Mechanism by which GmPHR regulates the response of soybean rhizosphere microbial communities to low-phosphorus stress

Tomatoes have numerous varieties and high yields, making them one of the main vegetables in China. They are also characterized by rich nutrition and good marketability. Phosphorus, as a macronutrient essential for plant growth and development, plays an important role in these processes. A deficiency of phosphorus can result in stunted plants and poor development, severely affecting tomato yield and quality. In soil, phosphorus mainly exists in forms that plants cannot absorb and utilize, such as fixed and organic states, so the available phosphorus is very limited, far below the concentration required for plant growth, which restricts plant development and crop yield. To address this issue, people have begun to apply chemical fertilizers on a large scale. When fertilizers are applied to the soil, they easily react with Ca2+ and other ions to form precipitates. Therefore, the application of fertilizers is increased; however, excessive use of chemical fertilizers exceeds the soil's capacity, causing serious environmental pollution and leading to eutrophication of water bodies. Currently, China is at a critical stage of developing green agriculture, and reducing fertilizer use while increasing efficiency is a key strategy for sustainable agricultural development. Therefore, exploring the mechanism of efficient phosphorus absorption in tomatoes is particularly important.