高温胁迫下花粉和花粉管微丝骨架调控机制揭示

Core Insights - The research team at Lanzhou University has made significant progress in understanding the mechanisms by which plants respond to high-temperature stress, particularly focusing on the role of a novel protein, PGSL1, in pollen and pollen tube microfilament regulation [1][2] - The findings highlight the potential of PGSL1 in enhancing crop tolerance to high temperatures, which is crucial for agricultural productivity under climate change conditions [1][2] Group 1: Research Findings - The study identified PGSL1 as a heat-stable microfilament-binding protein that plays a critical role in maintaining pollen viability and normal growth of pollen tubes under high-temperature conditions [2] - PGSL1 stabilizes the dynamic microfilament structure of pollen tubes at elevated temperatures and regulates the distribution and transport of vesicles at the pollen tube tip [2] Group 2: Methodology and Implications - The research utilized a forward genetic screening approach, employing a compound called red sea sponge B, which effectively inhibits actin polymerization, to identify new or unique actin-binding proteins in plants [1][2] - This study not only reveals the regulatory mechanisms of pollen tube microfilament under high-temperature stress but also provides new methods and perspectives for identifying and discovering new microfilament-binding proteins in plants [2]