Phenazine-1-carboxylic acid (PCA) produced by Paraburkholderia phenazinium CK-PC1 aids postgermination growth of Xyris complanata seedlings with germination induced by Penicillium rolfsii Y-1

Abstract Symbiosis of Penicillium rolfsii Y-1 is essential for the seed germination Hawaii yellow-eyed grass (Xyris complanata). However, local soil where plants grow naturally often suppresses radicle growth seedlings. This was drastically restored by coinoculation Paraburkholderia phenazinium isolate CK-PC1, which a rhizobacterium X. complanata. It found that CK-PC1 produced phenazine-1-carboxylic acid (PCA, 1) as major metabolite. The biological effects PCA (1) were investigated using seeds complanata and Mung bean (Vigna radiata) it uncovered symbiosis CK-PC1was postgermination metabolite might partially contribute to promote plants.