Functional evolutionary developmental biology (evo-devo) of morphological novelties in plants  

作　　者：Jisi ZHANG Ying TIAN Li WANG Chaoying HE 

机构地区：[1]State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

出　　处：《Journal of Systematics and Evolution》2010年第2期94-101,共8页植物分类学报（英文版）

基　　金：supported by a grant(30870175) from the National Natural Science Foundation of China (to CYH);the Hundred Talents Project of the Chinese Academy of Sciences (to CYH)

摘　　要：The origin of morphological and ecological novelties is a long-standing problem in evolutionary biology. Understanding these processes requires investigation from both the development and evolution standpoints, which promotes a new research field called＂evolutionary developmental biology＂ （evo-devo）. The fundamental mechanism for the origin of a novel structure may involve heterotopy, heterochrony, ectopic expression, or loss of an existing regulatory factor. Accordingly, the morphological and ecological traits controlled by the regulatory genes may be gained, lost, or regained during evolution. Floral morphological novelties, for example, include homeotic alterations （related to organ identity）, symmetric diversity, and changes in the size and morphology of the floral organs. These gains and losses can potentially arise through modification of the existing regulatory networks. Here, we review current knowledge concerning the origin of novel floral structures, such as ＂evolutionary homeotic mutated flowers＂, floral symmetry in various plant species, and inflated calyx syndrome （ICS） within Solanaceae. Functional evo-devo of the morphological novelties is a central theme of plant evolutionary biology. In addition, the discussion is extended to consider agronomic or domestication-related traits, including the type, size, and morphology of fruits （berries）, within Solanaceae.The origin of morphological and ecological novelties is a long-standing problem in evolutionary biology. Understanding these processes requires investigation from both the development and evolution standpoints, which promotes a new research field called＂evolutionary developmental biology＂ （evo-devo）. The fundamental mechanism for the origin of a novel structure may involve heterotopy, heterochrony, ectopic expression, or loss of an existing regulatory factor. Accordingly, the morphological and ecological traits controlled by the regulatory genes may be gained, lost, or regained during evolution. Floral morphological novelties, for example, include homeotic alterations （related to organ identity）, symmetric diversity, and changes in the size and morphology of the floral organs. These gains and losses can potentially arise through modification of the existing regulatory networks. Here, we review current knowledge concerning the origin of novel floral structures, such as ＂evolutionary homeotic mutated flowers＂, floral symmetry in various plant species, and inflated calyx syndrome （ICS） within Solanaceae. Functional evo-devo of the morphological novelties is a central theme of plant evolutionary biology. In addition, the discussion is extended to consider agronomic or domestication-related traits, including the type, size, and morphology of fruits （berries）, within Solanaceae.

关 键 词：BIODIVERSITY development evolution functional evo-devo HETEROCHRONY heterotopy morphological novelty. 

分 类 号：Q959.8[生物学—动物学] S828.5[农业科学—畜牧学]