This research was funded by the National Basic Research Program in China (2010CB833502), the Special Program of Carbon Sequestration of the Chinese Academy of Sciences (XDA05070205), grants from the “Talents Program” of the Chinese Academy of Sciences, and Special Supports by Bureau of Science and Technology for Resource and Environment of CAS (KZCX2-EW-QN604).
Gene or environment? Species-specific control of stomatal density and length
Article first published online: 23 APR 2012
© 2012 The Authors. Published by Blackwell Publishing Ltd.
Ecology and Evolution
Volume 2, Issue 5, pages 1065–1070, May 2012
How to Cite
Zhang, L., Niu, H., Wang, S., Zhu, X., Luo, C., Li, Y. and Zhao, X. (2012), Gene or environment? Species-specific control of stomatal density and length. Ecology and Evolution, 2: 1065–1070. doi: 10.1002/ece3.233
Ecology and Evolution 2012; 2(5): 1065–1070
- Issue published online: 10 MAY 2012
- Article first published online: 23 APR 2012
- Received: 14 October 2011; Revised: 12 January 2012; Accepted: 24 January 2012
- Environmental control;
- genetic control;
- reciprocal transplant experiment;
- stomatal density;
- stomatal initiation;
- stomatal length
Stomatal characteristics are used as proxies of paleo-environment. Only a few model species have been used to study the mechanisms of genetic and environmental effects on stomatal initiation. Variation among species has not been quantified. In this paper, results from an in situ reciprocal transplant experiment along an elevation gradient in the northeast Tibetan Plateau are reported, in which the relative effects of genetics (original altitude) and environment (transplant altitude) on stomatal density (SD) and length (SL) were quantified. In Thalictrum alpinum, only the environment significantly influenced SD, with the variance component () of the environment found to be much greater than that of genetics () (). In Kobresia humillis, only genetics significantly influenced SD and SL, with the genetics variance component found to be greater than that of the environment (, for SD). These results suggest that the extent to which genetics and the environment determine stomatal initiation and development is species-specific. This needs to be considered when studying genetic or environmental controls of stomatal initiation, as well as when SD and SL are used as proxies for ancient climate factors (e.g., CO2 concentration).