Won Sang-Jae, Kwon Jun-Hyeok, Kim Dong-Hyun, Ahn Young-Sang
Division of Forest Resources, Chonnam National University, Gwangju 61186, Korea.
Department of Fire Safety Engineering, Jeonju University, Jeollabuk-do 55069, Korea.
Pathogens. 2019 Jan 9;8(1):6. doi: 10.3390/pathogens8010006.
This study investigated the control of foliar fungal diseases and growth promotion of seedlings in coastal reclaimed land through the use of MH48. MH48 can produce lytic enzymes chitinase and β-1,3-glucanase that can inhibit foliar pathogens by 37.4 to 50.5%. Nevertheless, foliar diseases appeared in the seedlings with bacterial inoculation, and their survival rate decreased because they were unable to withstand salt stress. However, MH48 significantly increased the total nitrogen and phosphorus contents in the soils through fixing atmospheric nitrogen and solubilizing phosphorus. The growth of seedlings with bacterial inoculation increased, particularly in root dry weight, by 7.42 g plant, which was 1.7-fold greater than that of the control. MH48 produces the phytohormone auxin, which potentially stimulates seedling root growth. seedlings significantly increased in total nitrogen content to 317.57 mg plant and total phosphorus content to 46.86 mg plant. Our results revealed the effectiveness of MH48 not only in the control of foliar fungal diseases but also in the growth promotion of seedlings in coastal lands.
本研究通过使用MH48来调查其对沿海开垦地中叶面真菌病害的防治及幼苗生长促进情况。MH48能产生溶菌酶几丁质酶和β-1,3-葡聚糖酶，可抑制37.4%至50.5%的叶面病原体。然而，接种细菌的幼苗出现了叶面病害，且由于无法承受盐胁迫，其存活率下降。不过，MH48通过固氮和溶磷显著增加了土壤中的总氮和总磷含量。接种细菌的幼苗生长加快，尤其是根干重，每株增加7.42克，比对照高1.7倍。MH48产生植物激素生长素，这可能刺激幼苗根系生长。幼苗的总氮含量显著增加至每株317.57毫克，总磷含量增加至每株46.86毫克。我们的结果揭示了MH48不仅在防治叶面真菌病害方面有效，而且在促进沿海土地幼苗生长方面也有效。
