Abstract:
Genes are provided to be used for preparing a transformant with heavy metal, salt or drought resistance which is used for rehabilitation, developing a safe plant capable of preventing second contamination caused by soil loss and absorbing heavy metals less than a wild-type plant and a novel species capable of contributing agriculture and environment of land reclamation or dried area due to improved salt or drought resistance. A gene altering heavy metal and salt resistance and accumulation capacity includes a sequence encoding a biomembrane passage protein where 4 similar biomembrane passage domains are repeated 5 times. A recombinant vector includes the gene which is linked to be controlled by transcription and translation controlling factors, the factors expressible in a plant. The recombinant vector further comprises a gene altering the heavy metal, salt or drought resistance including a sequence encoding an ABC transport protein where 6 biomembrane passage domains and ATP binding domains are repeated 2 times and a gene having the salt or drought resistance selected from the sequences encoding proteins having a GTP binding domain and a CaaL domain(Geranylgeranylation motif). A transformant is transformed by the recombinant vector. A method for preparing an environment purifying plant with improved heavy metal resistance or accumulation capacity or a safe plat with lowered heavy metal absorption comprises the steps of: (a) preparing an expression cassette including the gene linked to be controlling by the transcription and translation controlling factors; (b) preparing the recombinant vector including the expression vector; and (b) introducing the recombinant vector into a plant cell or a plant tissue. Further, the heavy metal is selected from a group consisting of arsenic, antimony, lead, mercury, cadmium, chrome, tin, zinc., barium, bismuth, nickel, cobalt, manganese, iron, cupper, vanadium and a mixture thereof.
Abstract:
본 발명은 중금속이나 염에 대한 내성 및 축적성을 변화시킬 수 있는 유전자 또는 염이나 건조 저항성을 변화시키는 유전자를 포함하는 재조합 벡터 및 이로부터 제조되는 형질전환체에 관한 것이다. 상기 중금속 내성이나 축적성을 변화시킬 수 있는 유전자는 유사한 4개의 생체막 통과 도메인이 5번 반복된 생체막 단백질을 암호화하는 서열을 가진다. 상기 중금속 축적성이나 중금속, 염 또는 건조에 대한 내성을 변화시키는 유전자는 6개의 생체막 통과 도메인과 ATP 결합 도메인이 2번 반복되는 ABC 수송체 단백질을 암호화하는 서열을 가진다. 또한, 상기 건조 저항성을 변화시키는 유전자는 GTP 결합 도메인과 세포질에서 세포막으로 위치를 옮겨갈 수 있는 CaaL 도메인(제라닐제라닐레이션 모티프(Geranylgeranylation motif))을 가진 단백질을 암호화하는 서열로 이루어진 군에서 선택된다. 중금속, 형질전환, 재조합 벡터, 증산작용, 환경정화, 환경복원, 안전한 작물