Fungal endophytes from two orchid species - pointer towards organ specificity
2013
Sawmya, K., Manipal University, Karnataka (India). Division of Biotechnology | Vasudevan, T.G., Manipal University, Karnataka (India). Division of Biotechnology | Murali, S.R., Manipal University, Karnataka (India). Division of Biotechnology
Fungal endophytes may influence plant communities by altering the host´s fitness either positively or negatively. Littele is known, however, about their host/organ specifity, life style and role in plant-fungus symbiosis under varying environmental conditions. We compared the leaf and root endophyte assemblages of two orchids (Bulbophyllum neilgherrense and Phylidota pallida) from natural forests and greenhouse conditions. Xylariaceae species were consistently associated with leaf and root tissues, while Guignardia and Pestalotiopsis were found predominantly in the leaf tissuess of both orchids. Correspondence analysis of the endophyte assemblages showed that the endophytes exhibited distinct organ but little host specifity. More endophytes were shared by the two different orchids growing in the same location were compared to endophyte assemblages of a single orchid from different locations. Considering the influence of endophytes in shaping the host´s community, diverse habitats must be screened vigorously to address questions regarding the role of endophytes in host-endophytes interactions.
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