Abstract: The TaNAC2 gene can promote uptake and utilization of nitrogen in a plant. A method for improving the uptake, transport and/or assimilation of nitrogen element in the plant includes: introducing a gene encoding a protein represented by SEQ ID NO:4 into a primary plant to obtain a transgenic plant. Compared to the primary plant, the uptake, transport and/or assimilation of the nitrogen element in the transgenic plant are improved. The method provides advantages in that: the TaNAC2 gene, as a nitrate nitrogen responsive regulatory factor, which can regulate the expression of a series of genes in nitrogen element uptake pathways of wheat, greatly promotes the study of the metabolism and utilization of the nitrogen element in a plant; and it is possible to improve the assimilation efficiency of nitrogen element by increasing the expression of TaNAC2, thereby reducing fertilizer application and increasing yield.

Abstract: The invention discloses novel sulfur-containing naphthalimide derivatives, and the preparation and uses thereof. The conjugated plane of naphthalimide derivatives of the invention is enlarged by incorporating 5-or 6-membered heteroaromatic ring and/or introducing S heteroatom, thus increasing the anti-tumor activity of naphthalimide. The compounds of the invention displays significant inhibiting activities to the proliferation of various tumor cells such as human lung cancer, gastric cancer, liver cancer, leucocythemia and the like. The inhibition of cell proliferation is dose-dependent.

Abstract: The invention discloses novel sulfur-containing naphthalimide derivatives, and the preparation and uses thereof. The conjugated plane of naphthalimide derivatives of the invention is enlarged by incorporating 5- or 6-membered heteroaromatic ring and/or introducing S heteroatom, thus increasing the anti-tumor activity of naphthalimide. The compounds of the invention displays significant inhibiting activities to the proliferation of various tumor cells such as human lung cancer, gastric cancer, liver cancer, leucocythemia and the like. The inhibition of cell proliferation is dose-dependent.

Abstract: The invention discloses novel sulfur-containing naphthalimide derivatives, and the preparation and uses thereof. The conjugated plane of naphthalimide derivatives of the invention is enlarged by incorporating 5-or 6-membered heteroaromatic ring and/or introducing S heteroatom, thus increasing the anti-tumor activity of naphthalimide. The compounds of the invention displays significant inhibiting activities to the proliferation of various tumor cells such as human lung cancer, gastric cancer, liver cancer, leucocythemia and the like. The inhibition of cell proliferation is dose-dependent.