Different Response of Phosphoenolpyruvate Carboxylase in two Assimilating Organs of Hedysarum Scoparium on Increasing Soil Water Stress

DOI

10.2991/emcs-15.2015.23How to use a DOI?

Keywords

Hedysarum scoparium; Phosphoenolpyruvate carboxylase; Soil water stress.

Abstract

A typical desert shrub species, Hedysarum scoparium (C3 plant) with green rachis, was analyzed on phosphoenolpyruvate carboxylase (PEPC) for considering increasing soil water stress as a probable driving factor to affect assimilation of plant in arid areas. The samples were planted in cultivation plots at depths of 1.4 m, 2.4 m and 3.4 m sandy soil respectively in this study. Water was periodically supplemented at the bottom of each cultivation plot to simulate soil water stress. The studies of activities of PEPC in two assimilating organs indicated that different photosynthetic organs possess different traits of CO2 fixation. The results showed that PEPC presented both in leaflet and rachis of H. scoparium, and enhanced largely with the increasing soil depth. The result suggest that there is a adaptation strategy for desert species with green rachis expanding C4 photosynthesis in H. scoparium under severe soil water deficit.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jiajia Wang
AU  - Congxia Hu
AU  - Chunmei Gong
PY  - 2015/01
DA  - 2015/01
TI  - Different Response of Phosphoenolpyruvate Carboxylase in two Assimilating Organs of Hedysarum Scoparium on Increasing Soil Water Stress
BT  - Proceedings of the International Conference on Education, Management, Commerce and Society
PB  - Atlantis Press
SP  - 105
EP  - 108
SN  - 2352-5398
UR  - https://doi.org/10.2991/emcs-15.2015.23
DO  - 10.2991/emcs-15.2015.23
ID  - Wang2015/01
ER  -