Identification and characterization of mRNA transcripts differentially expressed in response to high salinity by means of differential display in the mangrove, Bruguiera gymnorrhiza

Toshiaki Banzai, Gitit Hershkovits, Don J. Katcoff, Nobutaka Hanagata, Zvy Dubinsky, Isao Karube

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

In this study we applied the differential display method to transcripts extracted from leaves of Bruguiera gymnorrhiza treated with 500 mM NaCl for 0, 6 h, 3 and 28 days to identify genes that are differentially expressed in response to salt stress. The expression of twelve transcripts, whose corresponding cDNA fragments differentially appeared on differential display, was then analyzed by northern hybridization. Nine of them were affirmed to be up-regulated or induced by salt treatment. By screening a cDNA library, we have cloned five full-length cDNAs and identified putative protein products for three of them by homology with known protein. The RNA transcript encoding fructose-6-phosphate, 2-kinase/fructose-2,6-bisphophatase increased at 6 h following salt treatment. Transcripts encoding dihydrolipoamide dehydrogenase and lipoic acid synthase distinctly increased from 1 to 3 days after salt treatment regardless of light condition. The relationship between the expression pattern of these RNA transcripts and the function of their respective encoding proteins in response to salt stress is discussed.

Original languageEnglish
Pages (from-to)499-505
Number of pages7
JournalPlant Science
Volume162
Issue number4
DOIs
StatePublished - 2002

Bibliographical note

Funding Information:
We greatly thank K. Sumiya and M. Hoshino for their technical supports. An Endowed Chair in Environmental Biotechnology funded by the EBARA Corporation, Japan supported this work.

Funding

We greatly thank K. Sumiya and M. Hoshino for their technical supports. An Endowed Chair in Environmental Biotechnology funded by the EBARA Corporation, Japan supported this work.

FundersFunder number
Ebara Corporation

    Keywords

    • Bruguiera gymnorrhiza
    • Differential display
    • Dihydrolipoamide dehydrogenase
    • Fructose-6-phosphate, 2-kinase/fructose-2,6-bisphosphatase
    • Lipoic acid synthase
    • Salt stress

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