第三维的叶子生长:从遗传调节到生态生理学的叶子厚度的视角
Prakshi Aneja1, Rajarshi Sanyal1, Aashish Ranjan1
1National Institute of Plant Genome Research, New Delhi, 110067, India.
The New phytologist
|November 8, 2024
概括
叶子厚度是植物发育的一个关键方面,影响光合作用和用水. 了解其遗传和分子调节对于作物改进和适应环境变化至关重要.
科学领域:
- 植物生物学 植物生物学
- 发展生物学 发展生物学
- 生理学 生理学 生理学
背景情况:
- 叶子的厚度是叶子生长的第三个维度,对于植物的健康至关重要,它影响光合作用和用水效率.
- 叶子厚度的细胞基础涉及细胞大小和层数,在像Angustifolia (an) 和Rotundifolia (rot) 这样的Arabidopsis突变体中进行了研究.
- 叶子厚度表现出塑性,以应对环境因素和内生信号,反映生态适应.
研究的目的:
- 审查调节叶子厚度的遗传和分子机制.
- 探索叶子厚度可塑性在环境适应中的生理意义.
- 从遗传学到生理学来了解叶子厚度,以改善作物.
主要方法:
- 审查关于叶子厚度突变和遗传调节的现有文献.
- 对参与叶子厚度控制的细胞和分子参与者的分析.
- 对叶子厚度的生理影响和环境影响的讨论.
主要成果:
- 叶子厚度是由细胞大小和数量调节的,基因突变提供了对其调节的见解.
- 环境线索与信号通路相互作用,影响叶子厚度和可塑性.
- 目前对叶子厚度调节的遗传和分子理解有限.
结论:
- 对叶子厚度的遗传,分子和生理知识的整合是必不可少的.
- 叶子厚度可塑性是植物面临各种环境和气候变化的关键适应性特征.
- 准叶子厚度为提高作物生产力和弹性提供了潜力.
相关概念视频
02:16Light Acquisition
8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K
03:02Primary and Secondary Growth in Roots and Shoots
56.0K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
56.0K
02:19Morphogenesis
26.8K
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.
26.8K
02:36Meristems and Plant Growth
44.7K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
44.7K
01:57Adaptations that Reduce Water Loss
25.1K
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.
25.1K