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一个甘薯生长素响应因子基因（）参与转基因植株的类胡萝卜素生物合成以及耐盐和耐旱性。

A Sweetpotato Auxin Response Factor Gene () Is Involved in Carotenoid Biosynthesis and Salt and Drought Tolerance in Transgenic .

作者信息

Kang Chen, He Shaozhen, Zhai Hong, Li Ruijie, Zhao Ning, Liu Qingchang

机构信息

Key Laboratory of Sweetpotato Biology and Biotechnology, Ministry of Agriculture, Beijing Key Laboratory of Crop Genetic Improvement, Laboratory of Crop Heterosis and Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China.

College of Agronomy, Qingdao Agricultural University, Qingdao, China.

出版信息

Front Plant Sci. 2018 Sep 11;9:1307. doi: 10.3389/fpls.2018.01307. eCollection 2018.

DOI:10.3389/fpls.2018.01307
PMID:30254657
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6141746/
Abstract

Auxin response factors (ARFs) compose a family of transcription factors and have been found to play major roles in the process of plant growth and development. However, their roles in plant carotenoid biosynthesis and responses to abiotic stresses are rarely known to date. In the present study, we found that the gene from sweetpotato ( (L.) Lam.) line HVB-3 increased the contents of carotenoids and enhanced the tolerance to salt and drought in transgenic . The transgenic plants exhibited the increased abscisic acid (ABA) and proline contents and superoxide dismutase (SOD) activity and the decreased HO content. Furthermore, it was found that positively regulated the genes associated with carotenoid and ABA biosynthesis and abiotic stress responses. These results suggest that is involved in carotenoid biosynthesis and salt and drought tolerance in transgenic . This study provides a novel gene for improving carotenoid contents and salt and drought tolerance of sweetpotato and other plants.

摘要

生长素响应因子（ARFs）构成了一个转录因子家族，并且已发现它们在植物生长发育过程中发挥着重要作用。然而，迄今为止，它们在植物类胡萝卜素生物合成和对非生物胁迫的响应中的作用鲜为人知。在本研究中，我们发现来自甘薯（Ipomoea batatas (L.) Lam.）品系HVB - 3的该基因增加了类胡萝卜素含量，并增强了转基因拟南芥对盐和干旱的耐受性。转基因拟南芥植株表现出脱落酸（ABA）和脯氨酸含量增加以及超氧化物歧化酶（SOD）活性增强，而过氧化氢（H₂O₂）含量降低。此外，发现该基因正向调控与类胡萝卜素和ABA生物合成以及非生物胁迫响应相关的基因。这些结果表明该基因参与了转基因拟南芥中的类胡萝卜素生物合成以及盐和干旱耐受性。本研究为提高甘薯和其他植物的类胡萝卜素含量以及盐和干旱耐受性提供了一个新的基因。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/10fe22d2f38f/fpls-09-01307-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/9d0f27238a85/fpls-09-01307-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/f5a059309378/fpls-09-01307-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/12f4a184047e/fpls-09-01307-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/44392198f06b/fpls-09-01307-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/abd797f1df40/fpls-09-01307-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/d98e52d0a33b/fpls-09-01307-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/0e9ba458113a/fpls-09-01307-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/925827085387/fpls-09-01307-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/10fe22d2f38f/fpls-09-01307-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/9d0f27238a85/fpls-09-01307-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/9b2d292e8c00/fpls-09-01307-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/f5a059309378/fpls-09-01307-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/12f4a184047e/fpls-09-01307-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/44392198f06b/fpls-09-01307-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/abd797f1df40/fpls-09-01307-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/d98e52d0a33b/fpls-09-01307-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/0e9ba458113a/fpls-09-01307-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/925827085387/fpls-09-01307-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0820/6141746/10fe22d2f38f/fpls-09-01307-g010.jpg

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