Abstract：
There is a lack of studies on the ability of plants to metabolize chlorinated organic pollutants (COPs) and the dynamic expression changes of metabolic molecules during degradation. In this study, hybrid rice Chunyou 927 (CY) and Zhongzheyou 8 (ZZY), traditional rice subsp. Indica Baohan 1 (BH) and Xiangzaoxian 45 (XZX), and subsp. Japonica Yangjing 687 (YJ) and Longjing 31 (LJ) were stressed by a typical COPs of lindane and then transferred to a lindane-free culture to incubate for 9 days. The cumulative concentrations in the roots of BH, XZX, CY, ZZY, YJ and LJ were 71.46, 65.42, 82.06, 80.11, 47.59 and 56.10 mg·kg-1, respectively. And the degradation ratios on day 9 were 87.89 %, 86.92 %, 94.63 %, 95.49 %, 72.04 % and 82.79 %, respectively. On the 0 day after the release of lindane stress, the accumulated lindane inhibited the normal physiological activities of rice by affecting lipid metabolism in subsp. Indica BH, amino acid metabolism and synthesis and nucleotide metabolism in hybrid CY. Carbohydrate metabolism of subsp. Japonica YJ also was inhibited, but with low accumulation of lindane, YJ regulated amino acid metabolism to resist stress. With the degradation of lindane in rice, the amino acid metabolism of BH and CY, which had high degradation ratios on day 9, was activated to compound biomolecules required for the organism to recover from the damage. Amino acid metabolism and carbohydrate metabolism were disturbed and inhibited mainly in YJ with low degradation ratios. This study provides the difference of the metabolic capacity of the metabolic capacity of different rice varieties to lindane, and changes at the molecular level and metabolic response mechanism of rice during the metabolism of lindane.
摘要：
缺乏对植物代谢氯化有机污染物(COPs)的能力以及降解过程中代谢分子的动态表达变化的研究。在这项研究中,杂交水稻春优927(CY)和中浙优8(ZZY)，传统水稻亚种。粳稻宝汉1号(BH)和香枣县45号(XZX)，和subsp。日本羊井687（YJ）和龙井31（LJ）用典型的林丹COP胁迫，然后转移到无林丹的培养物中孵育9天。BH根中的累积浓度，XZX,CY,ZZY,YJ和LJ分别为71.46、65.42、82.06、80.11、47.59和56.10mg·kg-1。第9天的降解率为87.89%，86.92%,94.63%,95.49%,72.04%和82.79%，分别。在林丹压力释放后的第0天，林丹的积累通过影响亚种的脂质代谢来抑制水稻的正常生理活动。IndicaBH,杂种CY中的氨基酸代谢和合成以及核苷酸代谢。亚种的碳水化合物代谢。日本YJ也被抑制，但是林丹的积累很少，YJ调节氨基酸代谢以抵抗胁迫。随着林丹在大米中的降解，BH和CY的氨基酸代谢，在第9天具有高降解率，被激活为生物体从损伤中恢复所需的复合生物分子。氨基酸代谢和碳水化合物代谢主要在降解率低的YJ中受到干扰和抑制。本研究提供了不同水稻品种对林丹代谢能力的差异,以及林丹代谢过程中水稻分子水平的变化和代谢响应机制。
