• The Plant Pathology Journal
• /
• 제18권3호
• /
• pp.121-125
• /
• 2002

This study was conducted to determine the causal virus that naturally infected hollyhock (Althaea rosea) plant showing mild mosaic symptom in 1999. Flexuous virus particles were found in the cytoplasm of plant tissue from infected hollyhock under transmissible electron microscopy. A virus from the genus Potyvirus under the family Potyviridae was isolated and was maintained on Chenopodium quinoa for three passages. Chlorotic local legions were used to inoculate 20 species of indicator plants. The virus infected all the tested cucurbit plants, but failed to infect Nicotiana benthamiana. Based on the host range test and RT-PCR analysis, the potyvirus was identified as a strain of Zucchini yellow mosaic virus-A (ZYMV-A), one of the major pathogens of cucurbits. Infectivity analysis showed that ZYMV-A induced faster systemic symptom than ZYMV-Cu on squash and other cucurbit plants, suggesting that ZYMV-A was a more severe strain. To better characterize ZYMV-A, Western blot assay was carried rout to the coat protein (CP) of the virus using ZYMV-specific antiserum with ZYMV-Cu and other potyviruses. The CP of the virus reacted strongly with the antiserum against ZYMV, and other tested antisera did not react with the CP of ZYMV-A. Results strongly suggest that the potyvirus infecting hollyhock was a novel strain of ZYMV. This is the first report on ZYMV as the causal virus infecting hollyhock in Korea.

• Bulletin of the Korean Chemical Society
• /
• 제33권9호
• /
• pp.3043-3047
• /
• 2012

To investigate the scattering layer effect of a $TiO_2$ multilayer in dye-sensitized solar cells (DSSCs), we designed a new DSSC system, assembled with a CdS-$TiO_2$ scattering layer electrode. A high-magnification SEM image exhibited hollyhock-like particles with a width of 1.5-2.0 ${\mu}m$ that were aggregated into 10-nm clumps in a hexagonal petal shape. The efficiency was higher in the DSSC assembled with a CdS-$TiO_2$ scattering layer than in the DSSC assembled with $TiO_2$-only layers, due to the decreased resistance in electrochemical impedance spectroscopy (EIS). The short-circuit current density ($J_{sc}$) was increased by approximately 7.26% and the open-circuit voltage ($V_{oc}$) by 2.44% over the 1.0 wt % CdS-$TiO_2$ composite scattering layer and the incident photon-to-current conversion efficiency (IPCE) in the maximum peak was also enhanced by about 5.0%, compared to the DSSC assembled without the CdS-$TiO_2$scattering layer.

• The Plant Pathology Journal
• /
• 제23권4호
• /
• pp.245-250
• /
• 2007

The complete genome sequence of Zucchini yellow mosaic virus stain A (ZYMV-A) isolated from a hollyhock (Althaea rosea) was determined by using RT-PCR with a series of primer sets. The virus genome consisted of 9593 nucleotides (nt), excluding the poly(A) tract at 3' terminus of the virus genome, with 5' and 3' untranslated region of 139 and 211 nt, respectively. The deduced polyprotein of ZYMV-A consisted of 3080 amino acid (aa) residues and was 351 kDa in molecular weight. All proteolytic cleavage sites of the polyprotein of ZYMV-A were compared with those of ZYMV strains, which showed the cleavage sites were conserved among ZYMV strains. The HC-Pro contained the KITC and PTK motifs, and the DAG motif was located at CP ORF of ZYMV-A, suggesting that ZYMV-A is aphid-transmissible. Phylogenetic tree analysis based on the complete genome among ZYMV strains or CP ORFs with other potyviruses showed ZYMV strains formed a distinct group. These results clearly confirmed that ZYMV-A was another distinct strain in ZYMV population at molecular level.

