云南蘑菇中毒事件中的毒蘑菇物种多样性

近年来,云南省每年发生超过500起蘑菇中毒事件,造成2 000余人中毒,约30人死亡,成为我国蘑菇中毒危害最为严重的省份。系统研究蘑菇中毒事件中的毒蘑菇多样性,可以为蘑菇中毒精准防控提供科学依据和技术支撑。本研究对云南省2013年以来开展过科学物种鉴定的223起中毒事件进行了系统分析,发现云南省蘑菇中毒一年四季均有发生,主要集中在6-9月份,中毒事件数和中毒人数7月份达到高峰,而6月份死亡人数最多。地区分布分析发现云南省蘑菇中毒事件涉及14个市州,中毒事件数前5位分别为德宏、玉溪、保山、楚雄和普洱,均位于云南中部及以南地区。223起中毒事件中共成功鉴定出47种毒蘑菇,分属6种中毒类型(急性肝损害型、急性肾衰竭型、横纹肌溶解型、胃肠炎型、神经精神型和光敏性皮炎型)。这些毒蘑菇包含发现于中国的新物种16种,以及2019年以来发现的中国新记录种3种。致命鹅膏Amanita exitialis和亚稀褶红菇Russula subnigricans分别造成19人和9人死亡,是云南省最危险的2种剧毒蘑菇。青褶伞Chlorophyllum molybdites、日本红菇R. japonica、光硬皮马勃Scleroderma cepa、近江粉褶菌Entoloma omiense和发光类脐菇Omphalotus olearius位列胃肠炎型中毒的前5位。热带紫褐裸伞Gymnopilus dilepis、毒歧盖伞近似种Inosperma cf. virosum和兰茂牛肝菌Lanmaoa asiatica位列神经精神型中毒的前3位。叶状耳盘菌Cordierites frondosus是目前云南省造成光敏性皮炎型中毒的唯一物种。

Species diversity of poisonous mushrooms causing poisoning incidents in Yunnan Province,Southwest China

In recent years, over 500 mushroom poisoning incidents involving more than 2 000 patients and ca. 30 deaths yearly have raised Yunnan as the most severe province of mushroom poisoning in China. Comprehensive investigation on species diversity of poisonous mushrooms causing poisoning incidents is urgently needed for precise prevention and control of mushroom poisoning. Based on species identification of 223 poisoning incidents in Yunnan since 2013, we found that mushroom poisoning occurred throughout the year, especially from June to September, and poisoning incidents and patients peaked in July while deaths peaked in June. Geographically, poisoning occurred in 14 prefectures and Dehong, Yuxi, Baoshan, Chuxiong and Pu’er ranked the top five, which were located in central to southern Yunnan. Forty-seven poisonous mushrooms were identified, causing six different clinical syndromes (acute liver failure, acute renal failure, rhabdomyolysis, gastroenteritis, psycho-neurological disorder and photosensitive dermatitis). Of which, 16 species originally described from China and three Chinese new records were published since 2019. Amanita exitialis and Russula subnigricans were most poisonous and dangerous in Yunnan, resulting in 19 deaths and 9 deaths, respectively. Chlorophyllum molybdites, R. japonica, Scleroderma cepa, Entoloma omiense and Omphalotus olearius were the top five species causing gastroenteritis. Gymnopilus dilepis, Inosperma cf. virosum and Lanmaoa asiatica monopolized the top positions resulting in psycho-neurological disorder and Cordierites frondosus was the only one species so far causing photosensitive dermatitis in Yunnan Province.