Presence of <i>Aspergillus sydowii</i>, a pathogen of gorgonian sea fans in the marine sponge <i>Spongia obscura</i>

Ein-Gil, Neta; Ilan, Micha; Carmeli, Shmuel; Smith, Garriet W.; Pawlik, Joseph R.; Yarden, Oded

doi:10.1038/ismej.2009.18

Cited by 66 publications

(36 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This prediction is consistent with the broad similarity of disease-related microorganisms found in various marine hosts, including sponges, gorgonian sea fans and corals (Webster et al, 2008;Ein-Gil et al, 2009;Negandhi et al, 2010).…”

Section: Resultssupporting

confidence: 72%

Marine microbial symbiosis heats up: the phylogenetic and functional response of a sponge holobiont to thermal stress

et al. 2013

View full text Add to dashboard Cite

Large-scale mortality of marine invertebrates is a major global concern for ocean ecosystems and many sessile, reef-building animals, such as sponges and corals, are experiencing significant declines through temperature-induced disease and bleaching. The health and survival of marine invertebrates is often dependent on intimate symbiotic associations with complex microbial communities, yet we have a very limited understanding of the detailed biology and ecology of both the host and the symbiont community in response to environmental stressors, such as elevated seawater temperatures. Here, we use the ecologically important sponge Rhopaloeides odorabile as a model to explore the changes in symbiosis during the development of temperature-induced necrosis. Expression profiling of the sponge host was examined in conjunction with the phylogenetic and functional structure and the expression profile of the symbiont community. Elevated temperature causes an immediate stress response in both the host and symbiont community, including reduced expression of functions that mediate their partnership. Disruption to nutritional interdependence and molecular interactions during early heat stress further destabilizes the holobiont, ultimately leading to the loss of archetypal sponge symbionts and the introduction of new microorganisms that have functional and expression profiles consistent with a scavenging lifestyle, a lack virulence functions and a high growth rate. Previous models have postulated various mechanisms of mortality and disease in marine invertebrates. Our study suggests that interruption of symbiotic interactions is a major determinant for mortality in marine sessile invertebrates. High symbiont specialization and low functional redundancy, thus make these holobionts extremely vulnerable to environmental perturbations, including climate change.

show abstract

Section: Resultssupporting

confidence: 72%

Marine microbial symbiosis heats up: the phylogenetic and functional response of a sponge holobiont to thermal stress

et al. 2013

View full text Add to dashboard Cite

show abstract

“…In contrast, the DGGE bands from the white A. compressa tissues were most closely related to environmental sequences (polluted sands, microbial flocs and engineered microfiltration systems), to a 16S rRNA gene sequence derived from a heat stressed sponge, or to phylotypes implicated in coral diseases (white plague-like syndrome and black band disease). Whether sponges act as reservoirs for coral-disease associated bacteria, as has been proposed previously (Ein-Gil et al 2009, Negandhi et al 2010), or whether they are merely colonized by opportunistic bacteria capable of utilizing decaying material remains to be investigated. Indeed, many marine pathogens can be found in the environment, so their recovery from sponge tissues is not unexpected.…”

Section: Resultsmentioning

confidence: 99%

Sponge white patch disease affecting the Caribbean sponge Amphimedon compressa

Angermeier¹,

Glöckner²,

Pawlik³

et al. 2012

Dis. Aquat. Org.

View full text Add to dashboard Cite

We report on a novel sponge disease, hereafter termed 'sponge white patch' (SWP), affecting the Caribbean sponge species Amphimedon compressa. SWP is characterized by distinctive white patches of variable size that are found irregularly on the branches of diseased sponges. Nearly 20% of the population of A. compressa at Dry Rocks Reef, Florida, USA, showed symptoms of SWP at the time of investigation

show abstract

“…The role (if any) of the fungi found in the Psammocinia species has yet to be elucidated. Since sponges are filter feeders, it is conceivable that fungal propagules have been filtered from the water (and some of these may originate from land, via dust and runoff) and are lodged in the sponge tissues, thus having no active role in the biology of the sponge (as has been suggested in the case of the coral pathogen Aspergillus sydowii, which is found in Spongia obscura [11]). The aim of this study was to characterize the marine Trichoderma isolates to assess the potential of marine-derived isolates as halotolerant biocontrol agents.…”

mentioning

confidence: 99%

Marine Isolates of Trichoderma spp. as Potential Halotolerant Agents of Biological Control for Arid-Zone Agriculture

Gal-Hemed

Atanasova

Komoń-Zelazowska

et al. 2011

Appl Environ Microbiol

Self Cite

120

View full text Add to dashboard Cite

The scarcity of fresh water in the Mediterranean region necessitates the search for halotolerant agents of biological control of plant diseases that can be applied in arid-zone agriculture irrigated with saline water. Among 29 Trichoderma strains previously isolated from Mediterranean Psammocinia sp. sponges, the greatest number of isolates belong to the Trichoderma longibrachiatum-Hypocrea orientalis species pair (9), H. atroviridis/T. atroviride (9), and T. harzianum species complex (7), all of which are known for high mycoparasitic potential. In addition, one isolate of T. asperelloides and two putative new species, Trichoderma sp. O.Y. 14707 and O.Y. 2407, from Longibrachiatum and Strictipilosa clades, respectively, have been identified. In vitro salinity assays showed that the ability to tolerate increasing osmotic pressure (halotolerance) is a strain-or clade-specific property rather than a feature of a species. Only a few isolates were found to be sensitive to increased salinity, while others either were halotolerant or even demonstrated improved growth in increasingly saline conditions. In vitro antibiosis assays revealed strong antagonistic activity toward phytopathogens due to the production of both soluble and volatile metabolites. Two marine-derived Trichoderma isolates, identified as T. atroviride and T. asperelloides, respectively, effectively reduced Rhizoctonia solani damping-off disease on beans and also induced defense responses in cucumber seedlings against Pseudomonas syringae pv. lachrimans. This is the first inclusive evaluation of marine fungi as potential biocontrol agents.

show abstract

Presence of Aspergillus sydowii, a pathogen of gorgonian sea fans in the marine sponge Spongia obscura

Cited by 66 publications

References 11 publications

Marine microbial symbiosis heats up: the phylogenetic and functional response of a sponge holobiont to thermal stress

Marine microbial symbiosis heats up: the phylogenetic and functional response of a sponge holobiont to thermal stress

Sponge white patch disease affecting the Caribbean sponge Amphimedon compressa

Marine Isolates of Trichoderma spp. as Potential Halotolerant Agents of Biological Control for Arid-Zone Agriculture

Contact Info

Product

Resources

About