한국초지조사료학회지 (JKSGFS) Vol. 39 No. 3 (p.153-157)

|Research Article|
Salicylic Acid Counteracts Aluminum Stress-induced Growth and Biomass Yield Reduction in Medicago sativa L.

키워드 :
Salicylic acid,Aluminum stress,Alfalfa,Growth,Forage yield

목차

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. MATERIALS AND METHODS
   1. Alfalfa growth and treatments
   2. Measurement of growth and biomass yield in alfalfa
   3. Determination of leaf relative water content (RWC%)of alfalfa
   4. Statistical analysis
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. Conclusion
Ⅴ. ACKNOWLEDGMENTS
Ⅵ. REFERENCES

초록

Salicylic acid (SA) is an essential plant growth regulator that functions as a signaling molecule in plants. The purpose of this study was to clarify how the exogenous application of SA counteracts aluminum stress-induced growth and biomass yield reduction in alfalfa exposed to aluminum (Al) stress. Two-week-old alfalfa seedlings were exposed to a combination of AlCl3 (0 μM, 50 μM and 100 μM, respectively) and SA (0.1 mM) for 72 hours. We observed, Al stress-induced plant growth inhibition and forage yield reduction are Al stress-dependent manner. A significant reduction of plant height (42.0-52.9%), leaf relative water content (13.0-21.4%), root length (35.4-48.7%), shoot fresh weight (31.2-25.9%), root fresh weight (15.4-23.3%), shoot dry weight (12.7-22.2%), roots dry weight (47.3 -53.5%), were observed in alfalfa. In contrast, SA alleviated the Al-stress and enhanced growth and biomass yield in alfalfa. This study provides useful information concerning the role of SA that counteracts aluminum stress-induced growth and yield reduction in alfalfa.