-
水稻Oryza sativa是世界上重要的禾本科Gramineae粮食作物之一。据估计,到2030年,禾本科作物的产量至少需要提高40%才能满足人口增长所带来的粮食需求[1]。生长发育良好的水稻根系不仅使植株适应不利的生长环境,而且还能提高植株对水分和营养的利用率[2],从而保证结实率和产量。水稻的种子根只在植株发育初期起作用,随后的整个生育期主要通过发育更为完善和发达的侧根和冠根维持生长发育。因此,发掘和鉴定调控水稻侧根和根冠生长发育的蛋白对水稻根系遗传发育及分子调控机制研究显得尤为重要。目前,在水稻根系发育研究中已获得了一些突变体表型及其调控侧根和冠根发育的关键基因,这些基因的功能缺失突变能特异地影响根系的生长发育和形态建成[3-5]。水稻侧根通过中柱鞘和内皮层细胞不断分裂而形成[6]。已有研究表明:真核生物中含锌指结构域蛋白能特异结合DNA,RNA和蛋白质,从而参与调控真核生物细胞的发育和凋亡过程及相关信号传导途径[7-8]。拟南芥Arabidopsis thaliana C1-1i亚族中GIS,GIS2,ZFP8和ZFP5蛋白受赤霉素和细胞分裂素诱导,参与调控表皮毛的生长发育及相关信号传导途径[9-12];而C1-2i亚族中的Zat6被证实参与调控种子根的生长发育和磷酸盐的吸收[13]。最近,水稻中已鉴定出189个含C2H2型锌指结构蛋白,其中至少26个蛋白响应不同的生物胁迫和非生物胁迫[14]。这些研究结果预示着含锌指结构域的蛋白在水稻生长发育过程中起着重要的调节作用。在前期研究中,我们已鉴定到1个水稻调控侧根生长发育的C2HC型锌指结构蛋白。本研究拟利用酵母双杂交技术筛选鉴定与该蛋白互作的调控蛋白,以期为水稻根系生长发育分子机制的解析奠定工作基础。
HTML
[1] | KHUSH G S. What it will take to feed 5.0 billion rice consumers in 2030[J]. Plant Mol Biol, 2005, 59(1): 1-6. doi: 10.1007/s11103-005-2159-5 |
[2] | KING J, GAY A, SYLVESTER-BRADLEY R. Modelling cereal root systems for water and nitrogen capture:towards an economic optimum[J]. Annu Bot, 2003, 91(3): 383-390. doi: 10.1093/aob/mcg033 |
[3] | ZHAO Yu, HU Yongfeng, DAI Mingqiu. The WUSCHEL-related homeobox gene WOX11 is required to activate shoot-borne crown root development in rice[J]. Plant Cell, 2009, 21(3): 736-748. doi: 10.1105/tpc.108.061655 |
[4] | ZHU Zhenxing, LIU Yu, LIU Shaojun. A gain-of-function mutation in OsIAA11 affects lateral root development in rice[J]. Mol Plant, 2012, 5(1): 154-161. doi: 10.1093/mp/ssr074 |
[5] | KANG Bo, ZHANG Zhongchen, WANG Lingling. OsCYP2, a chaperone involved in degradation of auxin-responsive proteins, plays crucial roles in rice lateral root initiation[J]. Plant J, 2013, 74(1): 86-97. doi: 10.1111/tpj.2013.74.issue-1 |
[6] | COUDERT Y, PÉRIN C, COURTOIS B. Genetic control of root development in rice, the model cereal[J]. Trends Plant Sci, 2010, 15(4): 219-226. doi: 10.1016/j.tplants.2010.01.008 |
[7] | LUCHI S. Three classes of C2H2 zinc finger proteins[J]. Cell Mol Life Sci, 2001, 58(4): 625-635. doi: 10.1007/PL00000885 |
[8] | CIFTCIYILMAZ S, MILLTER R. The zinc finger network of plants[J]. Cell Mol Life Sci, 2008, 65(7/8): 1150-1160. |
[9] | GAN Yinbo, KUMIMOYO R, LIU Chang. GLABROUS INFLORESCENCE STEMS modulates the regulation by gibberellins of epidermal differentiation and shoot maturation in Arabidopsis[J]. Plant Cell, 2006, 18(6): 1383-1395. doi: 10.1105/tpc.106.041533 |
[10] | GAN Yinbo, LIU Chang, YU Hao. Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate[J]. Development, 2007, 134(11): 2073-2081. doi: 10.1242/dev.005017 |
[11] | ZHOU Zhongjing, AN Lijun, SUN Lili. Zinc finger protein 5 is required for the control of trichome initiation by acting upstream of ainc finger protein 8 in Arabidopsis[J]. Plant Physiol, 2011, 157(2): 673-682. doi: 10.1104/pp.111.180281 |
[12] | AN Lijun, ZHOU Zhongjing, SUN Lili. A zinc finger protein gene ZFP5 integrates phytohormone signaling to control root hair development in Arabidopsis[J]. Plant J, 2012, 72(3): 474-490. doi: 10.1111/tpj.2012.72.issue-3 |
[13] | DEVAIAH B N, NAGARAJAN V K, RAGHOTHAMA K G. Phosphate homeostasis and root development in Arabidopsis are synchronized by the zinc finger transcription factor ZAT6[J]. Plant Physiol, 2007, 145(1): 147-159. doi: 10.1104/pp.107.101691 |
[14] | AGARWAL P, ARORA R, RAY S. Genome-wide identification of C2H2 zinc-finger gene family in rice and their phylogeny and expression analysis[J]. Plant Mol Biol, 2007, 65(4): 467-485. doi: 10.1007/s11103-007-9199-y |
[15] | LIU Hongbo, GUO Xiang, NAEEM M S. Transgenic Brassica napus L. lines carrying a two gene construct demonstrate enhanced resistance against Plutella xylostella and Sclerotinia sclerotiorum[J]. Plant Cell Tiss Org Cult, 2011, 106(1): 143-151. doi: 10.1007/s11240-010-9902-6 |
[16] | AGARWAL P, ARORA R, RAY S. Genome-wide identification of C2H2 zinc-finger gene family in rice and their phylogeny and expression analysis[J]. Plant Mol Biol, 2007, 65(4): 467-485. doi: 10.1007/s11103-007-9199-y |
[17] | ZHANG Hong, LIU Yanpei, WEN Feng. A novel rice C2H2-type zinc finger protein, ZFP36, is a key player involved in abscisic acid-induced antioxidant defence and oxidative stress tolerance in rice[J]. J Exp Bot, 2014, 65(20): 5795-5809. doi: 10.1093/jxb/eru313 |
[18] | ZEBOL J R, HEWITT N M, MORETTI P A. The CCT/TriC chaperonin is required for maturation of sphingosine kinase 1[J]. Int J Biochem Cell Biol, 2009, 41(4): 822-827. doi: 10.1016/j.biocel.2008.08.012 |
[19] | KUBOTA B H, HYNES G, WILLISON K. The chaperonin containing t-complex polypeptide 1(TCP-1) multisubunit machinery assisting in protein folding and assembly in the eukaryotic cytosol[J]. Eur J Biochem, 1995, 230(1): 3-16. doi: 10.1111/ejb.1995.230.issue-1 |