The dynamic ion flux test technique was employed to analyze ion absorption by roots in susceptible and resistant rice varieties subjected to Magnaporthe oryzae infection,aiming to determine the effect of Magnaporthe oryzae infection on nutrient absorption in rice plants. The results showed that Magnaporthe oryzae infection caused more obvious disease symptom in susceptible variety and reduced K+ absorption, led to H+ transition from efflux to influx, and reduced Ca2+ absorption with larger unstability in root. In contrast, the resistant rice variety showed moderate disease severity and was characterized by only a slight decrease in absorption of K+, H+, and Ca2+ ions by the roots. These results indicated that subjected to Magnaporthe oryzae infection, resistant rice variety showed stronger ion absorption capacity, while the susceptible rice variety exhibited weaker capacity, which could be an important reason leading to the barrier of nutrients absorption in the roots of susceptible rice variety.
HOU Peichen1, WANG Cheng1,* , WANG Xiaodong1, WANG Meijuan2, ZHU Dazhou1, GAO Quan1
. Research on Magnaporthe oryzae Induced Alternations of Ion Absorption in Roots of Susceptible and Resistant Rice Varieties[J]. Chinese Journal OF Rice Science, 2014
, 28(6)
: 659
-664
.
DOI: 10.3969/j.issn.1001-7216.2014.06.012
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