Holland LZ

References (2)

Title : Evolution of basal deuterostome nervous systems - Holland_2015_J.Exp.Biol_218_637
Author(s) : Holland LZ
Ref : J Exp Biol , 218 :637 , 2015
Abstract : Understanding the evolution of deuterostome nervous systems has been complicated by the by the ambiguous phylogenetic position of the Xenocoelomorpha (Xenoturbellids, acoel flat worms, nemertodermatids), which has been placed either as basal bilaterians, basal deuterostomes or as a sister group to the hemichordate/echinoderm clade (Ambulacraria), which is a sister group of the Chordata. None of these groups has a single longitudinal nerve cord and a brain. A further complication is that echinoderm nerve cords are not likely to be evolutionarily related to the chordate central nervous system. For hemichordates, opinion is divided as to whether either one or none of the two nerve cords is homologous to the chordate nerve cord. In chordates, opposition by two secreted signaling proteins, bone morphogenetic protein (BMP) and Nodal, regulates partitioning of the ectoderm into central and peripheral nervous systems. Similarly, in echinoderm larvae, opposition between BMP and Nodal positions the ciliary band and regulates its extent. The apparent loss of this opposition in hemichordates is, therefore, compatible with the scenario, suggested by Dawydoff over 65 years ago, that a true centralized nervous system was lost in hemichordates.
ESTHER : Holland_2015_J.Exp.Biol_218_637
PubMedSearch : Holland_2015_J.Exp.Biol_218_637
PubMedID: 25696827

