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생물학 및 비생물학적 스트레스 반응에서의 NPR1 기능 고찰
정미선,김세원,윤대진,Cheong, Mi Sun,Kim, Sewon,Yun, Dae-Jin 한국식물생명공학회 2016 식물생명공학회지 Vol.43 No.3
Plants can recognize and respond in various ways to diverse environmental stresses, including pathogenic microorganisms, salt, drought, and low temperature. Salicylic acid (SA) is one phytohormone that plays important roles in the regulation of plant growth and development. Nonexpressor of pathogenesis-related genes 1 (NPR1) was originally identified as a core protein that could function as a transcriptional co-regulator and SA receptor during systemic acquired resistance (SAR), a plant immune response that could activate PR genes after pre-exposure of a pathogen. Although the function of NPR1 in plant defense response and the role of SA hormone in the regulation of plant physiological processes have been well characterized, the biological role of NPR1 in plant abiotic stress responses is largely unknown. In this review, we will summarize and discuss the current understanding of NPR1 function in response to plant environmental stresses.
1-Aryl ethanolamine유도체로부터 식물 유근생장 억제제 발굴
이득영(Deuk-Yeong Lee),정미선(Mi-Sun Cheong),배지연(Ji-Yeon Bae),김진효(Jin-Hyo Kim) 한국농약과학회 2019 농약과학회지 Vol.23 No.2
Pectin methylesterase (PME) regulation has been highlighted a new mode-of-action for plant growth, and the inhibitor screening was an issue to develop a new class plant growth regulators (PGR). Recently phenylephrine had been reported their PME inhibition and PGR activity. In here, aryl ethanamines can be divided into 1-aryl-1-ethanolamine (Group I) and 2-aryl ethanamine (Group II), and the chemicals were tested PME inhibition assay. Among them, epinephrine and fenoterol showed potent PME inhibition activity and the K<SUB>i</SUB>s were 51.0 and 55.1 μM, respectively. In comparison with Group I and II, the chemicals from Group I based on 1-aryl-1-ethanolamine showed more potent PME inhibition activity than Group II. In addition, meta-hydroxylated 1-aryl-1-ethanolamines like epinephrine, fenoterol, and phenylephrine showed strong PME inhibition with the root growth inhibition in Brassica campestris (IC<SUB>50</SUB> 216 - 354 μM).
부산석고 시용에 의한 밭 토양 특성과 마늘의 수량 및 품질에 미치는 영향
김영남,조주영,윤영은,최현지,정미선,이미나,김권래,이용복,Kim, Young-Nam,Cho, Ju Young,Yoon, Young-Eun,Choe, Hyoen Ji,Cheong, Mi Sun,Lee, Mina,Kim, Kwon-Rae,Lee, Yong Bok 한국환경농학회 2021 한국환경농학회지 Vol.40 No.1
BACKGROUND: Globally, large amounts of phosphogypsum (PG), which is a by-product of the phosphate fertilizer production, is deposited in open areas. As PG contains calcium, phosphate, and sulphate, it can be used as a soil amendment in farmlands. This study was conducted to investigate the effects of PG application on properties of field soil and yield and quality of garlic (Allium sativum L.), and to seek appropriate level of PG application into the field. METHODS AND RESULTS: This experiment was conducted by applying PG at four different levels that were adjusted based on 65% calcium base saturation in the field soil: 0% (control), 50% (PG50, 100 kg/10a), 100% (PG100, 200 kg/10a), and 150% (PG150, 300 kg/10a). Following cultivation, soil electrical conductivity (EC), organic matter, available P and exchangeable Ca increased, whilst soil pH decreased. With increase in PG application level, soil EC and exchangeable Ca increased. PG application increased concentrations of water soluble Ca and SO4 across the soil profile, especially in PG150. The highest yield of garlic was found in PG100 treatment. The plant's uptake for N, P, Ca, and S increased by PG applications, but that for K decreased. Moreover, concentrations of S-related amino acids such as cysteine and methionine in garlic increased by PG applications. The increased content of nutrients and amino acids with PG supply might improve yield, quality, and favor of the crop. CONCLUSION: Overall, PG application at 200 kg/10a into a field had the best effect on improving soil fertility as well as yield and quality of garlic. Further studies are required to maximize efficiencies of PG supply in soil management and production of various crops.
Young-Eun Yoon(윤영은),Hyeon Ji Choe(최현지),Kantharaj Vimalraj(칸타라즈 비말라즈),Chohra Hadjer(쇼흐라 하젤),Mi Sun Cheong(정미선),Young-Nam Kim(김영남),Yong Bok Lee(이용복) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11
As a flavone glucoside, Saponarin is the primary functional compound found in barley sprouts (Hordeum vulgare L.). It appears that saponarin production occurs mainly in the primary barley leaf and varies considerably with environmental factors, i.e. climatic conditions. To obtain high yield of saponarin, it is essential to find the optimal environmental conditions for growing barley sprouts. In the present study, we conducted field experiments to investigate the effects of variation in climatic conditions with different sowing times on the saponarin content of barley sprouts. As a result, there was no effect of a difference in sowing time on the fresh weight (FW) of the sprouts, but their growth period (GP) indeed varied with the sowing time. In both sites, the higher saponarin concentration was found in the sprouts sown in spring (March to May) and autumn (September to October) than in summer (May to August). Also, according to the correlation analysis, saponarin concentration had positive correlations with daily temperature range (DTR) and average light period (ALP), negative correlations with FW, leaf length, growth index (GI), average daily temperature (ADT), accumulated temperature (ACT), relative humidity (RH), and rainfall. The results indicate that the daily temperature difference and daylight hours may be determinant factors on saponarin biosynthesis. In addition, the polynomial relationship between saponarin yield and leaf length showed that barley sprouts would produce the highest saponarin yield at an appropriate 16 cm length. The outcomes of this study suggest the optimum sowing seasons that have more significant climatic factors such as daily temperature difference and daylight hours, contributing to a high quality of barley sprouts with high saponarin content.