Arbuscular mycorrhizal and septate endophyte fungal associations in lycophytes and ferns of south India

Muthukumar, Thangavelu; Prabha, Kandasamy

doi:10.1007/s13199-012-0185-z

Cited by 31 publications

(34 citation statements)

References 65 publications

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“…The presence of DSE fungal association in lithophytes that lacked AM association resembles the observations of Lugo et al (2009) in South American bromeliads where all the epiphytic nonmycorrhizal plants were invariably colonized by DSE fungi. Roots of Costus speciosus (Costaceae), Parahemionitis cordata and Drynaria quercifolia reported possessing DSE fungal association in earlier studies lacked DSE fungal structures in the present study (Uma et al 2010;Muthukumar & Prabha 2013;Muthuraja et al 2014). To our knowledge, we report DSE fungal presence in 53 plant species for the first time.…”

Section: Incidence Of Dse Fungal Colonization In Lithophytessupporting

confidence: 45%

“…For example, Drynaria quercifolia reported mycorrhizal when growing on soil was nonmycorrhizal in the present study Muthuraja et al 2014). This fern has been reported to be both mycorrhizal and nonmycorrhizal when growing as an epiphyte (Muthukumar & Udaiyan 2000b;Muthukumar & Prabha 2013). Like D. quercifolia, E. robustum examined was nonmycorrhizal.…”

Section: Incidence Of Am Fungal Colonization In Lithophytessupporting

confidence: 43%

“…Although the roots of several terricolous plant taxa have been examined for the presence of AM fungal association, their occurrence in lithophytic or saxicolous plant species is limited to certain plant groups. For example, the occurrence of AM fungal association has been examined in lithophytic mosses (Zhang & Guo 2007) and ferns (Lehnert et al 2009;Kessler et al 2010;Muthukumar & Prabha 2013;Muthuraja et al 2014). The results of some of these studies suggest that non-mycorrhizal condition appears to be more prevalent in lithophytic than in terricolous taxa (Kessler et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In between these two extremes, there exists a diverse colonization patterns termed as intermediate types. Though AM colonization patterns in terricolous plant species are widely reported, it is rather scanty for lithophytic species (e.g., Muthukumar & Prabha 2013;Muthuraja et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…These fungi termed as dark septate endophyte (DSE) fungi form dematiaceous, regularly septate hyphae with microsclerotia and/or moniliform cells in plant roots. Although these fungi have been recorded in roots of more than 1000 plant species growing in a range of habitats (Jumpponen & Trappe 1998;Mandyam & Jumpponen 2005;Muthukumar & Prabha 2013;Muthuraja et al 2014;Kumar & Muthukumar 2014), their occurrences in many plant taxa and habitats are yet to be examined. Like mycorrhizal fungi, DSE fungi also associate with plants under extreme environmental conditions (Read & Haselwandter 1981;Newsham et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Root fungal associations in some non-orchidaceous vascular lithophytes

2016

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Plant roots in natural ecosystems are colonized by a diverse group of fungi among which the most common and widespread are arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungi. Th ough AM and DSE fungal associations are well reported for terricolous plant species, they are rather poorly known for lithophytic plant species. In this study, we examined AM and DSE fungal association in 72 non-orchidaceous vascular plant species growing as lithophytes in Siruvani Hills, Western Ghats of Tamilnadu, India. Sixty-nine plant species had AM and 58 species had DSE fungal associations. To our knowledge, we report AM fungal association in 42 and DSE fungal association in 53 plant species for the fi rst time. Th ere were signifi cant diff erences in total root length colonization and root length colonized by diff erent AM and DSE fungal structures among plant species. In contrast, the diff erences in AM and DSE fungal colonization among plants in various life-forms and lifecycles were not signifi cant. AM morphology reported for the fi rst time in 56 plant species was dominated by intermediate type AM morphology. A signifi cant negative relationship existed between total root length colonized by AM and DSE fungi. Th ese results clearly suggest that AM and DSE fungal associations are widespread in lithophytes.

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Section: Incidence Of Dse Fungal Colonization In Lithophytessupporting

confidence: 45%

Section: Incidence Of Am Fungal Colonization In Lithophytessupporting

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Root fungal associations in some non-orchidaceous vascular lithophytes

2016

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Arbuscular mycorrhizal colonization in field-collected terrestrial cordate gametophytes of pre-polypod leptosporangiate ferns (Osmundaceae, Gleicheniaceae, Plagiogyriaceae, Cyatheaceae)

et al. 2015

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To determine the mycorrhizal status of pteridophyte gametophytes in diverse taxa, the mycorrhizal colonization of wild gametophytes was investigated in terrestrial cordate gametophytes of pre-polypod leptosporangiate ferns, i.e., one species of Osmundaceae (Osmunda banksiifolia), two species of Gleicheniaceae (Diplopterygium glaucum, Dicranopteris linearis), and four species of Cyatheales including tree ferns (Plagiogyriaceae: Plagiogyria japonica, Plagiogyria euphlebia; Cyatheaceae: Cyathea podophylla, Cyathea lepifera). Microscopic observations revealed that 58 to 97% of gametophytes in all species were colonized with arbuscular mycorrhizal (AM) fungi. Fungal colonization was limited to the multilayered midrib (cushion) tissue in all gametophytes examined. Molecular identification using fungal SSU rDNA sequences indicated that the AM fungi in gametophytes primarily belonged to the Glomeraceae, but also included the Claroideoglomeraceae, Gigasporaceae, Acaulosporaceae, and Archaeosporales. This study provides the first evidence for AM fungal colonization of wild gametophytes in the Plagiogyriaceae and Cyatheaceae. Taxonomically divergent photosynthetic gametophytes are similarly colonized by AM fungi, suggesting that mycorrhizal associations with AM fungi could widely occur in terrestrial pteridophyte gametophytes.

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