The ATP-binding cassette (ABC) transporter OsABCG3 is essential for pollen development in rice.

ABSTRACT:

Background

The pollen wall, which protects male gametophyte against various stresses and facilitates pollination, is essential for successful reproduction in flowering plants. The pollen wall consists of gametophyte-derived intine and sporophyte-derived exine. From outside to inside of exine are tectum, bacula, nexine I and nexine II layers. How these structural layers are formed has been under extensive studies, but the molecular mechanisms remain obscure.

Results

Here we identified two osabcg3 allelic mutants and demonstrated that OsABCG3 was required for pollen development in rice. OsABCG3 encodes a half-size ABCG transporter localized on the plasma membrane. It was mainly expressed in anther when exine started to form. Loss-function of OsABCG3 caused abnormal degradation

SUBMITTER: Chang Z 

PROVIDER: S-EPMC6181869 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature