Understanding the regulation and function of key transcription factors in the anther tapetum.

了解花药绒毡层中关键转录因子的调节和功能。

• 批准号: 2275873
• 金额: --
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2275873
• 关键词: Understanding; regulation; function; key; transcription

Successful flower development and pollination is critical for yield of most crops and thus food production. However, this process is particularly vulnerable to abiotic stress, particularly high temperature, frequently resulting in reduced fertility. Producing plants capable of tolerating environmental stress, especially during pollen development is crucial to sustaining future global crop yields. The tapetum is a cell layer in the anther that is essential for viable pollen development and thus fertility. It is a metabolically highly active cell layer, that is the major source of pollen cell wall materials during pollen development and then goes through Programmed Cell Death to release wall materials onto the immature pollen grains. Significant work has occurred using the Arabidopsis model to understand gene regulation in the tapetum and shown it to be a dynamic, but highly regulated network of feed-forward and feed-backward regulatory pathways. This research is aimed at understanding the molecular pathways of tapetum gene expression that impact on pollen formation. Particular emphasis will be towards chromatin modification during pollen development, since this has been implicated as key in adaptive memory of sub lethal heat stress leading to plant tolerance of stress.

成功的花朵发育和授粉对于大多数农作物的产量至关重要，因此至关重要。但是，这个过程尤其容易受到非生物压力，尤其是高温，通常导致生育能力降低。产生能够耐受环境压力的植物，尤其是在花粉发育过程中，对于维持未来的全球作物产量至关重要。 Tapetum是花药中的一个细胞层，对于可行的花粉发育和因此生育至关重要。它是一种代谢高度活跃的细胞层，它是花粉发育过程中花粉细胞壁材料的主要来源，然后经过编程的细胞死亡，将壁材料释放到未成熟的花粉颗粒上。使用拟南芥模型来了解tapeTum中的基因调节，并证明它是一个动态但高度调节的馈送和回馈调节途径网络。这项研究旨在理解影响花粉形成的tapetum基因表达的分子途径。在花粉发育过程中，特别重点将是染色质修饰，因为这已被视为对下致命的热应激的适应性记忆的关键，从而导致植物的胁迫耐受性。