Lipid remodeling of contrasting maize (Zea mays L.) hybrids under repeated drought

2023 | journal article. A publication with affiliation to the University of Göttingen.

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​Lipid remodeling of contrasting maize (Zea mays L.) hybrids under repeated drought​
Kränzlein, M.; Schmöckel, S. M.; Geilfus, C.-M.; Schulze, W. X.; Altenbuchinger, M.; Hrenn, H. & Roessner, U. et al.​ (2023) 
Frontiers in Plant Science14 art. 1050079​.​ DOI: https://doi.org/10.3389/fpls.2023.1050079 

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Authors
Kränzlein, Markus; Schmöckel, Sandra M.; Geilfus, Christoph-Martin; Schulze, Waltraud X.; Altenbuchinger, Michael; Hrenn, Holger; Roessner, Ute; Zörb, Christian
Abstract
The role of recovery after drought has been proposed to play a more prominent role during the whole drought-adaption process than previously thought. Two maize hybrids with comparable growth but contrasting physiological responses were investigated using physiological, metabolic, and lipidomic tools to understand the plants’ strategies of lipid remodeling in response to repeated drought stimuli. Profound differences in adaptation between hybrids were discovered during the recovery phase, which likely gave rise to different degrees of lipid adaptability to the subsequent drought event. These differences in adaptability are visible in galactolipid metabolism and fatty acid saturation patterns during recovery and may lead to a membrane dysregulation in the sensitive maize hybrid. Moreover, the more drought-tolerant hybrid displays more changes of metabolite and lipid abundance with a higher number of differences within individual lipids, despite a lower physiological response, while the responses in the sensitive hybrid are higher in magnitude but lower in significance on the level of individual lipids and metabolites. This study suggests that lipid remodeling during recovery plays a key role in the drought response of plants.
Issue Date
2023
Journal
Frontiers in Plant Science 
eISSN
1664-462X
Sponsor
Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg http://dx.doi.org/10.13039/501100003542

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