Relationships between Pb in corn grain and soil properties.

<p>Relationships between Pb in corn grain and soil properties.</p

The pathway analysis of photosynthesis (A and C) and photosynthesis-antenna proteins (B and D) of Zn-sensitive rice (<i>Oryza sativa</i> L.) cultivar grown hydroponically with either normal (0.15 µM) or high (2 mM) Zn without or with 1.5 mM Si for 72 h through high-throughput sequencing.

<p>The pathway analysis of photosynthesis (A and C) and photosynthesis-antenna proteins (B and D) of Zn-sensitive rice (<i>Oryza sativa</i> L.) cultivar grown hydroponically with either normal (0.15 µM) or high (2 mM) Zn without or with 1.5 mM Si for 72 h through high-throughput sequencing.</p

Experimental design and measured index.

<p>Experimental design and measured index.</p

Effects of different soil types on the bioconcentration factor under stress of exogenous Pb.

<p>Effects of different soil types on the bioconcentration factor under stress of exogenous Pb.</p

Genes expression of Zn-sensitive rice (<i>Oryza sativa</i> L.) cultivar grown hydroponically with either normal (0.15 µM) or high (2 mM) Zn without or with 1.5 mM Si for 72 h.

<p>Data are means ± S.D. of three replicates. Note:P-values indicate significance level based on two-way ANOVA. ^*P<0.05, ^**P<0.01. Data followed by different letters are significantly different according to ANOVA (P <0.05).</p

The conserved region of gene sequence and predicted product size for PCR used for detecting gene expression in the leaves of rice.

<p>The conserved region of gene sequence and predicted product size for PCR used for detecting gene expression in the leaves of rice.</p

Soil Environmental Quality Standards of China (GB15618-1995) and the added contents of exogenous Pb (mg.kg⁻¹).

<p>Soil Environmental Quality Standards of China (GB15618-1995) and the added contents of exogenous Pb (mg.kg⁻¹).</p

Intrinsic sensitivity (<i>k</i>) for non-model species fitted by models from Zhengdan 958.

<p>Intrinsic sensitivity (<i>k</i>) for non-model species fitted by models from Zhengdan 958.</p

Selected soil properties of the 17 soils used in the lead bioconcentration factor test.

<p>Soil sample locations are listed in the order of increasing pH.</p

Prediction models for the different Pb levels.

<p>Prediction models for the different Pb levels.</p