TY - JOUR
T1 - Thermal acclimation of leaf respiration varies between legume and non-legume herbaceous
AU - Peng, Fei
AU - Jung, Chang Gyo
AU - Jiang, Lifen
AU - Xue, Xian
AU - Luo, Yiqi
N1 - Funding Information:
Authors thank Dr Hui Dafeng’s suggestion to start such a study and also appreciate the discussion with Dr Shi Zheng, Jiang Jiang, and Ma Shuang before the field study. F.P.’s stay in The University of Oklahoma was supported by the Chinese Scholarship Council. F.P., C.G.J. and Y.Q.L. designed the research; F.P. and C.G.J. performed the research and analyzed the data; F.P., C.G.J., L.F.J., X.X. and Y.Q.L. interpreted the data. F.P. wrote the manuscript.
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Aims Ubiquitous thermal acclimation of leaf respiration could mitigate the respiration increase. However, whether species of different plant functional groups showing distinct or similar acclimation justifies the simple prediction of respiratory carbon (C) loss to a warming climate. Methods In this study, leaf dark respiration (Rd) of illinois bundleflower (IB, legume), stiff goldenrod (GR, C3 forbs), indian grass, little bluestem and king ranch bluestem (IG, LB and KB, C4 grass) were measured with detached leaves sampled in a 17-year warming experiment. Important Findings The results showed that Rd at 20°C and 22°C (R20 and R22) were significantly lower in the warming treatment for all the five species. Lower R22 in warmed than R20 in control in GR, KB, LB and IG imply acclimation homeostasis, but not in IB. The significant decline in temperature sensitivity of respiration (Q10) of GR resulted in the marginal reduction of Q10 across species. No significant changes in Q10 of C4 grasses suggest different acclimation types for C3 forbs and C4 grass. The magnitude of acclimation positively correlated with leaf C/N. Our results suggest that non-legume species had a relative high acclimation, although the acclimation type was different between C3 forbs and C4 grasses, and the legume species displayed no acclimation in Rd. Thus, the plant functional types should be taken into account in the grassland ecosystem C models.
AB - Aims Ubiquitous thermal acclimation of leaf respiration could mitigate the respiration increase. However, whether species of different plant functional groups showing distinct or similar acclimation justifies the simple prediction of respiratory carbon (C) loss to a warming climate. Methods In this study, leaf dark respiration (Rd) of illinois bundleflower (IB, legume), stiff goldenrod (GR, C3 forbs), indian grass, little bluestem and king ranch bluestem (IG, LB and KB, C4 grass) were measured with detached leaves sampled in a 17-year warming experiment. Important Findings The results showed that Rd at 20°C and 22°C (R20 and R22) were significantly lower in the warming treatment for all the five species. Lower R22 in warmed than R20 in control in GR, KB, LB and IG imply acclimation homeostasis, but not in IB. The significant decline in temperature sensitivity of respiration (Q10) of GR resulted in the marginal reduction of Q10 across species. No significant changes in Q10 of C4 grasses suggest different acclimation types for C3 forbs and C4 grass. The magnitude of acclimation positively correlated with leaf C/N. Our results suggest that non-legume species had a relative high acclimation, although the acclimation type was different between C3 forbs and C4 grasses, and the legume species displayed no acclimation in Rd. Thus, the plant functional types should be taken into account in the grassland ecosystem C models.
KW - Acclimation
KW - Dark respiration
KW - Legume
KW - Plant functional types
KW - Warming
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U2 - 10.1093/jpe/rty042
DO - 10.1093/jpe/rty042
M3 - Article
AN - SCOPUS:85068504285
SN - 1752-9921
VL - 12
SP - 498
EP - 506
JO - Journal of Plant Ecology
JF - Journal of Plant Ecology
IS - 3
M1 - rty042
ER -