Hypsizygus marmoreus(Peck) H.E. Bigelow is an important industrialized mushroom in Asia,yet the lack of basic research on this fungus has hindered further development of its economic value. Research on gaseous hydroge...
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Hypsizygus marmoreus(Peck) H.E. Bigelow is an important industrialized mushroom in Asia,yet the lack of basic research on this fungus has hindered further development of its economic value. Research on gaseous hydrogen has progressed from focusing on its role as a fuel to its role as matter that is able to regulate biological and pharmacological functions. For instance, hydrogen-rich water(HRW) inhibited glucose-and α, β-dicarbonyl compound-induced ROS production in rat kidney homogenates in vitro(Katakura et al. 2012). HRW also significantly decreased the ROS content, maintained the biomass and polar growth morphology of mycelium, and decreased secondary metabolism in G. lucidum under HAc-induced oxidative stress(Ren et al. 2016). However,there is no research to date on the effects of HRW on H. marmoreus mycelial growth and fruiting body *** the vegetative stage, HRW was firstly employed to characterize physiological roles and molecular mechanisms of H2 in the alleviation of three different stresses in basidiomycete H. marmoreus. Our results showed that HRW treatment, of which the H2 concentration was 0.8 m M, significantly reduced the toxicities of CdCl2, Na Cl and H2 O2, leading to significantly improved mycelial growth and biomass. These beneficial effects could be attributed to a significantly decreased formation of malondialdehyde(MDA). Besides, HRW treatment significantly increased the activities of antioxidants(SOD, CAT and GR) as well as the gene expressions of these antioxidants(SOD, CAT, and GR) at the m RNA level. At the reproductive stage, mycelia injured by scratching were treated with HRW to investigate the involvement of the redox system in fruiting body *** to the control group, damaged mycelia treated with HRW regenerated earlier and showed significantly enhanced fruiting body production. Antioxidant capacity increased significantly in damaged mycelia after HRW treatment, as indicated by higher antioxidant enzyme activit
广义香菇(Lentinula edodes sensu lato)包括狭义香菇(L. sensu stricto)、砖红香菇(L. lateritia)、新西兰香菇(***)和未被描述的形态种四个谱系。中国拥有狭义香菇和未被描述的形态种两个谱系,其中狭义香菇又分成两个分支。我们利用I...
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广义香菇(Lentinula edodes sensu lato)包括狭义香菇(L. sensu stricto)、砖红香菇(L. lateritia)、新西兰香菇(***)和未被描述的形态种四个谱系。中国拥有狭义香菇和未被描述的形态种两个谱系,其中狭义香菇又分成两个分支。我们利用ITS2序列和线粒体基因组重测序技术分别对我国香菇种质资源的细胞核和细胞质进行分型研究。结果表明:狭义香菇两个分支与未被描述的形态种拥有不同的细胞核和细胞质类型,分布在东亚北部的狭义香菇核和质型都标为A1,分布在东亚南部的狭义香菇核和质型都标为A2,未被描述的形态种核和质型都标为B,其中未被描述的形态种细胞核又分成B1和B2两个分支。我国绝大多数栽培种质资源的细胞核和细胞质类型都为A1,说明它们主要来源于东亚北部的狭义香菇。另外,还发现许多野生种质资源为不同细胞核和细胞质类型的组合,表明我国野生种质资源之间正发生着频繁的基因交流,急需加大对我国各类型细胞核和细胞质香菇种质资源的性状挖掘和保护。
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