Transcriptome analyses of a salt-tolerant cytokinin-deficient mutant reveal differential regulation of salt stress response by cytokinin deficiency.

PloS One
Rie NishiyamaLam-Son Phan Tran

Abstract

Soil destruction by abiotic environmental conditions, such as high salinity, has resulted in dramatic losses of arable land, giving rise to the need of studying mechanisms of plant adaptation to salt stress aimed at creating salt-tolerant plants. Recently, it has been reported that cytokinins (CKs) regulate plant environmental stress responses through two-component systems. A decrease in endogenous CK levels could enhance salt and drought stress tolerance. Here, we have investigated the global transcriptional change caused by a reduction in endogenous CK content under both normal and salt stress conditions. Ten-day-old Arabidopsis thaliana wild-type (WT) and CK-deficient ipt1,3,5,7 plants were transferred to agar plates containing either 0 mM (control) or 200 mM NaCl and maintained at normal growth conditions for 24 h. Our experimental design allowed us to compare transcriptome changes under four conditions: WT-200 mM vs. WT-0 mM, ipt1,3,5,7-0 mM vs. WT-0 mM, ipt1,3,5,7-200 mM vs. ipt1,3,5,7-0 mM and ipt1,3,5,7-200 mM vs. WT-200 mM NaCl. Our results indicated that the expression of more than 10% of all of the annotated Arabidopsis genes was altered by CK deficiency under either normal or salt stress conditions when compared to ...Continue Reading

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Citations

Mar 15, 2013·Proceedings of the National Academy of Sciences of the United States of America·Rie NishiyamaLam-Son Phan Tran
Jan 1, 2014·Proceedings of the National Academy of Sciences of the United States of America·Chien Van HaLam-Son Phan Tran
Oct 17, 2013·International Journal of Molecular Sciences·Pedro AlmeidaAlbertus H de Boer
Jan 12, 2013·Journal of Experimental Botany·Yuriko OsakabeLam-Son Phan Tran
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Feb 18, 2016·Proceedings of the National Academy of Sciences of the United States of America·Kien Huu NguyenL S Tran
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Datasets Mentioned

BETA
GSE32087

Methods Mentioned

BETA
protein
transgenic
salt stress

Software Mentioned

MapMan
GeneSpring

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