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Survey on major pest incidence of rice in 2017
Sung-Jun Hong,Kyong-Jae Lee,Ui-Seok Chae,Hyeong-Il Roh,Jun-yong Chung 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
전국 136개 시군에 있는 690개소 벼 관찰포에서 12종의 주요 해충을 6월 1일부터 9월 13일까지 15일 간격으로 총 8회 조사한 결과를 국가농작물병해충관리시스템(NCPMS)을 통하여 수집하였다. 2017년도 벼 주요해충 12종의 총 발생 추정면적은 158,942ha로 재배면적 대비 21.1%에 발생되었다. 발생면적이 가장 많았던 해충은 애멸구로 43,875ha(재배면적 대비 5.8%)이였고, 그 다음으로는 혹명나방 34,112ha(재배면적 대비 4.5%), 벼물바구미 22,802ha(재 배면적 대비 3.0%), 먹노린재 21,118ha(재배면적 대비 2.8%)순 이었다. 평년보다 발생면적이 많았던 해충은 애멸구, 멸강나방, 먹노린재로 애멸구는 평년보다 113%수준, 멸강나방은 평년대비 136% 수준, 먹노린재는 269% 수준이었다. 먹노린재의 발생이 점차 증가하고 있는 것을 확인할 수 있었다. 결론적으로 2017년 벼 주요해충의 발생정도는 전년 대비 96% 수준으로 유사하였지만, 평년대비는 56% 수준으로 발생이 낮은 경향임을 확인하였다.
Hong, Heeji,Kim, So-Jeong,Min, Ui-Gi,Lee, Yong-Jae,Kim, Song-Gun,Roh, Seong Woon,Kim, Jong-Geol,Na, Jeong-Geol,Rhee, Sung-Keun International Union of Microbiological Societies 2015 International journal of systematic and evolutiona Vol.65 No.5
<P>A strictly anaerobic, mesophilic, iron-reducing bacterial strain, IRF19<SUP>T</SUP>, was isolated from coal-contaminated soil in the Republic of Korea. IRF19<SUP>T</SUP> cells were straight, rod-shaped, Gram-staining-negative and motile by means of flagella. The optimum pH and temperature for their growth were determined to be pH 7.5–8.0 and 40 °C, while the optimum range was pH 6.5–10.0 and 20–45 °C, respectively. Strain IRF19<SUP>T</SUP> did not require NaCl for growth but it tolerated up to 2 % (w/v). Growth was observed with yeast extract, <SMALL>d</SMALL>-glucose, <SMALL>d</SMALL>-fructose, <SMALL>d</SMALL>-ribose, <SMALL>d</SMALL>-mannitol, <SMALL>d</SMALL>-mannose, <SMALL>l</SMALL>-serine, <SMALL>l</SMALL>-alanine and <SMALL>l</SMALL>-isoleucine. Fe(III), elemental sulfur, thiosulfate and sulfate were used as electron acceptors. Phylogenetic analysis based on the 16S rRNA gene sequences indicated that strain IRF19<SUP>T</SUP> is affiliated to the family <I>Clostridiaceae</I> and is most closely related to <I>Salimesophilobacter vulgaris</I> Zn2<SUP>T</SUP> (93.5 % similarity), <I>Geosporobacter subterraneus</I> VNs68<SUP>T</SUP> (93.2 %) and <I>Thermotalea metallivorans</I> B2-1<SUP>T</SUP> (92.3 %). The major cellular fatty acids of strain IRF19<SUP>T</SUP> were C<SUB>14 : 0</SUB>, iso-C<SUB>15 : 0</SUB> and C<SUB>16 : 0</SUB>, and the profile was distinct from those of the closely related species. The major respiratory quinone of strain IRF19<SUP>T</SUP> was menaquinone MK-5 (V-H<SUB>2</SUB>). The main polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, an unknown phospholipid and two unknown polar lipids. The G+C content of the genomic DNA of strain IRF19<SUP>T</SUP> was determined to be 37.4 mol%. On the basis of phenotypic, chemotaxonomic and phylogenetic results, strain IRF19<SUP>T</SUP> is considered to represent a novel species of a novel genus of the family <I>Clostridiaceae</I> , for which we propose the name <I>Anaerosolibacter carboniphilus</I> gen. nov., sp. nov., with the type strain IRF19<SUP>T</SUP> ( = KCTC 15396<SUP>T</SUP> = JCM 19988<SUP>T</SUP>).</P>