Proline accumulation and salt-stress-induced gene expression in a salt-hypersensitive mutant of Arabidopsis

Plant Physiology
J Liu, J K Zhu

Abstract

The sos1 mutant of Arabidopsis thaliana is more than 20 times more sensitive to NaCl stress than wild type Arabidopsis. Because proline (Pro) is generally thought to have an important role in plant salt tolerance, the sos1 mutant and the wild type were compared with respect to their capacity to accumulate Pro under NaCl stress, and sos1 mutant plants accumulated more Pro than wild-type. The P5CS gene, which catalyzes the rate-limiting step in Pro biosynthesis, is induced by salt stress to a higher level in sos1 than in the wild type. Although a defective high-affinity K uptake system in sos1 causes K deficiency and inhibits growth in NaCl-treated plants, this decrease is not a sufficient signal for Pro accumulation and P5CS gene expression. Not all salt-stress-induced genes have a higher level of expression in sos1. The expression levels of AtPLC and RD29A, which encode a phospholipase C homolog and a putative protective protein, respectively, are the same in sos1 as in the wild type. However, the expression of AtMYB, which encodes a putative transcriptional factor, is induced to a much higher level by salt stress in sos1. Thus, the SOS1 gene product serves as a negative regulator for the expression of P5CS and AtMYB, but has n...Continue Reading

References

Oct 1, 1992·Proceedings of the National Academy of Sciences of the United States of America·C A HuD P Verma
Jan 1, 1991·Annual Review of Microbiology·L N Csonka, A D Hanson
Jan 1, 1980·Annual Review of Biochemistry·E Adams, L Frank
Apr 25, 1995·Proceedings of the National Academy of Sciences of the United States of America·T HirayamaK Shinozaki
Apr 1, 1996·The Plant Journal : for Cell and Molecular Biology·M IshitaniH J Bohnert

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Citations

Apr 2, 2008·Amino Acids·Nathalie Verbruggen, Christian Hermans
Mar 30, 2013·Photosynthesis Research·Jin-Lin Zhang, Huazhong Shi
Jul 23, 2013·Plant Physiology and Biochemistry : PPB·Lili TangXi Bai
Mar 6, 1999·Current Opinion in Plant Biology·D P DixonR Edwards
Mar 6, 1999·Current Opinion in Plant Biology·H J Bohnert, E Sheveleva
Mar 31, 1999·The Plant Journal : for Cell and Molecular Biology·H LeeJ K Zhu
Oct 3, 1999·The Plant Journal : for Cell and Molecular Biology·L XiongJ K Zhu
Sep 11, 2002·The Plant Journal : for Cell and Molecular Biology·Albino MaggioRay A Bressan
Feb 20, 2013·Biologie aujourd'hui·Kilani Ben RejebArnould Savouré
Feb 4, 2012·Journal of Experimental Botany·An YangWen-Hao Zhang
Apr 14, 2004·Molecular Plant-microbe Interactions : MPMI·Georgina FabroMaría E Alvarez
Apr 4, 2003·Genes & Development·Viswanathan ChinnusamyJian-Kang Zhu
Jun 27, 2002·The Plant Cell·Byeong-ha LeeJian-Kang Zhu
Sep 29, 2011·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·V P KholodovaVl V Kuznetsov
Sep 12, 2002·Annual Review of Plant Biology·Jian-Kang Zhu
Apr 11, 2012·International Journal of Molecular Sciences·Yerim KwonByeong-Ha Lee
Jan 28, 2014·Plant Molecular Biology Reporter·Jie ZhouQiang Zhuge
Jan 1, 2002·The Arabidopsis Book·Liming Xiong, Jian-Kang Zhu
Feb 13, 2004·Proceedings of the National Academy of Sciences of the United States of America·Huixia ShouKan Wang

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