Determination of acetolactate synthase activity and protein content of oilseed rape (Brassica napus L.) leaves using visible/near-infrared spectroscopy

Liu, Fei; Zhang, Fan; Jin, Ziqi; He, Yong; Fang, Hui; Ye, Qingfu; Zhou, Weijun

doi:10.1016/j.aca.2008.09.027

Cited by 70 publications

(45 citation statements)

References 39 publications

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“…It can be used as calibration method for its supervised learning ability providing good results (Liu et al, 2008). Back propagation is the generalization of the Widrow-Hoff learning rule to multiple-layer networks and nonlinear differentiable transfer functions (MatLab Neural Network Toolbox™ 6 User's Guide).…”

Section: Establishment Of Calibration Modelsmentioning

confidence: 99%

Comparison among principal component, partial least squares and back propagation neural network analyses for accuracy of measurement of selected soil properties with visible and near infrared spectroscopy

et al. 2010

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Section: Establishment Of Calibration Modelsmentioning

confidence: 99%

Comparison among principal component, partial least squares and back propagation neural network analyses for accuracy of measurement of selected soil properties with visible and near infrared spectroscopy

et al. 2010

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“…In the application aspects of oilseed rape, NIR was utilized for the determination of chlorophyll of rape leaves (Fang et al 2007), nitrogen content of rape leaf and canopy (Wang et al 2008), leaf area index (Huang et al 2006), ALS, protein content, and amino acids in oilseed rape leaves (Liu et al 2008a;Liu et al 2009a;Liu et al 2009b). However, there were few reports on the determination of total amino acids (TAA) in oilseed rape leaves treated by the new ALSinhibiting herbicide ZJ0273 using NIR.…”

Section: Introductionmentioning

confidence: 99%

Applying Near-Infrared Spectroscopy and Chemometrics to Determine Total Amino Acids in Herbicide-Stressed Oilseed Rape Leaves

Liu

Jin

Naeem

et al. 2010

Food Bioprocess Technol

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Near-infrared (NIR) spectroscopy was investigated to determine the total amino acids (TAA) in oilseed rape (Brassica napus L.) leaves under a new herbicidepropyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoate (ZJ0273)-stress. In full-spectrum partial least squares (PLS) models, direct orthogonal signal correction (DOSC) was the best preprocessing method. Successive projections algorithm (SPA) was used to select the relevant variables. Multiple linear regression (MLR), PLS, and least squares-support vector machine (LS-SVM) were used for calibration. The DOSC-SPA-LS-SVM model achieved the best prediction performance with correlation coefficients r=0.9968 and root mean squares error of prediction (RMSEP) =0.2950 comparing all SPA-MLR, SPA-PLS, and SPA-LS-SVM models. Some parsimonious direct functions were also developed based on the DOSC-SPA wavelength (1,340 nm) such as linear, index, logarithmic, binominal, and exponential functions. The best performance was achieved by direct exponential function with r=0.9968 and RMSEP=0.2943. The overall results indicated that NIR was able to determine the TAA in herbicide-stressed oilseed rape leaves, and the DOSC-SPA was quite helpful for the development of detection sensors and the monitoring of the growing status and herbicide effect on field crop oilseed rape.

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“…Another possible reason is that one of ZJ0273 metabolites was identified as 2-(4,6-dimethoxypyrimidin-2-yloxy) benzoic acid (M3) through LC-MS/MS, which also can inhibit the cell growth and degrading enzyme activity. Several reports showed that M3 can decrease biological activity through inhibiting the biosynthesis of branched-chain amino acids and it is also one of the acetolactate synthase inhibitors (Cai et al 2012a;Heim et al 1990;Liu et al 2008;Sabba et al 1999). ZJ0273 is a novel herbicide with low toxicity.…”

Section: Zj0273 Degradation Process By M3-1 and Mn6mentioning

confidence: 98%

A fusant of Amycolatopsis sp. M3-1 and Pseudomonas sp. Nai8 with high capacity of degrading novel pyrimidynyloxybenzoic herbicide ZJ0273 and naphthalene

Chen

Cai

2015

Environ Sci Pollut Res

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ZJ0273 (propyl 4-(2-(4, 6-demethoxy pyrimidin-2-yloxy) benzylamino) benzoate) is a novel pyrimidynyloxybenzoic-based herbicide developed in China for oilseed crop. This study was aimed to construct new strains capable of degrading naphthalene and ZJ0273 by protoplast fusion between Amycolatopsis sp. M3-1 and Pseudomonas sp. Nai8. Eight recombinant strains were successfully produced, and the strains could simultaneously utilize ZJ0273 and naphthalene as the sole carbon and energy source, respectively. One of recombinant strains, MN6 with higher degrading efficiency, was chosen for further study. Under the condition of pH 7.0, 30 °C, ZJ0273 and naphthalene degradation percent by the recombinant strain MN6 could reach 65.10% (20 days) and 88.46% (48 h), respectively. According to the identified six metabolites (M1-M6) by LC-MS/MS, biodegradation pathway of ZJ0273 was proposed. ZJ0273 biodegradation catalyzed by the recombinant strain MN6 involved continuous biocatalytic reactions such as de-estering, hydrolysis, acylation, C-N cleavage, de-methyl, and ether cleavage reactions.

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Determination of acetolactate synthase activity and protein content of oilseed rape (Brassica napus L.) leaves using visible/near-infrared spectroscopy

Cited by 70 publications

References 39 publications

Comparison among principal component, partial least squares and back propagation neural network analyses for accuracy of measurement of selected soil properties with visible and near infrared spectroscopy

Comparison among principal component, partial least squares and back propagation neural network analyses for accuracy of measurement of selected soil properties with visible and near infrared spectroscopy

Applying Near-Infrared Spectroscopy and Chemometrics to Determine Total Amino Acids in Herbicide-Stressed Oilseed Rape Leaves

A fusant of Amycolatopsis sp. M3-1 and Pseudomonas sp. Nai8 with high capacity of degrading novel pyrimidynyloxybenzoic herbicide ZJ0273 and naphthalene

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