The Main Diseases and Control Measures of Panax notoginseng(Burk) F. H. Chen in Wuzhou City

The main symptoms of root rot,anthracnose,blight and damping-off of Panax notoginseng( Burk) F. H. Chen are introduced in the paper,and the corresponding control measures are elaborated from the aspects of agricultural management measures,seed disinfection,seedbed treatment and chemical control.

Anti-tumor Activity of Derivatives of Protopanaxadiol Prepared with Acid Anhydrides

[Objectives]This paper aimed to prepare derivatives of protopanaxadiol from Panax notoginseng(Burk.)FH Chen with acid anhydrides and study their anti-tumor activity.[Methods]The 3-hydroxyl group of protopanaxadiol was subjected to structural modification and reacted with acid anhydrides to prepare derivatives,in order to improve the anti-tumor activity of protopanaxadiol.None of the five compounds designed and synthesized had been reported in the literature,and they were novel compounds.The anti-tumor activity of the derivatives was studies using MTS method.Taking cisplatin and paclitaxel as positive control drugs,the bioactivity of the compounds 1-5 on anti-tumor cell lines(HL-60 cells,SMMC-7721 cells,A-549 cells,MCF-7 cells and SW480 cells)in vitro was screened.[Results]The compound 5 showed inhibitory effect on HL-60 cells,SMMC-7721 cells and A-549 cells.[Conclusions]The acid anhydride esterification method is simple to operate and easy to control.This study has reference value for the structural modification and anti-tumor activity research of protopanaxadiol from P.notoginseng(Burk.)FH Chen.

三七与西洋参种间杂交F1代无性系SSR分子标记及倍性鉴定

目的:通过SSR分子标记技术及流式细胞术对三七Panax notoginseng(Burk.)F.H.Chen与西洋参Panax quinquefolium L.杂交F1代杂种进行真实性鉴定。方法:设计、筛选引物,对随机选取的60份杂交F1代无性系幼苗进行SSR分子鉴定;裂解样品细胞,利用流式细胞仪对60份样品进行倍性分析。结果:筛选出Q2、Q5两条引物可用于三七与西洋参杂交F1代的鉴定,在60份样品中,共有39份具有双亲互补条带;利用流式细胞仪对相同的60份样品进行检测,三倍体样品数为39份,表现为双亲互补条带的样品倍性检测结果均为三倍体,可认定为真杂种。结论:杂交F1代的真实杂种率为65%,SSR分析与倍性检测结果相互印证,证实了鉴定结果的可靠性。

Loss of Genetic Diversity of Domesticated Panax notoginseng F H Chen as Evidenced by ITS Sequence and AFLP Polymorphism： A Comparative Study with P. stipuleanatus H T Tsai et K M Feng

In the present study, we evaluated the genetic diversity of Panax notoginseng F H Chen, a domesticated species, and P. stipuleanatus H T Tsai et K M Feng, an endangered wild species in southeastern Yunnan and adjacent areas in Vietnam, using sequences of the internal transcribed spacer (ITS) regions of nuclear ribosomal DNA and amplified fragment length polymorphism (AFLP) markers. Twenty-four accessions from three plantations of P. notoginseng and 51 samples from eight populations of P. stipuleanatus were assayed. A total of 694 bp of partial sequences of 18S, ITS 1, 5.8S, ITS2, and partial sequences of 26S were obtained. No sequence variation was detected within P. notoginseng and nine sites (1.30%) were variable in P. stipuleanatus. Two-thirds of the variable sites were found between Langqiao and other populations. In P. notoginseng, four pairs of AFLP primer combinations generated 312 bands, of which 240 (76.9%) were polymorphic and 60.15% of the polymorphisms were harbored within plantations. Approximately 41.0% and 66.9% of bands were polymorphic in population D7 and 5589, respectively. In P.stipuleanatus, the same four primer combinations produced 346 bands, of which 334 (96.5%) were polymorphic and approximately 62.14% of polymorphisms were maintained within populations. Considerable variations were observed. The percentage of polymorphic bands ranged from 50.2% to 84.9% and the average over populations was 70.9%. Cluster analysis did not show correlation of genetic differentiation with the distinctive leaf morphology of P. stipuleanatus (i.e. one form with bipinnatifid leaflets and the other with undivided leaflets). Because over 40% of genetic variations were maintained among populations and because of the very restricted distribution of P. stipuleanatus, all natural populations of this species should be conserved in situ. Considering that there are variations in P. notoginseng within and among plantations, we suggest establishing a genetic resource conservation garden or reintroducing P. notoginseng into its native habitats in southwestern China. Such reintroduction should be carefully executed after large-scale screening of genetic variation within the species.

