Cardiff School of Biosciences, Cardiff University, Biomedical Building, Museum Avenue, Cardiff, UK.
Fungal Genet Biol. 2010 Jun;47(6):522-30. doi: 10.1016/j.fgb.2010.01.006. Epub 2010 Feb 6.
Mycelial networks operate on scales from microscopic to many m(2) and naturally persist for extended periods. As fungi exhibit highly adaptive development, it is important to test behavioural responses on natural substrata with realistic nutrient levels across a range of spatial scales and extended time periods. Here we quantified network responses over 7.5 months in large (57 x 57cm) microcosms to test whether grazing shifts the network to a more resilient architecture. Resource limitation constrained any ability to respond at all, with both grazed and ungrazed networks gradually thinning out over time. Added resources sustained further exploratory growth, but only transiently increased cross-connectivity and network resilience, when tested by simulated damage in silico. Grazed networks were initially weaker and emergence of new exploratory growth was curtailed. However, increased interstitial proliferation led to new cross-links, consolidating the existing mycelial network and increasing the resilience of the network to further attack.
菌丝网络的作用范围从微观到数百万平方米不等，并且自然存在的时间很长。由于真菌表现出高度适应性的发育，因此在具有现实营养水平的天然基质上，在一系列空间尺度和较长时间内测试行为反应非常重要。在这里，我们在大型（57 x 57cm）微宇宙中量化了超过 7.5 个月的网络响应，以测试放牧是否会使网络转变为更具弹性的结构。资源限制完全限制了任何响应能力，随着时间的推移，无论是放牧的还是未放牧的网络都逐渐变薄。额外的资源维持了进一步的探索性生长，但仅在模拟的虚拟损伤测试中，才会暂时增加交叉连接和网络弹性。放牧网络最初较弱，新的探索性生长的出现受到限制。然而，增加的间隙增殖导致新的交叉链接，巩固了现有的菌丝网络并增加了网络对进一步攻击的弹性。
