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Wrinkled petals and stamens 1, is required for the morphogenesis of petals and stamens in Lotus japonicus
作者姓名:Chen JH  Pang JL  Wang LL  Luo YH  Li X  Cao XL  Lin K  Ma W  Hu XH  Luo D
作者单位:[1]National Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, and Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China [2]School of Life Science, Hangzhou Normal College, 16 Xuelin Road, Hangzhou 310018, China [3]School of Life Science and Biotechnology, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
摘    要:Although much progress has been made in understanding how floral organ identity is determined during the floral development, less is known about how floral organ is elaborated in the late floral developmental stages. Here we describe a novel floral mutant, wrinkled petals and stamens1 (wps1), which shows defects in the development of petals and stamens. Genetic analysis indicates that wpsl mutant is corresponding to a single recessive locus at the long arm of chromosome 3. The early development of floral organs in wpsl mutant is similar to that in wild type, and the malfunction of the mutant commences in late developmental stages, displaying a defect on the appearance of petals and stamens. In the mature flower, petals and stamen filaments in the mutant are wrinkled or folded, and the cellular morphology under L1 layer of petals and stamen filaments is abnormal. It is found that the expression patterns of floral organ identity genes are not affected in wpsl mutants compared with that of wild type, consistent with the unaltered development of all floral organs. Furthermore, the identities of epidermal cells in different type of petals are maintained. The histological analysis shows that in wpsl flowers all petals are irregularly folded, and there are knotted structures in the petals, while the shape and arrangement of inner cells are malformed and unorganized. Based on these results, we propose that Wpsl acts downstream to the class B floral organ identity genes, and functions to modulate the cellular differentiation during the late flower developmental stages.

关 键 词:花瓣  雄蕊  莲花  植物
收稿时间:2006-01-18
修稿时间:2006-01-182006-03-01

Wrinkled petals and stamens 1, is required for the morphogenesis of petals and stamens in Lotus japonicus
Chen JH,Pang JL,Wang LL,Luo YH,Li X,Cao XL,Lin K,Ma W,Hu XH,Luo D.Wrinkled petals and stamens 1, is required for the morphogenesis of petals and stamens in Lotus japonicus[J].Cell Research,2006,16(5):499-506.
Authors:Chen Jiang Hua  Pang Ji Liang  Wang Li Lin  Luo Yong Hai  Li Xin  Cao Xiang Ling  Lin Kui  Ma Wei  Hu Xiao He  Luo Da
Institution:National Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, and Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
Abstract:Although much progress has been made in understanding how floral organ identity is determined during the floral development,less is known about how floral organ is elaborated in the late floral developmental stages.Here we de- scribe a novel floral mutant,wrinkledt petals and stamensl (wps1),which shows defects in the development of petals and stamens.Genetic analysis indicates that wps1 mutant is corresponding to a single recessive locus at the long arm of chromosome 3.The early development of floral organs in wps1 mutant is similar to that in wild type,and the malfunction of the mutant commences in late developmental stages,displaying a defect on the appearance of petals and stamens.In the mature flower,petals and stamen filaments in the mutant are wrinkled or folded,and the cellular morphology under L1 layer of petals and stamen filaments is abnormal.It is found that the expression patterns of floral organ identity genes are not affected in wps1 mutants compared with that of wild type,consistent with the unaltered development of all floral organs.Furthermore,the identities of epidermal cells in different type of petals are maintained.The histological analysis shows that in wps1 flowers all petals are irregularly folded,and there are knotted structures in the petals,while the shape and arrangement of inner cells are malformed and unorganized.Based on these results,we propose that Wps1 acts downstream to the class B floral organ identity genes,and functions to modulate the cellular differentiation during the late flower developmental stages.
Keywords:Lotusjaponicus  wpsl mutant  ABC model  floral organ differentiation
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