scholarly journals Arbuscular mycorrhizal fungi associated with psammophilic vegetation in Mediterranean coastal sand dunes

2010 ◽  
Vol 8 (S1) ◽  
pp. 96 ◽  
Author(s):  
A. Camprubí ◽  
C. Calvet ◽  
P. Cabot ◽  
M. Pitet ◽  
V. Estaún
2014 ◽  
Vol 37 (1-2) ◽  
pp. 39-62 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Iwona Adamska ◽  
Beata Czerniawska

The occurrence of arbuscular mycorrhizal fungi (AMF) of the, phylum <i>Glomeromycota</i> associated with plants of maritime sand dunes of the Vistula Bar localed in north-eastern Poland was investigated. The presence of AMF was revealed based on spores isolated from field-collected root-rhizosphere soil mixtures and two-cycle pot trap cultures established with parts of these mixtures. The mixtures came from under five species in four plant families. Spores of AMF occurred in 54.8% of the field samples and belonged to eight species. Additionally, culturing of root-soil mixtures in trap cultures revealed nine species and three undescribed morphotypes carlier not found in the field samples. Considering the number of records of species and morphotypes in the field samples and trap cultures, the fungal species most frequently occurring in dunes of the Vistula Bar is <i>Scutellospora dipurpurescens</i>, followed by <i>Archaeospora trappei, Glomus laccatum</i>, and <i>Scu. armeniaca</i>. The overall average spore abundance in the field samples is low (4.48, range O-3l in 100g dry soil). The ovcrall average species richness determined based on spores from both the field and trap cultures was 2 l and ranged from 0 lo 7 in 100g dry soil. The plant harbouring the highest number of species of AMF was <i>Festuca rubra</i>. Of the maritime dune sites of Poland examined to date, the species composition of AMF of the Vistula Bar is most similar to that of the Słowiński National Park. When the comparisons included 15 maritime dune areas located outside Poland, the highest similarity occurred in the Vistula Bar/Canada comparison.


2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Shubhransu Nayak ◽  
Satyaranjan Behera ◽  
Prasad Kumar Dash

Coastal sand dunes are hips and strips formed by sand particles which are eroded and ground rock, derived from terrestrial and oceanic sources. This is considered as a specialized ecosystem characterized by conditions which are hostile for life forms like high salt, low moisture, and low organic matter content. However, dunes are also inhabited by diverse groups of flora, fauna, and microorganisms specifically adapted to these situations. Microbial groups like fungi, bacteria, and actinobacteria are quite abundant in the rhizosphere, phyllosphere, and inside plants which are very much essential for the integration of dunes. Microorganisms in this ecosystem have been found to produce a number of bioactive metabolites which are of great importance to agriculture and industries. Many species of arbuscular mycorrhizal fungi and Rhizobia associated with the roots of dune flora are prolific producers of plant growth promoting biochemicals like indole acetic acid. In addition to that bacteria belonging to Pseudomonas sp., Gammaproteobacteria have been found to have antagonistic activity towards plant pathogens like Rhizoctonia solani, Pythium ultimum, Fusarium oxysporum, and Botrytis cinerea. Many neutrophilic and alkaliphilic eubacterial species, endophytic fungi from dunes have proved their ability for the production of extracellular enzymes like cellulase, pectinase, amylase, protease, tannase, chitinase, etc., which are of great importance to various industries. In this context, it is relevant to observe that the state of Odisha in India has a 480km long coast having numerous sand dunes. These dunes are rich in floral and faunal diversity. However, a comprehensive study is yet to be taken up to explore the microbial diversity and their bioactive potential in this region. The current review sheds light on the enormous potential of sand dune microorganisms in the coast and surfaced the idea and need for such exploration in the state of Odisha, India.


Mycorrhiza ◽  
2020 ◽  
Vol 30 (4) ◽  
pp. 475-489
Author(s):  
N. Kavroulakis ◽  
M. Tsiknia ◽  
I. Ipsilantis ◽  
A. Kavadia ◽  
C. Stedel ◽  
...  

2017 ◽  
Vol 140 ◽  
pp. 14-19 ◽  
Author(s):  
Mostafa Moradi ◽  
Hamid Reza Naji ◽  
Fatemeh Imani ◽  
Sareh Moradi Behbahani ◽  
Mohammad Taghi Ahmadi

1994 ◽  
Vol 72 (3) ◽  
pp. 359-363 ◽  
Author(s):  
S. L. Stürmer ◽  
M. M. Bellei

A sand dune area in Santa Catarina, Brazil, was surveyed every 3 months to determine species composition and seasonal variation of arbuscular mycorrhizal fungi populations associated with Spartina ciliata. Spores from 12 fungal species were recovered. Overall species richness was 5.9. A plot of rank versus abundance provided an indirect measure of the structure of the fungal community and showed a linear relationship among species. A mean of 298 spores/100 g soil were extracted from sand dune samples, with Acaulospora scrobiculata forming 50.9% of the total population. The most frequently recovered species at all sampling dates were Gigaspora albida, Scutellospora weresubiae, A. scrobiculata, and one undescribed Scutellospora species. Spore abundance ranged from 0 to 69 spores/100 g soil for all species except A. scrobiculata (60–247 spores/100 g). Spore abundance of each species did not vary significantly through the season. However, several general trends were observed. The number of spores of Glomus constrictum, Glomus etunicatum, and Acaulospora sp. (No. 2) was maximal in winter, whereas that of Gigaspora albida peaked in spring. Species composition and richness of arbuscular fungi in Brazilian dunes appear to be similar to those in sand dunes along the Atlantic coast of the United States. Key words: arbuscular mycorrhizal fungi, ecology, sand dunes, spore populations, Brazil.


2011 ◽  
Vol 75 (4) ◽  
pp. 339-350 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Beata Czerniawska

In December 1997 and June-July 2000, 49 and 113 rhizosphere soil and root mixtures were collected, respectively, to determine the occurrence of arbuscular mycorrhizal fungi (AMF) of the phylum Glomeromycota in different sites of Israel. Except for five samples taken from under cultivated plants, all the others came from under <em>Ammophila arenaria</em> and <em>Oenothera drummondii</em> colonizing sand dunes adjacent to the Mediterranean Sea. After a continuous cultivation of the mixtures in pot trap cultures with <em>Plantago lanceolata</em> as the plant host up to 2006 and their examination at least twice a year, spores of AMF were found in 41 and 103 cultures with the 1997 and 2000 soil and root mixtures, respectively. The spores represented 30 species and 8 undescribed morphotypes in 7 genera of the <em>Glomeromycota</em>. The AMF most frequently found in Israeli soils were <em>Glomus aurantium</em> and <em>G. constrictum</em>, followed by <em>G. coronatum</em>, <em>G. gibbosum</em>, an undescribed <em>Glomus</em> 178, and <em>Scutellospora dipurpurescens</em>. Up to 2001, 21 species of AMF were known to occur in Israel, and this paper increases this number to 33, of which 11 are new fungi for this country. Moreover, four species, <em>G. aurantium</em>, <em>G. drummondii</em>, <em>G. walkeri</em> and <em>G. xanthium</em>, were recently described as new for science based on spores isolated from Israeli soils. Additionally, the general distribution in the world of the formally described species found in Israel was presented.


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