Priority colonization of Cinnamomum camphora litter by endophytes affects decomposition rate, fungal community and microbial activities under field conditions
Priority colonization of Cinnamomum camphora litter by endophytes affects decomposition rate, fungal community and microbial activities under field conditions
复制标题
内生菌对樟树凋落物的优先定殖影响田间条件下的分解速率、真菌群落和微生物活动
DOI：
10.1016/j.pedobi.2015.09.001
复制
发表时间：
2015-01-01
期刊：
影响因子：
2.3
通讯作者：
Xiang, Changguo
中科院分区：
文献类型：
--
作者：
Lin, Yonghui;He, Xingbing;Xiang, Changguo
衰老的植物材料含有许多内生微生物，这些微生物在植物存活时就定居在植物上。这些内生菌的作用，在随后的殖民化的垃圾分解是不清楚的，因为它们对分解活性的影响。为了提高我们的理解先锋定植内生真菌凋落物分解的影响，五个占主导地位的真菌内生菌分离肉桂叶和接种到落叶之前，监测分解在现场条件下。接种一些内生菌导致分解活性水平的改变，增加木质纤维素分解酶活性，呼吸速率和真菌生物量，并在120天的过程中增加分解水平。接种内生菌也改变了随后的真菌群落的结构。这项工作表明，与内生菌存在凋落物过程中的优先级效应可能会对分解者活动和群落动态产生重大影响，并对生态系统中的营养循环产生潜在影响。(C)2015爱思唯尔有限公司All rights reserved.
Senesced plant material contains many endophytic microorganisms that colonized the plant while it was living. The role that these endophytes play during the subsequent colonization of litter by decomposers is unclear, as is their effects on decomposer activity. To improve our understanding of the effect of pioneer colonization by endophytes on litter decomposition, five dominant fungal endophytes were isolated from Cinnamomum camphora leaves and inoculated onto leaf litter prior to monitoring decomposition under field conditions. Inoculation with some endophytes resulted in altered levels of decomposer activity, increasing lignocellulolytic enzyme activities, respiration rates, and fungal biomass, and increased levels of decomposition over the course of 120 days. Inoculation with endophytes also altered the structure of the subsequent community of fungi. This work suggests that priority effects associated with endophytes present during litterfall can have substantial effects on decomposer activities and community dynamics, with potential effects on nutrient cycling in ecosystems. (C) 2015 Elsevier GmbH. All rights reserved.