Cd induced changes in proline level and peroxidase activity in roots of rice seedlings

Abstract

The effects of Cd on changes in proline level and peroxidase activity in roots of rice seedlings were investigated. CdClz was effective in inhibiting root growth and in accumulating proline in roots. The inhibition of root growth by Cd is reversible. The reduction of root growth induced by Cd is closely associated with accumulation of proline in roots. External application of proline markedly inhibited root growth of rice seedlings in the absence of Cd. Ionically bound, but not soluble, peroxidase activity in roots was increased by CdClz. Proline treatment also resulted in an increase in ionically bound peroxidase activity in roots. The relationship between growth inhibition of roots induced by Cd and changes of proline level and peroxidase activity is discussed.

Two Cu(I\II) Coordination Polymers for Photocatalytic Degradation of Organic Dyes and Efficient Detection of Fe3+ Ions

“…As a result, the quenching constant K sv was estimated to be 1. 25 ´ 10 4 M −1 , which is comparable to those of other reported Fe 3+ quenching coe cients (Table S3) [16, [44][45][46][47][48]. In addition, we measured the uorescence behaviors of Cu-dpe(I) in both metal ions solutions of M n+ with and without Fe 3+ (M = K + , Na + , Pb 2+ , Cr 3+ , Cu 2+ , Sr 2+ , Ni 2+ , Zn 2+ , Co 2+ , and Cd 2+ ) to further understand the selectivity of Cu-dpe(I) towards Fe 3+ .…”

Decorating Porous Aromatic Framework Cavities with Long‐Chain Alkyl Grippers for Rapid and Selective Iron(III) Detection

“…The LOD values of LNU-22 and LNU-24 were calculated to be 2.86 × 10 À 5 M and 5.34 × 10 À 6 M, which was much lower than some previously reported luminescent materials such as MOFs, COPs, ZIFs and PNTs, etc. (Table 1) [4,6,7,39,43,[49][50][51][52][53][54][55][56][57][58][59] , indicating the outstanding capability of PAF sample for sensing Fe 3 + ions.…”

Identifying rice stress on a regional scale from multi-temporal satellite images using a Bayesian method

“…It is recognized that a multitude of stressors with different modes of action may trigger similar physiological responses. For example, stress may induce: (i) changes in canopy architecture and their internal structure, due both to a decrease of leaf area production and to a destroyed cellular structure; (ii) pigments contents decrease due to a limitation of the synthesis of chloroplasts; (iii) canopy temperature increase due to lower transpiration fluxes (Chen and Kao, 1995;Larsson et al, 1998;Phadikar et al, 2012;Yuan et al, 2017). As a result, the reflectance spectra of crops may exhibit a similar variation in the visible light and near-infrared bands in a certain time period when crops are exposed to heavy metals, pests, disease or nutrient stress (Yang et al, 2007;Liu et al, 2010;Mee et al, 2017).…”