Magnesium is one of the essential macro-elements for plant growth and development, participated in photosynthesis and various metabolic processes. The Mg-transport abilities of the AtMGT (Magnesium Transporter) genes were identified in bacteria or @entity375 mutant system. In our previous studies, both the @entity68752 and @entity68753 were found essential for pollen development in @entity958 . Here we report another AtMGT member, @entity68754 , which was localized to the endoplasmic reticulum, was essential for pollen development as well. @entity68754 expressed notably in pollen grains from bicellular pollen stage to mature pollen stage. A T-DNA insertional mutant of the gene, named @entity68754 -1, showed pollen abortive phenotype, thus we could not get any homozygous mutant from progenies of self-crossed +/ @entity68754 -1 plants. Meanwhile, nearly half of pollens in @entity68754 -RNAi transgenic lines were sterile, consistent with the phenotype of +/ @entity68754 -1 mutant. Transgenic plants expressing @entity68754 in the @entity68754 -1 background could recover the pollen fertility to the wild type. Together, our findings demonstrated that the disruption of @entity68754 in @entity958 could cause a defect of pollen development. The visible pollen abortion appeared at bicellular pollen stage in +/ @entity68754 -1.

An endoplasmic reticulum magnesium transporter is essential for pollen development in XXXX .

@entity68752 :: ('828976(Tax:3702)', 'Gene') :: ['AtMGT5'] @entity958 :: ('3702', 'Species') :: ['Arabidopsis'] @entity68754 :: ('821501(Tax:3702)', 'Gene') :: ['AtMGT4', 'mgt4'] @entity68753 :: ('836577(Tax:3702)', 'Gene') :: ['AtMGT9'] @entity375 :: ('4932', 'Species') :: ['yeast']
@entity958 :: (3702,Species) :: ['Arabidopsis']
