\u30df\u30ea\u30f3Soll'erl'a Pac\u52a0ca\u306f\u5357\u65e5\u672c\u3067\u63a1\u53d6\u3055\u308c\u3066\u3044\u308b\u98df\u7528\u306e\u8089\u8cea\u306e\u7d05\u85fb\u3067\u3042\u308b\uff0e \u5343\u8449\u770c\u9928\u5c71\u7523\u30df\u30ea \u30f3\u3092\u5bcc\u5c71\u770c\u5165\u5584\u753a\u3067\u53d6\u6c34\u30fb\u52a0\u6e29\u3057\u305f\u6d77\u6d0b\u6df1\u5c64\u6c34\uff0814oC\uff09\u3092\u7528\u3044\u3066\u85fb\u4f53939\u3092\u6d41\u6c34\u57f9\u990a\u3057\u305f\u7d50\u679c\uff0c \u6975\u3081\u3066\u6210\u9577\u304c\u826f\u304f130 \u65e5\u76ee\u306b\u306f24585 9 (26\u500d\uff09\u3068\u306a\u3063\u305f\uff0e \u307e\u305f\uff0c\u9928\u5c71\u5e02\u306e\u751f\u80b2\u5730\u3067\u306f\u30df\u30ea\u30f3\u85fb\u4f53 \u304c\u6625\u304b\u3089\u590f\u306b\u304b\u3051\u3066\u9ec4\u5316\u3057\u305f\u304c\uff0c\u6df1\u5c64\u6c34\u57f9\u990a\u85fb\u4f53\u306f\u7d05\u8272\u306b\u4fdd\u305f\u308c\u305f\uff0e \u305d\u3053\u3067\uff0c\u9ec4\u5316\u306e\u539f\u56e0\u3092\u63a2\u308b\u305f \u3081\uff0c4\u7a2e\uff08\u7a92\u7d20\u7121\u6dfb\u52a0\uff0c\u30ea\u30f3\u7121\u6dfb\u52a0\uff0c\u7a92\u7d20\u30fb\u30ea \u30f3\u7121\u6dfb\u52a0\u304a\u3088\u3073\u7a92\u7d20\u30fb\u30ea\u30f31\/10\u6fc3\u5ea6\u6dfb\u52a0\uff09\u306e\u6804\u990a \u6dfb\u52a0\u6d77\u6c34\uff08Grund \u6539\u5909\u57f9\u990a\u6db2\uff09\u3067\u57f9\u990a\u3057\u305f\u7d50\u679c\uff0c\u7a92\u7d20\u7121\u6dfb\u52a0\u533a\u306e\u307f\u3067\u9ec4\u5316\u304c\u8a8d\u3081\u3089\u308c\uff0c\u7d05\u8272\u306e\u7dad\u6301 \u306b\u7a92\u7d20\u304c\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u3063\u305f\uff0e \u9ec4\u5316\u85fb\u4f53\u3067\u306f\uff0c\u8272\u5f69\u8272\u5dee\u8a08\u306eL\uff0a\u5024\u306e\u5897\u52a0\u3068a’\u5024\u306e \u6e1b\u5c11\uff0c\u85fb\u4f53\u4e2d\u306e\u30af\u30ed\u30ed\u30d5\u30a3\u30ebα\u304a\u3088\u3073\u30d5\u30a4\u30b3\u30a8\u30ea\u30b9\u30ea\u30f3\u306e\u6e1b\u5c11\u304c\u8a8d\u3081\u3089\u308c\u305f\uff0e \u52a0\u6e29\u6df1\u5c64\u6c34\u306f\u30df\u30ea\u30f3 \u306e\u751f\u7523\u306e\u5897\u5927\u306e\u307f\u306a\u3089\u305a\u4f53\u8272\u306e\u6539\u5584\u306b\u3082\u5f79\u7acb\u3064\u3053\u3068\u304c\u793a\u3055\u308c\u305f\uff0e<\/p>\n
Solieria pacifica is a warm temperate red alga with fleshy thalli, harvested in southern Japan. When this alga was cultured in a tank (100 1 in volume) with running Toyama Bay deep seawater (DSW) warmed up to 14C after pipelined from a depth of 397 m at Nyuuzen, a 26-fold in fresh weight was obtained in 130 days. During culture in DSW, thallus color of S. pacifica was kept red while wild thalli in nature turned yellow from late spring to summer. To examine the factor responsible for red color retention, further culture experiment was designed using four types of enriched seawater: modified Grund Media without NaNO3 (MGM-N), without Na2HPO4\u30fb 12H20 (MGM-P), without NaNO3 and Na2HPO4\u30fb12H20 (MGM-NP\uff09and with 1\/10 concentrations of NaNO3 and Na2HPO4\u30fb12H20 (MGM*1\/1ONP). Yellowed thalli (ca. 12 g\/thaflus) were cultured in separate flasks (300 ml in volume, n=3\/medium, weekly exchange of medium) in an incubator with the following conditions: 20\u30bb\uff0c14L:1OD and 30-40 umol photons m-2 s-' for 34 days. Thallus color was evaluated with the naked-eye, measurement of L* a* b* values using colorimeter (CR-400, Konica Minolta) and quantification of chlorophyll a (Chl a) and phycoerythrin (PE) using photospectrometer (U-3310, Hitachi). Results showed thalli turned yellow in MGM-N after 28 days but kept more or less deepened red in MGM-P, MGM-NP and MGM*1\/1ONP. These color changes were supported by the increase of L* value (lightness) as well as decrease of a* value (degree of redness). Chl a and PE significantly increased with MGM-P (and MGM*1\/1ONP in PE) but decreased with MGM-N and MGM-NP, showing that the presence of nitrogen improved thallus color. Warmed DSW will be an ideal tool not only to enhance the stock but also to keep or improve the thallus color of Solieria pacifica.<\/p>\n","protected":false},"excerpt":{"rendered":"
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