Vegetative hyphal fusion in Epichloë grown in culture.

1) Species names are based on the revised nomenclature of Epichloë species [23].2) NH; non-hybrid. H; hybrid.3) Hyphal fusion++, commonly undergoing vegetative hyphal fusion (the average number of vegetative hyphal fusion in the observed area in one set of experiments (8067.6 μm2) was ≥ 1, which corresponds to ca. > 10 vegetative hyphal fusion per mm2)+, rarely undergoing vegetative hyphal fusion (the average number of vegetative hyphal fusion in the observed area was ND, fusion not detected4) Hyphal cords (see S2 Fig);++, extensive cords of more than ten hyphae running side by side+ minor cords of ca. five hyphae-, no cordsVegetative hyphal fusion in Epichloë grown in culture.

1) 物种命名基于香柱菌属（Epichloë）物种的修订后命名规范[23]。2) NH代表非杂交株（non-hybrid），H代表杂交株（hybrid）。3) 菌丝融合等级：++表示高频发生营养菌丝融合（单组实验的观测区域（8067.6 μm²）内，营养菌丝融合的平均数量≥1，对应每平方毫米约10次以上的融合）；+表示极少发生营养菌丝融合（观测区域内的营养菌丝融合平均数量为ND，即未检测到融合）。4) 菌丝绳（详见补充材料图S2）：++表示存在由10条以上菌丝并排组成的大量菌丝绳；+表示存在约由5条菌丝组成的少量菌丝绳；-表示未形成菌丝绳。本数据集聚焦于培养条件下香柱菌属真菌的营养菌丝融合。