• Journal of Plant Biotechnology
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• 제30권2호
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• pp.161-165
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• 2003

The effect of NAA and Benzyladenine(BA) for determination times on the formation of adventitious shoots, roots trichmoes and calli in MS basal medium was investigated in leaf segments from ecotype 'Nosses' of Arabidopsis thalliana. Adventitious shoots, roots, trichomes and calli were formed fromed from leaf segments in a wede range of NAA and BA. The optimal combination of hormones for adventitious shoots formation, 20mg/L NAA for trichome formation, 100mg/L for callus formation. Inductive times for formation of adventitious shoots, roots, trichomes and calli were determined at 14, 4, 6 and 18 days respectively by periodical transfer of leaf segments from hormines containing media to hormone free medium.

• Journal of Plant Biotechnology
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• 제4권1호
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• pp.33-37
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• 2002

Micropropagation and adventitious root production via the culture of Polygonatum odoratum were performed. Stem segments of seedlings of Polygonatum odoratum were the most efficient explants for adventitious shoot formation compared to leaf and root segments. Exogenous cytokinin treatment was required for adventitious shoot formation. Among the cytokinin (BA, Kinetin and Zeatin) tested, BA was most effective for shoot formation from stem segments. Auxin (NAA or IBA) in combination with cytokinin significantly enhanced adventitious shoot formation. Twenty five percent of explants produced adventitious shoots on medium with 2.0 mg/L BAP alone, while 83% of explants produced adventitious shoots on medium with the combination of 2.0 mg/L BAP and 0.1 mg/L IBA. Rooting of adventitious shoots was achieved after transferring to 112 MS medium supplemented with 0.1 mg/L IBA and 0.5 mg/L zeatin. When stem segments were cultured on MS medium with various kinds of auxin (IBA, NAA and 2,4-D), adventitious roots were formed from callus. frequency of adventitious root formation was highest in 2,4-D than NAA and IBA. When roots were in clusters together with parental stem segments, growth of roots actively occurred in hormone-free MS liquid medium. The above results represent that possible application for the mass production of roots and plantlets through in vitro culture system of Polygonatum odoratum.

• Journal of Plant Biotechnology
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• 제5권4호
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• pp.245-250
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• 2003

An efficient procedure was developed for adventitious shoot bud induction and plantlet regeneration from various explants of the ten genotypes of Pepper (Capsicum annuum L.) using Thidiazuron (TDZ). Among various treatments at 1.0-3.0 mg/L TDZ Induced maximum number of adventitious shoots depending upon the explant type and genotype compared to other treatments. Among the explants tested, leaf induced maximum number of adventitious shoots than the cotyledons. TDZ-mediated organo-genesis was possible in 10 pepper cultivars, the extent of the response being genotype-dependent. Of the ten genotypes tested, C. annuum cvs CA960, $G_4$ and X-235 were produced maximum number of adventitious shoots and Sell was the least, and all other genotypes gave moderate response. Elongation of multiple shoots was observed on medium supplemented with SA (0.05 mg/L) in combination of IAA (0.05 mg/L). Differences in ability for in vitro shoot regeneration and elongation depend upon the variety and explant type. The elongated shoots were success. Fully rooted on MS medium containing at 1.0 mG/L IAA. Plantlets regenerated from different explants of ten genotypes were found to be diploid (2n=24) and were devoid of any chromosomal aberrations. Regenerated plants were successfully established in soil where 85-90% of them developed into morphologically normal and fertile plants.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.58-58
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• 2020

Xanthoceras sorbifolium Bunge (yellowhorn) is a woody tree in the soapberry family, Sapindaceae, native to northern China. This species has been identified as a major woody bioenergy plant for bio-diesel production because of high oil content in seed. But the flowers do not bear fruit well while the many flowers blooming. This study was performed to regenerate in vitro plantlet using adventitious shoot formation. To establish the protocol of plant regeneration, adventitious shoots formation rate in the culture of cotyledon of immature zygotic embryos was 68.6% in 1/2 MS medium with 0.5 mg l-1 BA and 3% sucrose (w/v). In the culture of cotyledons of mature zygotic embryos, induction of adventitious shoots was needed to contain high sucrose in pre-culture medium and the frequency of shoot induction was 64.4%. Multiple shoots were induced in 0.5 mg l-1 TDZ, and rooting of shoot was induced 4.0 mg l-1 IBA. Flow cytometry analysis revealed that all the regenerated plantlets were diploid.

