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园艺学报 ›› 2026, Vol. 53 ›› Issue (1): 244-256.doi: 10.16420/j.issn.0513-353x.2024-0986

• 植物保护 • 上一篇    下一篇

蚕豆根腐病生防篮状菌的鉴定及其抗病促生作用

刘陈玮, 王凡, 卞晓春, 徐仁超, 陆红臣, 吴春芳*()   

  1. 江苏沿江地区农业科学研究所南通市作物春化技术重点实验室, 江苏南通 226012
  • 收稿日期:2025-09-08 修回日期:2025-10-23 出版日期:2026-01-25 发布日期:2026-01-26
  • 通讯作者:
    *E-mail:
  • 基金资助:
    江苏省种业揭榜挂帅项目(JBGS[2021]058); 江苏现代农业产业技术体系建设项目(JATS[2023]158)

Identification of Talaromyces Against Broad Bean Root Rot and Its Disease-Resistant and Growth-Promoting Effects

LIU Chenwei, WANG Fan, BIAN Xiaochun, XU Renchao, LU Hongchen, WU Chunfang*()   

  1. Key Laboratory of Crop Vernalization Technology of Nantong CityJiangsu Yanjiang Institute of Agricultural Sciences,Nantong, Jiangsu 226012, China
  • Received:2025-09-08 Revised:2025-10-23 Published:2026-01-25 Online:2026-01-26

摘要:

根腐病是危害蚕豆的主要病害之一,严重制约了蚕豆产业的发展。为获得优异的蚕豆根腐病生防菌资源,以根腐病病原菌藤仓镰刀菌(Fusarium fujikuroi)和尖孢镰刀菌(Fusarium oxysporum)为指示菌,从江苏省如皋市土壤样品中筛选出拮抗性较强的真菌,并根据形态学和分子生物学进行鉴定,初步探究其抑菌机理、抗病和促生作用。试验表明,分离获得的菌株VRB1和VRB36对两株镰刀菌表现出显著的拮抗作用,抑制率均高于81.00%。经鉴定菌株VRB1为产紫篮状菌(Talaromyces purpureogenus),VRB36为嗜松篮状菌(Talaromyces pinophilus)。VRB1和VRB36均具备产蛋白酶和淀粉酶的能力,并具备溶磷、固氮和产铁载体的能力,VRB1还具有产氢氰酸(HCN)的能力。两株篮状菌的无菌滤液对病原菌镰刀菌的菌丝生长和孢子萌发均具有显著的抑制作用,且影响细胞膜透性。盆栽试验结果表明,两株篮状菌均可防治蚕豆根腐病,防治效率分别达71.31%和56.92%,并且对蚕豆幼苗的株高、根长和鲜/干质量有显著的促进作用。综上,两株篮状菌具备开发成蚕豆根腐病生防制剂的潜力。

关键词: 蚕豆, 根腐病, 篮状菌, 生防特性, 防治效果, 促生作用

Abstract:

Root rot is one of the primary diseases affecting broad bean,severely limiting the development of the broad bean industry. To acquire effective biocontrol fungal resources for broad bean root rot,root rot pathogens Fusarium fujikuroi and Fusarium oxysporum were selected as indicator fungi,screening fungi with strong antifungal activity from soil samples in Rugao City,Jiangsu Province. The morphological and molecular biological technology were used to identified the screened fungi. The antifungal mechanisms was preliminarily investigated,and the greenhouse pot test was performed to analyze its disease resistance and growth promoting effects. The results indicated that the isolated strains VRB1 and VRB36 exhibited significant antifungal activities against the two Fusarium,with inhibition rates exceeding 81.00%. Strain VRB1 was identified as Talaromyces purpurogenus,while VRB36 was identified as Talaromyces pinophilus. Both biocontrol fungi VRB1 and VRB36 have the ability to secrete enzymes such as protease and amylase. They have the ability to dissolve organic phosphorus,fix nitrogen and produce iron carrier. StrainVRB1 also has the ability to produce HCN. The sterile filtrate of the two Talaromyces significantly inhibited mycelial growth and spore germination of Fusarium,and affected the permeability of cell membrane. Greenhouse pot experiment showed that two Talaromyces could control the occurrence of broad bean root rot,with control efficiency of 71.31% and 56.92%,respectively. Furthermore,they significantly promoted the plant height,root length and fresh and dry weight of broad bean seedlings. These two Talaromyces have the potential to be developed as biocontrol agent against broad bean root rot.

Key words: broad bean, root rot, Talaromyces, biocontrol characteristics, control efficacy, growth promothing effect