The NbCBP1-NbSAMS1 Module Promotes Ethylene Accumulation to Enhance <i>Nicotiana benthamiana</i> Resistance to <i>Phytophthora parasitica</i> Under High Potassium Status.

ABSTRACT: Potassium (K) fertilization is crucial for plant resistance to pathogens, but the underlying mechanisms remain unclear. Here, we investigate the molecular mechanism by which the addition of K promotes resistance in Nicotiana benthamiana to Phytophthora parasitica. We found that N. benthamiana with high K content (HK, 52.3 g/kg) produced more ethylene in response to P. parasitica infection, compared to N. benthamiana with low-K content (LK, 22.4 g/kg). An exogenous ethylene application effectively increased resistance in LK N. benthamiana to the level under HK status, demonstrating the involvement of ethylene in the HK-associated resistance in N. benthamiana. Further, transcriptome analysis showed that NbSAMS1, encoding ethylene biosyn

SUBMITTER: Noorin S 

PROVIDER: S-EPMC11818782 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature