Abstract
Zech et al. (2014) reported oxygen isotope ratios of stem hemicellulose for three species of plants grown at different temperatures and humidity. The authors did not consider temperature effects on biochemical fractionation during hemicellulose synthesis as an important determinant of the oxygen isotope ratio of hemicellulose. However, a closer examination of their data shows that, indeed, temperature has a significant effect on the oxygen isotope biochemical fractionation. Lower temperature has no effect on the proportion of oxygen isotope exchange with cell water, but it increases the biochemical fractionation of the exchange reaction. These results are consistent with previous observations.
| Original language | English |
|---|---|
| Pages (from-to) | 677-679 |
| Number of pages | 3 |
| Journal | Geochimica et Cosmochimica Acta |
| Volume | 141 |
| DOIs | |
| State | Published - Sep 15 2014 |
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ASJC Scopus subject areas
- Geochemistry and Petrology
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Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comment on "Oxygen isotope ratios (18O/16O) of hemicellulose-derived sugar biomarkers in plants, soils and sediments as paleoclimate proxy I
T2 - Insight from a climate chamber experiment" by Zech et al. (2014)
AU - Sternberg, Leonel
PY - 2014/9/15
Y1 - 2014/9/15
N2 - Zech et al. (2014) reported oxygen isotope ratios of stem hemicellulose for three species of plants grown at different temperatures and humidity. The authors did not consider temperature effects on biochemical fractionation during hemicellulose synthesis as an important determinant of the oxygen isotope ratio of hemicellulose. However, a closer examination of their data shows that, indeed, temperature has a significant effect on the oxygen isotope biochemical fractionation. Lower temperature has no effect on the proportion of oxygen isotope exchange with cell water, but it increases the biochemical fractionation of the exchange reaction. These results are consistent with previous observations.
AB - Zech et al. (2014) reported oxygen isotope ratios of stem hemicellulose for three species of plants grown at different temperatures and humidity. The authors did not consider temperature effects on biochemical fractionation during hemicellulose synthesis as an important determinant of the oxygen isotope ratio of hemicellulose. However, a closer examination of their data shows that, indeed, temperature has a significant effect on the oxygen isotope biochemical fractionation. Lower temperature has no effect on the proportion of oxygen isotope exchange with cell water, but it increases the biochemical fractionation of the exchange reaction. These results are consistent with previous observations.
UR - http://www.scopus.com/inward/record.url?scp=84919917548&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919917548&partnerID=8YFLogxK
U2 - 10.1016/j.gca.2014.04.051
DO - 10.1016/j.gca.2014.04.051
M3 - Article
AN - SCOPUS:84919917548
VL - 141
SP - 677
EP - 679
JO - Geochmica et Cosmochimica Acta
JF - Geochmica et Cosmochimica Acta
SN - 0016-7037
ER -