Lichens are symbiotic organisms that composed of fungal partners and photosynthetic algal partners. During the process in lichen thallus, fungus synthesizes certain secondary metabolites which lecanoric acid is very important terms antibiotic properties. Considering vital importance acid, present study aimed to produce from thallus Parmotrema austrosinense using Modified Bold’s basal salt mediu...

Black root rot of pansy (Viola × wittrockiana Gams ex Kappert) is caused by Thielaviopsis basicola (Berk. & Broome) Ferraris. The synanamorph of T. basicola is Chalara elegans Nag Raj & Kendrick. Black root rot and Thielaviopsis root rot are common names used for disease caused by the same pathogen on multiple ornamental and agricultural crops (14,16). The macroscopic appearance of the disease ...

Alfalfa Fusarium Root Rot (AFRR) is a serious soil-borne disease with complex pathogenicity. Diseased samples suspected of AFRR were collected from Hohhot, Ordos, Hulunbeier, Chifeng, and Bayannur in Inner Mongolia, China, leading to 317 isolates. The isolates identified as acuminatum, F. solani, equiseti, incarnatum, oxysporum, avenaceum, verticillioides, proliferatum, falciforme, tricinctum, ...

A split-root technique was used to examine the interaction between Pratylenchus penetrans and the cortical root-rotting pathogen Rhizoctonia fragariae in strawberry black root rot. Plants inoculated with both pathogens on the same half of a split-root crown had greater levels of root rot than plants inoculated separately or with either pathogen alone. Isolation of R. fragariae from field-grown ...

© 2012 Omorusi, licensee InTech. This is an open access chapter distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Effects of White Root Rot Disease on Hevea brasiliensis (Muell. Arg.) – Challenges and Cont...