5种无机物对猴头菌发菌期,产量及锌,硒富集影响的研究   总被引：3，自引：0，他引：3  

张檀  杜双田 《西北林学院学报》1995,10(1):59-63,79

应用正交试验设计研究了ＺｎＳＯ４、ＭｇＳＯ４、ＨＢＯ３、ＮａＨＳｅＯ３、ＫＣｌ对猴头菌发菌期、产量及Ｚｎ、Ｓｅ元素含量的影响。结果表明：利用关中地区的原料栽培猴头菌，在原料中添加一定量的ＺｎＳＯ４、ＭｇＳＯ４、ＮａＨＳｅＯ３、ＫＣｌ不会影响猴头菌的发菌期和产量，而加入的ＺｎＳＯ４和ＮａＨＳｅＯ３能显著地提高子实体中Ｚｎ、Ｓｅ元素的含量；在试验范围内，猴头菌对Ｚｎ和Ｓｅ的富集分别是线性和非线性规律；ＨＢＯ３对发菌期的影响符合二次多项式趋势，但对产量无显著影响。  相似文献   

VA菌根菌丝对土壤磷和铜的吸收及其相关性   总被引：15，自引：0，他引：15  

李晓林  曹一平 《中国农业科学》1992,25(5):65-72

利用隔网分室盆栽方法,将土壤分为根系吸收区和菌丝吸收区,以白三叶草为供试作物,定量测定了VA菌根菌丝对土壤磷和铜的吸收量及其在植物体内的分布。结果表明,菌根的侵染显著提高了植物对磷和铜的吸收。但提高的程度受菌丝生长区供磷水平的影响。施磷水平提高,菌丝吸磷量明显增加,磷在地上部和根中的分布趋势一致。铜则不同,随施磷量的增加,地上部菌丝贡献率上升,而根中贡献率下降,菌丝吸铜总量也呈下降趋势。说明,菌丝对铜的吸收和运输与磷无密切关系。然而,铜从根部向地上部的运输受植物磷营养状况影响。  相似文献   

中国东北地区5个常见蜜环茵生物种的培养特性     

孙立夫田淑敏  杨国亭赵俊秦国夫  宋玉双宋瑞清 《东北林业大学学报》2007,35(2):48-51

选择马铃薯-葡萄糖、松膏Ⅰ、松膏Ⅱ、ShawⅢ和MS共5种培养基，分别对中国东北地区5个常见蜜环菌生物种的单倍体和双倍体菌株进行培养特性研究。结果表明：5个蜜环菌生物种在5种培养基上的菌落形态和颜色以及培养基颜色变化等方面表现大同小异。单倍体菌落颜色基本为白色，有菌索产生的菌落易变成浅褐色；双倍体菌落基本上为浅褐色或褐色，壳皮状，随着菌丝生长和菌索形成能力的提高，菌落的颜色也表现出越来越深的趋势，绝大多数培养基不变色。5个生物种单双倍体菌株间在菌丝生长和菌索形成方面存在变化，双倍体菌株的菌丝生长速度普遍要比单倍体菌丝快，且菌索形成的能力也明显增强，菌丝生长良好的则菌索形成能力也相对较强；每个生物种不同交配类型的单倍体菌株间在同一种培养基上也基本表现相同。在5种培养基中，两个松膏培养基对促进菌丝生长和菌索的形成是最佳选择，其次是shawⅢ培养基，再次是PDA培养基，而MS培养基则最差。  相似文献   

内生真菌在禾草体内的分布特征     

赵晓静  王萍  李秀璋  古丽君  李春杰 《草业科学》2015,(8):1206-1215

以醉马草(Achnatherum inebrians)、中华羊茅(Festuca sinensis)、野大麦(Hordeum brevisubulatum)及披碱草(Elymus dahuricus)为研究材料,通过光学显微镜和透射电子显微镜对植株茎节间、叶鞘、叶片及种子进行观察,发现Epichloё内生真菌普遍存在于茎节间、叶鞘、叶片及种子中。菌丝体在4种禾草体内分布特点较为相似,茎节间菌丝体分布密集,叶鞘次之,叶片中则分布较为稀疏,均沿细胞伸长方向纵向生长,呈直线或弯曲状,细长无分支;对种子的观察发现,除在醉马草糊粉层内很难观察到菌丝体外,Epichloё内生真菌普遍存在于中华羊茅、野大麦及披碱草的糊粉层中,4种禾草的种皮及胚中均明显的观察到了菌丝体的存在。  相似文献   

不同猪苓菌核分离营养菌丝的研究   总被引：2，自引：0，他引：2  

陈永刚  邓百万  陈文强  彭浩  刘开辉  魏巍  刘飞 《安徽农业科学》2007,35(28):8840-8841

[目的]为了明确猪苓的种质资源,为其大面积栽培提供理论依据。[方法]采用组织培养法,分离秦巴山区3种猪苓营养菌丝。[结果]结果表明,在温度25~28℃、pH值自然的条件下,用CPDA培养基和蛋白胨培养基培养,不同猪苓菌核均能分离出营养菌丝。[结论]综合不同猪苓菌核分离营养菌丝的萌发时间和萌发率、菌丝密度和生长势等因素,发现CPDA培养基较适合作为分离培养基。  相似文献   

铬稳定同位素在丛枝菌根蒲公英中的分馏及根外菌丝对铬的吸收     

REN Bai-Hui  WU Song-Lin  CHEN Bao-Dong  WU Zhao-Xiang  ZHANG Xin 《土壤圈》2015,25(2):186-191

