Relatively Low Light Intensity Promotes Phosphorus Absorption and Enhances the Ethylene Signaling Component EIN3 in Maize, Wheat, and Oilseed Rape

Previous studies have found that once seedlings break the soil, light can induce degradation of key ethylene signaling element insensitive 3 (EIN3), so as to indirectly inhibit synthesis ethylene. Ethylene is most important hormone in phosphorus absorption by plants, which induces expression acid phosphatase (APase) and starvation response genes. Therefore, it might be speculated changes intensity could regulate some degree. However, there are few reports on mechanism regulates metabolism. In this study, effects different intensities assimilation metabolism plants were studied. The results showed relatively low promote secretion APase, increase concentration plant total cellular Pi. may also growth. Among three species, oilseed rape was sensitive intensity. steady-state level EIN3 protein decreased significantly under a high intensity; while appropriate reductions simultaneously maintain