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종의 포플라수종에서 리그닌생합성에 관계된 OMT유전자의 발현
박용구,박희성,최장원,설일환,정일경,신동일,Park, Young-Goo,Park, Hee Sung,Choi, Jang Won,Sul, Ill Whan,Chung, Il Kyung,Shin, Dong Ill 한국생명과학회 1998 생명과학회지 Vol.8 No.4
We analyzed lignin content and wxpression of OMT gene during growth season in two hybrid poplar species. OMT gene expression was observed mainy in the developing secondary xylem where major quantity of lignin occurs. Lignin content in the xylem tissue increased as plant resumed growth in the spring and reached the highest in the late August. Change in lignin content was concurrent with that of OMT gene expression, indicating OMT is a key enzyme in lignin biosynthesis. 리그닌함량이 감소한 펄프소재의 육성을 위해 OMT유전자와 리그닌생합성 간의 관계를 2종의 포플라 수종을 이용하여 실험하였다. OMT유전자의 발현은 리그닌생합성이 가장 많이 일어나는 developing secondary xylem에서 높앗다. 이 사부조직에서의 리그닌함량의 증가는 봄에 성장을 개시할 때부터 증가하기 시작하여 8월 말 경에 가장 높았다. 이러한 리그닌의 증가는 OMT유전자의 발현 증가와 일치하였으며, 이는 OMT유전자가 리그닌생합성에서 매우 중요한 역할을 함을 나타내는 것이다.
Sang Ik Han(韓尙益),Hyun Tae Kim(金賢泰),Yil Chan Kwon(權一瓚),Chang Kie Park(朴昶璂),Yong Ho Kwack(郭龍鎬),Ill Kyung Chung(鄭鎰炅) 한국육종학회 1997 한국육종학회지 Vol.29 No.1
This study was conducted to determine the pattern of self-incompatibility through self-and cross-pollination in two varieties of herbaceous peony (Paeonia lactiflora Pallas). After self-pollination with the pollens of same variety, pollen tubes have germinated and grown into style tissue. However, the pollen tubes have arrested the growth in the mid of growing stage. This pattern was a different from that of sporophytic self-incompatibility. In the case of sporophytic self-incompatibility, self-pollinated pollens are not germinated on the style in normal, but if the pollens do, they do not penetrate into style tissue. From these phenomena, the pattern of self-incompatibility in herbaceous peony is assumed gametophytic self-incompatibility. For more precise research, protein analysis using SDS-PAGE and RNase activity stain gel electrophoresis was conducted. In SDS-PAGE analysis, two major proteins (21.5 and 28-kDa) was detected, and ribonuclease activity was tested in activity stain gel. Ribonucleatic activity is a unique characteristic of stylar proteins of gametophytic self-incompatibility plants reported previously. From these results, we concluded that P. lactiflora has a gametophytic self-incompatibility.
Seasonal Expression of OMT Gene in Relation to Lignin Biosynthesis in two Popular Species
박영구,박희성,최장원,설일환,정일경,김정화,신동일 한국생명과학회 1998 한국생명과학회 학술발표회 Vol.20 No.-
We analyzed lignin content and expression of OMT gene during growth season in two hybrid poplar species. OMT gene expression was observed mainy in the developing secondary xylem where major quantity of lignin occurs. Lignin content in the xylem tissue increased as plant resumed growth in the spring and reached the highest in the late August. Change in lignin content was concurrent with that of OMT gene expression, indicating OMT is a key enzyme in lignin biosynthesis.