A study on micro-fungi in arid areas: Notes on soil saprotrophs and animal opportunistic pathogens

Ciccarone, Claudio; Rambelli, A.

doi:10.1080/11263500012331350305

Cited by 7 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, in the desert Evolution Canyon, nearly half of the isolated species (including 24 coelomycete species with picnidial fruit bodies) occur also (or mainly) on various plants (Ellis, 1971, 1976; Sutton, 1980). Some of the species are considered animal‐opportunistic pathogens (Domsch et al ., 1980; Ciccarone & Rambelli, 2000). For example, B. brongniartii, occurring frequently and abundantly in almost all studied localities, is known as a pathogen on numerous insects.…”

Section: Discussionmentioning

confidence: 99%

“…Numerous mycological studies have been conducted in desert soils all over the world (e.g. Ranzoni, 1968; Halwagy, Moustafa & Kamel, 1982; Skujins, 1984; Abdullah, Al‐Khesraji & Al‐Edany, 1986; Hashem, 1991; Mouchacca, 1993; El‐Said, 1994; Ciccarone & Rambelli, 1998, 2000; Mulder & El‐Hendawy, 1999). Mycologically, the Israeli desert zone is still a blank patch on the Israeli map.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive spatiotemporal distribution of soil microfungi in ‘Evolution Canyon’ III, Nahal Shaharut, extreme southern Negev Desert, Israel

Grishkan

Beharav

Kirzhner

et al. 2007

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

We examined adaptive spatiotemporal mycobiota structure in the soil of 'Evolution Canyon' III, Nahal Shaharut, in the extreme southern Negev, Israel. A total of 223 species representing 80 genera were isolated using the soil dilution plate method. The microfungal communities in all localities and seasons were characterized by a superdominance of dark-coloured species with large multicelled conidia: Ulocladium atrum, U. botrytis, Alternaria alternata, and Al. chlamydospora . Species of the genus Aspergillus (mainly As. fumigatus ) and teleomorphic ascomycetes comprised a basic part of the thermotolerant mycobiota obtained at a temperature of 37 ° C. Isolate density displayed high positive dependence on organic matter content. Density was subject to drastic spatiotemporal (especially spatial) fluctuations, with maximum levels found in the shady valley bottom locality. The lowest biodiversity indices were estimated in localities under shrubs and in the most stressful summer and spring. The results demonstrated a clear effect of harsh desert climatic and edaphic selection on the adaptive variation of the mycobiota studied.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adaptive spatiotemporal distribution of soil microfungi in ‘Evolution Canyon’ III, Nahal Shaharut, extreme southern Negev Desert, Israel

Grishkan

Beharav

Kirzhner

et al. 2007

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

show abstract

“…In terms of trophic guilds from FUNGuild, pathotrophism was the most abundant category with 34% of total fungal reads, although this may reflect the difficulties of guild assignment in very diverse genera such as Giberella and Fusarium known to contain saprobes [58]. Pathotrophsymbiotrophism was the second abundant trophic mode with 23% of total reads.…”

Section: Community Characteristics and Comparison With Other Arid Envmentioning

confidence: 99%

“…Saprotrophism was the third most abundant category overall, at 19% of total reads, which agrees with the family level results discussed above. The spore-forming habit of many saprotrophs may allow their survival in mostly dry soils without any physiological activity [58,59].The least abundant trophic category was saprotroph-symbiotroph, accounting for only 0.2% of reads (Fig. 4).…”

Section: Community Characteristics and Comparison With Other Arid Envmentioning

confidence: 99%

Metal-Tolerant Fungal Communities Are Delineated by High Zinc, Lead, and Copper Concentrations in Metalliferous Gobi Desert Soils

et al. 2019

View full text Add to dashboard Cite

The soil fungal ecology of the southern Gobi region of Mongolia has been little studied. We utilized the ITS1 region from soil DNA to study possible influences on soil fungal community variation. In the sample network, a distinctive fungal community was closely associated with high zinc (Zn), lead (Pb) and copper (Cu) concentrations. The pattern of occurrence suggests that high metal concentrations are natural and not a product of mining activities. The metal-associated fungal community differs little from the 'normal' community in its major OTUs, and in terms of major fungal guilds and taxa, and its distinctiveness depends on a combination of many less common OTUs. The fungal community in the sites with high metal concentrations is no less diverse than in areas with normal background levels. Overall, these findings raise interesting questions of the evolutionary origin and functional characteristics of this apparently 'metal tolerant' community, and of the associated soil biota in general. It is possible that rehabilitation of metalcontaminated mined soils from spoil heaps could benefit from the incorporation of fungi derived from these areas.

show abstract

“…Soil pathogens play an important role in controlling plant diversity, ecosystem functions, and the health of both humans and animals (Bever et al, 2015 ; Ciccarone & Rambelli, 2000 ). They influence plant diversity by altering plant competition and community composition (Delgado‐Baquerizo et al, 2020 ; Dinoor & Eshed, 1984 ).…”

Section: Introductionmentioning

confidence: 99%

The interaction of climate, plant, and soil factors drives putative soil fungal pathogen diversity and community structure in dry grasslands

Zhang,

Fan,

et al. 2023

Environ Microbiol Rep

View full text Add to dashboard Cite

Soil pathogens play important roles in shaping soil microbial diversity and controlling ecosystem functions. Though climate and local environmental factors and their influences on fungal pathogen communities have been examined separately, few studies explore the relative contributions of these factors. This is particularly crucial in eco‐fragile regions, which are more sensitive to environmental changes. Herein we investigated the diversity and community structure of putative soil fungal pathogens in cold and dry grasslands on the Tibetan Plateau, using high‐throughput sequencing. The results showed that steppe soils had the highest diversity of all pathogens and plant pathogens; contrastingly, meadow soils had the highest animal pathogen diversity. Structural equation modelling revealed that climate, plant, and soil had similar levels of influence on putative soil fungal pathogen diversity, with total effects ranging from 52% to 59% (all p < 0.001), with precipitation exhibiting a stronger direct effect than plant and soil factors. Putative soil fungal pathogen community structure gradually changed with desert, steppe, and meadow, and was primarily controlled by the interactions of climate, plant, and soil factors rather than by distinct factors individually. This finding contrasts with most studies of soil bacterial and fungal community structure, which generally report dominant roles of individual environmental factors.

show abstract

A study on micro-fungi in arid areas: Notes on soil saprotrophs and animal opportunistic pathogens

Cited by 7 publications

References 21 publications

Adaptive spatiotemporal distribution of soil microfungi in ‘Evolution Canyon’ III, Nahal Shaharut, extreme southern Negev Desert, Israel

Adaptive spatiotemporal distribution of soil microfungi in ‘Evolution Canyon’ III, Nahal Shaharut, extreme southern Negev Desert, Israel

Metal-Tolerant Fungal Communities Are Delineated by High Zinc, Lead, and Copper Concentrations in Metalliferous Gobi Desert Soils

The interaction of climate, plant, and soil factors drives putative soil fungal pathogen diversity and community structure in dry grasslands

Contact Info

Product

Resources

About