树冠形成的大藻可以适应海洋热浪
Erika Fabbrizzi1, Marco Munari2, Simonetta Fraschetti3
1Department of Biology, University of Naples Federico II, Naples, Italy; Department of Integrative Marine Ecology, Ischia Marine Centre, Stazione Zoologica Anton Dohrn, Ischia (Naples), Italy; CoNISMa, Rome, Italy.
Environmental research
|October 1, 2023
概括
海洋热浪 (MHWs) 影响沿海息地. 这项研究表明,Gongolaria barbata可以通过生理变化适应热应激,这表明海洋物种的适应潜力比以前想象的要大.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化 生态学 生态学
- 保护科学 保护科学
背景情况:
- 海水变暖和海洋热浪 (MHWs) 导致沿海息地丧失.
- 评估海洋物种对海洋变暖的抵抗力对于保护和预测未来变化至关重要.
- 冈古拉里亚巴巴塔 (Gongolaria barbata) 是地中海的一个关键的树冠形成物种.
研究的目的:
- 为了研究短期和长期MHW在不同时间对刚果巴巴塔的新兵的生理影响.
- 为了确定G. barbata对热应激的适应能力和耐受性.
- 在气候变化下为海洋沿海息地提供保护和恢复战略的信息.
主要方法:
- 对从地中海海洋保护区收集的G. barbata新兵进行了受控的耐热实验.
- 测量的主要生理变量包括新兵的长度,光系统II (Fv/Fm) 的最大光化学效率,光合成色素,抗氧化化合物和总抗氧化活性 (DPPH).
- 使用单变异不对称分析来评估热应激持续时间和时间对生理反应的影响.
主要成果:
- 所有测量的生理变量,除了新兵的长度,都受到热应激的持续时间和时间的显著影响.
- 暴露在长期压力的新兵表现出更高的Fv/Fm比率,更高的叶绿素和胡卜素含量,以及更高的抗氧化剂度,表明生理适应.
- 观察到的适应机制并没有对G. barbata新兵的自然生长率产生负面影响.
结论:
- 格罗拉利亚巴巴塔表现出对热应激的生理适应,这表明它具有更高的适应未来气候条件的能力,包括MHWs.
- 这些发现支持了这样一个假设:海洋物种适应热应激比预期的更常见.
- 这项研究为开发针对脆弱的海洋沿海息地制定有针对性的保护和恢复战略提供了关键证据.
相关概念视频
Adaptations that Reduce Water Loss
25.7K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.7K
Responses to Heat and Cold Stress
13.6K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.6K
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
Other Algae
41
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
41
Red Algae
52
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
52
Green Algae
40
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
40


