Fungal Endophytes from Two Orchid Species – Pointer Towards Organ Specificity

Kotian, Sawmya and Thanvanthri, Gururajan Vasudevan and Murali, TS (2013) Fungal Endophytes from Two Orchid Species – Pointer Towards Organ Specificity. Czech Mycology , 65 (1). pp. 89-101. ISSN 1805-1421

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Fungal endophytes may influence plant communities by altering the host’s fitness either positively or negatively. Little is known, however, about their host/organ specificity, 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 Pholidota pallida) from natural forests and greenhouse conditions. Xylariaceae species were consistently associated with leaf and root tis-sues, while Guignardia and Pestalotiopsis were found predominantly in the leaf tissues of both or- chids. Correspondence analysis of the endophyte assemblages showed that the endophytes exhibited distinct organ but little host specificity. More endophytes were shared by the two different orchids growing in the same location when compared to endophyte assemblages of a single orchid from differ-ent 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-endophyte interactions.

Item Type: Article
Uncontrolled Keywords: Fungal endophytes; Environment; Orchids; Bulbophyllum Neilgherrense; Pholidota pallida
Subjects: Life Sciences > MLSC Manipal
Depositing User: KMC Manipal
Date Deposited: 13 Dec 2013 06:42
Last Modified: 13 Dec 2013 06:42

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