Evaluation of environmental heterogeneity and its effect on arbuscular mycorrhizal interaction in coastal dunes

2021 ◽  
Vol 51 ◽  
pp. e1371
Author(s):  
Uriel Ramón Jakuosi Solís-Rodríguez ◽  
Patricia Guadarrama ◽  
Laura Hernández-Cuevas ◽  
Luis Salinas-Peba ◽  
José Ramos-Zapata
Keyword(s):  
Mycorrhizal Fungi ◽  
Environmental Heterogeneity ◽  
Biosphere Reserve ◽  
Arbuscular Mycorrhizal ◽  
Coastal Dunes ◽  
Common Species ◽  
Anthropogenic Pressures ◽  
The Status ◽  
Salt Industry

Background: Coastal dune scrub vegetation is established on a substrate that favors biodiversity, but this is currently restricted to small patches. Objective: To determine the status of the arbuscular mycorrhizal fungi (AMF) in this vegetation under different anthropogenic pressures and to propose actions addressing its conservation and restoration. Methods: Plant and fungal community was characterized through taxonomic identification of the AMF and determination of their percentage of viability, number of infective propagules (NIP) and percentage of mycorrhizal colonization. Three contrasting sites were identified in the Ría Lagartos Biosphere Reserve: C = Conserved, IPS = Intermediate perturbation by the salt industry and HPA = high perturbation of anthropogenic origin. In each site, fine roots were collected from 12 common species and compound soil samples were taken. Results and conclusions: Eight AMF species were identified, in IPS, the highest values were presented in terms of percentage of colonization 55.43 ± 6.5, NIP = 142.07 ± 91.2 and viability = 27.6 ± 15.21 % while, in HPA, a higher number of healthy spores were found 43.6 ± 11.5/50 g. Infective propagules are an indicator of a “healthy ecosystem” and were found at a higher proportion in the conserved site.

scholarly journals Arbuscular mycorrhizal association in Conocarpus erectus (Combretaceae) in mangroves from Yucatán, México

2020 ◽  
Vol 98 (1) ◽  
pp. 66-75
Author(s):  
Thai Khan Ramírez-Viga ◽  
José Alberto Ramos-Zapata ◽  
Cristobal Cáceres G. Cantón ◽  
Laura Hernández-Cuevas ◽  
Patricia Guadarrama-Chávez
Keyword(s):  
Mycorrhizal Fungi ◽  
Seasonal Pattern ◽  
Biosphere Reserve ◽  
Arbuscular Mycorrhizal ◽  
Spore Density ◽  
Symbiotic Association ◽  
Conocarpus Erectus ◽  
Mangrove Ecosystems ◽  
Mycorrhizal Association ◽  
The Status

Background: Soil flooding and salinity can be limiting for arbuscular mycorrhizal fungi (AMF), yet they are found in mangrove ecosystems. Arbuscular mycorrhizal association could influence the functioning of mangrove ecosystems, but little is known about its roll and balance in these dynamic systems. Question: What is the status of the arbuscular mycorrhizal association in C. erectus under natural conditions? Species study: Conocarpus erectus is a tree or shrub species that establishes in mangrove ecosystems and is tolerant to elevated levels of salinity and flooding. Study site and dates: Three zones representing a range of conditions of salinity were selected in the Ría Lagartos Biosphere Reserve in Mexico, as well as two contrasting collecting seasons in 2009 and 2010: northwind season and drought season.  Methods: Roots were sampled from C. erectus plants in each zone to evaluate the percentage of arbuscular mycorrhizal colonization and rhizospheric soil samples were taken to evaluate AMF spore density and species richness.  Results: The highest percentage of root colonization was recorded in the site of highest salinity during the northwind season, with this value decreasing in the drought season. The same seasonal pattern was observed in spore density. The highest richness was recorded in the site of lowest salinity in both seasons. A total of 16 AMF species were identified.  Conclusions: The results suggest that seasonality, in its relation with soil salinity and soil water availability, can influence the development and symbiotic association of the AMF in mangrove associated communities dominated by C. erectus.

Arbuscular mycorrhizal fungi of a Mediterranean island (Pianosa), within a UNESCO Biosphere Reserve

2010 ◽  
Vol 46 (5) ◽  
pp. 511-520 ◽  
Author(s):  
Alessandra Turrini ◽  
Cristiana Sbrana ◽  
Patrizia Strani ◽  
Beatrice Pezzarossa ◽  
Rosalba Risaliti ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Biosphere Reserve ◽  
Arbuscular Mycorrhizal ◽  
Mediterranean Island

Determination of the nitrogen source for arbuscular mycorrhizal fungi by 15 N application to soil and plants

Mycorrhiza ◽  
2001 ◽  
Vol 10 (6) ◽  
pp. 267-273 ◽  
Author(s):  
A. Nakano ◽  
Kazushi Takahashi ◽  
Roger T. Koide ◽  
M. Kimura
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Nitrogen Source ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
N Application

scholarly journals Supervivencia y crecimiento de plántulas de Jacaratia mexicana inoculadas con hongos micorrícico arbusculares dentro de un bosque tropical seco

