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Crop Productivity

Editing long distance transport and storage to optimize the site of nitrogen assimilation in drought and salt-stressed cereal crops

source:  |  time:2016-06-02  |  【print】 【close

source:  |  time:2016-06-02

JIC partner: Dale Sanders & Tony Miller

SIPPE partner: Jiming Gong

 

Large parts of the world are subject to drought and salt-stress and these factors limit secure food production in many of the poorest countries. Professor Gong’s lab has shown that during stress treatments plants allocate more nitrate to their roots. This process has been named SINAR, plant stress initiated nitrate allocation to roots. Both tissue storage and long distance transport of nitrate is mediated by specific membrane proteins that have been characterized in the Sanders/Miller lab at JIC. SINAR results in sub-optimal growth as nitrate assimilation in leaves is more efficient, making use of the greater energy and carbon availability in photosynthetic tissues. This research will determine the role of the SINAR response in plant nitrogen use efficiency. A range of different approaches will be used to generate plants with altered SINAR response and the results will inform on how the plant senses and signals nitrogen status.

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