在浮游生物宿主体内的共生微藻的转运体重塑
Caroline Juéry1, Adria Auladell2, Zoltan Füssy3,4
1Cell and Plant Physiology Laboratory, Unité Mixte de Recherche (UMR) 5168 Centre de l'Energie Atomique (CEA)-Centre national de la recherche scientifique (CNRS)-University Grenoble Alpes- INRAE, 38000, Grenoble, France.
The ISME journal
|December 10, 2024
概括
海洋微藻在共生中显著改变了它们的糖载体基因表达,揭示了碳转移的关键分子机制. 这影响了新陈代谢交换和光合作生的演变.
科学领域:
- 海洋微生物生态学
- 共生相互作用的共生相互作用.
- 光合作用和碳循环过程
背景情况:
- 代谢交换对于生物体的共生和进化至关重要.
- 海洋光合作用涉及从微藻到宿主转移碳,但机制尚不清楚.
- 单细胞光合作生常见于开的海洋,但它们的分子基础仍然在很大程度上是未知的.
研究的目的:
- 为了研究海洋微藻Phaeocystis与acantharia共生中的糖载体.
- 确定驱动单细胞海洋光合作生的碳水化合物交换的分子机制.
- 了解共生对藻类糖载体基因表达的影响.
主要方法:
- 基因组学来描述藻类糖运输体的特征.
- 单个全生物体的转录组学,以分析共生单位内的基因表达.
- 环境元转录组学以评估社区层面的载体表达.
主要成果:
- 同生性囊虫的糖运输组在基因组上与自由生活的亲属相似.
- 在共生微藻中观察到糖载体基因表达的显著重塑 (36%的差异表达).
- 检测到葡萄糖,三酸糖和甘油的特定载体 (GLUT,TPT,水素素) 的升级;也观察到时间表达模式.
结论:
- 同生关系深远影响糖载体基因表达和细胞糖流在Phaeocystis.
- 重编程的转运体突出显示了浮游生物的光合作用所必需的动态代谢连接.
- 这项研究提供了关于海洋共生中代谢交换的分子参与者的见解.
相关概念视频
Green Algae
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...
Red Algae
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...
Diversity of Protists IV
1
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
1
The Anatomy of Chloroplasts
5.0K
Green algae and plants, including green stems and unripe fruit, harbor specialized organelles called chloroplasts to carry out photosynthesis. They coordinate both stages of photosynthesis — the light-dependent reactions and the light-independent reactions. The light-dependent reactions use sunlight to release oxygen and produce chemical energy in the form of ATP and NADPH, and the light-independent reactions capture CO2 and use ATP and NADPH to produce sugar.
Structure of...
Structure of...
5.0K
Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Overview of Algae
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...


