Nodule-specific <i>AhPUGN1.1</i> positively regulates nodulation in peanuts.

ABSTRACT: Peanut (Arachis hypogaea) is a widely cultivated legume crop that can fix nitrogen by forming root nodules with compatible rhizobia. The initiation and formation of these nodules require complex molecular communication between legumes and rhizobia, involving the precise regulation of multiple legume genes. However, the mechanism underlying nodulation in peanuts remains poorly understood. In this study, we identified a gene associated with nodulation in peanuts, named Peanut unique gene for nodulation 1.1 (AhPUGN1.1). Multiple lines of evidence indicate that AhPUGN1.1 is primarily expressed in peanut nodules. Silencing or knocking out AhPUGN1.1 in peanut resulted in fewer nodules, as well as lower fresh weight and nitrogenase activity, while overexpressing

SUBMITTER: He H 

PROVIDER: S-EPMC12454708 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature