辅酶外流载体PIN1a调节谷物根中的血管模式
Riccardo Fusi1,2, Sara Giulia Milner3, Serena Rosignoli3
1School of Biosciences, University of Nottingham, Sutton Bonington Campus, Nottingham, LE12 5RD, UK.
The New phytologist
|April 26, 2024
概括
麦根的发育是由HVPIN1a控制的,HVPIN1a是一种对血管模式至关重要的基因. Hvpin1a突变显示了根生长和解剖学的改变,影响了土壤资源捕获.
科学领域:
- 植物遗传学 植物遗传学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 大麦 (Hordeum vulgare) 是一个关键的谷物作物和遗传模型.
- 了解根结构对于捕获土壤资源至关重要.
- 控制大麦根发育的基因缺乏特征.
研究的目的:
- 识别调节大麦根结构和解剖学的基因.
- 描述HVPIN1a在根部发育中的功能.
- 研究谷物中PIN1基因功能的演变.
主要方法:
- 一个TILLING突变种群的表型选.
- 基于SNP阵列的批量分离分析和外体序列测序.
- 对大麦和Brachypodium的根生长,解剖学和基因表达的分析.
主要成果:
- 一个大麦突变 (TM5992) 与一个短根表型被确定.
- 突变被映射到HVPIN1a,由独立的等位基因证实.
- Hvpin1a突变体表现出增长速度降低,较小的尖端髓系统和血管缺陷.
- 骨基PIN1a和PIN1b表现出冗余的表达,而Bdpin1a突变体表现出类似的血管缺陷.
结论:
- HvPIN1a在大麦根血管模式中发挥着重要作用.
- 与Arabidopsis相比,大麦PIN1基因具有次级功能.
- HvPIN1a对于正常的根部发育和谷物中潜在的土壤资源获取至关重要.
相关概念视频
01:25Cell Signaling in Plants
5.6K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.6K
01:46The Apoplast and Symplast
50.4K
Plant growth depends on its ability to take up water and dissolved minerals from the soil. The root system of every plant is equipped with the necessary tissues to facilitate the entry of water and solutes. The plant tissues involved in the transport of water and minerals have two major compartments - the apoplast and the symplast. The apoplast includes everything outside the plasma membrane of living cells and consists of cell walls, extracellular spaces, xylem, phloem, and tracheids. The...
50.4K
02:34Water and Mineral Acquisition
33.0K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
33.0K
02:19Morphogenesis
28.1K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
28.1K
02:12Short-distance Transport of Resources
16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
01:56Plant Hormones
23.9K
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
23.9K