2015 ◽  
Vol 21 (3) ◽  
Author(s):  
Ramón Zulueta-Rodríguez ◽  
Luis G. Hernandez-Montiel ◽  
Bernardo Murillo-Amador ◽  
Miguel V. Córdoba-Matson ◽  
Liliana Lara ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Carica Papaya ◽  
Seedling Survival ◽  
Critical Role ◽  
Tropical Dry Forest ◽  
Arbuscular Mycorrhizal ◽  
Forest Tree ◽  
Dry Forest ◽  
Anthropogenic Pressures ◽  
Growth And Survival

Jacaratia mexicana is not only an endemic and typical tropical dry forest tree of Mexico, it is considered as a direct ancestor of the papayo (Carica papaya). Locally it is mainly used in traditional medicine, for human food or for feeding backyard animals (forage plant), but its use value is very restricted or even unknown. Nevertheless, various abiotic and anthropogenic pressures in its Mexican habitat are causing populations of this tree to decline alarmingly. Arbuscular mycorrhizal fungi (AMF) are microorganisms that have an important role for the regeneration of tree species by increasing their ability to absorb water and nutrients. The aim of this study was to determine the effect of AMF on growth and survival of seedlings of J.mexicana transplanted within a fragmented area of the remaining dry forest located in the central portion of the state of Veracruz. We measured height, stem diameter, number of leaves, percent seedling survival and mycorrhizal colonization. Results showed increases in all growth-related variables when seedlings were inoculated with AMF. The results suggest that micosymbionts can play a critical role for the regeneration of J.mexicana and possibly other species of tree within the dry forest, especially helping this endemic species that is currently surviving in a fragmented environment under unfavorable conditions of low availability of water and nutrients.Supervivencia y crecimiento de plántulas de Jacaratia mexicana inoculadas con hongos micorrícico arbusculares dentro de un bosque tropical secoJacaratia mexicana no es solo un árbol endémico y típico de los bosques tropicales secos de México, sino que se le considera como ancestro evolutivo del papayo (Carica papaya). Se le aprecia en la medicina tradicional, para alimentación del ser humano o cría de animales de traspatio (planta forrajera), pero su valor de uso es muy restringido o incluso desconocido. Sin embargo, presiones abióticas y antropogénicas de su hábitat natural están causando una alarmante reducción de las poblaciones naturales de esta Caricaceae. Los hongos micorrízicos arbusculares (HMA) son microorganismos que juegan un papel importante en la regeneración de especies debido al aumento de su capacidad para absorber agua y nutrientes. El objetivo de este estudio fue determinar el efecto de los HMA sobre el crecimiento y supervivencia de plántulas de J. mexicana trasplantadas dentro de un área fragmentada del bosque tropical seco ubicado en la parte central del estado de Veracruz. Se determinó en este estudio la altura, diámetro, número de hojas, porcentaje de supervivencia y colonización micorrízica. Los resultados muestran incrementos en todas las variables relacionadas con el crecimiento cuando las plántulas fueron inoculadas con HMA. Los resultados sugieren que estos micosimbiontes pueden desempeñar un papel fundamental para el establecimiento de árboles como J. mexicana y posiblemente de otros componentes dentro del bosque tropical seco, los cuales actualmente sobreviven en un entorno fragmentado y bajo condiciones desfavorables de baja disponibilidad de agua y nutrientes.

Mycorrhizal fungi

2009 ◽  
Author(s):  
M. Anwar Maun
Keyword(s):  
Mycorrhizal Fungi ◽  
Higher Plants ◽  
Sand Dunes ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Coastal Dunes ◽  
Active Role ◽  
Land Plant ◽  
Vital Functions ◽  
Mycorrhizal Interactions

