New Negombata species discovered: latrunculin mystery solved

Raijman-Nagar, Lilach; Shefer, Sigal; Feldstein-Farkash, Tamar; Novak, Lion; Ilan, Micha

doi:10.1007/s00338-022-02337-5

Cited by 1 publication

(1 citation statement)

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“…It has been commonly assumed that variations in materials and bioactive compounds found in sponges of the same species across a wide geographic range are primarily attributed to environmental conditions. Developmental stage or physiological differences within a species, such as stress or seasonal factors, were also reported ( 10 , 34 ). In the present study, all samples exhibited molybdenum accumulation in high concentrations ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Out of the blue: Hyperaccumulation of molybdenum in the Indo-Pacific sponge Theonella conica

Shoham,

Keren,

Lavy

et al. 2024

Sci. Adv.

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Molybdenum is an essential micronutrient, but because of its toxicity at high concentrations, its accumulation in living organisms has not been widely demonstrated. In this study, we report that the marine sponge Theonella conica accumulates exceptionally high levels of molybdenum (46,793 micrograms per gram of dry weight) in a wide geographic distribution from the northern Red Sea to the reefs of Zanzibar, Indian Ocean. The element is found in various sponge body fractions and correlates to selenium. We further investigated the microbial composition of the sponge and compared it to its more studied congener, Theonella swinhoei . Our analysis illuminates the symbiotic bacterium Entotheonella sp. and its role in molybdenum accumulation. Through microscopic and analytical methods, we provide evidence of intracellular spheres within Entotheonella sp. that exhibit high molybdenum content, further unraveling the intricate mechanisms behind molybdenum accumulation in this sponge species and its significance in the broader context of molybdenum biogeochemical cycling.

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Section: Discussionmentioning

confidence: 99%