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| 磷高效转基因水稻OsPT4对红壤无机磷组成的影响 |
| Effects of P-efficient Transgenic Rice OsPT4 on Inorganic Phosphorus Fractions in Red Soil |
| 投稿时间：2017-03-20 |
| DOI：10.13254/j.jare.2017.0077 |
| 中文关键词: 磷高效，转基因水稻，无机磷组分，根盒，红壤 |
| 英文关键词: high phosphorus utilization efficiency, transgenic rice, inorganic phosphorus fractions, rhizobox, red soil |
| 基金项目:国家自然科学基金（31301855） |
| 作者 | 单位 | E-mail | | 魏琳琳 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 倪土 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 臧怀敏 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 李刚 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 修伟明 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 杨殿林 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | | | 赵建宁 | 农业部环境保护科研监测所, 农业部产地环境质量重点实验室/天津市农业环境与农产品安全重点开放实验室, 天津 300191 | zhaojn2008@163.com |
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| 中文摘要: |
| 本研究以磷高效转基因水稻OsPT4为材料，以非转基因亲本日本晴（Nipp）和磷高效突变体水稻PHO2为对照，设施磷和不施磷2个处理，利用根盒试验研究磷高效转基因水稻OsPT4的种植对根际及非根际土壤无机磷组成的影响。结果表明：（1）OsPT4和PHO2的植株干重和磷含量均显著高于Nipp，而土壤全磷和无机磷总量均低于Nipp；（2）OsPT4和PHO2水稻根际和非根际土壤无机磷组分含量均表现为O-P > Fe-P > Al-P > Ca-P；（3）施磷处理时，OsPT4和PHO2的根际土壤O-P、Ca-P含量显著低于Nipp，其非根际土壤Al-P、Fe-P和O-P含量也显著低于Nipp。不施磷处理时，OsPT4和PHO2的根际土壤Fe-P含量和非根际土壤Fe-P、O-P含量均显著低于Nipp，其根际土壤Ca-P含量显著高于Nipp。说明在供磷条件下，磷高效转基因水稻对A1-P、O-P和Ca-P的吸收活化能力较强，而缺磷条件下，磷高效转基因水稻可促进其根系对Fe-P的吸收利用。 |
| 英文摘要: |
| In a rhizobox experiment with phosphorus(P) fertilizer application and P-deficiency, planting wild-type rice(Nipp), P-efficient mutant rice(PHO2), P-efficient transgenic rice(OsPT4) were chosen to evaluate effects of phosphorus efficient transgenic rice on inorganic phosphorus in the rhizosphere and non-rhizosphere soil. The obtained results were summarized as follows:(1)Significant higer dry weight and P accumulation were observed in OsPT4 and PHO2 than in Nipp, but lower total P and inorganic phosphorus observed in OsPT4 and PHO2 than in Nipp;(2)The concentrations of inorganic phosphorus fractions in the rhizosphere and non-rhizosphere soil were sorted as follows:O-P > Fe-P > Al-P > Ca-P, and the order of inorganic phosphorus fractions adapted to three rice materials;(3)When added phosphorus fertilizer, the concents of rhizospheric Al-P, Fe-P and non-rhizospheric Ca-P in three rice materials had no significant difference. The concents of rhizospheric soil O-P and Ca-P in OsPT4 and PHO2 were significantly inferior to Nipp, and their concents of non-rhizospheric soil Al-P, Fe-P and O-P were significantly lower than Nipp. When added no phosphorus fertilizer, the concents of rhizospheric Al-P, O-P, Ca-P and non-rhizosphere Al-P, Ca-P in three rice materials had no significant difference, and the concents of rhizosphere Fe-P and non-rhizosphere soil Fe-P, O-P in OsPT4 and PHO2 were significantly lower than Nipp, but rhizosphere Ca-P was significantly higher than Nipp. |
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