As common soil fungi that form symbioses with most terrestrial plants,arbuscular mycorrhizal(AM) fungi play an important role in plant adaptation to chromium(Cr) contamination.However,little information is available on the underlying mechanisms of AM symbiosis on plant Cr resistance.In this study,dandelion(Taraxacum platypecidum Diels.) was grown with and without inoculation of the AM fungus Rhizophagus irregularis and Cr uptake by extraradical mycelium(ERM) was investigated by a compartmented cultivation system using a Cr stable isotope tracer.The results indicated that AM symbiosis increased plant dry weights and P concentrations but decreased shoot Cr concentrations.Using the Cr stable isotope tracer technology,the work provided possible evidences of Cr uptake and transport by ERM,and confirmed the enhancement of root Cr stabilization by AM symbiosis.This study also indicated an enrichment of lighter Cr isotopes in shoots during Cr translocation from roots to shoots in mycorrhizal plants.  相似文献   

分根装置中接种AMF对12 mm土壤水稳性团聚体的影响     

彭思利  申鸿  袁俊吉  郭涛 《植物营养与肥料学报》2010,16(6):1546-1550

采用分根装置研究了丛枝菌根真菌侵染白三叶草（Trifolium repens）后对中性紫色土12 mm土壤水稳性团聚体（WSA1-2mm）含量的影响,并运用通径分析对其主要影响因子进行了量化比较。结果表明,接种Glomus intraradices、G. mosseae和G. etunicatum的菌根室土壤有机质、球囊霉素相关土壤蛋白（GRSP）含量均有增加的趋势; 接种3种菌种都显著增加了菌根室土壤WSA1-2mm含量。通径分析结果表明,菌丝密度对WSA1-2mm含量有较大的直接效应（直接通径系数 0.678）,而GRSP对WSA1-2mm的影响系数较小,既有直接效应又有间接效应,但以直接效应为主。菌丝和GRSP对12mm 土壤水稳性团聚体作用大小的差异可能源于二者作用机制的不同。  相似文献   

Underground communication of root hormones by common mycorrhizal network between trifoliate orange and white clover     

Qiang-Sheng Wu  Yi-Can Zhang  Ze-Zhi Zhang  Anoop Kumar Srivastava 《Archives of Agronomy and Soil Science》2017,63(9):1187-1197

Common mycorrhizal network (CMN) links up several coexisting plant individuals via underground root communication for resource sharing, while it is not known whether phytohormones participate in such communication. A two-chambered rootbox separated through 37-μm mesh was used to establish the CMN by Diversispora spurca between trifoliate orange (TO) and white clover (WC). After 20 weeks of inoculation, the CMN was established, as evident from high mycorrhizal buildup under supplier (mycorrhizal inoculation) TO–target (non-mycorrhizal inoculation) WC association. This CMN was eventually responsible for the significant increase in plant biomass of these associated plants. CMN decreased root abscisic acid (ABA) level in supplier and target plants, but increased root indole-3-acetic acid (IAA) level in supplier plant alone. CMN mediated significantly higher gibberellins (GAs) and zeatin riboside (ZR) concentration in roots of target plant, leaving supplier plant unaffected. Root ZR was bidirectionally transferred through the CMN. A higher root methyl jasmonate (MeJA) concentration was observed in supplier WC–target TO or supplier TO–supplier WC association, indicating an unidirectional communication from WC to TO. It suggested that except IAA, GAs, brassinosteroid (BR), and ABA, root MeJA and ZR were apparently involved in the underground communication by CMN.  相似文献   

A new Leptographium species from the roots of declining Pinus sylvestris in Switzerland          下载免费PDF全文

S. Marincowitz  T. A. Duong  U. Heiniger  B. D. Wingfield  M. J. Wingfield  Z. W. de Beer 《Forest Pathology》2017,47(4)

Scots pine (Pinus sylvestris) trees have been declining in the Rhône valley, Switzerland, for almost three decades. In an assessment of the role of fungi in this syndrome, the dominant fungus isolated from stained roots was a Leptographium species, morphologically similar to the asexual state of Grosmannia serpens. We examined isolates of this fungus based on DNA sequences of four protein‐coding genes including actin, β‐tubulin, calmodulin and translation elongation factor‐1 alpha. The results showed that they were of a distinct, undescribed taxon related to species in the Grosmannia serpens and G. wageneri complexes. The fungus, described here as Leptographium rhodanense sp. nov., resembles other species in the two species complexes morphologically, and most probably ecologically, as is suggested by the fact that it was isolated from stained pine roots.  相似文献   

不同药剂对平菇绿色木霉的防治研究     

张新燕  刘海光  邱广艳  杜秀艳  刘秀杰  王艳芝 《北方园艺》2012,(1):151-152

采用室内抑菌试验,测定6种药剂对绿色木霉和平菇菌丝的抑菌作用。结果表明:菇棚药效试验中,6种药剂的防治效果均达到92%以上,其中高效绿霉净WP 1 500倍液、100%克霉先锋WP 1 000倍液的防效最好,其校正防效达96%;室内杀菌及抑菌毒力筛选试验中,70%菌绝杀SP 1 000倍液、高效绿霉净WP 1 500倍液对绿色木霉具有较强的抑菌作用,且平菇菌丝生长浓密。  相似文献