Journal
SYMBIOSIS
Volume 50, Issue 3, Pages 157-164Publisher
SPRINGER
DOI: 10.1007/s13199-010-0058-2
Keywords
Arbuscular mycorrhizal fungi; Glomus mosseae; Lathyrus sativus; Mesorhizobium mediterraneum; Rhizobia; Sulphate salt stress
Categories
Funding
- National Basic Research Program of China [2007CB106804]
- Program for Public Service in Agriculture [nyhyzx07-022]
- Lanzhou University [582402, 582403]
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In order to examine the influence of microsymbionts on plants, arbuscular mycorrhizal (AM) fungi and rhizobia were used to examine the growth of Lathyrus sativus under sulphate salt stress. Seedlings of L. sativus were inoculated with a combination of selected microsymbionts. Plants were grown under greenhouse conditions with five Na2SO4 concentrations (0, 1%, 2%, 3% and 4% (weight : weight)). The inoculations combinations used were the AM fungus, Glomus mosseae and/or the rhizobium, Mesorhizobium mediterraneum. The results showed that sulphate salinity inhibited plant growth and biomass production. However, compared with the control treatments, dual-inoculation of G. mosseae and M. mediterraneum reduced the harmful influence of sulphate salinity. Parmeters including plant height, the extent of AM colonization, total biomass, nodules biomass, P concentration, N concentration and proline concentration confirmed that dual inoculation plays a vital role in promoting the growth of L. sativus under sulphate salt stress. The results suggested that the use of this dual inoculation could be exploited in grassland plantation establishment and in pastoral ecosystem reclamation programmes in arid and semi-arid areas subject to moderate salt contamination.
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