title: Overexpression of a Vesicle Trafficking Gene, OsRab7, enhances salt tolerance in rice.
abstract: High soils salinity is a main factor affecting agricultural production. Studying the function of salt-tolerance-related genes is essential to enhance crop tolerance to stress. Rab7 is a small GTP-binding protein that is distributed widely among eukaryotes. Endocytic trafficking mediated by Rab7 plays an important role in animal and yeast cells, but the current understanding of Rab7 in plants is still very limited. Herein, we isolated a vesicle trafficking gene, OsRab7, from rice. Transgenic rice over-expressing OsRab7 exhibited enhanced seedling growth and increased proline content under salt-treated conditions. Moreover, an increased number of vesicles was observed in the root tip of OsRab7 transgenic rice. The OsRab7 over-expression plants showed enhanced tolerance to salt stress, suggesting that vacuolar trafficking is important for salt tolerance in plants.
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Xiaojue
authors.initials: X
authors.lastname: Peng
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Xia
authors.initials: X
authors.lastname: Ding
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Tianfang
authors.initials: T
authors.lastname: Chang
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Zhoulong
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zeng
authors.affiliation: Jiangxi Super-rice Research and Development Center, Nanchang 330200, China.
authors.forename: Yaohui
authors.initials: Y
authors.lastname: Cai
authors.affiliation: Key Laboratory of Molecular Biology and Gene Engineering of Jiangxi Province, College of life science, Nanchang University, Nanchang 330031, China.
authors.forename: Youlin
authors.initials: Y
authors.lastname: Zhu
mesh_terms: D018506:Gene Expression Regulation, Plant; D012275:Oryza / Q000235:genetics / Q000502:physiology*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified; D011392:Proline / Q000378:metabolism; D055049:Salt Tolerance / Q000235:genetics*; D036226:Seedlings / Q000235:genetics / Q000254:growth & development; D020691:rab GTP-Binding Proteins / Q000235:genetics* / Q000378:metabolism; D000090802:rab7 GTP-Binding Proteins
chemical_list: D010940:Plant Proteins; D000090802:rab7 GTP-Binding Proteins; D011392:Proline; D020691:rab GTP-Binding Proteins