Maize Genomics and Genetics 2025, Vol.16, No.4, 219-228 http://cropscipublisher.com/index.php/mgg 221 Figure 1 a Phenotypes of B73 and Mo17 on the 21st day after normal P and P deficiency stress treatments. B Expression profiles of ZmSPX genes reveal their different responses to deficient P (Adapted from Xiao et al., 2021) Image caption: Heat map analysis of the expression patterns of 33 ZmSPX genes in B73 and Mo17 samples collected at different times, from different tissues and under different P treatment conditions. Four subfamilies are represented by different colours. Leaf samples and root samples are highlighted in green and brown, respectively. The data were normalized to log2 values, and the colour scale represents the relative expression level (Adapted from Xiao et al., 2021) 3.2 Intracellular phosphate distribution and storage Phosphorus is not just absorbed and that's it. How it is used and distributed is also very crucial. For instance, the ZmPT7 is also responsible for transporting phosphorus from old leaves to new ones, especially when there is a phosphorus deficiency, this function becomes even more crucial. And for the storage part, vacuoles play a significant role. The ZmVPE transporter on the vacuole membrane can release the phosphorus stored inside again for the newly grown parts. Experiments have proved that once ZmVPE is overexpressed, the redistribution ability
RkJQdWJsaXNoZXIy MjQ4ODYzNA==