Abstract
A homology-based cloning strategy yielded two cDNA clones presumably encoding Rac/Rop GTPases, Am-rac1 and Am-rac2, from callus cultures of Aquilaria microcarpa. Transcriptional levels of Am-rac1, measured using reverse transcription polymerase chain reaction, remained steady, while those of Am-rac2 increased dramatically following treatment of cultured cells with either a yeast extract or methyl jasmonate. These results suggested that Am-rac1 was a constitutively expressed homologue, while Am-rac2 was induced in A. microcarpa cells. Moreover, a farnesyl diphosphate synthase gene of A. microcarpa, Am-FaPS1, was transcriptionally activated in A. microcarpa cells grown in the presence of methyl jasmonate; however, expression levels were markedly lowered in the presence of various signal transduction-related inhibitors involved in Ca2+-, Rap/Rop GTPase-, or ubiquitin-dependent signaling processes. Whereas, expression of Am-FaPS1 was markedly increased, even in the absence of methyl jasmonate in A. microcarpa cells over-expressing Am-rac2. These findings suggested that Rac/Rop GTPase proteins played important roles in jasmonate-induced enhancement of terpenoid metabolism in A. microcarpa.






Similar content being viewed by others
Abbreviations
- CAM:
-
Calmodulin
- FaPS:
-
Farnesyl diphosphate synthase
- MJ:
-
Methyl jasmonate
- RACE:
-
Rapid amplification of cDNA end
- RT:
-
Reverse transcription
References
Berken A (2006) Rho GTPases in plants—molecular mechanisms and signaling pathways in the process of fertilization. Cell Mol Life Sci 63:2446–2459
Creelman RA, Mullet ME (1997) Biosynthesis and action of jasmonates in plants. Ann Rev Plant Physiol Plant Mol Biol 48:355–381
Gao Y, Dickerson JB, Guo F, Zheng J, Zheng Y (2004) Rational design and characterization of a Rac GTPase-specific small molecule inhibitor. Proc Nat Acad Sci USA 101:7618–7623
Gu Y, Wang Z, Yang Z (2004) ROP/RAC GTPase: an old new master regulator for plant signaling. Curr Opin Plant Biol 7:527–536
Gundlach H, Muller MJ, Kutchan TM, Zenk MH (1992) Jasmonic acid is a signal transducer in elicitor-induced plant cell cultures. Pro Nat Acad Sci USA 89:2389–2393
Ito M, Honda G (2005) Taxonomical identification of agarwood-producing species. Nat Med 59:104–112
Ivanchenko M, Vejlupkova Z, Quatrano RS, Fowler JE (2000) Maize ROP7 GTPase contains a unique, CaaX box-independent plasma membrane targeting signal. Plant J 24:79–90
Kasidimoko NM, Kurosaki F, Lee JB, Hayashi T (2005) Stimulation of calcium signal transduction involves in enhancement of production of scopadulcic acid B by methyl jasmonate in the cultured tissues of Scoparia dulcis. Plant Biotechnol 22:333–337
Kawasaki T, Henmi K, Ono E, Hatakeyama S, Iwano M, Satoh H, Shimamoto K (1999) The small GTP-binding protein Rac is a regulator of cell death in plants. Proc Nat Acad Sci USA 96:10922–10926
Kenmotsu Y, Ogita S, Katoh Y, Yamamura Y, Kurosaki F (2010) Transcriptional activation of putative calmodulin genes Am-cam-1 and Am-cam-2 from Aquilaria microcarpa, in response to external stimuli. Biol Pharm Bull 33:1911–1914
Kenmotsu Y, Ogita S, Katoh Y, Yamamura Y, Takao Y, Tatsuo Y, Fujino H, Kadota S, Kurosaki F (2011) Methyl jasmonate-induced enhancement of expression activity of Am-FaPS-1, a putative farnesyl diphosphate synthase gene from Aquilaria microcarpa. J Nat Med 65:194–197
Kurosaki F, Kaburaki H, Nishi A (1994) Involvement of plasma membrane-located calmodulin in the response decay of cyclic nucleotide-gated cation channel of cultured carrot cells. FEBS Lett 340:193–196
Kurosaki F, Tsurusawa Y, Nishi A (1987) Breakdown of phosphatidylinositol during the elicitation of phytoalexin production in cultured carrot cells. Plant Physiol 85:601–604
Lavy M, Bracha-Drori K, Sternberg H, Yalovsky S (2002) A cell-specific, prenylation-independent mechanism regulates targeting of type II RACs. Plant Cell 14:2431–2450
