The red alga Pyropia yezoensis is an economically important marine crop whose life cycle includes two distinct stages: conchocelis and blades. These two types of thalli live in significantly different environments and have distinct shapes and physiological features. The photosynthetic apparatus of red algae, especially the light harvesting antenna, is unique. However, little is known about the photosynthetic apparatus of P. yezoensis. We studied the composition and organization of thylakoid membranes in conchocelis and blades of P. yezoensis and found that the photosynthetic complexes differed between the two stages. Conchocelis had much higher photosystem I (PSI)/ photosystem II and PSI/Cytochrome b6/f ratios compared with blades. Additionally, a macromolecular protein complex that bound with lutein and Chlorophyll a was detected in conchocelis but not in blades. The number and types of light harvesting complex subunits associated with PSI and the corresponding pigment binding also varied between conchocelis and blades. These differences are an important strategy that allows the two P. yezoensis stages to adapt to various environments.

红藻斑节对虾是一种经济上重要的海洋作物，其生命周期包括两个不同的阶段：贝壳状和叶片。这两种类型的塔利生活在明显不同的环境中，并具有不同的形状和生理特征。红藻的光合装置，特别是光收集天线，是独特的。然而，关于野牛假单胞菌的光合装置知之甚少。我们研究了夜蛾假体的耳蜗和叶片中类囊体膜的组成和组织，发现这两个阶段的光合复合物有所不同。Conchocelis的光系统I（PSI）/光系统II和PSI /细胞色素b6 / f更高与叶片的比率。另外，与叶黄素和叶绿素a结合的大分子蛋白质复合物在贝壳菌中被检出，但在叶片中未检出。与PSI和相应的色素结合相关的光收集复杂亚基的数量和类型在贝壳状和叶片之间也不同。这些差异是一项重要的策略，可让两个假单胞菌阶段适应各种环境。