Arbuscular mycorrhizal fungi in roots of non-photosynthetic plants, Sciaphila japonica and Sciaphila tosaensis (Triuridaceae)

Yamato, Masahide; Yagame, Takahiro; Iwase, Koji

doi:10.1007/s10267-010-0084-1

Cited by 17 publications

(14 citation statements)

References 27 publications

(45 reference statements)

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“…One OTU (Pa7) belonging to the Paraglomeraceae was an indicator for both woody and exotic species (Table 3). These OTUs showed similarity to database sequences reported previously from a wide range of environmental conditions in terrestrial habitat, varying from stressful to optimal conditions (1,14,18,42,48,49). This shows the high plasticity of these AMF taxa.…”

Section: Discussionsupporting

confidence: 71%

Host identity and functional traits determine the community composition of the arbuscular mycorrhizal fungi in facultative epiphytic plant species

Alguacil

Díaz

Torres

et al. 2018

Preprint

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26The epiphytic vascular flora is scarce and facultative in semiarid Mediterranean 27 ecosystems, thus covering diverse taxonomic groups. However, differently to terrestrial 28 conditions, little is known about the factors driving mycorrhizal communities in 29 epiphytic environments. Here, we investigated the arbuscular mycorrhizal fungi (AMF) 30 harboured by 31 plant species occurring in the trunks of Phoenix dactylifera. We 31 wanted to ascertain if host identity and plant functional traits shape mycorrhizal 32 communities. Specifically, we tested the plant life-cycle (perennial versus annual), the 33 plant life-form (herbaceous versus woody), the plant origin (exotic versus native) and 34 the plant species. 35 The roots were examined by molecular and phylogenetic analysis of AMF community. 36 The plant affiliation to species strongly influenced the AMF assemblages. Plant life-37 form and plant life-cycle also shaped AMF interactions. The AMF community differed 38 between annual and perennial species and higher AMF richness was detected in 39 perennial plants. The indicator species analysis revealed three Operational Taxonomic 40 Units belonging to the Glomeraceae, associated with annual species. However, the 41 epiphytic plants associated with AMF irrespective of whether they were native or not, 42 probably because here no functional differences derive from plant origin. 43 44 IMPORTANCE 45 Arbuscular mycorrhizal (AM) symbiosis has a decisive role in plant nutrient and water 46 uptake by plants, with particular importance in stressful environments. Under semiarid 47 conditions, the facultative epiphytic flora should cope with harsh conditions. While 48 numerous studies have been conducted on factors driving terrestrial AM assemblages, 49 3 the epiphytic environment remains unexplored. We offer new insights into composition 50 of AM communities as shaped by epiphytic plant host identity and functional traits. 51 52 53 54 Keywords: Facultative epiphytes; arbuscular mycorrhizal fungi; diversity; SSU rDNA; 55 semiarid ecosystems; 56 57 58 59Epiphytic habitats are considered as extreme plant environments due to the large fluxes 60 of temperature and low water and nutrient availability they are subjected to. In these 61 conditions, symbiotic associations such as mycorrhizal symbiosis could be crucial 62 because of their widely demonstrated role in plant nutrient and water uptake in 63 terrestrial habits, with particular importance in stressful environments (38). 64Furthermore, the availability of compatible and suitable mycorrhizal fungi might be a 65 key factor constraining the development and distribution of epiphytic plants and vice 66 versa. 67In semiarid Mediterranean ecosystems the epiphytic vascular flora is scarce and 68 facultative or accidental, mainly occurring on the trunks of certain palm species. Here, 69 the microhabitat conditions that originate in the cut leaves formed by the pruning of 70 dead or old leaves allow water and debris accumulation, which enables occasional plant 71 establ...

