2024 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.19638