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Effect of Light Quality on Growth and Endogenous IAA Metabolism of Ganoderma lucidum

机译：光质对灵霉素生长和内源性IAA新陈代谢的影响

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To study the effect and mechanism of light quality on Ganoderma lucidum,and to provide a theoretical basis for facility cultivation with light irradiation strategy,this work focused on the effect of light quality on growth and endogenous indole-3-acetic acid (IAA) metabolism of G.lucidum.The growth index,endogenous levels of IAA and enzymes related to IAA metabolism and polysaccharides content of G.lucidum were investigated in different growth periods under different light.In this study,G.lucidum strain S3 was used.Mycelium were grown on a modified potato dextrose agar (PDA) medium in petri dishes and irradiated with red,yellow,green,blue light-emitting diodes (LED),and cultured in darkness as contrast.Stock strain was inoculated to cultivation media so as to allow a further growth of G lucidum.Reactions of primordia and fruit body to different light conditions which created by red,yellow,green,blue and white color filter in the greenhouse were studied,too.Results showed that,under the blue LED,mycelium maintained a steady growth,and polysaccharides content were significantly higher than that in other treatments; under the red LED,the growth rate and endogenous IAA content both showed highest in early stage; under the green LED,mycelium owned lowest growth rate and fresh weight.Enzymes related to IAA metabolism were also significantly influenced by light quality.The activity of indole acetic acid oxidase (IAAO),peroxidase (POD) and tryptophan synthetase under the blue LED showed high in early time,but decreased later,and the IAA content was consistently at low level.Mycelium cultured under yellow LED showed highest activity of both IAAO and tryptophan synthetase,and medium IAA content.Light also makes a difference for further development of G.lucidum.Blue light irradiation could significantly promote the formation of primordia and polysaccharides accumulation.While white light irradiation could increase yield of fruit body compared to other treatments.Endogenous IAA content of G.lucidum was highest at button stage but decreased with development,while emerged a picking up after spore spraying.Red and yellow light irradiation significantly improved endogenous IAA level during the growth of fruit body.The activity of IAAO,POD and tryptophan synthetase varied differently with growth under different light.In summary,blue light irradiation was the best from the viewpoint of steady growth,formation of primordia and polysaccharides accumulation; red light irradiation improved endogenous IAA level and promoted growth of mycelium in early stage of cultivation; white light increased yield of fruit body.Light quality affects growth and regulation of the level of endogenous IAA of G.lucidum.
机译：为了研究对灵芝光质量的效果和机制，并提供一种用于设施栽培与光照射策略的理论基础上，本工作集中在对生长和内源吲哚-3-乙酸（IAA）代谢光质量的影响G.lucidum.The生长指数，涉及到的灵芝IAA代谢和多糖含量IAA和酶的内源性水平在不同发育阶段进行了调查下不同light.In这项研究中，灵芝应变S3是used.Mycelium被在培养皿上的改性的马铃薯葡萄糖琼脂生长（PDA）培养基，并用红，黄，绿，蓝发光二极管（LED），并且照射在黑暗中为contrast.Stock菌株培养物接种到培养介质，以便允许原基和子实体，其创建由在温室红色，黄色，绿色，蓝色和白色滤色器进行了研究不同光照条件G的lucidum.Reactions的进一步增长，too.Results显示，下蓝色LED，菌丝保持了稳定增长和多糖含量均高于其他处理显著更高;红色LED下，生长速率和内源IAA内容都显示在最高早期;绿色LED下，菌丝资最低生长速率和相关的代谢IAA也显著由吲哚乙酸氧化酶（IAAO）的光活性quality.The影响新鲜weight.Enzymes，过氧化物酶（POD）和蓝色LED下色氨酸合成酶表现出高在早期时间，但后来降低，并且IAA含量始终在下黄色LED培养低level.Mycelium既表现出IAAO和色氨酸合成酶的活性最高，与介质IAA content.Light也使得G的进一步发展的差lucidum.Blue光照射可以促进显著原基和accumulation.While白光照射可提高子实体产量多糖的形成相比，灵芝的其他treatments.Endogenous IAA含量最高在按钮阶段，但与发展降低，而出现一个拾取后孢子spraying.Red和f的生长过程中的黄色光照射显著改善内源性IAA水平IAAO，POD和瑞特body.The活性色氨酸合成酶多变不同地在不同light.In摘要增长，蓝色光照射是从稳定增长，形成的原基和多糖积累的观点出发，最好的;红光照射提高内源IAA水平和在培养的早期阶段促进菌丝体生长;果body.Light品质的白色光增加的产量影响灵芝的内源IAA水平的生长和调节。

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