首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Comparative Study on Growth Performance of Transgenic(Over-Expressed OsNHX1) and Wild-Type Nipponbare under Different Salinity Regimes
Authors:Kahrani Ishak Nurul  Sulaiman Zohrah  U Tennakoon Kushan
Institution:1.Environmental and Life Sciences, Faculty of Science, University Brunei Darussalam, Jln Tungku Link, Gadong BE 1410, Brunei Darussalam;2.Institut Teknologi Brunei, Jln Tungku Link, Gadong BE 1410, Brunei Darussalam
Abstract:Transgenic Nipponbare which over-expressed a Na+/H+ antiporter gene OsNHX1 was used to compare its growth performance, water status and photosynthetic efficiency with its wild type under varying salinity regimes. Chlorophyll content, quantum yield and photosynthetic rate were measured to assess the impact of salinity stress on photosynthetic efficiency for transgenic and wild-type Nipponbare. Effects of salinity on water status and gas exchange to both lines were studied by measuring water use efficiency, instantaneous transpiration rate and stomatal conductance. Dry shoot weight and leaf area were determined after three months of growth to assess the impacts of salinity on the growth of those two lines. Our study showed that both lines were affected by salinity stress, however, the transgenic line showed higher photosynthetic efficiency, better utilization of water, and better growth due to low transpiration rate and stomatal conductance. Reduction of photosynthetic efficiency exhibited by the wild-type Nipponbare was correlated to its poor growth under salinity stress.
Keywords:growth performance  salinity stress  Na+/H+ antiporter gene OsNHX1  transgenic rice  photosynthetic efficiency  water status  
本文献已被 CNKI 等数据库收录!
点击此处可从《水稻科学》浏览原始摘要信息
点击此处可从《水稻科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号