Saccharina japonica is an important large brown alga and a major component of productive beds on the northwest coast of the Pacific Ocean. Abiotic stress response mechanisms are receiving considerable attention because global climate change is increasing their abiotic stress levels. However, our knowledge of how S. japonica broadly responds to stress is limited. In this study, we investigated the S. japonica responsive genes underlying acclimation to diverse stressors of acidification, high light, high temperature, hypersalinity, and hyposalinity and identified 408 core genes constantly and differentially expressed in response to all stressors. Our results confirm that stressors had strong effects on genes participating in photosynthesis, amino acid metabolism, carbohydrate metabolism, halogen metabolism, and reactive oxygen species defense. These findings will improve our understanding of brown algal response mechanisms linked to environmental stress and provide a list of candidate genes for improving algal stress tolerance in light of environmental stress in future studies.

中文翻译：

---

通过全基因组研究在褐藻（日本海藻，紫藻科）中探索对多种环境胁迫的核心响应机制。

粳糖是一种重要的大型褐藻，是太平洋西北海岸的生产层的主要组成部分。由于全球气候变化正在加剧其非生物胁迫水平，因此非生物胁迫响应机制受到了广泛关注。但是，我们对日本血吸虫如何广泛应对压力的知识是有限的。在这项研究中，我们调查了日本粳稻适应各种酸化，高光，高温，高盐度和低盐度压力源的响应基因，并确定了408个核心基因，这些基因在针对所有压力源的反应中持续且差异表达。我们的结果证实，应激源对参与光合作用，氨基酸代谢，碳水化合物代谢，卤素代谢和活性氧防御的基因有很强的影响。这些发现将增进我们对与环境压力相关的褐藻反应机制的理解，并在未来的研究中提供根据环境压力改善藻类耐性的候选基因清单。