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    Influence of cultivating conditions on toxin produced by Pestalotiopsis funerea Desm.
    枯斑拟盘多毛孢的培养条件对其产的影响
    The results showed that there existed the pathogenic material, namely toxin, in the culture liquid of Pestalotia funerea.
    结果表明 ,松赤枯病菌培养液中有致病物质即素存在 ,该菌在PD培养液中能达到最大产量 ;
    Strains TR2 and TR3 destroyed the aeciospores more distinctly than TR1. Strain TR1 possessed the highest ability to produce toxins in the culture liquid of PD, and the aeciospore walls could control its toxin production.
    TR1对锈孢子壁的破坏作用弱于TR2和TR3,但在PD培养液中有较强的产能力,锈孢子壁能抑制TR1菌株产
    Conditions of Toxin Production by Ceratosphaeria phyllostachdis and Its Impact on Plants
    毛竹枯梢病病原菌产条件及其对植物的影响
    Inhibiting effects of 4 toxic mushroom strains and their toxin on Cytospora chrysosperma(Pers.)Fr.
    四种蘑菇菌株及其素对杨树烂皮病菌生长的抑制作用
    4. The toxin pathogenic mechanism study illustrated:Dealt with toxin,the cell membrane and lipid of the pine needles were induced to superoxidation. The change of MDA content reached its maximum (48% higher than contract) after 24hr for toxin treatment and the membranes were destroyed at last.
    4.素致病机理研究显示,马尾松针用素处理后可诱使寄主细胞膜脂发生过氧化反应,在处理后24小时即使MDA的含量变化达到最大(与对照相比高于对照48%人 最终造成对膜的伤害。处理后寄主组织的 PPO活性也较对照为高,说明索处理后寄主体内生理代谢发生了有害变化,组织的细胞膜在一定程度上受到了伤8。
    The toxin extracts of strains Amanita virosa, Clitocybe dealbata and Ramaria ephemeroderma showed significantly inhibiting effects on either mycelia growth or spores germination of Cytospora chrysosperma.
    蘑菇素粗提液对杨树烂皮病菌菌丝生长和孢子萌发抑制作用结果表明:鳞柄白鹅膏、白霜杯伞、白霜杯伞3菌株的素提取液对杨烂皮病菌不论是菌丝生长还是孢子萌发,都有明显的抑制作用;
    Wood treated with low mole weight PF resin. DPB and quaternary ammonium can come up to a nature strong resistance decay. and DPB and quaternary ammonium are low toxin and free pollution.
    低分子PF树脂、DPB和季铵盐作为防腐剂均可使处理木材达到天然强耐腐级的要求,且DPB和季铵盐类低、无污染。
    The more pathogen toxin is produced in the condition of 20℃~25℃,vibration,continuous darkness ,pH6 for 12 days.
    病原菌分泌的素是一种还原性多糖 ,是致病的主要成分 ,在 2 0℃~ 2 5℃、振荡、连续黑暗和 p H6条件下培养 1 2天产最多。
    The optimum temperature and pH value of isolate growth and toxin production were 25 ℃ and pH 6 respectively. Aeration is beneficial to toxin production and had no significant effects on isolate growth.
    适于菌株生长和产的温度为 2 5℃ ,p H值为 6 .通气有利于素的产生 ,但对菌株生长影响不明显 .
    The isolate growth peak appeared on the 10 th day after cultivation and the most toxin was produced on the 12 th day.
    用改良 Fries培养液培养的菌株在第 10天出现生长高峰 ,在第 12天产最多 .
    Light treatment had no effect on toxin production,but successive darkness for 24 h increased toxin production.
    光照处理对菌株生长影响很小 ,但在连续黑暗条件下 ,有利于产 .
    chrysosperma. The inhibiting rates of crude toxin extracts of 4 toxic mushroom strains to the growth of C. chrysosperma mycelium are all 100, and those to spore sprouting are 93.36--97.29.
    4个蘑菇菌株的素粗提液对病原菌株菌丝生长抑制率均达 10 0 % ,对孢子萌发的抑制率为 93 36 %~ 97 2 9% .
    To explore the mechanisms of pine wilt disease, in vitro toxin production of a bacterium strain, GcM5-1A (Pseudomonas fluorescens) isolated and identified from Busaphelenchus xylophelus, was examined. Toxicity of the cell free filtrate of the liquid medium after culturing the bacterium was assayed by the fluorescence microscopic bioassay.
    用荧光染色显微生测法检测液体培养基的无细胞滤液性,研究从松材线虫虫体上分离鉴定的荧光假单胞GcM5-1A菌株在寄主体外培养的产现象。
    Influence of cultivating conditions on toxin production of Pestalotiopsis funerea was explored by the comparison of toxin produced from P.funerea cultivated on four solid media and a liquid culture medium.
    为进一步深入探索培养条件对枯斑拟盘多毛孢产能力的影响,对该菌在4种固体培养基与一种液体培养基上的产能力进行了比较研究.
    A series of experiments confirmed that cultivating conditions could significantly influence its capacity of toxin production.
    一系列实验结果表明培养条件是该菌产能力大小的重要影响因素.
 

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