Issue 68, 2015

The tolerance of growth and clonal propagation of Phragmites australis (common reeds) subjected to lead contamination under elevated CO2 conditions

Abstract

Phragmites australis is a rhizomatous perennial plant with extensive distribution and tolerance. To explore plant growth and clonal propagative tolerance to lead contamination under elevated CO2, they were exposed to combinations of five Pb levels (0, 300, 500, 1500, 3000 mg kg−1) and two CO2 concentrations (380 ± 20 and 760 ± 20 μmol mol−1) in phytotron. Biomass, photosynthetic parameters and rhizome growth were significantly inhibited, while number of axillary shoot buds and daughter apical rhizome shoots were increased by Pb additions. ∼80% of daughter shoots was from daughter axillary shoots, representing a phalanx growth pattern. Under elevated CO2, photosynthetic parameters (excluding stomatal conductance and transpiration rate), growth of clonal modules were increased, facilitating plant biomass accumulation, phalanx growth and spreading strategy. The results suggest that elevated CO2 might improve growth and clonal propagative resistance to Pb contamination through increasing photosynthetic, phalanx growth and population expansion of Phrgagmites australis.

Graphical abstract: The tolerance of growth and clonal propagation of Phragmites australis (common reeds) subjected to lead contamination under elevated CO2 conditions

Article information

Article type
Paper
Submitted
15 May 2015
Accepted
16 Jun 2015
First published
16 Jun 2015

RSC Adv., 2015,5, 55527-55535

Author version available

The tolerance of growth and clonal propagation of Phragmites australis (common reeds) subjected to lead contamination under elevated CO2 conditions

N. Zhang, J. Lin, Y. Yang, Z. Li, Y. Wang, L. Cheng, Y. Shi, Y. Zhang, J. Wang and C. Mu, RSC Adv., 2015, 5, 55527 DOI: 10.1039/C5RA09066K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements