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意外发现：印度洋-太平洋海绵中钼的超积累

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

作者信息

Shoham Shani, Keren Ray, Lavy Adi, Polishchuk Iryna, Pokroy Boaz, Ilan Micha

机构信息

School of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.

Faculty of Materials Engineering and the Russell Berrie Nanotechnology Institute, Technion, Israel Institute of Technology, Haifa 32000, Israel.

出版信息

Sci Adv. 2024 Jul 19;10(29):eadn3923. doi: 10.1126/sciadv.adn3923. Epub 2024 Jul 17.

DOI:10.1126/sciadv.adn3923
PMID:39018411
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC466961/
Abstract

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 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, . Our analysis illuminates the symbiotic bacterium sp. and its role in molybdenum accumulation. Through microscopic and analytical methods, we provide evidence of intracellular spheres within 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.

摘要

钼是一种必需的微量营养素，但由于其在高浓度时具有毒性，其在生物体内的积累尚未得到广泛证实。在本研究中，我们报告称，从红海北部到印度洋桑给巴尔岛的珊瑚礁，这种海洋海绵在广泛的地理分布中积累了极高水平的钼（每克干重46,793微克）。该元素存在于海绵体的各个部分，并与硒相关。我们进一步研究了这种海绵的微生物组成，并将其与其研究较多的同属物种进行了比较。我们的分析揭示了共生细菌 sp. 及其在钼积累中的作用。通过显微镜和分析方法，我们提供了 sp. 内细胞内球体的证据，这些球体显示出高钼含量，进一步揭示了这种海绵物种中钼积累背后的复杂机制及其在更广泛的钼生物地球化学循环背景下的意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/7be493da5f4a/sciadv.adn3923-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/b0f5f0bef44b/sciadv.adn3923-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/a295f8336117/sciadv.adn3923-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/133d354a6dc3/sciadv.adn3923-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/5d8ca710a5d5/sciadv.adn3923-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/9a252f13a257/sciadv.adn3923-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/c25be5afff3a/sciadv.adn3923-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/835b50b179a6/sciadv.adn3923-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/7be493da5f4a/sciadv.adn3923-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/b0f5f0bef44b/sciadv.adn3923-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/a295f8336117/sciadv.adn3923-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/133d354a6dc3/sciadv.adn3923-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/5d8ca710a5d5/sciadv.adn3923-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/9a252f13a257/sciadv.adn3923-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/c25be5afff3a/sciadv.adn3923-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/835b50b179a6/sciadv.adn3923-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/967d/466961/7be493da5f4a/sciadv.adn3923-f8.jpg

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