HPLC法测定三七不同药用部位中有效成分含量

目的:建立三七不同药用部位中三七皂苷R_1、人参皂苷Rg_1、Re和Rb_1的HPLC含量测定方法,比较三七不同药用部位中4种皂苷的含量。方法:三七不同药用部位(主根、筋条、剪口、叶、花)甲醇提取,RP-HPLC/UV法测定,Kromasil C_(18)(250 mm×4.6 mm,5μm)色谱柱;以乙腈和水(v/v)梯度洗脱;流速:1 mL/min;柱温:25℃;检测波长:203 nm;进样量:10μL。结果:三七皂苷R_1、人参皂苷Rg_1、Re和Rb_1可达到基线分离;三七皂苷R_1、人参皂苷Rg_1、Re和Rb_1的线性范围分别为:4.4～440μg/mL,4.32～1080μg/mL,4.24～212μg/mL和4.48～1120μg/mL;4种皂苷的精密度和日间差RSD(n=5)分别为0.46%,0.24%,0.77%,0.68%和1.64%,0.69%,0.52%,0.65%;加样回收率(n=5)分别为(102.93±1.22)%,(103.18±0.49)%,(103.20±1.58)%,(103.86±0.39)%;三七不同药用部位含上述4种皂苷总量的顺序为剪口>主根>筋条>花>叶;而三七主根含上述4种皂苷总量的顺序为80头>60头>20头>40头>100头。结论:本方法简便、灵敏、准确、重现性良好,可用于分析三七不同药用部位中上述4种皂苷的含量。

HPLC法测定人参、西洋参和三七不同部位中人参皂苷的含量

目的:为了探讨人参、西洋参和三七中人参皂苷的资源含量,以确保人参、西洋参和三七中人参皂苷资源充分被利用,为开发以人参皂苷为主的创新药物提供科学数据。方法:采用高效液相色谱法对人参、西洋参和三七不同部位中人参皂苷的含量进行测定。色谱条件为:Agilent 1100 Series 高效液相色谱仪;色谱柱为德国 Nucleosil-C_(18)(4.6 mm×150 mm,5μm);流动相为水-乙腈梯度洗脱,流速1.5 mL·min^(-1);A为水,B为乙腈;梯度洗脱程序为:0～16 min,56%B;16～20 min,56%→100%B;20～38 min,100%B;38～45 min,100%→56%B;45～60 min,56%B;60～70 min,56%B。所有组分均70 min 内出完。检测波长203 nm,柱温35℃,灵敏度为0.02AUFS。线性关系考察r=0.9994;精密度试验 RSD=0.26%,平均回收率为99.88%,重现性试验 RSD=2.0%,分离度为R=3.042。结果:人参须根含有较高的人参皂苷 Rb_1(1.082%),人参茎叶则含有较高的人参皂苷 Rc(1.002%)、Re(3.430%)和 Rg_1(1.303%);西洋参根含有较高的人参皂苷 Rb_1(2.213%)和 Re(0.9188%),西洋参芦头中含有较高的人参皂苷 Rb_1(2.840%)和Re(1.224%);三七根含有较高的人参皂苷 Rb_1(2.163%)和 Rg_1(2.633%),三七芦头中含有较高的人参皂苷 Rb_1(4.376%)和 Rg_1(4.145%)。结论:高效液相色谱法分离、分析人参皂苷效果好、准确、迅速、简便,也可作为评价人参属植物质量的有效分析方法。建议对人参、西洋参和三七中含量较高的人参皂苷进行提取分离,直接用于创新药物的开发。

