title: Putative PIP1 genes isolated from apple: expression analyses during fruit development and under osmotic stress.
abstract: To gain insight into the function of plasma membrane intrinsic protein (PIP) genes in apple, two genes, MdPIP1a and MdPIP1b, were isolated. MdPIP1 expression was in accordance with the volume increase during fruit development, which is a loading process of water and solutes. In addition, the expression of MdPIP1 was up-regulated in the stems by osmotic stress. These results indicate that MdPIP1 may play important roles not only in fruit expansion, but also in maintaining water homeostasis under stress conditions.
authors.affiliation: National Institute of Fruit Tree Science, Tsukuba, Ibaraki 305-8605, Japan.
authors.forename: Chun-Gen
authors.initials: CG
authors.lastname: Hu
authors.forename: Yu-Jin
authors.initials: YJ
authors.lastname: Hao
authors.forename: Chikako
authors.initials: C
authors.lastname: Honda
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kita
authors.forename: Takaya
authors.initials: T
authors.lastname: Moriguchi
mesh_terms: D002352:Carrier Proteins / Q000235:genetics*; D035264:Flowers / Q000502:physiology; D018506:Gene Expression Regulation, Plant / Q000502:physiology*; D017343:Genes, Plant; D047908:Intracellular Signaling Peptides and Proteins; D027845:Malus / Q000235:genetics* / Q000254:growth & development; D008969:Molecular Sequence Data; D009994:Osmolar Concentration; D013997:Time Factors
chemical_list: D002352:Carrier Proteins; D047908:Intracellular Signaling Peptides and Proteins; C430457:PAK1IP1 protein, human