Seaweed extracts are widely used as biostimulants in terrestrial crops but remain underexplored for economic macroalgae. This study investigated the effects of Ascophyllum marine plant extract powder (AMPEP) and Saccharina japonica extract powder (SJEP) on the growth and stress resistance of Pyropia yezoensis, a commercially significant red macroalga along the Northeast Asia coast. Through gradient analysis, optimal concentrat...

Red macroalga Pyropia yezoensis is a high valuable cultivated marine crop. Its acclimation to cold stress is especially important for long cultivation period across winter in coasts of warm temperate zone in East Asia. In this study, the response of P. yezoensis thalli to low temperature was analyzed on physiology and transcriptome level, to explore its acclimation mechanism to cold stress. The results showed that the practica...