HPLC法同时测定三七总皂苷中人参皂苷Rg_1与Rb_1的含量

目的 建立 HPL C同时测定三七总皂苷中人参皂苷 Rg1 与 Rb1 的方法。方法 采用 HPL C法 ,以茶碱为内标 ,氨基键合相为固定相 ,流动相为乙腈 -水 (80∶ 2 0 ) ,检测波长 2 0 3nm。结果 三七总皂苷中人参皂苷 Rg1 和 Rb1与其他成分分离良好 ,保留时间分别约为 5 .7和 2 1.5 min。人参皂苷 Rg1 在 80～ 2 80μg/ m L (r=0 .9995 ) ,Rb1 在80～ 2 4 0 μg/ m L(r=0 .9993)线性关系良好 ,Rg1 和 Rb1 加样回收率分别为 97.1%和 98.4 %,RSD分别为 2 .4 4 %和 2 .35 %(n=9)。结论 本法操作简便 ,准确 ,重现性好 ,可用于人参及三七的质量控制。

促渗剂对三七中人参皂苷Rh_1体外透皮的影响

目的研究三七中人参皂苷Rh1的理化性质及其体外透皮性能。方法采用摇瓶法测定人参皂苷Rh1的表观溶解度和油/水分配系数;采用体外扩散池法测定小鼠皮和猪皮对Rh1体外经皮渗透系数以及对不同促渗剂和质量浓度对其体外经皮促渗效果;并采用高效液相色谱法对人参皂苷Rh1进行分析。结果人参皂苷Rh1的表观溶解度为(60.70±3.21)μg/mL,其油水分配系数lgP值为2.49±0.04,人参皂苷Rh1在小鼠皮上的经皮吸收性能强于猪皮,促渗剂对人参皂苷Rh1的透皮能力大小为:5%N-甲基-2-吡咯烷酮(NMP)>5%丙二醇(PG)>5%氮酮(AZ)>5%油酸(OA);不同质量浓度的促渗剂促渗能力大小为1%NMP>3%NMP>5%NMP和1%PG>3%PG>5%PG。结论人参皂苷Rh1在小鼠皮肤上具有更强通透性,且1%NMP和1%PG可作为人参皂苷Rh1经皮吸收的促渗剂。

人参炔醇对HL-60细胞体外诱导分化作用的研究

目的 通过细胞形态学和增殖动力学研究人参炔醇对 HL-60细胞诱导分化作用。方法 采用台盼蓝染色及细胞计数器测定细胞存活量 ,流式细胞仪检测人参炔醇对细胞周期和分子标志表达的影响 ,观察信号通路阻断剂对人参炔醇诱导细胞分化的影响。结果 人参炔醇使 HL-60细胞倍增时间延长 ,诱导 HL-60向单核细胞分化 ,细胞集中于 G1 期 ,显著上调细胞表面 CD14分子表达 ,并中度上调 CD11b分子表达 ,Rpc AMPS及 H7均可使人参炔醇诱导的 HL-60细胞 NBT阳性率降低。结论 人参炔醇诱导 HL-60向单核细胞分化 ,与细胞内腺苷酸环化酶(c AMP) ,蛋白激酶 C(PKC)信号通路活化有关。

HPLC法同时测定生三七和蒸制三七中10种皂苷类成分的含量

目的：建立生三七和蒸制三七中三七皂苷R1和人参皂苷Rg1、Re、Rh1、Rb1、Rd、Rk3、Rh4、20（S）-Rg3、20（R）-Rg310种皂苷类成分的HPLC测定方法。方法：采用Vision HT C18（250 mm×4.6 mm,5μm）色谱柱;乙腈-水梯度洗脱,检测波长203 nm,流速1.2 m L/min,柱温20℃。结果：三七皂苷R1和人参皂苷Rg1、Re、Rh1、Rb1、Rd、Rk3、Rh4、20（S）-Rg3、20（R）-Rg3的线性关系良好（r〉0.9995）;10种皂苷类成分的平均加样回收率为95.93%～102.54%。结论：该方法准确,重现性好,可用于生三七和蒸制三七中皂苷类成分的含量测定和质量控制,为三七“生打熟补”与物质变化之间的相关性研究提供了依据。

pH对三七块根花色苷颜色呈现和降解的效应(英文)

