A Petunia cDNA Encoding S-Adenosylmethionine Synthetase

Izhaki, Anat; Shoseyov, Oded; Weiss, David

doi:10.1104/pp.108.2.841

Cited by 19 publications

(12 citation statements)

References 9 publications

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“…It is believed that the function of TPR-containing proteins is mediated through protein-protein interaction to modulate diverse cellular processes, including Hsp90 signaling and interaction [29], protein transport across mitochondria [30], regulation of meristem cellular organization [31], and gibberellin signaling [32]. The up-regulation of this regulatory protein may decrease the sterility of pollen during anther development [33].…”

Section: The Up-regulation Of Stress-induced Protein Sti1mentioning

confidence: 99%

Proteomic responses of rice young panicles to salinity

et al. 2006

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Rice (Oryza sativa) is most sensitive to salinity during the reproductive stage. We employed a proteomic approach to further understand the mechanism of plant responses to salinity at an early reproductive stage. Plants were grown in culture solution and salt stress imposed at panicle initiation. After 12 days of stress, young panicles were collected from control and salt stressed plants. The Na + and K + content of panicle and several yield components changed significantly in response to short-term salt stress. The collected panicles were sorted into three different sizes (7 6 1, 11 6 1, and 15 6 1 mm) and their proteome patterns were analyzed using 2-DE in triplicates. The expression pattern of 13 proteins significantly changed in all panicle sizes in response to stress. MS analysis of salt responsive proteins and 16 other highly abundant proteins of panicle led to the identification of proteins involved in several salt responsive mechanisms which may increase plant adaptation to salt stress including higher constitutive expression level and upregulation of antioxidants, up-regulation of proteins involved in translation, transcription, signal transduction, and ATP generation. To the best of our knowledge, this is the first proteome analysis of plant young panicle which may enhance our understanding of plant molecular responses to salinity. Proteome reference map of rice young panicle is available at http://www.proteome.ir.

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Section: The Up-regulation Of Stress-induced Protein Sti1mentioning

confidence: 99%

Proteomic responses of rice young panicles to salinity

et al. 2006

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“…The enzyme S-adenosylmethionine synthetase (SAMS) catalyzes the nucleophilic substitution reaction between methionine and ATP into S-adenosylmethionine (SAM), first described by Cantoni in (1953). Many genes encoding SAMS have been cloned from monocots and dicots (Kawalleck et al 1992;Van Breusegem et al 1994;Espartero et al 1994;Izhaki et al 1995;Whittaker et al 1995;Larsen and Woodson 1991).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of suadea salsa S-adenosylmethionine synthetase gene promotes salt tolerance in transgenic tobacco

Wang

Zhang

et al. 2009

Acta Physiol Plant

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The suadea salsa full-length S-adenosylmethionine synthetase (SsSAMS2) was introduced into tobacco (Nicotiana tabacum L.) by Agrobacterium tumefaciensmediated transformation. The gene transformation and expression in tobacco were confirmed by PCR, RT-PCR and Northern blotting analysis. Several transgenic lines (ST lines) overexpressing SsSAMS2 gene under the control of cauliflower mosaic virus 35S promoter showed more seeds number and weight, and accumulated higher free total polyamines (PAs) than wild-type plants (WT lines) and transformants with blank vector (BT lines). Salt stressinduced damage was attenuated in these transgenic plants, in the symptom of maintaining higher photosynthetic rate and biomass. These results that the transgenic plants overexpressing suadea salsa SAMS2 are more tolerant to salt stress than wild-type plants suggest that PAs may play an important role in contributing salt tolerance to plants.

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“…In floral buds both mRNAs change their levels coordinately according to the developmental stage of the organ. A developmental stage pattern has also been observed during corolla development in petunia (Izhaki et al, 1995) and has been related to the rapid growth of the tissue (Weiss and Halevy, 1989).…”

Section: Discussionmentioning

confidence: 92%

“…Marked variations in the levels of SAMS mRNA have been observed at different stages of plant development (Woodson et al, 1992;Boerjan et al, 1994;Izhaki et al, 1995) and in different plant tissues (Peleman et al, 1989a;Dekeysen et al, 1990). SAMS expression is also increased by a variety of environmental factors, including salt stress (Espartero et al, 1994;Van Breusegem et al, 1994), fungal and bacterial elicitors (Somssich et al, 1989;Gowri et al, 1991;Kawalleck et al, 1992), ozone exposure (Tuomainen et al, 1996), and mechanical stimuli (Espartero et al, 1994;Kim et al, 1994), all of which are also known to induce ethylene biosynthesis (Abeles et al, 1992).…”

mentioning

confidence: 99%

“…SAM is a precursor for the biosynthesis of ethylene (Yang and Hoffman, 1984) and polyamines (Heby and Persson, 1990) and is involved in methylation reactions (Tabor and Tabor, 1984). SAMS cDNA clones have been isolated from several plants (Izhaki et al, 1995). Recently, two genes from pea (Pisum sativum), SAMS1 and SAMS2, were cloned in our laboratory (Gó mez-Gó mez and Carrasco, 1996).…”

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confidence: 99%

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Differential Expression of theS-Adenosyl-l-Methionine Synthase Genes during Pea Development1

Gómez-Gómez

Carrasco

1998

Plant Physiology

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Two genes coding for S-adenosyl-L-methionine synthase (SAMS, EC 2.5.1.6) were previously isolated from pea (Pisum sativum) ovaries. Both SAMS genes were highly homologous throughout their coding regions but showed a certain degree of sequence divergence within the 5 and the 3 untranslated regions. These regions have been used as gene-specific probes to analyze the differential expression of SAMS1 and SAMS2 genes in pea plants. The ribonuclease protection assay revealed different expression patterns for each individual gene. SAMS1 was strongly expressed in nearly all tissues, especially in roots. SAMS2 expression was weaker, reaching its highest level at the apex. Following pollination, SAMS1 was specifically up-regulated, whereas SAMS2 was expressed constitutively. The up-regulation of SAMS1 during ovary development was also observed in unpollinated ovaries treated with auxins. In unpollinated ovaries an increase in SAMS1 expression was observed as a consequence of ethylene production associated with the emasculation process. In senescing ovaries both SAMS1 and SAMS2 genes showed increased expression. Ethylene treatment of unpollinated ovaries led to an increase in the SAMS1 mRNA level. However, SAMS2 expression remained unchangeable after ethylene treatment, indicating that SAMS2 induction during ovary senescence was not ethylene dependent. SAMS mRNAs were localized by in situ hybridization at the endocarp of developing fruits and in the ovules of senescing ovaries. Our results indicate that the transcriptional regulation of SAMS genes is developmentally controlled in a specific way for each gene.

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A Petunia cDNA Encoding S-Adenosylmethionine Synthetase

Cited by 19 publications

References 9 publications

Proteomic responses of rice young panicles to salinity

Proteomic responses of rice young panicles to salinity

Overexpression of suadea salsa S-adenosylmethionine synthetase gene promotes salt tolerance in transgenic tobacco

Differential Expression of theS-Adenosyl-l-Methionine Synthase Genes during Pea Development1

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