Li H, Lin Y, Heath RM, Zhu MX, Yang Z (1999) Control of pollen tube tip growth by a Rop GTPase-dependent pathway that leads to the tip-localized calcium influx. Plant Cell 11:1731–1742
Li H, Shen J, Zheng Z, Lin Y, Yang Z (2001) The Rop GTPase switch controls multiple developmental processes in Arabidopsis. Plant Physiol 126:670–684
Lu X, Lin X, Shen Q, Zhang F, Wang Y, Chen Y, Wang T, Wu S, Tang K (2011) Characterization of the jasmonate biosynthetic gene allene oxide cyclase in Artemisia annua L., source of the antimalarial drug artemisinin. Plant Mol Biol Rep 29:489–497
Mitamura T, Shite M, Yamamura Y, Kurosaki F (2009) Cloning and characterization of a gene encoding Rac/Rop-like monomeric guanosine 5′-triphosphate-binding protein from Scoparia dulcis. Biol Pharm Bull 32:1122–1125
Mitamura T, Yamamura Y, Kurosaki F (2011) Modification and translocation of Rac/Rop guanosine 5′-triphosphate-binding proteins of Scoparia dulcis in response to stimulation with methyl jasmonate. Biol Pharm Bull 36:845–849
Mitsuma S, Ishigaki E, Sugiyama R, Asamizu T, Yamada K, Kurosaki F (2004) Activation of phenylpropanoid metabolism in sesame by over-expression of carrot calmodulin gene. Biol Pharm Bull 27:1621–1625
Murashige T, Skoog F (1962) A revised medium for rapid growth and bioassays with tobacco tissue culture. Physiol Plant 15:473–479
Ng LT, Chang YS, Kadir AA (1997) A review on agar (gaharu) producing Aquilaria species. J Trop Forest Prod 2:272–285
Okudera Y, Ito M (2009) Production of agarwood fragrant constituents in Aquilaria calli and suspension cultures. Plant Biotechnol 26:307–315
Ono E, Wong HL, Kawasaki T, Hasegawa M, Kodama O, Shimamoto K (2001) Essential role of the small GTPase Rac in disease resistance of rice. Proc Nat Acad Sci USA 98:759–764
Saitoh D, Asakura Y, Kasidimoko NM, Shite M, Sugiyama R, Lee JB, Hayashi T, Kurosaki F (2007) Cloning and expression of calmodulin gene in Scoparia dulcis. Biol Pharm Bull 30:1161–1163
Shite M, Yamamura Y, Kurosaki F (2009) Cloning and transcriptional regulation of Sdrac encoding a Rac/Rop small guanosine 5′-triphosphate-binding protein gene from Scoparia dulcis. Plant Biotechnol 26:403–408
Steinhilb ML, Turner RS, Gaut JR (2001) The protease inhibitor, MG132, blocks maturation of the amyloid precursor protein Swedish mutant preventing cleavage by beta-Secretase. J Biol Chem 276:4476–4484
Ueda J, Imamura L, Tezuka Y, Tran QL, Tsuda M, Kadota S (2006) New sesquiterpene from Vietnamese agarwood and its induction effect on brain-derived neurotrophic factor mRNA expression in vitro. Bioorg Med Chem 14:3571–3574
Wang CT, Shao JM (2012) Characterization of the ZmCK1 gene encoding a calcium-dependent protein kinase responsive to multiple abiotic stresses in maize. Plant Mol Biol Rep. doi:10.1007/s11105-012-0496-5
Zambounis AG, Kalamaki MS, Tani EE, Paplomatas EJ, Tsaftaris AS (2012) Expression analysis of defense-related genes in cotton (Gossypium hirsutum) after Fusarium oxysporum f. sp. vasinfectum infection and following chemical elicitation using a salicylic acid analog and methyl jasmonate. Plant Mol Biol Rep 30:225–234
Zeng ZL, Yang Z (2000) The Rop GTPase: an emerging signaling switch in plants. Plant Mol Biol 44:1–9
Zhao J, Davis LC, Verpoorte R (2005) Elicitor signal transduction leading to production of plant secondary metabolites. Biotechnol Adv 23:283–333
Acknowledgments
This work was supported, in part, by research grants from the Ministry of Education, Culture, Sports, Science & Technology in Japan, and from Cosmetology Research Foundation.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kenmotsu, Y., Asano, K., Yamamura, Y. et al. Cloning and Expression of Putative Rac/Rop GTPase Genes, Am-rac1 and Am-rac2, Involved in Methyl Jasmonate-Induced Transcriptional Activation of Farnesyl Diphosphate Synthase in Cell Cultures of Aquilaria microcarpa . Plant Mol Biol Rep 31, 539–546 (2013). https://doi.org/10.1007/s11105-012-0529-0
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11105-012-0529-0


