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首页> 外文期刊>Plant Pathology Journal >Activities of Three Agrochemicals against Phytophthora parasitica var. nicotianae and its Metabolic Fingerprints under Chemical Pressures
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Activities of Three Agrochemicals against Phytophthora parasitica var. nicotianae and its Metabolic Fingerprints under Chemical Pressures

机译：三种农药对疫霉疫霉的活性化学压力下的烟草及其代谢指纹图谱

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摘要

Tobacco black shank caused by Phytophthora nicotianae is one of the most destructive diseases suffered by tobacco in China. Streptomycin, calcium oxide and synthetic fertilizer are three important non-target chemicals used frequently during tobacco growing period. This study has evaluated the activities of the non-target chemicals streptomycin, calcium oxide and synthetic fertilizer on the mycelial growth sporulation, zoospore formation and germination of cystospores of P. nicotianae. Metabolic fingerprints of P. nicotianae under pressures of those three chemicals are also compared with control treatments. Streptomycin inhibited mycelial growth, sporangia production, zoospore formation and cystospore germination more effectively than the other chemicals tested. Calcium oxide inhibited sporangia production, zoospore formation and cystospore germination at much higher concentration. Mycelial growth of P. nicotianae was not affected by this chemical. Synthetic fertilizer had negative or no effect on sporangia production and no effect on mycelial growth. Zoospore formation and cystospore germination was inhibited at high concentrations of this chemical. Metabolic fingerprint of P. nicotianae was not or poorly affected by calcium oxide and synthetic fertilizer. Streptomycin significantly changed the fingerprint of the pathogen, substrate of y-aminobutyric acid, fumaric acid, L-alaninamide, L-alanyl-glycine, L-proline, L-pyroglutamic acid and putrescine cannot be utilized by P. nicotianae. So it is nouse to add calcium oxide to soil for black shank management in the field, while is useful for streptomycin. Synthetic fertilizer in some case may enhance the development of the disease. These new findings provide important information for black shank management in the future.
机译：烟草疫霉菌引起的烟草黑胫病是中国烟草遭受的最具破坏性的疾病之一。链霉素，氧化钙和合成肥料是烟草生长期常用的三种重要的非目标化学品。这项研究评估了非目标化学物质链霉素，氧化钙和合成肥料对烟草假单胞菌的菌丝生长孢子形成，游动孢子形成和孢子囊孢子萌发的活性。还比较了在这三种化学物质的压力下，烟草假单胞菌的代谢指纹图谱。链霉素比其他测试化学品更有效地抑制菌丝体生长，孢子囊生成，游动孢子形成和孢子囊萌发。氧化钙以更高的浓度抑制孢子囊的产生，游动孢子的形成和孢子的萌发。烟草假单胞菌的菌丝生长不受该化学物质的影响。合成肥料对孢子囊的产生有负面影响或没有影响，对菌丝体生长没有影响。在这种化学品的高浓度下，游动孢子的形成和孢子的萌发受到抑制。烟青假单胞菌的代谢指纹图谱未受到氧化钙和合成肥料的影响或受到的影响很小。链霉素显着改变了病原体的指纹，γ-氨基丁酸，富马酸，L-丙氨酰胺，L-丙氨酰-甘氨酸，L-脯氨酸，L-焦谷氨酸和腐胺不能被烟草假单胞菌利用。因此，在土壤中添加氧化钙用于黑胫病处理是无济于事的，而对于链霉素则很有用。在某些情况下，合成肥料可能会促进疾病的发展。这些新发现为将来的黑胫病管理提供重要信息。

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