2009
DOI: 10.1007/s11103-009-9550-6
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Microarray analysis of the moss Physcomitrella patens reveals evolutionarily conserved transcriptional regulation of salt stress and abscisic acid signalling

Abstract: Regulatory networks of salt stress and abscisic acid (ABA) responses have previously been analyzed in seed plants. Here, we report microarray expression profiles of 439 genes encoding transcription-associated proteins (TAPs) in response to salt stress and ABA in the salt-tolerant moss Physcomitrella patens. Fourteen and 56 TAP genes were differentially expressed within 60 min of NaCl and ABA treatment, respectively, indicating that these responses are regulated at the transcriptional level. Overlapping express… Show more

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Cited by 96 publications
(118 citation statements)
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References 159 publications
(191 reference statements)
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“…We further note that a moss cDNA that was annotated as encoding a DREB2A homolog is induced by dehydration (21). The AP2 domain transcription factors, to which DREB2A belongs, is a large protein family, and it is not easy to identify direct orthologs in mosses and angiosperms (22). Nevertheless, the fact that the moss DREB2A-related protein is induced by drought stress suggests that it could have a function analogous to that of Arabidopsis DREB2A.…”
Section: Discussionmentioning
confidence: 85%
See 1 more Smart Citation
“…We further note that a moss cDNA that was annotated as encoding a DREB2A homolog is induced by dehydration (21). The AP2 domain transcription factors, to which DREB2A belongs, is a large protein family, and it is not easy to identify direct orthologs in mosses and angiosperms (22). Nevertheless, the fact that the moss DREB2A-related protein is induced by drought stress suggests that it could have a function analogous to that of Arabidopsis DREB2A.…”
Section: Discussionmentioning
confidence: 85%
“…It is further conceivable that both Med25 and DREB2A could function as downstream components in the ABA pathway. We note that ABI3, encoding a key mediator of the ABA response (23), is among the genes that are induced by dehydration in Physcomitrella (22).…”
Section: Discussionmentioning
confidence: 93%
“…The microarray experiments were done in biological triplicates. Data analysis with the Expressionist software (Genedata, Basel, Switzerland) was performed as described previously (25).…”
Section: Characterization Of Ppors Paralogs Est Abundance and Exprementioning
confidence: 99%
“…Physcomitrella patens has been shown to be highly tolerant of salt and osmotic stress, 7,11,12 and they can survive exposure to 1A and B) and Phypa_211998 ( Fig. 1C and D).…”
Section: Resultsmentioning
confidence: 99%
“…Keywords: abiotic stress, salt stress, osmotic stress, oscillations, gene expression data suggest, at least in the context of the moss, that dehydrationinduced temporal dynamics in steady-state transcript levels that is responsive to the severity of the stress may contribute to survival under periodic fluctuations of water availability and confer evolutionary advantages during colonization of land by plants. 10 In addition to its ability to survive moderate dehydration stress, P. patens has also been shown to be highly tolerant of salt and osmotic stress, 7,11,12 as P. patens can survive exposure to 350 mM NaCl and 500 mM sorbitol. 7 In this study, we aimed to address whether dosage-dependent oscillatory increases in steady-state transcript levels of stress-responsive genes are a more general phenomenon in moss, or whether it is restricted to dehydration stress.…”
Section: Introductionmentioning
confidence: 99%