Strong tolerance of blue-green alga Microcystis flos-aquae to very high pressure
Strong tolerance of blue-green alga Microcystis flos-aquae to very high pressure
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蓝绿藻微囊藻对极高压力的强耐受性
DOI：
10.1016/j.jpcs.2014.08.008
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
E.
中科院分区：
文献类型：
--
作者：
Ono;F.;Nishihira;N.;Hada;Y.;Mori;Y.;Takarabe;K.;Saigusa;M.;Matsushima;Y.;Yamazaki;D. and Ito;E.
在我们以前的报道中，有一些藓类Venturiellacolus的孢子能耐受20 GPa的超高压30 min，并萌发出30 μm长的原丝体。然而，这些孢子没有进一步生长，并在接种后孵育约30天后消失。另一方面，蓝绿色藻类水华微囊藻（Microcystis flos-aquaecame）的菌落在接种苔藓孢子后约76天出现。许多这些菌落出现在苔藓孢子消失的地方。这些菌落是由附着在苔藓孢子壳上的藻类形成的，它们在暴露于20 GPa的高压下后存活下来。虽然高压暴露的藻类菌落的出现与未暴露于高压的对照组相比延迟了约50天，但它们的形状和颜色似乎与对照组没有差异。蓝绿榴辉岩的耐压能力非常强，暴露在相当于距地球表面550-600公里深度的高压下，就在下地幔之上，它还能存活。
It was shown in our previous reports that a few spores of mossVenturiellacould tolerate the very high pressure of 20 GPa for 30 min and germinated a protonema to the length of 30 μm. However, these spores did not grow any further, and disappeared at around 30 days of incubation after seeded. On the other hand, colonies of blue-green algaMicrocystis flos-aquaecame to appear about 76 days after the moss spores were seeded. Many of these colonies appeared at the places where the moss spores had disappeared. These colonies were formed by the algae that had adhered to the spore cases of the moss and survived after exposure to the very high pressure of 20 GPa. Though the appearance of the colonies of high pressure exposed algae was delayed by about 50 days compared with that of the control group which was not exposed to high pressure, there seems no difference in their shape and color from those of the control group. The pressure tolerance of blue-green alga is found to be enormously strong, and it can survive after exposure to the high pressure which corresponds to the depth of about 550–600 km from the surface of the Earth, just above the lower mantle.