Pigmented naphthoquinone derivatives of shikonin are produced at specific times and in specific cells of Lithospermum erythrorhizon roots. Normal pigment development is limited to root hairs and root border cells in hairy roots grown on "noninducing" medium, whereas induction of additional pigment production by abiotic (CuSO4) or biotic (fungal elicitor) factors increases the amount of total pi...

HomePlant DiseaseVol. 105, No. 7First Report of Crown and Root Rot Caused by Pythium aphanidermatum on Tomato in Italy PreviousNext DISEASE NOTE OPENOpen Access licenseFirst ItalyG. Gilardi, G. Tabone, V. Guarnaccia, A. Garibaldi, M. L. GullinoG. GilardiCentre Competence for Innovation the Agro-Environmental Sector (AGROINNOVA), University Torino, 10095 Grugliasco, ItalySearch more papers this ...

The efficacy of clean fallow, bermudagrass (Cynodon dactylon) as a rotational crop, and fenamiphos for control of root-knot nematode (Meloidogyne incognita race 1) and soilborne fungi in okra (Hibiscus esculentus), snapbean (Phaseolus vulgaris), and pepper (Capsicum annuum) production was evaluated in field tests from 1993 to 1995. Numbers of M. incognita in the soil and root-gall indices were ...