无毒基因已在多种植物病原物，包括真菌、细菌、病毒和卵菌等中得到克隆。
Avr genes have been cloned from a variety of pathogens including fungi, bacteria, viruses and oomycetes.
半持久性的或暂时的传播的特点是，保存植物病原物的时间为几小时至1 - 2天。好评(1)。
Semipersistent, or transitory, transmission is characterized by the retention of plant, pathogens for periods ranging from a few hours to 1 to 2 days.
活性氧迸发是植物对病原物应答的最早期反应之一。
Oxidative burst is one of the earliest responses in plant resistance to pathogen attacks.
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