相关实验视频

Updated: Jul 5, 2025

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections

Published on: April 17, 2015

综合批量分离剂分析,精细映射和转录组揭示了与野生西瓜干旱适应相关的QTL和候选基因

Ahmed Mahmoud^1,2,3,4, Rui Qi^1,2, Xiaolu Chi^1,2

¹Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China.

International journal of molecular sciences

|January 11, 2024

概括

研究人员在野生西瓜中确定了负责干旱适应的关键基因. 这一发现有助于开发具有提高用水效率和抵御干旱压力的作物.

科学领域:

植物遗传学植物遗传学
农作物科学农作物科学
分子生物学分子生物学

背景情况:

干旱压力显著影响全球作物产量.
坚固的根系对于干旱期间的水和营养获取至关重要.
野生西瓜表现出优越的干旱适应能力,但其遗传基础尚未被探索.

研究的目的:

调查控制西瓜根系干旱适应能力的遗传因素.
识别与干旱耐受性相关的定量特征位点 (QTLs) 和基因.

主要方法:

在野生和养西瓜的F2种群上进行批量分离分析 (BSA).
定量特征位点 (QTL) 验证和精细映射.
在干旱压力下对母根的转录组分析.

主要成果:

确定了两个QTL (qNLR_Dr. 在 Chr01 和 qNLR_Dr. Chr02) 与干旱的侧面根反应有关.
在qNLR_Dr.Dr.上精细绘制了一个0.93 Mb的区域. Chr01与干旱适应有关.
确定了六个候选基因 (AO,CSI1,LEA,ZHD2,PFA5,bZIP53类) 可能参与干旱适应.

结论:

发现了宝贵的QTL和候选基因,用于增强西瓜的干旱耐受性.
结果支持标记器辅助的选择,以提高农作物用水效率.
在西瓜和相关物种中提供干旱耐受性基因工程的基础.

关键词:

耐旱耐受性耐旱耐受性遗传资源是一种遗传资源.基因组学辅助的繁殖是基因组学辅助的繁殖定量特征位置 (QTL) 绘制地图.转录组 (transcriptome) 是一个转录组.野生西瓜水

更多相关视频

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs

Published on: November 20, 2018

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

相关概念视频

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.

Responses to Drought and Flooding

Responses to Drought and Flooding

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.

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.

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.