With Contributions by L .Brown, W.H.Barry , D.Charlemagne, E. Erdmann, A . A . L.Fox, U.Fricke, W.H.van Gilst, T.Godfraind, K.Greeff, M.Heller , Κ.-Ο. Haustein, G. Isenberg, R.Jacob, T.Kazazoglou, D . K i m , K.Kochsiek, J .M.Koomen, W.Krawietz, M.Lazdunski, L.G.Lelievre, H.Lül lmann, P.Mansicr, E.Noack, D.Noble, D.Palm, Th.Peters, H.-H.Pri l lwitz , J.F.Renaud, B.Rossi, J . A . M . Schevers, T...

Our findings suggest that i) phytotoxic materials can be isolated from Bursaphelenchus xylophilus-infected Scots pine, but not from noninfected pines; ii) the phytotoxins cause wilting of 45-day-old and 2-year-old pine seedlings in a dose and species dependent manner; iii) the phytotoxins are produced early in the infection, accumulate or increase with time, and may function to suppress water t...

Water stress applied to the plant shoot through enhanced evaporative demands reduced cytokinin activity in extracts of xylem exudate and leaves. This reduction resembled the changes in cytokinin activity caused by water stress applied to the root. Cytokinin activity in detached wilting leaves decreased rapidly. Recovery took place after several hours in a humid chamber. Experiments with (14)C-k...

Severe root rot was observed in fields of cabbages (Brassica oleracea L.) in 2015 in China. Cardinal symptoms of this disease included root rot and wilting leaves. A fungus was isolated from diseased tissues consistently. Based on the morphological features and molecular analysis of the ITS-5.8S rDNA and D1/D2 domain of the 28S rRNA gene, it was identified as Plectosphaerella cucumerina. This i...

Floriculture crops can lose their aesthetic quality due to water deficit during postproduction. Calcium is a secondary messenger in plant stress signaling, and the treatment of calcium has been proposed alleviate damage by various abiotic stresses. The objective this research was evaluate application methods delay wilting under deficiency three species bedding plants: viola (Viola cornuta), imp...

Levels of (+)-abscisic acid present in the long-day plant spinach (Spinacia oleracea L., cv. Savoy Hybrid 612) grown under different photoperiodic regimes were measured in purified extracts by optical rotary dispersion. When plants were transferred from short to long days, the abscisic acid content increased 2- to 3-fold. This rise in the level of abscisic acid took place during the 1st long da...