| Autor: |
Varma, Ajit, Abbott, Lynette, Werner, Dietrich, Hampp, Rüdiger, Giang Huong Pham, Singh, Anjana, Malla, Rajani, Kumari, Rina, Prasad, Ram, Sachdev, Minu, Rexer, Karl-Heinz, Kost, Gerhard, Luis, Patricia, Kaldorf, Michael, Buscot, François, Herrmann, Sylvie, Peskan, Tanja, Oelmüller, Ralf, Saxena, Anil Kumar, Declerck, Stephané |
| Zdroj: |
Plant Surface Microbiology; 2008, p237-265, 29p |
| Abstrakt: |
An axenically cultivable Mycorrhiza-like-fungus has been described by Varma and his collaborators. The fungus was named Piriformospora indica based on its characteristic pear-shaped chlamydospores (Verma et al. 1998). P. indica tremendously improves the growth and overall biomass production of diverse hosts, including legumes (Varma et al. 1999, 2001; Singh et al. 2002a), medicinal and other plants of economic importance (Rai et al. 2001; Singh et al. 2003a, b). Interestingly, the host spectrum of P. indica is very much like arbuscular mycorrhizal fungi (AMF). In addition, a pronounced growth promotional effect was seen with terrestrial orchids (Blechert et al. 1999; Singh and Varma 2000; Singh et al. 2000, 2002b). The fungus also provides protection when inoculated into the tissue culture-raised plantlets by overcoming the ‘transient transplant shock' on transfer to the field and renders almost 100% survival (Sahay and Varma 1999, 2000). The fungus has great potential in forestry, horticulture, agriculture, viticulture and especially for better establishment of tissue culture-raised plants much needed in the plant industry (Singh et al. 2003). This would open up numerous opportunities for the optimization of plant productivity in both managed and natural ecosystems, while minimizing the risk of environmental damage. The properties of the fungus, Piriformospora indica, have been patented (Varma and Franken 1997, European Patent Office, Muenchen, Germany. Patent No. 97121440.8-2105, Nov. 1998). The culture has been deposited at Braunschweig, Germany (DMS No.11827). An 18S rDNA fragment was deposited at EMBL under the accession number AF 014929. The fungus forms inter- and intracellular hyphae in the root cortex, often differentiating into dense hyphal coils and chlamydospores. Like AM fungi, hyphae multiply within the host cortical tissues and never traverse through the endodermis. Likewise, they also do not invade the aerial portion of the plant (stem and leaves). This chapter details the interaction of P. indica with various groups of microorganisms and higher plants. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
