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NTIS 바로가기생명과학회지 = Journal of life science, v.21 no.6 = no.134, 2011년, pp.865 - 874
정유철 (성균관대학교 유전공학과) , 정영재 (신경대학교 생명공학과) , 김동균 (신라대학교 생물과학과)
The genus Bryophyllum is best known for many of its species having the ability to produce plantlets on their leaves. This phenomenon is also known as vegetative reproduction. Differential expressed gene (DEG) detecting technique was applied in order to survey the genes involved in the process of ase...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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대부분의 영양번식은 어떤 형식으로 번식이 되는 경우가 많은가? | 자연에서 일어나는 영양번식은 대부분 초본에서 일어나는 현상으로 유전적으로 동일한 식물을 얻기 위한 좋은 방법으로 원예품종개발에 많이 접목되어 활용되고 있다[15,30]. 대부분의 영양번식은 구조적으로 줄기나 뿌리가 변형되어 번식이 일어나는 경우가 많다. 뿌리줄기(rhizome)는 영양생식 기관 중 가장 대표적인 사례이다. | |
영양번식이란 무엇인가? | 영양번식은 무성생식의 한 종류로서 영양번식 혹은 영양증식이라고도 한다. 이 과정은 씨앗이나 포자의 생산 없이 새로운 독립적인 식물을 발생시키는 과정으로 자연환경에서 많은 식물 종에서 발견되고 보고되었다. 자연에서 일어나는 영양번식은 대부분 초본에서 일어나는 현상으로 유전적으로 동일한 식물을 얻기 위한 좋은 방법으로 원예품종개발에 많이 접목되어 활용되고 있다[15,30]. | |
Kalanchoe의 foliar budding은 종에 따라 두 가지 발생 형태를 따르는데, 각각 무엇인가? | Kalanchoe의 foliar budding은 생식의 단계 중 개체 발생의 한 부분으로, 종에 따라 두 가지 발생 형태를 따르게 된다. Monophasic type의 발생 형태에서 bud 분화과정은 primordia에서 소식물체로 발생하는 초기 단계로부터 지속적으로 발생이 진행되는 형태이며, biphasic type의 발생 형태에서 bud 분화과정은 첫 번째 단계로 생리적으로는 휴면 상태를 유지하지만 형태적으로는 완전한 외형을 갖춘 bud를 primordia에서 발생시키고 이후에 두 번째 단계로 잎의 분리에 의하여 완전 성숙이 일어나 소식 물체를 발생시킨다. 더불어 두 번째 유형에 속하는 Kalanchoe의 소식물체 발생은 epiphyllous bud의 발생이 잎의 분리에 의한 신호와 동시에 잎의 성숙에 관련한 신호가 작용한다. 따라서 이러한 발생은 잎의 성숙 및 탈리와 관련한 일련의 두 가지 신호에 의하여 개시된다고 할 수 있다[39]. |
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