菌物学报2025，Vol.44Issue(5)：84-96,13.DOI:10.13346/j.mycosystema.240319
紫褐小菇MF23产生激素促进铁皮石斛生长
Mycena purpureofusca MF23 promotes the growth of Dendrobium officinale by producing plant hormones
摘要
Abstract
It had been reported that Mycena sp.MF23 promoted the growth of Dendrobium officinale.In present study,the molecular identification of MF23 was conducted for the first time,and the effects of co-culture between MF23 and D.officinale on biomass of the fungus and plant,and on physicochemical properties and plant-hormone content of the substrates were investigated.MF23 was identified as Mycena purpureofusca.After 4 months of growth,the dry weights of root,stem and leaf of D.officinale in co-cultured group(FP)were significantly increased by 18.5％-41.0％as compared with those in plant pure-cultured group(P).Meanwhile,the ergosterol content,and the laccase and lignin peroxidase activities of FP substrates were significantly increased by 11.8％,41.6％and 133.3％respectively as compared with those of the fungus pure-cultured group(F).At this time,there was no significant difference in nitrate nitrogen content between FP and F substrates;however,the content of ammonium and amino nitrogen of FP was significantly increased by 9.3％and 41.1％respectively as compared with that of F.There was no cis-zeatinriboside(cZR)in sterilized pine bark substrate(control)and substrates of P that grew for 4 months.At this time,the cZR content of F substrates was(6.37±0.79)ng/g,the cZR content of FP substrates was(0.66±0.08)ng/g;the indoleacetic acid(IAA)content was significantly increased by 28.1％as compared with that of CK(control),and the IAA content was significantly increased by 36.2％as compared with that of P.These results showed that MF23 could promote the growth of D.officinale by producing plant hormone.The co-culture system had higher nitrogen-utilization efficiency.This study provided references for the further mechanism researches on growth promoting fungi in orchids.关键词
紫褐小菇/互利共生/植物激素/氮素利用效率Key words
Mycena purpureofusca/mutualism/plant hormone/nitrogen utilization efficiency引用本文复制引用
单婷婷,陈晓梅,李寿建,周丽思,陈彤垚,刘城城,王爱荣,郭顺星..紫褐小菇MF23产生激素促进铁皮石斛生长[J].菌物学报,2025,44(5):84-96,13.基金项目
中国医学科学院医学与健康科技创新工程(2021-I2M-1-031,2023-I2M-2-006) This work was supported by the National Medical Science and Health Technology Innovation Project of the Chinese Academy of Medical Sciences(2021-I2M-1-031,2023-I2M-2-006). （2021-I2M-1-031,2023-I2M-2-006）
