PDF(Pubmed)
Abstract：
Wood decomposition through fungal activity is essential to the natural carbon cycle. There are three primary patterns of wood decay: white rot, brown rot, and soft rot. However, geological records of wood decay mainly originate from fossil woods, which exclusively describe white rot before the Cenozoic. Fossilized charcoal is another excellent medium for preserving pre-charring decay structures. In this study, we collected numerous charcoals from the upper Permian and observed multiple microstructures indicative of wood decay. The distinctive characteristics closely resemble the symptoms of contemporary wood-rotting types, including the removal of the middle lamella and channel-like lysis seen in white rot, shot-like holes and wavy cell walls in brown rot, and cavities within the secondary walls in soft rot. This study documents the early occurrences of multiple wood-rotting types during the Late Paleozoic and provides insights into the range of fungal metabolic strategies employed during this period.
摘要：
通过真菌活性分解木材对自然碳循环至关重要。木材腐烂有三种主要模式：白腐病，棕色腐烂，和软腐病。然而,木材腐烂的地质记录主要来自化石木材，专门描述新生代之前的白腐病。化石木炭是另一种保存预炭化衰变结构的优良介质。在这项研究中,我们从上二叠纪收集了许多木炭，并观察到表明木材腐烂的多种微观结构。独特的特征与当代木材腐烂类型的症状非常相似，包括去除白腐病中的中间薄片和通道样裂解，棕色腐烂中的枪状孔和波浪状细胞壁，和次生壁内的空洞在软腐病中。这项研究记录了古生代晚期多种木材腐烂类型的早期发生，并提供了在此期间采用的真菌代谢策略范围的见解。
