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1.
図書 |
ed. by B. C. Kuo
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2.
図書 |
Jean-Louis Vincent ... [et al.]
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3.
図書 |
T.W. Sadler ; computer illustrations by Susan L. Sadler-Redmond ; scanning electron micrographs by Kathy Tosney ; ultrasound images by Jan Byrne, Hytham Imseis
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4.
図書 |
Susie L. Steinbach
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5.
論文(リポジトリ) |
Hanzawa, Eiko ; Sasaki, Kazuhiro ; Nagai, Shinsei ; Obara, Mitsuhiro ; Fukuta, Yoshimichi ; Uga, Yusaku ; Miyao, Akio ; Hirochika, Hirohiko ; Higashitani, Atsushi ; Maekawa, Masahiko ; Sato, Tadashi
概要:
Background: Root system architecture is an important trait affecting the uptake of nutrients and water by crops. Shallower root systems preferentially take up nutrients from the topsoil and help avoid unfavorable environments in deeper
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soil layers. We have found a soil-surface rooting mutant from an M2 population that was regenerated from seed calli of a japonica rice cultivar, Nipponbare. In this study, we examined the genetic and physiological characteristics of this mutant. Results: The primary roots of the mutant showed no gravitropic response from the seedling stage on, whereas the gravitropic response of the shoots was normal. Segregation analyses by using an F2 population derived from a cross between the soil-surface rooting mutant and wild-type Nipponbare indicated that the trait was controlled by a single recessive gene, designated as sor1. Fine mapping by using an F2 population derived from a cross between the mutant and an indica rice cultivar, Kasalath, revealed that sor1 was located within a 136-kb region between the simple sequence repeat markers RM16254 and 2935-6 on the terminal region of the short arm of chromosome 4, where 13 putative open reading frames (ORFs) were found. We sequenced these ORFs and detected a 33-bp deletion in one of them, Os04g0101800. Transgenic plants of the mutant transformed with the genomic fragment carrying the Os04g0101800 sequence from Nipponbare showed normal gravitropic responses and no soil-surface rooting. Conclusion: These results suggest that sor1, a rice mutant causing soil-surface rooting and altered root gravitropic response, is allelic to Os04g0101800, and that a 33-bp deletion in the coding region of this gene causes the mutant phenotypes.
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6.
論文(リポジトリ) |
Osada, Yohei ; 長田, 庸平
概要:
Tornodoxa paraleptopalta Ueda is newly recorded from Yakushima Island, Kagoshima Prefecture. The specimen of adult and t
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he male genitalia are shown. This species is recorded from the Ryukyu Islands for the first time.
ヒメハイジロキバガは大阪府産の標本に基づいて記載され, これまで日本 (本州, 九州) および台湾から知られていた. 大阪市立自然史博物館での標本調査において, 屋久島産の本種の標本が確認されたので, ここに記録する. 琉球列島では初記録である. 続きを見る |
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7.
論文(リポジトリ) |
Osada, Yohei ; 長田, 庸平
概要:
Lopharcha psathyra Diakonoff is newly recorded from Yakushima Island. The specimen and female genitalia are shown. This
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species is recorded from the Ryukyu Islands for the first time.
スジケマダラハマキはこれまで日本の本州, 四国, 九州から知られていた.寄主植物は, クスノキ科のシロダモとクスノキである. 大阪市立自然史博物館での標本調査において, 屋久島産の本種の標本が確認されたので, 琉球列島初記録としてここに記録する. 続きを見る |
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8.
論文(リポジトリ) |
Osada, Yohei ; 長田, 庸平
概要:
Caloptilia zachrysa (Meyrick) is newly recorded from Yakushima Island. A female adult of the species and female genitali
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a are shown.
リンゴの害虫として知られるリンゴハマキホソガは日本, 台湾, 韓国, 中国, インド, スリランカに分布し, 日本国内では本州, 四国, 九州, 沖縄島から知られていた. 大阪市立自然史博物館での標本調査において, 屋久島産の本種の標本が確認されたので, ここに記録する.屋久島では初記録である. 続きを見る |
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9.
論文(リポジトリ) |
Karasawa, Shigenori ; 唐沢, 重考 ; Nagata, Satomi ; 長田, 諭実 ; Honda, Masanao ; 本多, 正尚
概要:
Adult female and immature specimens of Typopeltis crucifer Pocock, 1894, were collected from Taramajima Island, Sakishim
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a Islands, southwestern Japan. A phylogenetic tree built using the mitochondrial COI gene (620 bp) of T. crucifer from Sakishima Islands revealed that specimens from Ishigakijima Island comprised two genetic groups. One of these groups formed a clade with specimens from Taramajima Island, and the other group was closely related to specimens from Iriomotejima Island. Our finding indicates that phylogeographic analyses on soil-dwelling invertebrates are expected to provide new insights into the paleogeographic processes that have shaped the Ryukyu Islands.
多良間島から雌成体と幼体のタイワンサソリモドキを採集した. ミトコンドリアCOI遺伝子 (620 bp) を用いた系統解析の結果, 石垣島には2つの遺伝グループがあり, そのうちの一つは多良間島の個体とクレードを構成することが分かった. また, もう一つのグループは西表島の個体とクレードを構成した. 本研究の結果, 土壌性無脊椎動物の系統地理学的研究は, 先島諸島の系統地理学に新たな知見をもたらすことを示唆する. 続きを見る |
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10.
論文(リポジトリ) |
Nomura, Keiichi ; 野村, 恵一 ; Baird, Andrew H. ; Suzuki, Go ; 鈴木, 豪
概要:
A survey of Montipora corals fauna was conducted around Minami-Daitojima Island in June 2022 and a total of eight specie
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s (Montipora nodosa, Montipora sp. OKINAWATOGE, M. peltiformis, M. sinensis, M. stalagmites, M. turgescens, M. venosa and Montipora sp.) were recorded. Of these species, M. stalagmites was recorded for the first time in the 135 years since it was originally described. The species richness of the Montipora of Minami-Daito Island is very low when compared to other islands of the Ryukyu Archipelago. This is presumably because of the severe habitat environment of this oceanic island which has a steeply sloping bathymetry, little reef development, and extremely high wave energy.
2022年6月に南大東島でコモンサンゴ類相の調査が行われ, 合計8種(イワトゲコモンサンゴMontipora nodosa, オキナワトゲコモンサンゴMontipora sp. OKINAWATOGE, ムラサキコモンサンゴM. peltiformis, ナンサコモンサンゴM. sinensis, ダイトウコモンサンゴ (新称) M. stalagmites, ホンアバタコモンサンゴM. turgescens, フカアナコモンサンゴM. venosaならびにコモンサンゴ類の一種Montipora sp.)が記録された. これらの種のうち, ダイトウコモンサンゴは, タヒチからの原記載以来135年ぶりに記録された. 南大東島のコモンサンゴ類の種の豊富さは, 他の琉球列島の島々と比較して非常に低い. これは, この海洋島が急傾斜でサンゴ礁が発達せず, 波当たりが非常に強いという厳しい生息環境のためであると推察された. 続きを見る |