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. 2002 Feb;128(2):625–633. doi: 10.1104/pp.010686

Table II.

Results of fitting Se K near-edge x-ray absorption spectra of Indian mustard and muskgrass

Treatment SeCN− SeOInline graphic SeOInline graphic SeMet Selenocystine R × 10
Indian mustard
 SeCN− Shoots 0 0 0.07  (2) 0.75  (6) 0.18  (5) 0.315
Roots 0 0 0.09  (2) 0.32  (6) 0.59  (5) 0.329
Muskgrass
 SeOInline graphic 0 0.40  (1) 0.13  (2) 0.23  (7) 0.24  (6) 0.441
 SeOInline graphic 0 0 0.34  (1) 0.39  (5) 0.27  (4) 0.199
 SeCN− 0 0 0.45  (2) 0.31  (6) 0.24  (6) 0.351

The fractional contribution of standard spectra to the spectrum of the unknown is shown. The values in parentheses are three times the estimated sd of the last figure(s). R is the least-squares residual, Σ(Iobs − Icalc)/N, where Iobs and Icalc are the observed and calculated data, and N is the number of data points. Elemental Se was also included in the fits, but did not contribute. The selenocystine standard is a stable dimer of selenocysteine.