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Volume 7, Issue 5 (Suppl)
J Biotechnol Biomater
ISSN: 2155-952X JBTBM, an open access journal
Biotechnology 2017
November 13-14, 2017
November 13-14, 2017 Osaka, Japan
19
th
World Congress on
Biotechnology
Sugar apoplastic transport in rice caryopsis during grain filling
Yibing Hu
Nanjing Agricultural University, China
U
sing β-glucoronidase (GUS) and Green Fluorescent Protein (GFP) represented expression, CRISPR-associated gene
editing, cross-fertilization and determination of sugar related physiological parameters in gene mutant lines and wild
type plants, we aimed to investigate the function of sugar transporter OsSWEETs and OsSUTs in rice caryopsis development
during grain filling. Currently, we demonstrated that OsSWEET11 play an essential role in sucrose release frommaternal tissue
to the maternal–filial interface. It might also induce sucrose release from the ovular vascular trace and cross cells of developing
caryopsis. In addition, OsSWEET15, a homolog of OsSWEET11 in rice SWEET family, also play an important part in grain
filling besides its prominent role in pollen development of rice. By contrast, the sucrose-proton symporters OsSUT1/2 which
locate at the plasma membrane of cells adjacent to that of SWEETs located assume influx of sucrose from the apoplast in the
caryopsis. It implies that SWEET and SUT together undertake efflux and influx of sucrose across the plasma membranes when
the sugar traverses apoplastic space in developing caryopsis. These findings will hopefully elucidate the molecular mechanism
of post-phloem sugar transport in rice caryopsis and facilitate the improvement of rice yield and quality by adjusting these
gene’s expression in the future.
Biography
Yibing Hu completed his Ph.D. in 2007, from Institute of Botany, Chinese Academy of Sciences. He is an associate professor of Nanjing Agricultural University
with more than 20 papers in related journals.
huyb@njau.edu.cnYibing Hu, J Biotechnol Biomater 2017, 7:5 (Suppl)
DOI: 10.4172/2155-952X-C1-083