用分光光度法在体外研究了pH对三七块根花色苷呈色和降解的效应，结果表明：该花色苷在可见光区的吸收光谱和降解速率均具独特的pH依赖性。在pH2．0，该花色苷呈现最强烈的红色。随着pH从0增加到13．0，该花色苷在可见光区的最大吸收波长（λvis max）依次出现红移、蓝移，然后消失，在可见光区最大吸收波长处的吸光值（Aλvis max）呈现为一条单峰曲线，唯一的峰在pH2．0处。当原始pH值被恢复到2．0后，如果原始pH值≤6．0，花色苷的红色均被恢复得更浓烈，λvis max不同程度地趋向532nm，A州…。增加；如果原始pH值I〉7．0，花色苷的红色根本不能被恢复，λvis max几乎不变，Aλvis max仍然维持低水平。在15℃，黑暗中，该花色苷在pH0～6．0条件下均随时间而降解，在pH2．0时的降解速度最慢，当pH≤3．0时，该花色苷在总体上降解缓慢；此外，该花色苷的降解过程几乎符合一级反应动力学。本文可为三七块根颜色呈现的机理探索及其色素的开发、利用提供参考。

津岛链霉菌JT-2F对三七根腐病菌的抑制作用

【目的】明确津岛链霉菌JT-2F对三七根腐病菌的抑制作用,为三七根腐病的生物防治提供理论依据。【方法】采用平板拮抗和滤纸条法测定津岛链霉菌(Streptomyces tsukiyonensis)菌株JT-2F对三七根腐病菌和3种三七叶部病害病原菌的的抑制作用,并采用离体块根刺伤接种法测定菌株JT-2F对三七根腐病菌的防治效果;利用酶联免疫分析(ELISA)法测定菌株JT-2F发酵液中蛋白酶、纤维素酶和几丁质酶等酶活性。【结果】菌株JT-2F对三七根腐病菌具有较强的拮抗作用,其抑菌率达76.47%,对3种三七叶部病害病原菌也有明显的抑制效果,抑菌率均超过80.00%。菌株JT-2F的发酵液对病原菌菌丝有明显的抑制作用,使菌丝体畸形、膨大变粗,并呈串珠形状。产酶能力测定结果显示,菌株JT-2F可分泌几丁质酶、蛋白酶和纤维素酶,可破坏病原菌菌丝体,并抑制病原菌生长。离体防效试验结果显示,菌株JT-2F发酵原液对离体三七块根根腐病的防效达78.43%。【结论】津岛链霉菌菌株JT-2F对三七根腐病菌有较好的抑制作用,具有较好的生防开发潜力。

不同浓度的磷酸盐缓冲液(pH7.4)对血塞通注射液稳定性的影响

目的:探讨不同浓度的磷酸盐缓冲液(pH7.4)对血塞通注射液稳定性的影响。方法:配制不同浓度磷酸盐缓冲液(pH7.4)的血塞通注射液,80℃加热12天,测定加热第0,1,2,3,4,5,6,7,8,9,10,11和12天注射液中R1、Rg1和Rb1的含量。结果:5%的磷酸盐缓冲液(pH7.4)是维持血塞通注射液稳定的最低浓度。结论:加入浓度大于5%的磷酸盐缓冲液(pH7.4)能有效提高血塞通注射液的稳定性。

三七HPLC指纹图谱及5种成分测定

目的 建立三七HPLC指纹图谱,并测定5种成分的含有量.方法 三七70%甲醇提取物的分析采用Waters XBridge C18色谱柱(4.6 mm×250 mm,5μm);流动相乙腈-水,梯度洗脱;体积流量1.5 mL/min;柱温25℃;检测波长203 nm.结果 15批样品指纹图谱中有5个共有峰,相似度均大于0.99.三七皂苷R1、人参皂苷Rg1、人参皂苷Re、人参皂苷Rb1和人参皂苷Rd分别在0.000 76~0.567 64(r=0.9999)、0.002 69~2.017 43 (r=0.9998)、0.000 38~0.283 82 (r=1.000 0)、0.002 83~2.12483 (r=0.999 8)、0.000 78~0.582 98 mg/mL (r=0.999 8)范围内线性关系良好,平均加样回收率分别为101.78%、97.22%、102.14%、98.96%、101.73%,RSD分别为1.58%、1.31%、2.17%、1.55%、1.80%.结论 该方法简便、快速、准确,可用于三七的质量控制.

