TCP19 regulates nitrogen-dependent sheath blight susceptibility by modulating nitrogen uptake and signalling in rice.

ABSTRACT: The excessive application of nitrogen fertilization improves rice yield, but increases disease severity. However, the underlying molecular mechanisms remain unclear. Here, we conducted a comparative analysis of nitrogen- and R. solani-regulated transcriptomes and identified TEOSINTE BRANCHED, CYC, PCF 19 (TCP19), that was a key regulator of nitrogen use efficiency (NUE), as a potential link between nitrogen metabolism and sheath blight (ShB) regulation. Inoculation of tcp19 and TCP19 OXs with R. solani revealed that TCP19 negatively regulated ShB resistance independent of nitrogen conditions. TCP19 expression was suppressed under moderate nitrogen (MN) but induced under high nitrogen (HN) conditions. Furthermore, TCP19 directly activated Dense and Erect Panicle 1 (DEP1) while repressing ni

SUBMITTER: Zhou T 

PROVIDER: S-EPMC12392934 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature