Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 72, Issue 7, Pages 2269-2272Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erab015
Keywords
Aluminium resistance; aluminium signal transduction; Arabidopsis thaliana; GLUTAMATE DEHYDROGENASE (GDH); SENSITIVE TO PROTEIN RHIZOTOXICITY 1 (STOP1); STOP1-regulated genes
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Identification of direct targets of STOP1 transcription factor is crucial for understanding Al-induced expression patterns of STOP1-regulated genes. The study demonstrated the necessity of GDH1 and GDH2 for Al resistance, and revealed the involvement of the PI-PLC pathway in regulating STOP1 protein accumulation in response to Al stress. Further exploration of the Al signaling pathway holds promise for enhancing crop resistance to Al stress.
Identifying direct targets of the transcription factor SENSITIVE TO PROTEIN RHIZOTOXICITY 1 (STOP1) is required for understanding different aluminium (Al)-induced expression patterns of STOP1-regulated genes. In an elegant study, Tokizawa et al. (2021) have now identified or clarified direct and indirect targets of STOP1 and demonstrated that two direct targets, GDH1 and GDH2, are required for Al resistance. They also found that the phosphatidylinositol-specific phospholipase C (PI-PLC) pathway is involved in the regulation of Al-induced STOP1 protein accumulation. Further development of the Al signalling pathway will help to engineer crop resistance to Al stress.
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