Institute of Mycology and Plant Pathology, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan.
Nat Prod Res. 2009;23(16):1541-51. doi: 10.1080/14786410902726167.
In the present study, herbicidal activity of culture filtrates of nine phytopathogenic fungi, namely, Alternaria alternata (Fr.) Keissl., Drechslera australiensis (Bugnicourt) Subramanian & Jain, Drechslera hawaiiensis (Curtis and Cooke) Shoemaker, Drechslera biseptata (Saccardo & Roumeguere) Richardson & Fraser., Drechslera rostrata (Drechsler) Ricardson & Fraser, Fusarium oxysporum (Massey) Synd. & Hans., Fusarium solani (Martius) Saccardo., Monilia stophila (Montagne) and Cladosporium sp. (Grey) de Hoff, was evaluated against parthenium weed (Parthenium hysterophorus L.). In laboratory bioassays, the effect of original (100%) as well as lower concentrations (75, 50 and 25%) of these cultural filtrates was studied on germination and early seedling growth of parthenium. Cultural filtrates of different concentrations of A. alternata, Cladosporium sp. and D. rostrata significantly suppressed the germination of parthenium seeds by 70-90, 13-73 and 27-50%, respectively. Cultural filtrates of these fungi also exhibited pronounced adverse effects on the seedling root and shoot growth. Among other fungal species, cultural filtrates of D. australiensis, D. hawaiiensis, F. oxysprium and F. solani significantly reduced the root and shoot length of parthenium seedlings. Foliar spray bioassay was performed using cultural filtrates of three fungal species, namely A. alternata, F. solani and D. rostrata. In this bioassay, three sprays of fungal cultural filtrates, with 4 day intervals each, were carried out on 1 and 2 week-old pot-grown seedlings of parthenium. Cultural filtrates of all the three fungal species markedly suppressed root and shoot growth of parthenium weed.
在本研究中，评估了 9 种植物病原菌真菌的培养液滤液的除草活性，分别为链格孢菌（Alternaria alternata (Fr.) Keissl.）、澳大利亚德雷克斯勒菌（Drechslera australiensis (Bugnicourt) Subramanian & Jain）、夏威夷德雷克斯勒菌（Drechslera hawaiiensis (Curtis and Cooke) Shoemaker）、二歧德雷克斯勒菌（Drechslera biseptata (Saccardo & Roumeguere) Richardson & Fraser.）、喙状德雷克斯勒菌（Drechslera rostrata (Drechsler) Ricardson & Fraser）、尖孢镰刀菌（Fusarium oxysporum (Massey) Synd. & Hans.）、腐皮镰刀菌（Fusarium solani (Martius) Saccardo.）、密丝单端孢（Monilia stophila (Montagne)）和灰葡萄孢（Cladosporium sp. (Grey) de Hoff）。在实验室生物测定中，研究了原始（100%）和较低浓度（75%、50%和 25%）这些培养液滤液对豚草种子萌发和早期幼苗生长的影响。不同浓度的链格孢菌、灰葡萄孢和喙状德雷克斯勒菌培养液滤液显著抑制了豚草种子的萌发，抑制率分别为 70-90%、13-73%和 27-50%。这些真菌的培养液滤液还对幼苗的根和茎生长表现出明显的不利影响。在其他真菌种中，澳大利亚德雷克斯勒菌、夏威夷德雷克斯勒菌、尖孢镰刀菌和腐皮镰刀菌的培养液滤液显著降低了豚草幼苗的根和茎长度。使用三种真菌物种的培养液滤液（链格孢菌、腐皮镰刀菌和喙状德雷克斯勒菌）进行了叶面喷雾生物测定。在这项生物测定中，在 1 周和 2 周龄的盆栽豚草幼苗上，每隔 4 天进行三次真菌培养液滤液喷雾。三种真菌的培养液滤液都明显抑制了豚草杂草的根和茎生长。
