Interspecific carbon exchange and cost of interactions between basidiomycete mycelia in soil and wood
Interspecific carbon exchange and cost of interactions between basidiomycete mycelia in soil and wood
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DOI：
10.1046/j.1365-2435.2002.00595.x
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发表时间：
2002-04-01
影响因子：
5.2
通讯作者：
Boddy, L
中科院分区：
文献类型：
--
作者：
Wells, JM;Boddy, L
1. 木材腐烂担子菌之间相互作用的结果受到菌丝体所占领土大小的影响。我们研究了形成条索的腐生菌 Phanerochaete velutina (DC: Pers.) Parm. 和 Phallus impudicus (L.) Pers. 之间相互作用的结果。和 Hypholoma fascicule (Huds: Fr) Kumner 超过 152-155 天。确定为夺取或分享土壤和木材领域的能力。就衰变分配和相互作用的碳成本而言。2．仅木材中相互作用的结果不同于真菌在土壤微观世界中竞争对手接种物的结果。竞争能力（捕获或共同占领对手接种物的能力）根据物种和接种物而变化。年龄。在没有土壤的木块配对中，有证据表明 P velutina 机会主义地利用了先前在对手的接种物中动员的 C。3。在土壤系统中，预载 C-14（以葡萄糖形式提供）的短期（28 天）呼吸损失表明相互作用可能会产生大量的 C 成本。取决于对手接种物的资源质量。尽管未观察到种间C-14 相互转移，但在“僵局”相互作用过程中，阴茎接种物从对手菌丝体中积累了C-14。4．腐生索状担子菌被认为对获得的养分高度保守，代表林地生态系统中重要的养分库。在这里，我们证明该群体养分矿化的潜在主要途径是土壤中竞争性相互作用期间养分的损失。
1. The outcome of interactions between wood decay basidiomycete fungi is affected by the size of territory held by a mycelium. We investigated the outcomes of interactions between the cord-forming saprotrophs Phanerochaete velutina (DC: Pers.) Parm., Phallus impudicus (L.) Pers. and Hypholoma fasciculare (Huds: Fr) Kumner over 152-155 days. determined as ability to capture or share territory in soil and wood. in terms of decay partitioning and the carbon cost of interactions.2. The outcome of interactions in wood alone differed from those in which the fungi competed for an opponents' inoculum in soil microcosms. Competitive ability (the ability to capture or co-occupy an opponent's inoculum) varied according to species and inoculum. age. In wood block pairings in the absence of soil there was evidence that P velutina opportunistically utilized C previously mobilized within an opponent's inoculum.3. In soil systems, short-term (28-day) respiratory losses of preloaded C-14 (supplied as glucose) indicated that interaction could have a substantial C cost. depending on the resource quality of the opponents' inocula. Phallus impudicus inocula accumulated C-14 from opponents' mycelia during 'deadlock' interactions, although reciprocal interspecific C-14 transfer was not observed.4. Saprotrophic cord-forming basidiomycetes are considered to be highly conservative of acquired nutrients, representing a significant nutrient reservoir in woodland ecosytems. Here we demonstrate that a potential major pathway for nutrient mineralization by this group is nutrient loss during competitive interactions in soil.