• 사상체질의학회지
• /
• 제11권1호
• /
• pp.221-240
• /
• 1999

1. 연구 목적 사상의학(四象醫學)에 있어서 식이요법은 체질진단, 약물치료와 아울러 정신과 육체의 균형 및 조화라는 입장에서 매우 중요하다. 하지만 학자들간의 체질음식에 대한 리견(異見)으로 인하여 혼란이 있어왔다. 따라서 중요한 식품에 대한 역사적 유래, 특성, 효능에 대한 문헌고찰을 통하여 사상체질 식이요법의 이론적 배경을 제시할 필요성이 제기된다. 백채지주(百菜之主)라 할 수 있는 아욱(葵菜)은 다른 나라와 달리 우리 나라에서만 국이나 찌개에 넣어 식용(食用)되고 있다. 이러한 아욱은 접시꽃(蜀葵), 닥풀(黃蜀葵), 해바라기(向日葵)와 같이 공통적으로 이름에 규(葵)가 들어가고 성질이 비슷하기 때문에 같이 고찰하였다. 특히 해바라기에 대한 문헌정리가 없는 학계에 해바라기 도입연대를 추정하고 규(葵)를 해바라기로 오역함에 따른 폐단을 정정하는 근거를 제시하고자 한다. 2. 연구 방법 본초서(本草書) 뿐만 아니라 농서(農書), 유서(類書), 개인문집 등을 비교 분석하였다. 3. 연구 결과 (1) 규채(葵菜)는 '아부실(阿夫實) ${\rightarrow}$ 아욱(阿郁) ${\rightarrow}$ 아옥(아혹) ${\rightarrow}$ 아욱'의 표기변천을 거치며, 동규(冬葵)를 돌아욱이라하는 까닭은 해를 넘기는(돌) 아욱이라는 뜻이다. (2) 아욱의 향일성(向日性)은 충(忠)과 지(智)를 상징하는 의미로 사용되었으며, 촉규(蜀葵) 황촉규(黃蜀葵) 향일규(向日葵)의 향일성(向日性)과 맞물려 확대 해석하기에 이르렀다. (3) 黃蜀葵(닥풀)를 一日花(일일화)로 보았으나 해바라기가 도입된 이후 황촉규(黃蜀葵)와 해바라기를 혼동하여 닥풀을 해바라기(向日花)로 잘못 인식하기도 하였다. (4) 현존하는 문헌 중 해바라기에 대한 최초기록은 "청장관전서(靑莊館全書)"(1795)이며 1700년대 초기에서 중기사이에 도입되었을 것으로 추정된다. (5) 일부 사전류의 잘못된 기록으로 인하여 규(葵)에 대한 해석의 혼란을 가져왔으나 이는 바로 잡아져야만 한다.

• 한국의사학회지
• /
• 제14권1호
• /
• pp.31-47
• /
• 2001

According to the customary, naming is done after the subject is in existence. But the name "Haebaragi"(Hyangilgyu, Hyangilhwa) has been used as an alias of Hibiscus manihot L, long before Helianthus annuus L was brought in to Korea, and now the usage of the name has been conversed since then. Since the incorrect record of Gyugwak and Gyuhwa as Haebaragi in "Chosunesajun"(Dictionary of Chosun language) published under Chosunchongdokbu in 1920, the mistake has been carried on and this must be corrected from now on. Incorrect record of hollyhock(Chokgyuwha) as Haebaragi in "Mong-u" (1810) took a role in this incorrect trend.

• 한국한의학연구원논문집
• /
• 제7권1호
• /
• pp.55-66
• /
• 2001

According to the customary, naming is done after the subject is in existence. But the name's Hae-ba-ra-gi(해바라기), 향일규(向日葵), 향일화(向日花))' has been used as an alias of Hibiscus manihot L.(닥풀) long before Helianthus annuus L.(sunflower) was brought in to Korea. And now the usage of the name has been conversed since them. Since the incorrect record of '葵藿' and '葵花'as '해바라기' in ${\ulcorner}$조선어사전(朝鮮語辭典)${\lrcorner}$(1920), the mistake has been carried on this must be corrected from now on. Incorrect record of hollyhock(蜀葵花) '해바라기' in ${\ulcorner}$몽유(蒙喩))${\lrcorner}$(1810) took a role in this incorrect trend.