Mycorrhizal fungi (mycobionts) form a ubiquitous mutualistic symbiotic association with the roots of higher plants (phytobionts) in coastal sand dunes worldwide. These obligate biotrophs perform vital functions in the survival, establishment and growth of plants by playing an active role in nutrient cycling. As such they serve as a crucial link between plants, fungi and soil at the soil–root interface (Rillig and Allen 1999). Mycorrhizas occur in a wide variety of habitats and ecosystems including aquatic habitats, cold or hot deserts, temperate and tropical coastal dunes, tropical rainforests, saline soils, volcanic tephra soils, prairies and coral substrates (Klironomos and Kendrick 1993). Simon et al. (1993) sequenced ribosomal DNA genes from 12 species of arbuscular mycorrhizal (AM) fungi and confirmed that mycorrhizas (fungal roots) fall into three families. He estimated that they originated about 353–462 million years ago and were instrumental in facilitating the colonization of ancient plants on land. Further evidence was provided by Remy et al. (1994) who discovered arbuscules in an early Devonian land plant, Aglaophyton major, and concluded that mycorrhizal fungi were already established on land > 400 million years ago. Thus the nutrient transfer mechanism of AM fungi was already in existence before the origin of roots. Plant roots probably evolved from rhizomes and AM fungi served as an important evolutionary step in the acquisition of water and mineral nutrients (Brundrett 2002). Over evolutionary time the divergence among these fungi has accompanied the radiation of land plants, and about 200 species of AM fungi have been recognized (Klironomos and Kendrick 1993) that exist in association with about 300 000 plant species in 90% of families (Smith and Read 1997), indicating that AM fungi are capable of colonizing many host species. Approximately 150 of the described mycorrhizal species may occur in sand dunes (Koske et al. 2004). Most host–fungus associations are beneficial to both the plant and the fungus and are thus regarded as mutualistic (++); however, the widespread use of the term mutualism (mutual benefit) for mycorrhizal interactions has been questioned because all associations are not beneficial to both the plant and fungus (Brundrett 2004).

Communities of arbuscular mycorrhizal fungi on a vegetation gradient in tropical coastal dunes

2015 ◽  
Vol 96 ◽  
pp. 7-17 ◽  
Author(s):  
Danielle Karla Alves da Silva ◽  
Renata Gomes de Souza ◽  
Bruno Augusto de Alencar Velez ◽  
Gladstone Alves da Silva ◽  
Fritz Oehl ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Coastal Dunes ◽  
Vegetation Gradient

Ecology of Helicoverpa-Armigera (Hubner) and Heliothis-Punctigera (Wallengren) in the Inland of Australia - Larval Sampling and Host-Plant Relationships During Winter and Spring

1994 ◽  
Vol 42 (3) ◽  
pp. 329 ◽  
Author(s):  
MP Zalucki ◽  
DAH Murray ◽  
PC Gregg ◽  
GP Fitt ◽  
PH Twine ◽  
...  
Keyword(s):  
Plant Species ◽  
Host Plants ◽  
Common Species ◽  
Native Plant ◽  
Species Determination ◽  
Native Plant Species ◽  
The Status ◽  
Plant Families ◽  
First Time

Extensive surveys during the winter months in inland areas of Australia have greatly extended both the range and known hosts of Australia's two pest Helicoverpa species. H. punctigera was the more common species, being collected from c. half of the sites sampled. Here a further 47 plant species in 8 families are recorded as possible host plants; the majority (all except two) are new records of native hosts, and greatly extend the existing lists. H. armigera was less common, being recorded from c. 10% of the 554 sites sampled. This species was reared from 28 species in 10 plant families. Both moth species are recorded for the first time from various native plant species, predominantly in the Asteraceae and Fabaceae. The Goodeniaceae is also added to the host list of both species. Determination of the status of host plants is discussed.

scholarly journals Spore communities of arbuscular mycorrhizal fungi and mycorrhizal associations in different ecosystems, south Australia

2002 ◽  
Vol 26 (3) ◽  
pp. 627-635 ◽  
Author(s):  
Z. I. Antoniolli ◽  
E. Facelli ◽  
P. O'Connor ◽  
D. Miller ◽  
K. Ophel-Keller ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Plantago Lanceolata ◽  
Trifolium Subterraneum ◽  
Arbuscular Mycorrhizal ◽  
Soil P ◽  
Permanent Pasture ◽  
Mycorrhizal Associations ◽  
Sampling Times

Communities of arbuscular mycorrhizal fungi (AMF) were surveyed in different South Australian ecosystems. The soil was wet-sieved for spore extraction, followed by the determination of presence and abundance of AMF species as well as the percentage of root colonization. Mycorrhizal associations were common and there was substantial fungal diversity in different ecosystems. Spores were most abundant in the permanent pasture system and less abundant under continuous wheat. The incidence of mycorrhizal associations in different plant species and the occurrence of Arum and Paris type colonization generally conformed with previous information. Spores of seventeen AMF were verified throughout seasonal changes in 1996 and 1997 in the permanent pasture and on four host species (Lolium perenne, Plantago lanceolata, Sorghum sp. and Trifolium subterraneum) , set up with the same soils under greenhouse conditions. Glomus mosseae was the dominant spore type at all sampling times and in all trap cultures. Mycorrhizal diversity was significantly affected by different sampling times in trap cultures but not in field-collected soil. P. lanceolata, Sorghum sp. and T. subterraneum as hosts for trap cultures showed no differences in richness and diversity of AMF spores that developed in association with their roots. Abundance and diversity were lowest, however, in association with L. perenne , particularly in December 1996. Results show that the combination of spore identification from field-collected soil and trap cultures is essential to study population and diversity of AMF. The study provides baseline data for ongoing monitoring of mycorrhizal populations using conventional methods and material for the determination of the symbiotic effectiveness of AMF key members.

Sign in / Sign up

Export Citation Format

Share Document