Morphological plasticity can enable algae to adapt to environmental change and increase their invasibility when introduced into new habitats. Nevertheless, there is still a lack of knowledge on how such plasticity can affect the invasion process of an invasive species. In this context, the high plasticity in the genus Caulerpa is well documented. However, after an extremely hot summer, a previously unreported filamentous morphology of Caulerpa cylindracea was detected; indeed, this morphology could only be confirmed taxonomically after in-depth morphological characterization and molecular analysis with the genetic marker tufA. We describe an ex situ culture experiment which showed that stressful conditions, such as high temperatures, can trigger this morphological change. Almost all of the thalli maintained at a constant extreme temperature of 29°C died, but after being returned to optimum temperature conditions, the filamentous morphology began to develop from the surviving microscopic tissue. In contrast, thalli at a control temperature of 21°C maintained the regular morphology throughout the experiment. When C. cylindracea develops this filamentous morphology, it may act as a cryptic invader because it is difficult to detect in the field. Furthermore, the filaments likely improve C. cylindracea’s invasive capabilities with regard to resistance, persistence and dispersion and may have an important role in the re-colonization process, after a population disappears following a period of stressful conditions. Possibly, C. cylindracea’s ability to respond plastically to stressful conditions might explain its remarkable success as an invasive species.

形态可塑性可以使藻类适应环境变化并在引入新的栖息地时增加其入侵能力。但是，仍然缺乏关于这种可塑性如何影响入侵物种入侵过程的知识。在这种情况下，属的高可塑性考拉帕有据可查。但是，在炎热的夏天之后，以前没有报道过的丝状形态花椰菜被检测到；的确，只有通过深入的形态学表征和遗传标记分子分析后才能从分类学上确认这种形态塔夫答：我们描述了 异地培养实验表明，压力条件（例如高温）可以触发这种形态变化。维持在29°C的恒定极端温度下的所有拟南芥都死亡，但是在恢复到最佳温度条件后，幸存的显微组织开始形成丝状形态。相反，在整个实验过程中，沙利在21°C的控制温度下仍保持规则的形态。什么时候茶树发展这种丝状形态，它可能是一个隐性入侵者，因为很难在现场检测到。此外，细丝可能会改善茶树在一段时间的压力条件下人口消失之后，在抵抗，持久和分散方面的侵略能力可能在重新殖民化过程中发挥重要作用。可能吧茶树它对压力条件产生塑性反应的能力可能解释了其作为入侵物种的卓越成就。