三七丛枝菌根真菌(AMF)和深色有隔内生真菌(DSE)定殖调查及与皂苷含量相关性分析

目的:调查云南文山4个样地三七内生真菌——丛枝菌根真菌(AMF)和深色有隔内生真菌(DSE)多样性,明确AMF、DSE定殖率与三七皂苷含量之间的相关性,为三七生态种植提供理论支持和实验依据。方法:采用碱解离-酸性品红染色法,统计AMF、DSE及其典型结构在三七根部的定殖率,并对其典型形态结构进行拍照分析;采用高效液相色谱法测定三七总皂苷及单体皂苷含量;通过SPSS 21.0分析AMF、DSE及其典型结构定殖率与人参皂苷Rb1、Rg1、三七皂苷R1和总皂苷之间的相关性。结果:AMF、DSE平均定殖率范围分别为25.18%~32.01%,29.25%~37.58%。相关性分析显示,三七皂苷R1与AMF定殖率及典型结构之间呈极显著正相关;DSE定殖率及典型结构与各三七皂苷之间的相关性与AMF基本一致。结论:AMF、DSE在4个样地中均有着较高的定殖率,与三七皂苷R1含量呈显著或极显著正相关。

Box-Behnken设计优化熟三七皂苷类成分提取工艺

目的:采用单因素试验结合Box-Behnken设计优化熟三七中皂苷类成分的提取工艺。方法:在单因素试验的基础上,利用Box-Behnken中心组合设计,以皂苷类成分含量和干膏率的总评归一值(OD)为评价指标,对提取时间、溶剂倍数、醇提浓度、提取次数等4个主要影响因素进行考察,并结合效应面法进行工艺优化。结果:经优化确定最佳提取工艺为:取熟三七粉末适量,加入16倍量70%乙醇溶液,提取3次,每次2.5 h。该工艺条件所得实测值与理论值基本一致,偏差较小。结论:通过实验建立的响应面模型与真实情况拟合良好,能较好的预测熟三七中皂苷类成分含量及干膏率等指标,该方法具有一定的实用价值。

Identification and quality analysis of Panax notoginseng and Panax vietnamensis var.fuscidicus through integrated DNA barcoding and HPLC

Objective：Root or rhizome of Panax notoginseng（Sanqi）is known for its eutherapeutic effects.Panax vietnamensis var.fuscidicus,called Yesanqi or Yuenan sanqi by local residents,is also commercially available.They are similar in morphology,leading to serious safety problems in clinical medication.It is necessary to find the rapid and efficient methods to identify them.Methods：P.notoginseng and P.vietnamensis var.fuscidicus were identified by DNA barcoding based on the ITS2 sequence.Notoginsenoside R1 and ginsenosides（Rb1,Rg1,Re,Rd,Rc,and Rb2）were analyzed in the roots,fibrils,stems,leaves,and flowers of P.notoginseng and P.vietnamensis var.fuscidicus using high-performance liquid chromatography（HPLC）.Results：P.notoginseng and P.vietnamensis var.fuscidicus were separated into branches of divergent clusters,and P.vietnamensis var.fuscidicus and Panax vietnamensis were clustered into a clade with 98%similarity according to DNA barcoding analysis.The chemical compositions of P.notoginseng and P.vietnamensis var.fuscidicus were similar in roots;while their compositions and contents of notoginsenoside R1 and ginsenosides in flowers,leaves,stems,and fibrils were different.Conclusion：ITS2 is a rapid and efficient method to identify P.notoginseng and P.vietnamensis var.fuscidicus.HPLC analysis indicated that pharmacological action might be different between P.notoginseng and P.vietnamensis var.fuscidicus.

Process performance and quality attributes of temperature and step-down relative humidity controlled hot air drying of Panax notoginseng roots

The effects of temperature and step-down relative humidity controlled hot-air drying(THC-HAD)on the drying kinetics,energy efficiency and quality,i.e.,rehydration ratio(RR),color parameters(L*,a*,b*),total color difference(ΔE*),Panax notoginseng saponins(PNS)content,and ginsenosides content(R1,Rg1,Re,Rd,Rb1)of Panax notoginseng roots were evaluated.The drying time was significantly affected by the drying temperature followed by the relative humidity(RH)of the drying air.Special combination of drying conditions,i.e.,drying temperature of 50°C,relative humidity of 40%for 3 h and then continuous dehumidification from 40%to 8%allowed to shorten the drying time by 25%compared to drying at the same temperature and continuous dehumidification.The longer was the drying time under constant high RH of drying air,the lower was the RR of dried samples.The step-down RH strategy contributed to the formation of a porous structure,enhancement of drying efficiency and quality improvement.Generally,the ginsenosides content increased with the increase in temperature,while no obvious trend was recorded for ginsenoside R1.The contents of the ginsenoside R1,Rg1,Rb1 and PNS decreased with the increase in the drying time under constant high RH.Taking into account the drying time,energy consumption and quality attributes,drying at the temperature of 50°C,constant RH of 40%for 3 h and then step-down RH from 40%to 8%was proposed as the most favorable combination of drying conditions for dehydration of whole Panax notoginseng roots.