• 한국자원식물학회지
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• 제11권
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• pp.40-47
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• 1998

When the leaves, roots and stem segments of seedling of Polygonatum odoratum were cultured on Murashige and Skoog medium with 2.0mg/l BAP, stem segments were the most efficient explants for adventitious shoot inductino. To observe the efficient combination of growth regulators on the adventitious shoot formation , stem segments were cultured on MS medium with various kinds of cytokinins (BAP, kinetin, zeatin). From this experiment, cytokinin treatement was prerequisite for theadventitious shoot formatino,especially BAP was the most effective. Auxin (NAA or IBA) in combination with cyotokinin highly enhanced the adventitious shoot formation. Twenty five percents of explants produced the adventitious shoots on medium with 2.0mg/l BAP solely, while 83% of explants produced the adventitious shoots on medium with 2.0mg/l BAP and 0.1mg/l IBA. Root formationform adventitious shoot was promoted after transfer to 1/2 MS medium supplemented with 0.1mg/l IBA and 0.5mg/l zeatin, thereafter the plantlets with shoots and roots were cultured on 1/2MS medium lacking growth regulators. When the stem segments were cultured to MS medium with 1.0mg/l 2,4 NAA and IBA , yellow and nodulous cali were formed from the stem segments which were developed into adventitious roots. These roots were actively grew after transferred to MS liquid medium lacking growth regulators.

• 식물조직배양학회지
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• 제24권6호
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• pp.329-334
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• 1997

미류나무의 잎절편들을 fructose를 첨가한 WPM에서 배양하였으나, TDZ와 BA 그리고 NAA의 여러 농도와의 조합에서 다른 형태의 기관들(뿌리나 줄기)이 관찰되었으며, 체세포 배와 유사한 기관들의 형태도 관찰되었다. 3계통 미류나무들의 잎절편들을 사이토카이닌(BA 또는 TDZ)와 오옥신(NAA)를 첨가한 WPM 배지에서 접종시켜, 재분화를 유도한 결과, BA (05 mg/L)나 TDZ (0.01 mg/L)와 NAA (0.05 mg/L 또는 0.1 mg/L)의 조합에서 재분화 율은 각각 63%에서 100%이고, 재분화 개체 수는 잎절편당 평균 2.5부터 20개, 그리고 부정줄기 형성체군(organogenic site) 들은 평균 1.8에서 4.5개로 높게 나타났다. 또한 세 계통의 미류나무들은 각기 유사한 처리 조합에서 높은 재분화율을 나타내었다.

• 식물조직배양학회지
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• 제26권3호
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• pp.211-217
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• 1999

애기장대 (Arabidopsis thaliana) 생태종 'Columbia' 잎절편에서의 묘조, 부정근, 모용 및 캘러스 형성에 미치는 auxin과 cytokinin의 효과를 조사하였다. 광범위한 식물생장 조절물질 농도와 조합에서 묘조, 부정근, 모용 및 캘러스가 형성되었다. 묘조는 0.1mg/L IAA와 10mg/L BA에서 형성되었고, 부정근은 저농도의 IAA와 NAA에서 모두 형성되었다. 모용과 캘러스는 IAA와 NAA의 농도 증가에 따라 형성되었으나 모용은 0.5mg/L NAA와 0.1mg/L BA 혼합처리구에서 가장 많이 형성되었으며, 캘러스는 10mg/L NAA와 10mg/L BA혼합처리구에서 가장 많이 형성되었다. NAA의 단독 영향을 조사한 결과 부정근 형성은 0.1mg/L 모용은 2.0mg/L 캘러스는 10mg/L가 가장 효과적이었으며, NAA배지에 각각 일정 기간 잎 절편을 치상하였다가 NAA 무처리 배지에 옮긴 결과 부정근, 모용 및 캘러스을 형성하는 determination time은 각각 6, 7, 18일이었다.

