Biological control of plant pathogens: advantages and limitations seen through the case study of Pythium oligandrum
Biological control of plant pathogens: advantages and limitations seen through the case study of Pythium oligandrum
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DOI：
10.1007/s11356-013-1807-6
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发表时间：
2014-04-01
影响因子：
5.8
通讯作者：
Rey, P.
中科院分区：
文献类型：
--
作者：
Gerbore, J.;Benhamou, N.;Rey, P.
某些植物有益微生物[生物控制剂（BCA）]的管理似乎是控制植物病原体的一种有前途且环境友好的方法。然而，由于BCAs在现场应用时缺乏一致性，其应用仍然受到限制。在本文中，通过寡雄腐霉（Pythium oligandrum）（一种在过去十年中受到广泛关注的卵菌）为例，了解了 BCA 的优点和局限性。少雄假单胞菌发挥的生物防治作用是一个复杂过程的结果，其中包括通过控制病原体产生的直接作用和/或少雄假单胞菌介导的间接作用，即诱导抗性和促进生长。少雄假单胞菌拮抗作用是一个多方面且依赖于目标真菌的过程。有趣的是，它似乎并没有破坏根部微生物区系的生物多样性。少雄 P. oligandrum 与植物有非典型的关系，因为它能迅速渗透到根部组织，但不能在植物中存活。根部定殖后，由于少雄假单胞菌激发植物防御系统，植物受到保护，免受一系列病原体的侵害。 BCA（此处为 P. oligandrum）的管理讨论了其与极其复杂的农业系统的相互作用。
The management of certain plant beneficial microorganisms [biological control agents (BCAs)] seems to be a promising and environmental friendly method to control plant pathogens. However, applications are still limited because of the lack of consistency of BCAs when they are applied in the field. In the present paper, the advantages and limitations of BCAs are seen through the example of Pythium oligandrum, an oomycete that has received much attention in the last decade. The biological control exerted by P. oligandrum is the result of a complex process, which includes direct effects through the control of pathogens and/or indirect effects mediated by P. oligandrum, i.e. induction of resistance and growth promotion. P. oligandrum antagonism is a multifaceted and target fungus-dependent process. Interestingly, it does not seem to disrupt microflora biodiversity on the roots. P. oligandrum has an atypical relationship with the plant because it rapidly penetrates into the root tissues but it cannot stay alive in planta. After root colonisation, because of the elicitation by P. oligandrum of the plant-defence system, plants are protected from a range of pathogens. The management of BCAs, here P. oligandrum, is discussed with regard to its interactions with the incredibly complex agrosystems.