Potential Role of Native Arbuscular Mycorrhizal Fungi (AMF) in theRestoration of Laurisilva

Catarina Drumonde-Melo, P. Borges, H. Freitas, Luis V. Nunes
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Abstract

The beneficial association of seedlings with arbuscular mycorrhizal fungi (AMF) is thought to improve early tree establishment through increased uptake of poorly labile soil nutrients (particularly P) and enhancing plant tolerance to biotic and abiotic factors. Seedlings of Juniperus brevifolia, an endemic woody plant of the Azores archipelago with potential commercial value, was grown in the nursery with and without inoculation by a commercial plant growth promoter consisting of AMF isolated from the Azores (MICOazorica). Treatments were arranged in a randomized complete block design in a greenhouse. At six months after planting, all AMF-inoculated plants were colonized. The percentage of colonization varied between 46% and 96% (Mean 70%). At harvest, all physical parameters were significantly greater in AMF-inoculated plants relative to uninoculated plants. Based on the obtained results, we strongly advise the use of native AMF, in strategies used in restoration programs in the Azores.
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乡土丛枝菌根真菌(AMF)在月桂树恢复中的潜在作用
幼苗与丛枝菌根真菌(AMF)的有益联系被认为通过增加对不稳定土壤养分(特别是磷)的吸收和增强植物对生物和非生物因素的耐受性来改善早期树木的建立。摘要采用从亚速尔群岛分离的AMF组成的商业植物生长促进剂,在苗圃中接种和不接种短叶刺柏(Juniperus brevifolia)幼苗。在温室中按随机完全区组设计进行处理。种植6个月后,所有接种amf的植株均定植。定植率在46% ~ 96%之间(平均70%)。收获时,接种amf植株的所有物理参数均显著高于未接种植株。根据获得的结果,我们强烈建议在亚速尔群岛的恢复计划中使用本地AMF。
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