植物在进化过程中针对干旱、高盐和高低温等逆境胁迫形成了多种适应机制, 植物类受体激酶作为重要的细胞信号传递分子在植物生长和抗逆境胁迫中发挥着重要功能。该文发现一个具有S位点的类受体激酶基因OsSRL可能参与水稻(Oryza sativa)的干旱胁迫反应。利用RNAi技术降低OsSRL的表达水平后, 转基因植株抗旱性增强, 并表现出幼苗存活率、叶绿素含量及鲜重增加等表型。进一步的研究表明30%PEG和100 μmol·L–1ABA可诱导OsSRL基因表达, 利用RNAi降低其表达导致干旱诱导基因RAB16A及LEA3表达水平明显增加。表达模式分析发现OsSRL在胚芽、胚根、根、茎节以及花中表达。以上结果表明, OsSRL表达水平的降低增强植物的干旱耐受性, 其作为一个S-位点样类受体激酶可能参与了水稻对干旱胁迫的反应。
Plants have developed various adaptive mechanisms to drought, salt, temperature and other stresses. Receptor-like kinases play significant roles in plant growth regulation and responses to stresses. We found that a receptor-like kinase with an S-locus domain, OsSRL, might be involved in drought stress response in rice. Downregulation of OsSRL expression by RNA interference produced enhanced drought tolerance and increased seedling survival rate, chlorophyll content and fresh weight as compared with control plants after drought stress treatment. The expression of OsSRL was induced by 30% PEG and 100 μmol·L–1 abscisic acid. Knocking down OsSRL expression enhanced the expression of drought-response genes RAB16A and LEA3. OsSRL was expressed in plumule, radicula, root, node, and flower. These data suggest that OsSRL, as a receptor kinase with an S-locus domain, may play roles in drought stress tolerance in rice.
Bartels D, Sunkar R (2005). Drought and salt tolerance in plants. Crit Rev Plant Sci 24, 23-58
Cutler AJ, Krochko JE (1999). Formation and break down of ABA. Trends Plant Sci 4, 472–478
Grefenc C, Harter K (2004). Plant two-component systems: Priciples, functions, complexity and cross talk. Planta 219, 733-742
Imamura A, Hanaki N, Umeda H, Nakamura A, Suzuki T, Ueguchi C, Mizuno T (1998). Response regulators implicated in His-to-Asp phosphotransfer signaling in Arabidopsis. Proc. Natl. Acad. Sci. 95, 2691-2696
Islam MA, Du H, Ning J, Ye H, Xiong L (2009). Characterization of Glossy1-homologous genes in rice involved in leaf wax accumulation and drought resistance. Plant Mol Biol 70, 443–456.
Jefferson RA (1987). Assaying chimeric genes in plants: the GUS gene fusion system. Plant Mol Biol Rep 5, 387–405
Jose MP (2010). Biotechnology of water and salinity stress tolerance. Current Opinion in Biotechnology 21, 1-12
Kazuo S, Kazuko Y, Motoaki S (2003). Regulatory network of gene expression in the drought and cold stress responses. Current Opinion in Plant Biology 6, 410-417
Lichtenthaler H (1987). Chlorophylls and carotenoids: pigments of photosynthetic biomembranes. Methods Enzymol 148, 350–383
Ma Y, Szostkiewicz I, Korte A, Moes D, Yang Y, Christmann A, Grill E (2009). Regulators of PP2C phosphatase activity function as abscisic acid sensors. Science 324, 1064-1068.
