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Article

Control of Fungal Diseases and Increase in Yields of a Cultivated Jujube Fruit (Zizyphus jujuba Miller var. inermis Rehder) Orchard by Employing Lysobacter antibioticus HS124

1
Department of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Korea
2
Division of Special-purpose Trees, National Institute of Forest Science, Suwon 16631, Korea
*
Author to whom correspondence should be addressed.
Forests 2019, 10(12), 1146; https://doi.org/10.3390/f10121146
Received: 7 November 2019 / Revised: 9 December 2019 / Accepted: 13 December 2019 / Published: 15 December 2019
(This article belongs to the Special Issue Forest, Foods and Nutrition)
The objective of this study is to investigate the inhibitory effects of Lysobacter antibioticus HS124 on fungal phytopathogens causing gray mold rot, stem rot, and anthracnose. Another objective of this study is to promote the yield of fruit in jujube farms. L. antibioticus HS124 produces chitinase, a lytic enzyme with the potential to reduce mycelial growth of fungal phytopathogens involving hyphal alterations with swelling and bulbous structures, by 20.6 to 27.3%. Inoculation with L. antibioticus HS124 decreased the appearance of fungal diseases in jujube farms and increased the fruit yield by decreasing fruit wilting and dropping. In addition, L. antibioticus HS124 produced the phytohormone auxin to promote vegetative growth, thereby increasing the fruit size. The yield of jujube fruits after L. antibioticus HS124 inoculation was increased by 6284.67 g/branch, which was 2.9-fold higher than that of the control. Auxin also stimulated fine root development and nutrient uptake in jujube trees. The concentrations of minerals, such as K, Ca, Mg, and P in jujube fruits after L. antibioticus HS124 inoculation were significantly increased (1.4- to 2.0-fold greater than the concentrations in the control). These results revealed that L. antibioticus HS124 could not only control fungal diseases but also promote fruit yield in jujube farms. View Full-Text
Keywords: auxin; biocontrol; chitinase; fruit; fungal pathogen; jujube; Lysobacter antibioticus HS124; mineral concentration; production; Rhamnaceae auxin; biocontrol; chitinase; fruit; fungal pathogen; jujube; Lysobacter antibioticus HS124; mineral concentration; production; Rhamnaceae
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MDPI and ACS Style

Kwon, J.-H.; Won, S.-J.; Moon, J.-H.; Kim, C.-W.; Ahn, Y.-S. Control of Fungal Diseases and Increase in Yields of a Cultivated Jujube Fruit (Zizyphus jujuba Miller var. inermis Rehder) Orchard by Employing Lysobacter antibioticus HS124. Forests 2019, 10, 1146. https://doi.org/10.3390/f10121146

AMA Style

Kwon J-H, Won S-J, Moon J-H, Kim C-W, Ahn Y-S. Control of Fungal Diseases and Increase in Yields of a Cultivated Jujube Fruit (Zizyphus jujuba Miller var. inermis Rehder) Orchard by Employing Lysobacter antibioticus HS124. Forests. 2019; 10(12):1146. https://doi.org/10.3390/f10121146

Chicago/Turabian Style

Kwon, Jun-Hyeok, Sang-Jae Won, Jae-Hyun Moon, Chul-Woo Kim, and Young-Sang Ahn. 2019. "Control of Fungal Diseases and Increase in Yields of a Cultivated Jujube Fruit (Zizyphus jujuba Miller var. inermis Rehder) Orchard by Employing Lysobacter antibioticus HS124" Forests 10, no. 12: 1146. https://doi.org/10.3390/f10121146

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