EFFECTS OF TEMPERATURE, PH AND WATER POTENTIAL ON GROWTH OF 4 FUNGI WITH DISEASE BIOCONTROL POTENTIAL

被引:41
作者
JACKSON, AM [1 ]
WHIPPS, JM [1 ]
LYNCH, JM [1 ]
机构
[1] HORT RES INT,DEPT MICROBIOL & CROP PROTECT,LITTLEHAMPTON BN17 6LP,W SUSSEX,ENGLAND
关键词
D O I
10.1007/BF00303376
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Effects of temperature, pH and water potential on biomass production or hyphal extension of Gliocladium virens (G20) and three Trichoderma isolates were determined in vitro. Optimum biomass production occurred between 20 and 30-degrees-C and at pH ranges between 4.6 and 6.8. Two isolates of T. viride grew at 5-degrees-C and G. virens grew at 35-degrees-C but no isolates grew at 40-degrees-C. Hyphal extension rates and conidial germination of all fungi declined with decreasing water potential over the range -0.7 to -14.0 MPa. In general, growth rates for each isolate were lower on potato/dextrose agar with water potential adjusted with polyethylene glycol than when adjusted with NaCl or glycerol. No mycelial growth or spore germination occurred on agar at -14.0 MPa.
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页码:494 / 501
页数:8
相关论文
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