The Use of Arbuscular Mycorrhizal Fungi to Improve Strawberry Production in Coir Substrate.
The Use of Arbuscular Mycorrhizal Fungi to Improve Strawberry Production in Coir Substrate.
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DOI：
10.3389/fpls.2016.01237
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发表时间：
2016
影响因子：
5.6
通讯作者：
Xu X
中科院分区：
文献类型：
--
作者：
Robinson Boyer L;Feng W;Gulbis N;Hajdu K;Harrison RJ;Jeffries P;Xu X
草莓是英国境内一种重要的水果作物。为了减少土传疾病的影响，延长生产季节，英国一半以上的草莓生产现在都在基质(主要是椰子)的保护下。像椰子这样的基质通常会耗尽包括丛枝菌根真菌(AMF)在内的微生物，因此，引入有益的微生物很可能有利于商业种植系统。研究表明，在椰子以外的基质上接种草莓可以提高植物对土传病原菌和水分胁迫的耐受性。在低氮素投入和调亏灌溉条件下，研究了AMF能否提高椰子草莓产量。施用AMF显著增加了I级果实的大小和数量，无论是在缺水条件下还是在低氮投入条件下都表现得尤为明显。然而，与土培草莓和土培草莓相比，丛枝菌根真菌在草莓上的定植根长有所减少。此外，丛枝菌根真菌在椰子中定植草莓和玉米根的形态与在土壤和绿地中定植的根的结构有一定的物理差异：定植结构看起来更紧密，在椰子中更小。
Strawberry is an important fruit crop within the UK. To reduce the impact of soil-borne diseases and extend the production season, more than half of the UK strawberry production is now in substrate (predominantly coir) under protection. Substrates such as coir are usually depleted of microbes including arbuscular mycorrhizal fungi (AMF) and consequently the introduction of beneficial microbes is likely to benefit commercial cropping systems. Inoculating strawberry plants in substrate other than coir has been shown to increase plants tolerance to soil-borne pathogens and water stress. We carried out studies to investigate whether AMF could improve strawberry production in coir under low nitrogen input and regulated deficit irrigation. Application of AMF led to an appreciable increase in the size and number of class I fruit, especially under either deficient irrigation or low nitrogen input condition. However, root length colonization by AMF was reduced in strawberry grown in coir compared to soil and Terragreen. Furthermore, the appearance of AMF colonizing strawberry and maize roots grown in coir showed some physical differences from the structure in colonized roots in soil and Terragreen: the colonization structure appeared to be more compact and smaller in coir.