Phosphorus acquisition and canopy dominance in tropical and subtropical forests: response to Brearley et al.
Phosphorus acquisition and canopy dominance in tropical and subtropical forests: response to Brearley et al.
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热带和亚热带森林中磷的获取和冠层优势：对 Brearley 等人的回应。
DOI：
10.1016/j.tplants.2023.09.002
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发表时间：
2023
影响因子：
20.5
通讯作者：
Johnson D
中科院分区：
文献类型：
--
作者：
Johnson D
布雷尔利等人[1]对我们提出的“虚拟磷获取”（VPA）假说的评论文章，该假说提出了这样的观点，即与丛枝菌根（AM）真菌相比，外生菌根（ECM）真菌具有从不同化学形式获取磷的卓越能力，产生更广泛和功能更重要的菌丝网络，并提供对根部病原体的抵抗力，从而推动了（主要）亚洲森林树冠的优势[2]。这些地下活动需要能量，而冠层的优势提供了宿主将大量碳分配给 ECM 真菌的能力。虽然 VPA 假说无意成为对树冠优势的普遍解释，但我们认为它提供了迄今为止关于该主题的证据的简约观点，并且不同意它过于简单化。也就是说，与任何复杂系统的综合一样，在某些情况下 VPA 假设不成立，Brearley 等人[1]推测某些情况可能是这种情况，我们鼓励其他人也这样做。我们强调，VPA 的关键推力是关于 ECM 和 AM 真菌的相对重要性，这两种真菌都可能通过合适宿主的可用性得到很好的体现。如果 ECM 物种在植物区系中的代表性非常差，那么它们不占优势也就不足为奇了。此外，我们强调相对匮乏
Brearley et al.[1] comment on our opinion paper concerning a proposed ‘virtual phosphorus acquisition’(VPA) hypothesis, which puts forward the idea that dominance of canopies in (mainly) Asian forests is driven by the superior ability of ectomycorrhizal (ECM) fungi to acquire phosphorus from diverse chemical forms, produce more extensive and functionally important hyphal networks, and provide resistance against root pathogens, compared with arbuscular mycorrhizal (AM) fungi [2]. These belowground activities require energy, and dominance of the canopy provides the capacity of hosts to allocate large amounts of carbon to ECM fungi. While the VPA hypothesis was not intended to be a universal explanation of canopy dominance, we suggest that it provides a parsimonious view of the evidence on the subject thus far and disagree that it is an oversimplification. That said, as with any synthesis of complex systems, there will be cases where the VPA hypothesis does not fit, and Brearley et al.[1] speculate on some cases where this may be the case, and we encourage others to do the same.We emphasise that the key thrust of the VPA is about the relative importance of ECM and AM fungi where both are potentially well represented by the availability of suitable hosts. If ECM species are very poorly represented in the flora, it is hardly surprising that they are not dominant. Moreover, we highlight the relative paucity
影响因子：
20.5
作者：
Johnson，David;Liu，Xubing;Burslem，David F. R. P.
通讯作者：
Burslem，David F. R. P.
影响因子：
8.8
作者：
Liu, Xubing;Burslem, David F. R. P.;Johnson, David
通讯作者：
Johnson, David