Expression profiles of phytosulfokine signalling components in sorghum drought stress-adaptive response.

Goche, Tatenda; Ngara, Rudo; Chivasa, Stephen

Abstract

Phytosulfokine (PSK) signalling promotes drought adaptation in drought-sensitive plants. However, whether naturally drought-tolerant plants deploy PSK signalling in drought is unknown. We are using two sorghum varieties with different drought response phenotypes to investigate tolerance mechanisms. We show that PSK signalling components have high constitutive expression before stress in the drought-tolerant variety. In contrast, gene expression is low in the drought-sensitive variety and is induced after drought exposure. Ability of the drought-tolerant sorghum variety to maintain elevated PSK signalling under optimal water availability suggests that genetic and physiological factors driving drought tolerance may be linked to elevated constitutive PSK signalling.

Citation

Goche, T., Ngara, R., & Chivasa, S. (2025). Expression profiles of phytosulfokine signalling components in sorghum drought stress-adaptive response. microPublication Biology, 2025, https://doi.org/10.17912/micropub.biology.001284

• Journal Article Type: Article
• Acceptance Date: Jan 27, 2025
• Online Publication Date: Jan 28, 2025
• Publication Date: Jan 28, 2025
• Deposit Date: Mar 10, 2025
• Publicly Available Date: Mar 10, 2025
• Journal: microPublication biology
• Electronic ISSN: 2578-9430
• Peer Reviewed: Peer Reviewed
• Volume: 2025
• DOI: https://doi.org/10.17912/micropub.biology.001284
• Public URL: https://durham-repository.worktribe.com/output/3561844