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Populus nigra×P. maximowiczii F<sub>1</sub>의 삽수직경(揷穗直徑)이 활착(活着)과 수고생장(樹高生長)에 미치는 영향(影響)
노의래,안진권,김영모,이상붕,Noh, Eui Rae,Ahn, Jin Kwon,Kim, Young Mo,Lee, Sang Boong 한국산림과학회 1983 한국산림과학회지 Vol.59 No.1
Populus nigra${\times}$P. maximowiczii의 적정삽수(適正揷穗) 굵기를 구명(究明)하기 위하여 삽수직경별(揷穗直徑別) Clone별(別) 활착률(活着率)과 수고생장(樹高生長)을 연구(硏究)한 결과(結果)는 다음과 같다. 활착률(活着率) 80% 이상(以上)을 기준(基準)할 때 삽수(揷穗)굵기는 최소(最小) 8mm 이상(以上)이어야 하며 수고생장(樹高生長)과의 관계(關係)는 삽목(揷木) 후(後) 2개월(個月)까지는 삽수직경(揷穗直徑)이 클수록 수고(樹高)도 커지나 이러한 효과(?果)는 2개월(個月) 이후(以後) 즉(?) 7월(月)부터 점차 감소(減少)되는 경향(傾向)을 보였다. 삽수(揷樹)의 굵기가 13mm 이상(以上)되면 그 이하(以下)의 삽수(揷穗)보다도 현격(懸隔)히 활착률(活着率)(92.7%)이 높아지며 수고생장(樹高生長)도 좋아지는 경향(傾向)을 보였다. 일일수고생장(日日樹高生長)은 8월중(月中)에 최고점(最高點)에 달(達)했으며 이후(以後) 점차 감소(減少)하면서 10월(月) 상순(上旬)에는 거의 정지(停止)되는 것으로 추정(推定)된다. Survival and height growth affected by cutting diameter were studied to find out the optimum size of cuttings in Populus nigra${\times}$p. maximowiczii $F_1$ clones. The size of the cuttings should be at least 8mm, when 80 percent of survival rate is considered as a standard. The height growth was increased with increase of cutting diameter for two months after planting and, after two months, effect of cutting diameter on height growth was decreased since July. However, the survival rate and height growth of large cuttings (above 13mm) showed better than small cuttings (below 13mm), when the cutting sizes are divided into two groups. Height growth per day was reached at peak during August, and then it was gradually decreased. It was considered that the height growth terminated in early 10 days of October.
Inhibitory Effect of Populoside from the Bark of Populus nigra on Aldose Reductase
Lee, Yeon-Sil,Cui, Cheng-Bi,Kim, Jin-Kyu,Bae, Young-Soo,Lee, Jae-Yong,Kang, Il-Jun,Lim, Soon-Sung The Korean Society for Applied Biological Chemistr 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.6
Bark extract of Populus nigra was examined as a possible inhibitor of aldose reductase, a key enzyme involved in diabetic complications. The aqueous acetone extract of P. nigra was subjected to gel filtration chromatography to produce an active compound, populoside, which inhibited aldose reductase with 50% inhibitory value of $18.55\;{\mu}M$ in a non-competitive manner. Populoside also inhibited sorbitol accumulation by 48.84% at $50\;{\mu}M$. These results suggested that the P. nigra-derived component populoside has the potential to be used in the treatment of diabetic complications.
Inhibitory Effect of Populoside from the Bark of Populus nigra on Aldose Reductase
( Yeon Sil Lee ),( Soon Sung Lim ),( Il Jun Kang ),( Jin Kyu Kim ),( Cheng Bi Cui ),( Jae Yong Lee ),( Young Soo Bae ) 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.6
Bark extract of Populus nigra was examined as a possible inhibitor of aldose reductase, a key enzyme involved in diabetic complications. The aqueous acetone extract of P. nigra was subjected to gel filtration chromatography to produce an active compound, populoside, which inhibited aldose reductase with 50% inhibitory value of 18.55 μM in a non-competitive manner. Populoside also inhibited sorbitol accumulation by 48.84% at 50 μM. These results suggested that the P. nigraderived component populoside has the potential to be used in the treatment of diabetic complications.
Inhibitory Effect of Populoside from the Bark of Populus nigra on Aldose Reductase
Yeon Sil Lee,Cheng-Bi Cui,Jin Kyu Kim,배영수,Jae-Yong Lee,강일준,임순성 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.6
Bark extract of Populus nigra was examined as a possible inhibitor of aldose reductase, a key enzyme involved in diabetic complications. The aqueous acetone extract of P. nigra was subjected to gel filtration chromatography to produce an active compound, populoside, which inhibited aldose reductase with 50% inhibitory value of 18.55 μM in a non-competitive manner. Populoside also inhibited sorbitol accumulation by 48.84% at 50 μM. These results suggested that the P. nigraderived component populoside has the potential to be used in the treatment of diabetic complications.
Sun Yao,Li Yao,Sun Xin,Wu Qiong,Yang Chunhui,Wang Lei 한국식물학회 2022 Journal of Plant Biology Vol.65 No.5
Phosphatidylinositol-specific phospholipase C (PI-PLC) catalyzes the hydrolysis of phosphatidylinositol-4,5-bisphosphate into diacylglycerol and inositol 1,4,5-trisphosphate. It can play an essential role in plant stress response and signaling. However, the functions of PLCs remain unclear in wooden plants. This study carried out the bioinformatics analysis of the PLC gene family in poplar. The expression pattern analysis suggested the transient up-regulation of PsnPLC in salt stress conditions. The transgenic tobacco plants overexpressing PsnPLC were generated by the Agrobacterium-mediated leaf disc method. The transgenic lines showed a significant increase in plant height, SOD and POD activity, and proline content under salt stress. By contrast, transgenic lines showed a decreased malondialdehyde content under salt stress. Comparative transcriptome analysis indicated that the overexpression of PsnPLC mainly affects membrane-associated GO terms and signaling pathways, and the differential expression of salt-responsive genes may contribute to the enhanced salt tolerance. Overall, the results indicated that PsnPLC plays an essential role in modulating salt tolerance in transgenic tobacco.
Tingbo Jiang,Shengji Wang,Boru Zhou,Wenjing Yao 한국식물학회 2018 Journal of Plant Biology Vol.61 No.2
ERF transcription factor involves in many aspectsof plant development and response to both biotic and abioticenvironmental stimuli. In this study, we provided evidencethat PsnERF75 can improve the salt tolerance ability oftransgenic Arabidopsis. RT-qPCR analysis described thespatio-temporal expression patterns of PsnERF75 in differentpoplar tissues. Under salt stress condition, root and leaftissues were more sensitive than stem tissue. In addition,seed germination rates of PsnERF75 transgenic Arabidopsiswere significantly enhanced. Growth status of PsnERF75transgenic Arabidopsis seedlings was much better than thatof the controls. Physiological and histochemical assaysindicated PsnERF75 transgenic Arabidopsis have a greatercapacity to eliminate reactive oxygen species and lighten thedamages to plants than the controls. Using RNA-seq analysis,100 DEGs that were significant differentially expressedbetween PsnERF75 transgenic Arabidopsis and the controlsunder salt stress conditions were identified. Seventeen upregulatedand 10 down-regulated DEGs participate in plantsalt stress response process. In addition, subcellular localizationshowed that PsnERF75 is a nuclear-localized protein. All ofthe results will provide novel insights into the functions ofERF75 in plants under abiotic stress condition.