Title : The amphioxus genome and the evolution of the chordate karyotype - Putnam_2008_Nature_453_1064
Author(s) : Putnam NH , Butts T , Ferrier DE , Furlong RF , Hellsten U , Kawashima T , Robinson-Rechavi M , Shoguchi E , Terry A , Yu JK , Benito-Gutierrez EL , Dubchak I , Garcia-Fernandez J , Gibson-Brown JJ , Grigoriev IV , Horton AC , de Jong PJ , Jurka J , Kapitonov VV , Kohara Y , Kuroki Y , Lindquist E , Lucas S , Osoegawa K , Pennacchio LA , Salamov AA , Satou Y , Sauka-Spengler T , Schmutz J , Shin IT , Toyoda A , Bronner-Fraser M , Fujiyama A , Holland LZ , Holland PW , Satoh N , Rokhsar DS
Ref : Nature , 453 :1064 , 2008
Abstract : Lancelets ('amphioxus') are the modern survivors of an ancient chordate lineage, with a fossil record dating back to the Cambrian period. Here we describe the structure and gene content of the highly polymorphic approximately 520-megabase genome of the Florida lancelet Branchiostoma floridae, and analyse it in the context of chordate evolution. Whole-genome comparisons illuminate the murky relationships among the three chordate groups (tunicates, lancelets and vertebrates), and allow not only reconstruction of the gene complement of the last common chordate ancestor but also partial reconstruction of its genomic organization, as well as a description of two genome-wide duplications and subsequent reorganizations in the vertebrate lineage. These genome-scale events shaped the vertebrate genome and provided additional genetic variation for exploitation during vertebrate evolution.
ESTHER : Putnam_2008_Nature_453_1064
PubMedSearch : Putnam_2008_Nature_453_1064
PubMedID: 18563158
Gene_locus related to this paper: brafl-ACHE1 , brafl-ACHE2 , brafl-ACHEA , brafl-ACHEB , brafl-c3xqm2 , brafl-c3xqm5 , brafl-c3xtl0 , brafl-c3xtl1 , brafl-c3xut6 , brafl-c3xut7 , brafl-c3xvw5 , brafl-c3xx27 , brafl-c3xx28 , brafl-c3xx30 , brafl-c3xx32 , brafl-c3xx36 , brafl-c3xx38 , brafl-c3xx39 , brafl-c3xx40 , brafl-c3xx41 , brafl-c3xxt9 , brafl-c3xyd7 , brafl-c3xyd8 , brafl-c3xyd9 , brafl-c3xye0 , brafl-c3xyt7 , brafl-c3xzy1 , brafl-c3xzy2 , brafl-c3y1p9 , brafl-c3y1t3 , brafl-c3y2u3 , brafl-c3y4l1 , brafl-c3y6v9 , brafl-c3y6y4 , brafl-c3y7d7 , brafl-c3y7s1 , brafl-c3y8k5 , brafl-c3y8t3 , brafl-c3y8t4 , brafl-c3y8t5 , brafl-c3y8v8 , brafl-c3y8w1.1 , brafl-c3y8w2 , brafl-c3y9i7 , brafl-c3y9i8 , brafl-c3y9l9 , brafl-c3y9y3 , brafl-c3y087 , brafl-c3yan2 , brafl-c3yaw4 , brafl-c3ybw7 , brafl-c3yc67 , brafl-c3ydm8 , brafl-c3yfm5 , brafl-c3yfz8 , brafl-c3ygc7 , brafl-c3ygc9.1 , brafl-c3ygd0 , brafl-c3ygd1 , brafl-c3ygd2.1 , brafl-c3ygd4 , brafl-c3ygg6 , brafl-c3ygr1 , brafl-c3yi63 , brafl-c3yi64 , brafl-c3yi67 , brafl-c3yi68 , brafl-c3yi69 , brafl-c3yk61 , brafl-c3ykb2 , brafl-c3yla7 , brafl-c3ylp9 , brafl-c3ylq0 , brafl-c3ylq1 , brafl-c3ymu0 , brafl-c3yne9 , brafl-c3ypm6 , brafl-c3yr72 , brafl-c3yra8 , brafl-c3ys59 , brafl-c3yv27 , brafl-c3ywf1 , brafl-c3ywh9 , brafl-c3yx17 , brafl-c3yx19 , brafl-c3yxb9 , brafl-c3yxi7 , brafl-c3yyq5 , brafl-c3yz04 , brafl-c3z1c7 , brafl-c3z1u9 , brafl-c3z1v0 , brafl-c3z3n7 , brafl-c3z5c8 , brafl-c3z9f4 , brafl-c3z066 , brafl-c3z139 , brafl-c3z975 , brafl-c3zab8 , brafl-c3zab9 , brafl-c3zbr4 , brafl-c3zci7 , brafl-c3zcy8 , brafl-c3zd14 , brafl-c3zer1 , brafl-c3zf44 , brafl-c3zf47 , brafl-c3zf48 , brafl-c3zfs6 , brafl-c3zhm6 , brafl-c3ziv7.1 , brafl-c3ziv7.2 , brafl-c3zlg0 , brafl-c3zlg2 , brafl-c3zlg3 , brafl-c3zli5 , brafl-c3zme7 , brafl-c3zme8 , brafl-c3zmp8 , brafl-c3zmv1 , brafl-c3zmv2 , brafl-c3znd6 , brafl-c3znl2 , brafl-c3zqg7 , brafl-c3zqz2 , brafl-c3zs46 , brafl-c3zs49 , brafl-c3zs56 , brafl-c3zv54 , brafl-c3zvv1 , brafl-c3zwz6 , brafl-c3zxg2 , brafl-c3zxq3 , brafl-c3yim2 , brafl-c3zfs5 , brafl-c3zfs3 , brafl-c3xr79 , brafl-c3y7r2 , brafl-c3yj62 , brafl-c3zg22 , brafl-c3y2t9 , brafl-c3y2u0 , brafl-c3ycg1 , brafl-c3ycg2 , brafl-c3ycg4 , brafl-c3z1l3 , brafl-c3zn71 , brafl-c3zj72 , brafl-c3yf35 , brafl-c3z474 , brafl-c3zqr8 , brafl-c3yde6