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首页> 外文期刊>Mycologia >Widespread vegetative compatibility groups in the dry-rot fungus Serpula lacrymans
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Widespread vegetative compatibility groups in the dry-rot fungus Serpula lacrymans

机译：干腐真菌Serpula lacrymans中广泛的营养相容性群体

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摘要

Serpula lacrymans is the most notorious decayer of wooden buildings in temperate regions. The occurrence of geographically widespread vegetative compatibility groups (VCG) in S. lacrymans in Europe is demonstrated in this study. Among 22 heterokaryotic isolates of S. lacrymans, five VCG were found. The most widespread VCG included isolates from Belgium, South and central Norway, separated by more than 1500 km. No other genetic variation, measured as DNA sequence variation or ISSR polymorphisms, was detected between the investigated S, lacrymans isolates, whereas a considerable level of genetic variation was found among five European isolates of the sister taxon, S. himanlioides. It is hypothesised that isolates of S. lacrymans have lost their ability to recognize self from nonself due to sharing of similar VC alleles, caused by a recent genetic bottleneck during the establishment. in northern Europe. Isolates re-isolated from overlapping mycelial zones between different compatible isolates had significantly slower growth than that of the original isolates and the different isolates within a VCG had different growth morphology, indicating that isolates within a single VCG may belong to different genets.
机译：Serpula lacrymans是温带地区最臭名昭著的木制建筑的腐朽者。这项研究证明了欧洲S. lacrymans中地理分布广泛的营养相容性群体（VCG）的发生。在22个乳酸链球菌的异核分离物中，发现了五个VCG。 VCG分布最广，包括来自比利时，南部和挪威中部的分离株，相距1500多公里。在所调查的S.lacrymans分离株之间未检测到其他DNA变异（以DNA序列变异或ISSR多态性衡量），而在姊妹分类单元S. himanlioides的五个欧洲分离株中发现了相当水平的遗传变异。假设由于建立过程中最近的遗传瓶颈，由于共享相似的VC等位基因，酿酒酵母的分离株失去了从非自身中识别自我的能力。在北欧。从不同的兼容分离株之间重叠的菌丝体区重新分离得到的分离株，其生长速度明显慢于原始分离株，并且VCG内的不同分离株具有不同的生长形态，这表明单个VCG内的分离株可能属于不同的种系。

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