• 한국자원식물학회지
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• 제35권4호
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• pp.502-507
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• 2022

본 연구는 약용식물자원인 땅꽈리 유식물의 하배축 절편으로부터 부정아 형성을 통한 재분화를 조사하여 효율적인 재분화 조건을 확립하고자 하였다. 신초는 저농도 BAP를 함유하는 MS 배지에서 효과적으로 유도되었다. 신초 유도는 BAP 0.5~1.0 mg/L를 단독으로 또는 NAA 0.1~0.5 mg/L와 함께 처리한 MS 배지에서 활발히 이루어졌으며, 특히 BAP 1.0 mg/L가 포함된 MS 배지가 가장 효과적이어서 다발성 신초가 왕성하게 형성되었다. 유도된 신초를 뿌리 유도 배지로 옮겼을 때, 저농도의 NAA, IBA, IAA에서 뿌리가 잘형성되어 재분화 식물체를 만들어 내기에 적절하였다. 발근 수와 뿌리의 길이는 각각평균 2.0개, 8.0 cm 이상으로 높게 나타났다. 특히, 0.03 mg/L의 NAA, IBA, IAA를 포함한 MS 배지에서 뿌리가 더잘 성장하고, 뿌리의 전체적인 형태도 양호하였다. 그리고, 저농도의 NAA, IBA, IAA를 함유하는 MS 배지에서 새로운 신초의 형성도 잘 이루어져서, 줄기의 수가 2개 이상으로 많이, 그리고 길이는 6.0 cm 이상으로 길게 신장하였다. 배양토에 이식한 재분화 식물체는 100%의 생존율을 보였으며, 모두 정상적인 성체로 생장하였다. 따라서 땅꽈리의 부정아 형성을 이용한 재분화 식물체의 생산은 개체들을 대량 증식할 수 있어 균질한 조원료를 안정적으로 공급하는데 주요 수단이 될 것으로 보인다.

• Journal of Plant Biotechnology
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• 제30권1호
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• pp.73-80
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• 2003

패랭이꽃속의 분포와 개발을 위한 기초자료로 강원도에서 자생 2종과 수집가능한 7 외래종에 대한 기내배양체의 특성을 조사하였다. 캘러스의 유도를 위해 조직부위별 다양한 절편체들을 2,4-D. NAA, BA가 농도별로 처리된 MS 배지에 치상한 후, 27$^{\circ}C$ 광조건과 2.0mg/L 2,4-D와 0.5 mg/L BA의 조합배지에서 배양했을 때 3주 후 절단면에서 callus가 형성되기 시작하였으며, 패랭이꽃 (Dianthus chinensis)의 잎절편체에서 가장 양호하였다. Organogenic 캘러스의 선발은 기내에서 증식된 adventitious shoot의 절편체 유래 캘러스로부터 가능했으며 이들 캘러스를 1.0 mg/L BA와 0.1 mg/L NAA가 조합된 배지에 치상하였을 때 약 30% 정도의 shoot 형성률을 보였고 multiple shoot의 분화를 관찰할 수 있었다. In vitro에서 증식된 adventitious shoot 절편체를 1.0 mg/L BA와 0.1 mg/L NAA가 포함된 N6 배지에 치상했을 때, 캘러스 단계를 거치지 않고 직접 shoot이 형성되었고 D. gratianopol 유래 adventitious shoot 절편체는 52%의 높은 shoot 형성률을 보였다. 이들 multiple shoot로부터 재분화된 소식물체는 0.1 mg/L NAA가 포함된 MS 배지에서 뿌리가 유도되고 vermiculite가 담긴 pot에 이식 후 85% 습도하에서 활착되어 정상적인 개화된 개체를 획득할 수 있었다. 0.03 M EMS 처리된 패랭이꽃의 adventitious, shoot 절편체 유래 캘러스로부터 힌꽃의 패랭이꽃의 도연변체식물 (M23)이 분화되었으며 종자 형성이 가능하였다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.73-73
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• 2020

Toona sinensis (TS) leaf is known to antinociceptive, antioxidative stress and skin moisturizing effects. Acnes vulgaris is a chronic skin disease with various symptoms including itchiness, pain and interruption of normal skin function. Propionibacterium acnes (P. acnes) is a major factor in the occurrence of inflammatory acnes. This study evaluated the antioxidant and anti-inflammation effects by TS extract from adventitious shoots. TS extract showed anti-inflammatory activities by suppression of pro-inflammation mediators (iNOS and COX-2) in LPS-stimulated RAW264.7 cells. TS extract also has anti-inflammatory activities by inhibiting the secretion of pro-inflammatory cytokines on P. acnes-stimulated HaCaT cells. These effects were regulated by MAPK signaling pathway. Therefore, we suggest that TS extract from adventitious shoots might have applications as a medicine for treating P. acnes-induced skin diseases.