Martin GB, Brommonschenke LS, Chunwongse J (1993). Map-based cloning of a protein kinase gene conferring disease resistance in tomato. Science 262, 1432-1436
Pareek A, Singh A, Kumar M, Kushwaha HR, Lynn AM, Singla-Pareek SL (2006). Whole genome analysis of Oryza Sativa reveals similar architecture of two-component signaling machinery with Arabidopsis. Plant Physiol 142, 380-397
Pastuglia M, Swarup R, Rocher A, Saindrenan P, Roby D, Dumas C, Cock JM (2002). Comparison of the expression patterns of two small gene families of S gene family receptor kinase genes during the defence response in Brassica oleracea and Arabidopsis thaliana. Gene 282, 215-25
Seo PJ, Lee SB, Suh MC, Park MJ, Go YS, Park CM (2011). The MYB96 Transcription Factor Regulates Cuticular Wax Biosynthesis under Drought Conditions in Arabidopsis. The Plant Cell ,23(3), 1138-52
Schopfer CR ,Nasrallah ME ,Nasrallah JB （1997）. The male determinant of self-incompatibility in Brassica . Science 286, 1697-1700.
Schroeder JI, Allen GJ, Hugouvieux V, Kwak JM, Waner D（2001）. Guard cell signal transduction. Annu. Rev. Plant Physiol Plant Mol Biol 52, 627–658
Shinozaki K, Yamaguchi-Shinozaki K (2000). Molecular responses to dehydration and low temperature: differences and cross-talk between two stress signaling pathways. Curr Opin Plant Biol 3, 217-223
Shiu SH, Karlowski WM, Pan R, Tzeng YH, Mayer KF, Li WH （2004）. Comparative Analysis of the Receptor-Like Kinase Family in Arabidopsis and Rice. The Plant Cell 16, 1220–1234
Sirichandra C, Wasilewska A, Vlad F, Valon C, Leung J（2009）. The guard cell as a single-cell model towards understanding drought tolerance and abscisic acid action. J. Exp. Bot. 60, 1439–1463
Stockinger EJ, Gilmour SJ, Thomashow MF (1997). Arabidopsis thaliana CBF1 encodes an AP2 domain-containing transcription activator that binds to the C-repeat/DRE, a cis-acting DNA regulatory element that stimulates transcription in response to low temperature and water deficit. Proc Natl Acad Sci 94, 1035-1040
Takasaki T, Hatakeyama K, Suzuki G, Watanabe M, Isogai A, Hinata K (2000). The S receptor determines self-incompatibility in Brassica stigma . Nature 403, 913-916
Umezawa T, Sugiyama N, Mizoguchi M, Hayashi S, Myouga F, Yamaguchi-Shinozaki K, Ishihama Y, Hirayama T, Shinozaki K (2009). Type 2C protein phosphatases directly regulate abscisic acidactivated protein kinases in Arabidopsis. Proc Natl Acad Sci106, 17588-17593
Vlad F, Rubio S, Rodrigues A, Sirichandra C, Belin C, Robert N, Leung J, Rodriguez PL, Lauriere C, Merlot S (2009). Protein phosphatases 2C regulate the activation of the Snf1-related kinase OST1 by abscisic acid in Arabidopsis. Plant Cell 109: 69-79
Walker JC (1994). Structure and function of the receptor-like protein kinases of higher plants. Plant Molecular Biology 26, 1599-1609
Walker, JC, Zhang R (1990). Relationship of a putative receptor protein kinase from maize to the S-locus glycoproteins of Brassica. Nature 345, 743–746
Wang Q, Guan Y, Yu Y, Chen H, Chen F, Chu C (2008) Overexpression of a rice OsDREB1F gene increases salt, drought, and low temperature tolerance in both Arabidopsis and rice. Plant Mol Biol 67, 589–602
Xiong LZ, Schumaker KS, Zhu JK (2002). Cell signaling during cold, drought, and salt stress. Plant Cell 165-183
Yamaguchi-Shinozaki K, Shinozaki K (2005). Organization of cisacting regulatory elements in osmotic- and cold-stress-responsive promoters. Trends Plant Sci 10, 88–94
Yang YZ, Peng H, Huang HM (2004). Large-scale production of enhancer trapping lines for rice functional genomic. Plant science 167 281-288
Zou JJ, Wei FJ, Wang C, Wu JJ, Ratnasekera D, Liu WX, Wu WH (2010). Arabidopsis Calcium-Dependent Protein Kinase CPK10 Functions in ABA- and Ca2+ -Mediated Stomatal Regulation in Response to Drought Stress. Plant Physiology,154, 1232-43
首页