Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (12): 93-98.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0754

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Preliminary Study on Physiological Function of Gene Bph14 in Rice

LI San-he1, 2, ZHA Wen-jun1, CHEN Zhi-jun1, 2, ZHOU Lei1, LIU Kai1, 2, YOU Ai-qing1, 2   

  1. 1. Food Crops Institute,Hubei Academy of Agricultural Sciences,Hubei Key Laboratory of Food Crop Germplasms and Genetic Improvement,Wuhan 430064;
    2. Hubei Collaborative Innovation Center for Grain Industry,Yangtze University,Jingzhou 434025
  • Received:2017-09-11 Online:2017-12-25 Published:2017-12-21

Abstract: Gene Bph14 is the first cloned rice insect-resistant gene,however,there were few reports about the effects of Bph14 gene on rice physiology. The study of the physiological effects of the gene on rice would contributes to a comprehensive understanding of the resistance mechanism of gene Bph14 to brown planthopper. The gene Bph14 was transferred into rice cultivar m5274,and genes related to ethylene biosynthesis and abiotic stress response were detected by Q-PCR in transgenic lines carrying gene Bph14. In addition,transgenic lines and the accepter line were treated with 5 μmol/L ABA and 250 mmol/L NaCl respectively. In these lines,OsACO2,OsACS2,OsACS6,O1gP5CS,and O5gP5CS expressed differently from those in m5274. Genes such as CatA,CatB,CatC,RAB16A,LEA3,LIP9,SalT,and AdhI related to abiotic stress of drought and salt-resistance also differently expressed from those in m5274. At the same time,the introduction of Bph14 gene improved the sensitivity of rice to ABA and the resistance to salt stress. These results indicate that gene Bph14 in rice probably participates in the regulation of ethylene biosynthesis and expression of functional genes in abiotic stress response.

Key words: Bph14 gene, ethylene biosynthesis, abiotic stress, rice