Abstract
The formation of a common mycorrhizal network (CMN) between roots of different plant species enables nutrient transfers from one plant to another and their coexistence. However, almost all studies on nutrient transfers between CMN-connected plants have separately, but not simultaneously, been demonstrated under the same experimentation. Both conspecific and heterospecific seedlings of Cinnamomum camphora, Bidens pilosa, and Broussonetia papyrifera native to a karst habitat in southwest China were concurrently grown in a growth microcosm that had seven hollowed compartments (six around one in the center) being covered by 35.0-μm and/or 0.45-μm nylon mesh. The Ci. camphora in the central compartment was supplied with or without Glomus etunicatum and 15 N to track N transfers between CMN-connected conspecific and heterospecific seedlings. The results showed as follows: significant greater nitrogen accumulations, biomass productions, 15 N content, % N transfer , and the N transfer amount between receiver plant species ranked as Br. papyrifera≈Bi. pilosa > Ci. camphora under both M + and M − , and as under M + than under M − for Ci. camphora but not for both Bi. Pilosa and Br. papyrifera; the CMN transferred more nitrogen ( 15 N content, % N transfer , and N transfer amount) from the donor Ci. camphora to the heterospecific Br. papyrifera and Bi. pilosa, with a lower percentage of nitrogen derived from transfer (%NDFT). These findings suggest that the CMN may potentially regulate the nitrogen transfer from a donor plant to individual heterospecific receiver plants, where the ratio of nitrogen derived from transfer depends on the biomass strength of the individual plants.
Original language | English |
---|---|
Pages (from-to) | 8828-8837 |
Number of pages | 10 |
Journal | Environmental Science and Pollution Research |
Volume | 26 |
Issue number | 9 |
Early online date | 2 Feb 2019 |
DOIs | |
Publication status | Published - 1 Mar 2019 |
Funding
We thank Prof. Gui-Jie Ding, Dr Li-Fei Yu, Dr Ji-Ming Liu, Dr De-Lu Wang, Dr Xiao-Li Wei, and Dr Zhi-Tai Wang (Forestry College of Guizhou University) for supporting this research. We thank professor Xin-hua He (College of Resources and Environment, Southwest University) for the suggestions and writing helps of this paper, and we thank Chun-Yu Wu and Pei-Yun Xie for helping with the experimental process.
Funders | Funder number |
---|---|
NSFC 31360106 | 31660156, 31000204, 31360106, 31560223 |
Program Foundation on Training the Young Talents for Science | |
Provincial Key Technologies R&D Program of Guizhou Province of China | |
Qian-ke-he Platform Talents | [2017] 5788 |
Young Talents for Science and Technology | |
National Natural Science Foundation of China | |
Guizhou University | |
Southwest University | |
Department of Education of Guizhou Province | |
Agricultural Science and Technology Innovation Program |
Keywords
- N
- Bidens pilosa
- Broussonetia papyrifera
- Cinnamomum camphora
- Common mycorrhizal networks
- Glomus etunicatum
- Nitrogen transfer