Humic Acid and Synthesized Humic Mimic Promote the Growth of Italian Ryegrass
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- 2023.04.05
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- 2017.09
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서지정보
ㆍ발행기관 : 한국초지조사료학회
ㆍ수록지정보 : 한국초지조사료학회지 / 37권 / 3호
ㆍ저자명 : Laila Khaleda, Min Gab Kim, Woe-Yeon Kim, Jong-Rok Jeon, Joon-Yung Cha
영어 초록
Humic acid (HA) is a complex organic matter found in the environments, especially in grassland soils with a high density. The bioactivity of HA to promote plant growth depends largely on its extraction sources. The quality-control of HA and the quality improvements via an artificial synthesis are thus challenging. We recently reported that a polymeric product from fungal laccase-mediated oxidation of catechol and vanillic acid (CAVA) displays a HA-like activity to enhance seed germination and salt stress tolerance in a model plant, Arabidopsis. Here, we examined whether HA or CAVA enhances the growth of Italian ryegrass seedling. Height and fresh weight of the plant with foliar application of HA or CAVA were bigger than those with only water. Interestingly, enhanced root developments were also observed in spite of the foliar treatments of HA or CAVA. Finally, we proved that HA or CAVA promotes the regrowth of Italian ryegrass after cutting. Collectively, CAVA acts as a HA mimic in Italian ryegrass cultivation, and both as a biostimulant enhanced the early growth and regrowth after cutting of Italian ryegrass, which could improve the productivity of forage crops.
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