한국초지조사료학회지 (Journal of The Korean Society of Grassland and Forage Science)

  • 제41권3호
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  • Pages.162-167
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  • 2021
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  • 2287-5824(pISSN)
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  • 2287-5832(eISSN)
한국초지조사료학회 (The Korean Society of Grassland and Forage Science)
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Effect of Silicon Application on Growth Response of Alfalfa Seedlings Grown under Aluminum Stress in Pots

  • Yoon, Il-Kyu (Division of Applied Life Science (BK21) and Institute of Agriculture & Life Science (IALS), Gyeongsang National University) ;
  • Kim, Min-Jun (Division of Applied Life Science (BK21) and Institute of Agriculture & Life Science (IALS), Gyeongsang National University) ;
  • Min, Chang-Woo (Division of Applied Life Science (BK21) and Institute of Agriculture & Life Science (IALS), Gyeongsang National University) ;
  • Khan, Inam (Division of Applied Life Science (BK21) and Institute of Agriculture & Life Science (IALS), Gyeongsang National University) ;
  • Lee, Byung-Hyun (Division of Applied Life Science (BK21) and Institute of Agriculture & Life Science (IALS), Gyeongsang National University)
  • 투고 : 2021.09.15
  • 심사 : 2021.09.22
  • 발행 : 2021.09.30
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초록

Aluminum (Al) stress in acidic pH is known to decrease the growth and productivity of alfalfa. However, not much is known about how the application of silicon (Si) affects the Al stress response in alfalfa. This study was conducted to evaluate the effect of exogenous application of Si on the growth of alfalfa seedlings exposed to Al stress in pots. Alfalfa seedlings grown in pots for 2 weeks were treated either Al stress (pH 4.0, 0.2 mM Al) or Al stress + Si (1 mM) for 5 days, lengths and biomass of shoot and root, and chlorophyll and carotenoid contents in leaf tissues were analyzed respectively. Al stress treatment inhibited shoot and root growth, and decreased fresh and dry weights, and chlorophyll content in leaves, but increased carotenoid content. In contrast, when alfalfa seedlings treated with Al stress combined with Si, delayed growth caused by Al stress of shoot and root of alfalfa seedlings was restored, dry weight was increased and chlorophyll content of leaf tissue was increased, but carotenoid content was decreased. These results suggest that Si has a function of alleviating Al toxicity in alfalfa, of which it exhibits a mitigating effect by a function that overlaps with some of the intracellular functions of carotenoids.

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과제정보

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2015R1D1A1A01060495)

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