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NTIS 바로가기생명과학회지 = Journal of life science, v.22 no.11 = no.151, 2012년, pp.1515 - 1522
The phytohormone abscisic acid (ABA) plays an important role in the adaptive response of plants to abiotic stresses. ABA also regulates many important processes, including seed dormancy, germination, inhibition of cell division, and stomatal closure. OsABF2 (Oryza sativa ABRE binding factor2) is one...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
OsABF2란 무엇인가? | 또한 ABA는 종자휴면, 발아, 세포분열의 저해, 기공개폐와 같은 중요한 과정에 관여하고 있다. OsABF2(Oryza sativa ABRE Binding Factor2)는 벼에서 비생물학적 스트레스와 ABA 신호전달 과정에 양성적으로 관여하는 bZIP 형태의 전사인자이다. OsABF2 유전자의 발현은 ABA와 다양한 스트레스 처리에 의해 유도된다. | |
식물의 ABA는 생명활동 중 어떤 과정에 관여하고 있는가? | 식물호르몬인 abscisic acid (ABA)는 식물의 비생물학적 스트레스의 적응과정에서 중요한 역할을 수행하고 있다. 또한 ABA는 종자휴면, 발아, 세포분열의 저해, 기공개폐와 같은 중요한 과정에 관여하고 있다. OsABF2(Oryza sativa ABRE Binding Factor2)는 벼에서 비생물학적 스트레스와 ABA 신호전달 과정에 양성적으로 관여하는 bZIP 형태의 전사인자이다. | |
식물이 받을 수 있는 스트레스는 크게 생물학적 스트레스와 비생물학적 스트레스 두 가지로 나눌 수 있는데, 각각의 스트레스를 주는 요인은 무엇이 있는가? | 식물이 받을 수 있는 스트레스는 크게 생물학적 스트레스와 비생물학적 스트레스 두 가지로 나눌 수 있다. 생물학적 스트레스는 다른 생명체에 의한 스트레스를 말하며, 그 이외의 가뭄(drought), 염분(salinity), 고온(heat), 저온(cold), 과다한 빛(excess light), 중금속(heavy metal), 오존(ozone), UV (ultra-violet radiation), 저산소(hypoxia), 영양소 결핍 (nutrient deficiency) 등이 비생물학적 스트레스의 요인으로 언급이 되고 있다[3,29,30]. 특히, 가뭄이나 염분에 의한 스트레스는 식물에 삼투 스트레스(osmotic stress)로 작용하는데 이는 식물의 생장과 발달에 영향을 주어 작물의 경우에는 생산성에 큰 영향을 미친다[2,47]. |
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