Evidences of inhibited arbuscular mycorrhizal fungal development and colonization in multiple lines of Bt cotton
| Autor: | Hui Lin, Zheng-Lun Yang, Xiu-Hua Chen, Feng-Ling Wang, Ling-Ling Ji, Rui Zhang, Bin Zhao |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Rhizophagus irregularis Appressorium Rhizosphere Ecology biology Hypha fungi 04 agricultural and veterinary sciences biology.organism_classification 03 medical and health sciences 030104 developmental biology Bt cotton Bacillus thuringiensis Botany 040103 agronomy & agriculture Spore germination 0401 agriculture forestry and fisheries Animal Science and Zoology Colonization Agronomy and Crop Science |
| Zdroj: | Agriculture, Ecosystems & Environment. 230:169-176 |
| ISSN: | 0167-8809 |
| DOI: | 10.1016/j.agee.2016.05.008 |
| Popis: | A “sandwich system” was used to investigate the effect of transgenic Bacillus thuringiensis (Bt) cotton (Gossypium hirsutum L.) on early stages of arbuscular mycorrhizal (AM) fungal life cycle. Spore germination and pre-symbiotic hyphal differentiation of AM fungus Rhizophagus irregularis were decreased in the rhizosphere of transgenic Bt cotton isolines (Jin26, GK12 and Jin44) compared with in that of their corresponding parental non-transgenic isolines (Jin7, Si3 and Ji492); and the appressorium number, colonization intensity and arbuscule abundance were lower in Bt plant roots. More collapsed arbuscules were also observed in Bt roots. The results of statistical analysis demonstrate that Bt-trait significantly contributes to the inhibition of pre-symbiotic development and AM fungal colonization, which might be attributed to either Bt toxin toxicity or interference of signal perception between AM fungi and the hosts. The specific mechanism requires further study. |
| Databáze: | OpenAIRE |
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