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japonicus japonicus ap2/erf transcription factor and its coding gene and application
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A technology for transcription factors and coding genes, which can be applied in application, genetic engineering, plant genetic improvement, etc., can solve the problem of less literature reports on individual subfamily, and achieve the effect of improving salt tolerance
Inactive Publication Date: 2018-09-18
SHENZHEN TECHAND ECOLOGY & ENVIRONMENT CO LTD +2
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The AP2 / ERF superfamily is divided into five subfamilies: AP2, DREB, ERF, RAV, and Soloist. At present, a large number of literatures have reported the research on the function and molecular mechanism of the DREB and ERF subfamily genes, but the individual subfamily (Soloist) There are few reports in the literature
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[0067] 1.1.1 Plant material cultivation and stress treatment
[0068] Use japonicus 'Leo' as the material, select mature and plump seeds that are free from diseases and insect pests, soak them in 2% NaClO for 15-20 minutes, wash them with sterile water for 3 times, dry them, and put the sterilized seeds on the B5 medium , cultured in a light incubator for 30 days, treated with 150mM sodiumchloride for 0h, 3h, 12h, and 24h, collected leaves were immediately frozen in liquid nitrogen, and stored in a -80°C refrigerator for later use.
[0069] Analysis of tissue expression specificity: The roots, stems, leaves, flowers, and seeds of J. japonicus were taken, quick-frozen in liquid nitrogen, and stored at -80°C until use.
[0070] Hormone-treated japonicus japonicus, the seedlings cultivate...
[0131] Arabidopsis thaliana Columbia (Col-0) ecotype: preserved in the inventor's laboratory.
[0132] 1.1.2 Strain and carrier
[0133] Agrobacterium tumefaciens strain GV3101 was preserved in the inventor's laboratory; gateway entry vector pDNOR201 and expression vector pH7WG2D were purchased from Invitrogen.
[0134] 1.1.3 Medium
[0135] (1) YEB medium (1L)
[0136] Peptone 5g, yeast extract 1g, sucrose 5g, MgSO 4 ·7H 2 O 0.5g, dilute to 1L with deionized water, if it is a solid medium, add 15g of agarpowder, and sterilize under high temperature and high pressure at 121°C for 15min.
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Abstract
The invention discloses a lotus corniculatus AP2 / ERF transcription factor and an encoding gene and application thereof and belongs to the field of AP2 / ERF transcription factors and application. The invention discloses the gene of an AP2 / ERF transcription factor separated from lotus corniculatus. The nucleotide sequence of the gene is shown as SEQ ID NO.1. The amino acid sequence of protein encoded by the gene of the transcription factor is shown as SEQ ID NO.2. The invention further discloses an AP2 / ERF transcription factor structural domain which can be combined with a cis-acting element to start adverse-resistant response gene expression, and the amino acid sequence of the structural domain is shown as SEQ ID NO.3. Function conversion experiments prove that the gene of the AP2 / ERF transcription factor in a plant can improve salt tolerance of the transgenic plant remarkably, and it shows that the protein encoded by the gene of the transcription factor has a function of the AP2 / ERF transcription factor. The gene of the AP2 / ERF transcription factor has an important application prospect in improving resistance of the plant to adversity stress.
Description
technical field [0001] The present invention relates to transcription factors, in particular to an AP2 / ERF transcription factor related to stress resistance isolated from Lotus corniculatus L., and the present invention also relates to the role of said transcription factors in improving plant resistance to adversity stress The application belongs to the field of AP2 / ERF transcription factor and its application. Background technique [0002] The problems of soil salinization and secondary salinization are widespread in the world, especially in arid and semi-arid areas. Soil drought and salinization seriously hinder the growth of crops and reduce the yield of crops, which have become important factors restricting the sustainable development of irrigated agriculture in the world and affecting the ecological environment. [0003] Lotus corniculatus L. is an excellent perennial leguminous forage widely planted in the world. It has the advantages of rich nutrition, tolerance to b...
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