| 근권토양의 환경이 고추역병 억제 미생물 Serratia plymuthica A21-4의 고추뿌리와 근권 토양 정착에 미치는 영향 |
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조박, 신순선, 문재예, 송상, 박창석 |
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| The Effect of the Colonization of Serratia plymuthica A21-4 in Rhizosphere Soil and Root of Pepper in Different Soil Environment |
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Pu Cao, Shun Shan Shen, Cai Yi Wen, Shuang Song, Chang Seuk Park |
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| Abstract |
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The biocontrol agent Serratia plymuthica A21-4 was selected and proved as an excellent inhibitor of Phytophthora blight of pepper through in vitro and in vivo experiments in previous studies. To enhance the colonizing density of S. plymuthica A21-4 on plant root and rhizosphere soil, some soil conditions might effect on the colonization of the bacteria were examined. The results obtained from the study indicated that the soils containing more sand were favorable to root colonization of S. plymuthica A21-4. Organic amendment such as 3% maize straw(w/w) was helpful to colonize the bacteria in root and soil. The soil temperature about 20oC, water content around 40%, and soil pH near to neutral or slightly acidic, were optimum condition for the colonization of S. plymuthica A21-4 in the rhizosphere soil and roots of pepper. In addition, existence of indigenous biotic entities was beneficial to the colonization of S. plymuthica A21-4. |
| Key Words:
Phytophthora bight, Serratia plymuthica A21-4, Soil colonizations |
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