• The Plant Pathology Journal
• /
• 제19권4호
• /
• pp.217-220
• /
• 2003

Zucchini squash (Cucurbita pepo cv. Black Beauty) plants infected with A strain of Zucchini yellow mosaic virus (ZYMV-A) isolated from a hollyhock plant showed systemically severe mosaic symptom, similar to previously established Cu strain of ZYMV. However, initial symptom of squash infected by ZYMV-A strain was generally more severe than those infected by ZYMV-Cu. Using leaf-detachment assay, examination of kinetics of accumulation of the coat protein (CP) in systemic loaves of squash plants showed that CPs of ZYMV-A appeared earlier than those of ZYMV-Cu. However, both ZYMV-A and ZYMV-Cu showed similar kinetics of CP accumulation 7 days post-inoculation. These results indicate that different rates and initial severity of systemic symptom development were due to differences in the rate of movement rather than vims replication.

• 한국의류학회지
• /
• 제38권2호
• /
• pp.201-215
• /
• 2014

This study explores the kinds and types of dyes used in the Joseon Dynasty. Some literature including "Sanga Yorok", "Gyuhap Chongseo", "Imwon Gyeonjeji" were reviewed for this purpose. The findings are as follows. The colors obtained from the dyes were divided into seven color series, such as red, yellow and orange, green, blue, purple, brown, gray and black. These are practical color categories differed from abstract five cardinal colors [五方色]. The diachronic dyes used during the Joseon Dynasty were safflower and Japanese alder bark for red, indigo leaves for blue, gromwell for purple, chestnut tree bark for brown. The representative dyes used in the late Joseon Dynasty were safflower and sappan wood for red, wild pear tree bark and Pentapetes phoenicea for yellow and orange, indigo leaves for blue, sappan wood and gromwell for purple, mulberry tree for brown, and Chinese ink for gray. Common dyes used both in Joseon and China were safflower and sappan wood for red, pagoda tree blossom for yellow, a combination of pagoda tree blossom (or Amur cork tree) and indigo leaves (or sediment) for green, indigo leavers or sediment for blue, sappan wood and hollyhock for purple, and a combination of indigo leaves and Galla Rhois for gray and black.

• 한국작물학회지
• /
• 제58권4호
• /
• pp.432-438
• /
• 2013

This study was conducted to compare seed viability among 42 species after ten years of storage in the midterm storage complex ($4^{\circ}C$, 30-40% RH) at the National Agrobiodiversity Center (NAC) Korean genebank maintained by the Rural Development Administration (RDA), Republic of Korea and to suggest the relative seed longevity and suitable monitoring intervals. The germination data from initial tests and after ten years of storage were compared to measure changes in viability during storage. The decline in seed viability varied greatly among seeds from -11.5% for Triticum sp. to 80% for melon. Coriander, crowndaisy, safflower, cosmos, Chinesebellflower, waxgourd, melon, castorbean, Welch-onion, hollyhock, wild barley, and tallfescue showed significant decreases in viability of 34.2%, 73.4%, 36.5%, 30.0%, 40.2%, 71.3%, 80.0%, 65.9%, 45.5%, 51.4%, 53.0%, and 33.5%, respectively. Gardenpea, soybean, perilla, onion, wild rice, Italian-ryegrass, and pepper showed a 15-30% decline in viability, while the viability of morningglory, adzukibean, maize, and Capsicum sp. decreased by 15% to 5%. Chicory, radish, Chinese-cabbage, bottlegourd, watermelon, cucumber, pumpkin, Cucurbita sp., groundnut, kidneybean, clubwheat, sesame, wheat, Triticum sp., rice, barley, orchardgrass, buckwheat, and wild tomato showed changes in viability of <5%. The changes in storage viability also varied within families. The wild types of rice and barley showed rapid viability loss and presented different aspects from cultivars. Since seed viability of species, classified as index 1 or 2, showed germination losses >15% after ten years of storage, a viability test should be conducted with five year intervals, while species with germination loss of <15% (in index 3 or 4) can be retested at ten year intervals.