Journal Article Research Support, Non-U.S. Gov't Plant Proteins nodulation CEP Indoleacetic Acids Nitrogen Peptides 1-naphthaleneacetic acid 142M471B3J 33T7G7757C Arabidopsis Proteins Biological nitrogen fixation CEPR1 CEPR1 protein, Arabidopsis CRA2 Carbon Dioxide Legume root development N762921K75 Naphthaleneacetic Acids Plant Growth Regulators RNA, Plant Receptors, Peptide Review environmental regulation gravitropic set-point angle lateral root lateral root formation mass spectrometry peptide hormone