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Section: Discussionsupporting

confidence: 71%

Host identity and functional traits determine the community composition of the arbuscular mycorrhizal fungi in facultative epiphytic plant species

Alguacil

Díaz

Torres

et al. 2018

Preprint

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“…; Yamato et al . ). The specificity is interpreted as an indication for coevolutionary processes (Kiers & van der Heidjen ; Merckx & Bidartondo ; Merckx et al .…”

Section: Discussionmentioning

confidence: 97%

“…Mycoheterotrophic plants were often found to be highly specific with respect to their mycorrhizal fungi (e.g. Bidartondo et al 2002;Taylor et al 2002;Franke et al 2006;Winther & Friedman 2007Ogura-Tsujita & Yukawa 2008;McCormick et al 2009;Yamato et al 2011). The specificity is interpreted as an indication for coevolutionary processes (Kiers & van der Heidjen 2006;Merckx & Bidartondo 2008;Merckx et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Morpho‐anatomical and molecular characterization of the mycorrhizas of European Polygala species

2012

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The mycorrhizas of 12 species of Polygala (Polygalaceae), including herbs, subshrubs and one shrub, collected from Germany, Mallorca (Spain) and Malta, were investigated by morpho-anatomical and molecular methods. Aseptate hyphae, arbuscules and vesicles indicate an arbuscular mycorrhiza in all species examined. Hyphal spread in Polygala is predominantly, but not exclusively, intracellular and comprises three characteristic stages of colonization: (i) intracellular, linear hyphal growth in a cascading manner after penetration towards the penultimate parenchyma layer (layer 2), (ii) initially linear hyphal growth in the cells of layer 2 from where hyphal branches repeatedly penetrate the anatomically distinct innermost parenchyma layer (layer 1), forming arbuscule-like structures therein which are subject to degeneration, (iii) more branches from the linear hyphae in layer 2 develop, but coil and make contact to the layer outside layer 2 (layer 3) in which arbuscule-like structures similar to those in layer 1 form and degenerate. This general colonization pattern differs in details between the species, and critical comparisons, in particular between the woody P. myrtifolia, the herbaceous Polygala spp. and the mycoheterotrophic Epirixanthes spp. (Polygalaceae) suggest an evolutionary shift of mycorrhizal features within the family towards an optimization of plant benefit through the fungus. Based on the molecular marker 18S rDNA mycorrhizal fungi detected in roots of Polygala spp. are largely restricted to five clades of Glomeraceae 1 (Glomus Group A). This result rejects the hypothesis of a strict symbiotic specificity in Polygalaceae but may stimulate a discussion on functionally compatible groups of fungi.

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“…One of the most significant aspects of the AM fungal associations in Burmannia is its association with fungi in the Glomus group Ab. Glomus group Ab fungi have been confirmed as fungal hosts of various mycoheterotrophic plants in Asia (Yamato et al . 2011a,b), Africa (Franke et al .…”

Section: Discussionmentioning

confidence: 99%

“…So far, the molecular identities of mycorrhizal fungi in only three species of Asian mycoheterotrophs (i.e. Sciaphila japonica, S. tosaensis and Petrosavia sakuraii ) have been investigated (Yamato et al . 2011a,b).…”

Section: Introductionmentioning

confidence: 99%

Evidence for specificity to Glomus group Ab in two Asian mycoheterotrophic Burmannia species

Suetsugu

Kawakita

Katô

2012

Plant Species Biology

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Nonphotosynthetic mycorrhizal plants, so‐called mycoheterotrophic plants, have long attracted the curiosity of botanists and mycologists. Recent advances in molecular methods based on fungal‐specific PCR amplification have dramatically enhanced the identification of their host mycorrhizal fungi. However, studies investigating the fungal hosts of arbuscular mycorrhizae‐forming mycoheterotrophs are still limited in Asia, which is known as one of the diversity hot spots of mycoheterotrophs that parasitize arbuscular mycorrhizae (AM). Therefore, we aimed to reveal the mycorrhizal associations of two Asian, fully mycoheterotrophic Burmannia species by molecular identification. Sequences of the small subunit ribosomal DNA showed that both Burmannia species are associated with several distinct lineages of Glomus group Ab. Because Glomus group Ab fungi have been confirmed as fungal hosts of various mycoheterotrophic plants in Africa and South America, we suggest they are widely exploited by AM‐forming mycoheterotrophs globally.

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Arbuscular mycorrhizal fungi in roots of non-photosynthetic plants, Sciaphila japonica and Sciaphila tosaensis (Triuridaceae)

Cited by 17 publications

References 27 publications

Host identity and functional traits determine the community composition of the arbuscular mycorrhizal fungi in facultative epiphytic plant species

Host identity and functional traits determine the community composition of the arbuscular mycorrhizal fungi in facultative epiphytic plant species

Morpho‐anatomical and molecular characterization of the mycorrhizas of European Polygala species

Evidence for specificity to Glomus group Ab in two Asian mycoheterotrophic Burmannia species

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