Occurrence of arbuscular mycorrhizal fungi in bromeliad species from the tropical Atlantic forest biome in Brazil

Grippa, Carlos Roberto; Hoeltgebaum, Marcia Patricia; Stürmer, Sidney Luiz

doi:10.1007/s00572-006-0090-5

Cited by 16 publications

(15 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the results reported by other authors for the "seasonal tropical forests" of Mexico and "Atlantic tropical forests" of Brazil (Allen et al, 1993;Grippa et al, 2007). Although Allen et aI.…”

Section: Discussionsupporting

confidence: 83%

Arbuscular mycorrhizas and dark septate endophytes in bromeliads from South American arid environment

Lugo

Molina²,

Crespo

2009

Symbiosis

View full text Add to dashboard Cite

Most plant roots are associated with glomalean fungi forming arbuscular rnycorrhizas (AM) and a wide range are also colonized by ascomycetous dark septate endophytes (DSE). Bromeliaceae species can be epiphytic, rupicolous or terrestrial but their mycorrhizal status is poorly studied. We examined the AM and DSE status of 5 epiphytic and 4 terrestrial Bromeliaceae from an arid area of Central Argentina. The terrestrial species were either dually associated (AM and DSE) or non-associated whereas the epiphytes were only DSE colonized. Terrestrial Brorneliaceae that formed AM-DSE associations were likely responding to the arid conditions of the area and the availability of AM fungal (AMF) spores in the soil. The terrestrial Bromelia ubaniana was not colonized either by AMF or DSE. This could reflect its root morphology and high number of root hairs. DSE are endosymbiotic in the stressful ecosystems experienced by canopy epiphytes in the studied environment. The different fungal associations are discussed in relation to the three Bromeliaceae subfamiles and we suggest that environmental features determine the type of association formed by species in this plant family.

show abstract

Section: Discussionsupporting

confidence: 83%

Arbuscular mycorrhizas and dark septate endophytes in bromeliads from South American arid environment

Lugo

Molina²,

Crespo

2009

Symbiosis

View full text Add to dashboard Cite

show abstract

“…9). For ferns and angiosperms in families such as the Bromeliaceae, Piperaceae and Araceae, habitat is a principal determinant of mycorrhizal status, as epiphytes are often NM, while most terrestrial plants in the same families usually have AM (Lesica and Antibus 1990;Janos 1993;Maffia et al 1993;Michelsen 1993;Gemma and Koske 1995;Grippa et al 2007). Epiphytic ferns in a plantation had NM roots (Nadarajah and Nawawi 1993), but those growing in natural habitats are more likely to have AM (Gemma and Koske 1995;Rains et al 2003).…”

Section: Parasites (18 Families ∼4500 Spp)mentioning

confidence: 97%

Mycorrhizal associations and other means of nutrition of vascular plants: understanding the global diversity of host plants by resolving conflicting information and developing reliable means of diagnosis

2009

View full text Add to dashboard Cite

A comprehensive appraisal of the mycorrhizal literature provides data for 336 plant families representing 99% of flowering plants, with regard to mycorrhizas and other nutritional adaptations. In total, arbuscular (AM), orchid, ectomycorrhizas (EM) and ericoid mycorrhizas and nonmycorrhizal (NM) roots occur in 74%, 9%, 2%, 1% and 6% of Angiosperm species respectively. Many families of NM plants have alternative nutritional strategies such as parasitism, carnivory, or cluster roots. The remaining angiosperms (8%) belong to families reported to have both AM and NM species. These are designated as NM-AM families here and tend to occur in habitats considered non-conducive to mycorrhizal fungi, such as epiphytic, aquatic, extremely cold, dry, disturbed, or saline habitats. Estimated numbers of species in each category of mycorrhizas is presented with lists of NM and EM families. Evolutionary trends are also summarised by providing data on all clades and orders of flowering and non-flowering vascular plants on a global scale. A case study of Western Australian plants revealed that plants with specialised nutritional modes such as carnivory, cluster roots, or EM were much more diverse in this ancient landscape with infertile soils than elsewhere. Detailed information on the mycorrhizal diversity of plants presented here is linked to a website (mycorrhizas.info) to allow data to remain current. Over a century of research effort has resulted in data on mycorrhizal associations of >10,000 plant species that are of great value, but also somewhat of a liability due to conflicting information about some families and genera. It is likely that these conflicts result in part from misdiagnosis of mycorrhizal associations resulting from a lack of standardisation in criteria used to define them. Families that contain both NM and AM species provide a second major source of inconsistency, but even when these are excluded there is a ∼10% apparent error rate in published lists of mycorrhizal plants. Arbuscules are linked to AM misdiagnosis since they are used less often than vesicles to recognise AM associations in roots and apparently occur sporadically in NM plants. Key issues with the diagnosis of mycorrhizal plants are discussed using the Cyperaceae as a case study. Detailed protocols designed to consistently distinguish AM from endophytic Glomeromycotan Fungus Colonisation (GFC) are provided. This review aims to stimulate debate and provide advice to researchers delving into root biology.

show abstract

“…Their ecological importance is primarily associated with the possession of phytotelmata (singular phytotelm = “plant that holds water”), which have the ability to collect water and nutrients [2]–[4]. This characteristic structure is utilized by a wide range of taxonomically diverse species, including bacteria, fungi, insects, amphibians, reptiles, and other plants [3], [5], [6], [7], [8]. Moreover, phytotelmata are considered as ‘biodiversity amplifiers’: their complex architecture and ability to damp environmental fluctuations can generate and harbor high levels of species diversity [9].…”

Section: Introductionmentioning

confidence: 99%

Bromeliad Selection by Two Salamander Species in a Harsh Environment

2014

View full text Add to dashboard Cite

Bromeliad phytotelmata are frequently used by several Neotropical amphibian taxa, possibly due to their high humidity, microclimatic stability, and role as a refuge from predators. Indeed, the ability of phytotelmata to buffer against adverse environmental conditions may be instrumental in allowing some amphibian species to survive during periods of environmental change or to colonize sub-optimal habitats. Association between bromeliad traits and salamanders has not been studied at a fine scale, despite the intimate association of many salamander species with bromeliads. Here, we identify microhabitat characteristics of epiphytic bromeliads used by two species of the Bolitoglossa morio group (B. morio and B. pacaya) in forest disturbed by volcanic activity in Guatemala. Specifically, we measured multiple variables for bromeliads (height and position in tree, phytotelma water temperature and pH, canopy cover, phytotelma size, leaf size, and tree diameter at breast height), as well as salamander size. We employed a DNA barcoding approach to identify salamanders. We found that B. morio and B. pacaya occurred in microsympatry in bromeliads and that phytotelmata size and temperature of bromeliad microhabitat were the most important factors associated with the presence of salamanders. Moreover, phytotelmata with higher pH contained larger salamanders, suggesting that larger salamanders or aggregated individuals might modify pH. These results show that bromeliad selection is nonrandom with respect to microhabitat characteristics, and provide insight into the relationship between salamanders and this unique arboreal environment.

show abstract

Occurrence of arbuscular mycorrhizal fungi in bromeliad species from the tropical Atlantic forest biome in Brazil

Cited by 16 publications

References 11 publications

Arbuscular mycorrhizas and dark septate endophytes in bromeliads from South American arid environment

Arbuscular mycorrhizas and dark septate endophytes in bromeliads from South American arid environment

Mycorrhizal associations and other means of nutrition of vascular plants: understanding the global diversity of host plants by resolving conflicting information and developing reliable means of diagnosis

Bromeliad Selection by Two Salamander Species in a Harsh Environment

Contact Info

Product

Resources

About