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首页> 外文期刊>European Journal of Plant Pathology >Biocontrol potential of Bacillus subtilis B1 against sapstain fungus in rubber wood
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Biocontrol potential of Bacillus subtilis B1 against sapstain fungus in rubber wood

机译：Bacillus枯草芽孢杆菌B1对橡胶木材的Sapstain真菌的生物控制潜力

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摘要

Rubber wood, one of the most preferred plantation timbers in the tropical regions, is easily prone to various moulds, decay and stain fungi. Lasiodiplodia theobromae, the dominant sapstain fungus of rubber wood, causes high economic loss to the industry through its bluish black sap wood discolouration. In our previous laboratory trials, Bacillus subtilis B1 isolated from market available compost was proved as a potent biocontrol agent against the sapstain fungus L. theobromae. The main aim of the present study was to demonstrate the biocontrol potential of B. subtilis B1 against rubber wood sapstain fungus on fresh rubber wood pieces during pre-monsoon, southwest monsoon and northeast monsoon seasons in the field. The visual ratings provided for the wood fungal growth and internal wood stain exhibited the bio-protectant efficiency of B. subtilis B1 even in the southwest monsoon season, which is considered as the most favourable period for the wood fungal growth. Biocontrol agent, B. subtilis B1 demonstrated significant inhibitions of sapstain fungus on open stacked rubber wood pieces in all the seasons. The frequent rainfalls during monsoon periods provide a conducive environment for fungal growth on felled rubber wood. Successful field evaluations of the biocontrol agent during pre-monsoon, monsoon and post-monsoon periods would guarantee year round protection against rubber wood sapstain. B. subtilis B1 displayed holistic biocontrol efficiency towards other stain (Ceratocystis sp., Fusarium sp.), mould (Aspergillus sp., Penicllium sp.) and decay fungi (Trametes versicolor) as well.
机译：橡胶木材是热带地区中最优选的种植园木材之一，容易容易容易发生各种模具，腐烂和污渍真菌。 Lasiodiplodia Theobromae是橡胶木的主要皂石，通过其蓝色的黑色SAP木材变色导致行业的高经济损失。在我们以前的实验室试验中，从市场上分离的Bacillus枯草芽孢杆菌B1被证明是一种有效的生物控制剂对抗Sapstain真菌L. Theobromae。本研究的主要目的是展示在季风，西南季风和东北季风季节的新鲜橡胶木块上对橡胶木果酱的B.枯草芽孢杆菌B1的生物控制潜力。为木材真菌生长和内部木染色提供的视觉评级表现出B.枯草芽孢杆菌B1的生物保护剂效率，即使在西南季风季节也被认为是木材真菌生长的最有利的时期。 Biocontrol代理商，B.枯草芽孢杆菌B1在所有季节中展示了Sapstain真菌在开放的堆叠橡胶木块上的显着抑制。季风期间频繁的降雨为鼠标砍伐橡胶木材的真菌生长提供了一种有利的环境。在季风，季风和季风期间的生物毒剂药物的成功田间评估将保证对橡胶木皂的圆形保护。 B.枯草芽孢杆菌B1向其他染色（Ceratocystis Sp。，Fusarium sp.），模具（aspergillus sp。，penicllium sp.）和腐烂真菌（Trametes Versicolor）的整体生物控制效率。

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