title: The autoregulation of nodulation mechanism is related to leaf development.
abstract: To understand the autoregulation of nodulation (AON) system, in which leguminous plants control the nodule number, we examined the details of the characteristics of hypernodulation soybean mutants NOD1-3 and NOD3-7. A microscopic study showed that NOD1-3 and NOD3-7 produced small-size leaves due to the smaller number of leaf cells, compared with the Williams parent. These phenotypes were not affected by inoculation with bradyrhizobia or nitrate supply. The AON signaling might be related to the control system of leaf cell proliferation. This hypothesis was strongly supported by the finding that activation of AON in wild types by inoculation leads to an increase in the cell number of leaves.
authors.affiliation: Graduate School of Science and Technology, Niigata University, 2-8050 Ikarashi, Nishi-ku, Niigata, 950-2181 Japan.
authors.forename: Sayuri
authors.initials: S
authors.lastname: Ito
authors.forename: Taichi
authors.initials: T
authors.lastname: Kato
authors.forename: Norikuni
authors.initials: N
authors.lastname: Ohtake
authors.forename: Kuni
authors.initials: K
authors.lastname: Sueyoshi
authors.forename: Takuji
authors.initials: T
authors.lastname: Ohyama
mesh_terms: D018506:Gene Expression Regulation, Plant / Q000502:physiology; D009154:Mutation; D018515:Plant Leaves / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism; D053204:Root Nodules, Plant / Q000378:metabolism*; D015398:Signal Transduction; D013025:Glycine max / Q000378:metabolism* / Q000382:microbiology
chemical_list: D010940:Plant Proteins