Analysis of Sugar Content and Expression of Sucrose Transporter Genes (OsSUTs) in Rice Tissues in Response to a Chilling Temperature

Japan Agricultural Research Quarterly
ISSN 00213551
NII recode ID (NCID) AA0068709X

Changes in sucrose metabolism have been implicated in tissue damage found in rice plants exposed to cold. However, little is known about the effect of low temperature on sucrose transport in cold-sensitive plants such as rice. Here, we investigated the changes induced by a 12°C chilling treatment on the soluble sugar content relative to the expression of sucrose transporter genes (OsSUT1-5) in various tissues of young (6-week-old) and mature (booting stage) rice plants. Sucrose levels increased in source tissues but decreased in young panicles during the chilling treatment. Sucrose transporter genes also responded to the chilling treatment: OsSUT1 in leaf sheaths and OsSUT2 and OsSUT4 in panicles were down-regulated. Our results suggested that the sucrose translocation supported by OsSUTs in rice plants decreased during chilling treatment, assuming the involvement of OsSUT1 and OsSUT4 in phloem loading of sucrose. These changes may induce a sugar imbalance in anthers, resulting in impaired pollen development.

Date of issued
Creator Shinichiro TAKAHASHI Ayano MEGURO-MAOKA Midori YOSHIDA
Subject cold tolerance phloem loading
Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 51
Issue 2
spage 137
epage 146
DOI 10.6090/jarq.51.137
Rights Japan International Research Center for Agricultural Sciences
Relation : J-STAGE
Language eng

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