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大蒜类似根缘细胞生物学特性及其对疫霉菌的抑制活性
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摘要
本文分析了大蒜根冠细胞脱落物的种类以及不同温湿度和根长对大蒜根冠细胞脱落物产生的影响,并测定细胞脱落物水培液对辣椒疫霉菌的抑制活性。结果表明,大蒜根冠细胞脱落物为类似根缘细胞,有椭圆/长椭圆形和长形细胞。大蒜类似根缘细胞的产生受根长、温度和湿度的影响。大蒜根系在100ml 2%水琼脂的平板内,20℃条件下培养至25mm以上产生的类似根缘细胞最多。大蒜类似根缘细胞水培液对辣椒疫霉菌游动孢子游动和孢子囊释放都具有显著的抑制活性。该研究表明,大蒜根系产生的类似根缘细胞也是化感抑菌物质释放的重要途径。
This study analyzed the type of garlic sloughed root cap cells and the effect of temperature, humidity and the root length on the production of this kind of cell. The antimicrobial activity of the hydroponic liquid of sloughed root cap cells against Phytophthora capsici leonian was also been tested. The results indicated that the sloughed root cap cells of garlic was border-like cells(BLCs), which includes oval/long oval cells and elongated cells. The production of BLCs was affected by temperature, humidity and the length of roots. Garlic roots can produce a large number of BLCs when garlic roots grow to 25 mm length at 20℃ in plates containing 100 ml 2% water agar. Hydroponic liquid of BLCs showed inhibitory activity against zoospore release from sporangia and zoospores' motility. This study demonstrated that border-like cells is the important way of garlic to release antimicrobial substances.
引文
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