相关实验视频

Updated: Jun 24, 2025

In Vivo Monitoring of Transcriptional Activity During Metabolic Transition Using a Bioluminescent Reporter in Yeast

In Vivo Monitoring of Transcriptional Activity During Metabolic Transition Using a Bioluminescent Reporter in Yeast

Published on: February 21, 2025

利用寒冷适应进行后冰期殖民:在多体和其原始体中利用 Galactinol 合成酶表达和拉芬积累

Lavinia Ioana Fechete¹, Anna C Larking², Angus Heslop³

¹Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.

Plant, cell & environment

|June 14, 2024

概括

白色的三叶草是白色的三叶草.

科学领域:

植物遗传学植物遗传学
进化生物学是进化的生物学.
分子生物学分子生物学

背景情况:

阿洛特拉普洛伊德白三叶草 (Trifolium repens) 起源于沿海和高山祖先的杂交.
它的后冰期利基扩张表明它适应了新的环境.
了解这种适应的分子基础至关重要.

研究的目的:

为了研究驱动白三叶草冰期后口扩张的分子事件.
为了确定基因和代谢途径赋予寒冷耐受性在衍生品系.
为了比较祖先和新型白叶三叶草之间的反应.

主要方法:

在白色三叶草生态型,原始物种和重新合成的新型多体中对反应的转录组分析.
在阿尔卑斯山原始物及其子基因组中识别专门由引起的基因.
在冷应力下对银河和拉芬积累的量化.

主要成果:

作为一个关键基因,Galactinol合成酶被确定为raffinose冷保护剂生物合成的关键.
阿尔卑斯山原产的白色三叶草血统和新聚合物在寒冷压力下显示出快速的拉芬积累.
阿尔卑斯山的祖先对银醇合成酶表达和拉芬积累的贡献是显著的.

结论:

阿尔卑斯山的祖先的冰诱导的 galaktinol 合成酶表达可能促进了白三叶草的冰川后殖民.
拉芬的积累提供了冷保护的优势,使其能够扩展到更冷的环境中.
杂交和随后的基因表达变化是白三叶草适应辐射的关键.

关键词:

白的三叶草 (T. pallescens) 是一种白的三叶草.白三叶草 (T. repens) 是一种白三叶草.西方三叶草 (Trifolium occidentale) (西方三叶草) 是一种植物.耐寒性耐寒性耐寒性耐寒性一个新型的多重复合体.拉菲诺斯 (raffinose) 是一种属于寡糖家族的糖类.一个亚基因组的子基因组.

更多相关视频

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Published on: August 12, 2019

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

Published on: April 17, 2016

相关概念视频

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

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.

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

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.

Formation of Species

Formation of Species

Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.