用英文翻译下面这段话：对PHR1为核心的磷饥饿响应网络相关基因的表达进行分析发现该通路多数基因受低磷诱导上调如SPX1、SPX2、SPX4、PHO1和PHT1家族等跟已报道的其它作物比较一致说明该通路的保守性。

Analysis of the expression of genes related to the PHR1-centered phosphate starvation response network revealed that most genes in this pathway were induced by low phosphate, such as SPX1, SPX2, SPX4, PHO1, and PHT1 families. This is consistent with other reported crops, indicating the conservation of this pathway.