Effects of combined infrared and hot-air drying on ginsenosides and drying characteristics of Panax notoginseng(Araliaceae)roots

Exploring new drying technology can help to deal with the challenge of better preservation of rhizome medicinal materials in the traditional Chinese medicine industry.In current work,combined infrared and hot-air drying(IR-HAD)was employed to Panax notoginseng roots and its effect on drying kinetics,energy efficiency and quality,i.e.,rehydration ratio(RR),color parameters(L^(*),a^(*),b^(*)),total color difference(ΔE),Panax notoginseng saponins(PNS)content,and ginsenosides content(R_(1),R^(g1),R_(e),R_(d),R_(b1))were evaluated.Hot air drying(HAD)was used as the control.Results showed that the increase in drying temperature significantly shortened drying time and reduced energy consumption.The shortest drying time of 43.0 h and lowest specific energy consumption of 15.9 kW·h/(kg-water)were obtained by IR-HAD at 55°C.The decrease of radiation distance and the increase of radiation power led to the shortening of drying time.However,high drying temperature resulted in largeΔE values,large collapse structure,and RR of samples.The drying time of Panax notoginseng roots dried by IR-HAD at a drying temperature of 50°C was shorter(15.5%)than HAD dried at the same drying temperature.The contents of R_(1),R_(g1),R_(e),R_(b1),and PNS were higher when the samples were dried by IR-HAD than those dried by HAD at the same temperature of 50°C.Moreover,the IR-HAD dried samples shortened 15.5%drying time and saved 22.1%energy consumption compared with HAD.Therefore,the optimal process condition was Panax notoginseng roots under IR-HAD at drying temperature of 50°C,radiation distance of 12 cm and radiation power of 1350 W,which can shorten drying time,maintain high ginsenosides contents and satisfactory apparent qualities.

三七叶际微生物的分离鉴定及生防功能研究

【目的】从三七叶际分离筛选对三七叶部黑斑病病原菌具有较强抑制效果的生防菌株,为开发安全高效的生防菌剂提供菌种资源,也为中药材病害的生态防控提供新思路。【方法】采用连续稀释法从1年生健康三七叶片中分离可培养叶际微生物,通过平板对峙法测定分离菌株对三七叶部黑斑病菌人参链格孢菌(Alternaria panax)菌株SL17的拮抗效果,筛选对人参链格孢菌具有生防作用的叶际微生物菌株,结合ITS和16S rDNA测序对活性菌株进行分类鉴定,挑选抑菌效果最佳的菌株进一步进行广谱抑菌能力测定。【结果】从健康三七叶际共分离纯化得到125株分离物,通过平板对峙法从中筛选获得50株对人参链格孢菌具有明显抑制效果的拮抗菌株,其中26株为真菌,24株为细菌。26株拮抗真菌中,2株三七叶内生真菌菌株NZ-14和NZ-23的抑菌效果最佳,其中康氏木霉菌(Trichoderma koningii)菌株NZ-14可完全抑制人参链格孢菌菌丝生长,抑制率达100.00%;24株拮抗细菌中,2株三七叶内生细菌菌株NX-20和NX-23的抑菌效果最佳,其中枯草芽孢杆菌(Bacillussubtilis)菌株NX-20对人参链格孢菌的抑制率达71.13%。叶际拮抗菌对三七主要病原菌抑制活性测定结果显示,菌株NZ-14、NZ-23、NX-20和NX-23对槭菌刺孢菌(Mycocentrospora acerina)菌株DMS5、茄腐镰刀菌(Fusarium solani)菌株F3、锈腐菌(Cylindrocarpon destructans)菌株RS006均具有良好的抑制能力,抑制率为39.26%~78.97%。【结论】三七叶际存在大量具有潜在抑菌能力的微生物,其中2株木霉菌菌株NZ-14、NZ-23和2株芽孢杆菌菌株NX-20、NX-23的抑制效果最好,对三七叶部和根部主要病害病原菌均有较强的抑制作用,可作为三七病害生物防控的微生物资源。