Brassicas

A.ltemaria spp. tobacco brown spot leaf spot of brassicas... 

Naphthalene acetic acid is used to thin apple and pear blossoms and to control apple and pear preharvest drop (10). It also is used to induce flowering in pineapple, but conversely inhibits sprouting in potatoes, sweet potatoes, and turnips (Brassica rapd) (23). It also is used to promote rooting in... 

Arable farmers in the UK rarely grow more than one crop in a year, but horticulturalists may grow two or more crops in a year on the same soil, so the question of crop sequences is more intense for them, particularly as Brassica vegetables, such as cabbages and brussel sprouts, can leave large organic as well as mineral nitrogen residues. 

Sinapine, CjgHjjOgN, was isolated as a thiocyanate from black mustard seeds (Brassica nigra) by Henry and Garot." Will and Laubenheimer first noted that sinapine occurs in white mustard seed in the form of the alkaloidal glucoside sinalbine, CajH jOuNgSg, which, on hydrolysis by the enzyme myrosin, also present in the seed, furnished dextrose, p-hydroxybenzylthiocarbimide and sinapine sulphate. Owing to its instability sinapine is unknown in the free state. The thiocyanate can be recrystallised from water and converted into the acid sulphate by treatment with sulphuric acid. 

Phenyl-ethyl isothiocyanate. CgHj,(C.2H4)N C S, has been found in the oils of reseda root, nasturtium, and some varieties of Brassica. It is an oil of powerful odour, yielding a thiourea, melting at 137°. The latter body, when treated with silver nitrate and baryta water, yields phenyl-ethyl-urea, melting at 111° to 112°. 

The second chemical, identified as 2-phenylethyl isothiocyanate (3) was found in the edible parts of turnips (Brassica campestris var. 

After this, we demonstrated the ability of wheat anionic POs to bind to the chitin of the cell walls of fungal pathogens. We called these POs "chitin-binding POs" (Maksimov et al., 2003). We were the first to demonstrate the binding of the anionic PO of wheat root to chitin (Maksimov et al., 1994). Besides this, we observed that in some species the activity of POs was increased in the unbound Armoracia rustkana, Lagenaria siceraria) or eluted Pisum sativum, Galega orientalis, Brassica oleraceae) fractions of proteins after interaction with chitin. 

Mesembryanthemum crystallinum leaves (S) Brassica napus roots (D)... 

Vartanian, N., Damerval, G. de Vienne, D. (1987). Drought-induced changes in protein patterns of Brassica napus var. oleifera roots. Plant Physiology, 84, 989-92. 

Brassica napus cells have been selected for tolerance to Na2S04 (Chandler Thorpe, 1987). When selected cells were compared with non-selected cells in response to Na2S04 salinity the selected cells grew better and showed less negative cell water potential than the non-selected cells. Both cell lines showed osmotic adjustment and proline accumulation. However, proline accumulation was related to inhibition of growth and did not play a significant role in osmotic adjustment. 

Chandler, S.F. Thorpe, T.A. (1987). Characterization of growth, water relations, and proline accumulation in sodium sulfate tolerant callus of Brassica napus L. cv. Westar (Canola). Plant Physiology, 84, 106-11. 

Gangwar SK, Singh YP. 1988. Persistence of endosulfan residues in/on knol-khol (Brassica calorapa L.) at medium altitude hills. Indian Journal of Plant Protection 16 27-32. 

There is ample evidence from both animal experiments and tissue cultures studies to show that brassica vegetables and their constituents selectively induce Phase II enzymes. Evidence for the induction of Phase II enzymes by... 

GiAMOUSTARis A and MITHEN R (1995) The effect of modifying the glucosinolate content of leaves of oilseed rape (Brassica-napus ssp oleifera) on its interaction with specialist and generalist pests . Annals Appl Bio, 126, 347-63. 

HEANEY R K and FENWICK G R (1995) Natural toxins and protective factors in brassica species, including rapeseed , Nat Toxins, 3, I i i-l. 

Epidemiological studies on brassica vegetables and cancer risk . Cancer Epidemiol Biomarkers, 5, 733-48. 

VERHOEVEN D T, VEREHAGEN H, GOLDBOHM R A, VAN DEN BRANDT P A and VAN POPPELL GA(1997) Review of mechanisms underlying anticarcinogenicity by brassica vegetables , Chem Biol Interact, 103, 79-129. 

Epidemiological data on the protective effects of plant foods provides convincing evidence that a high consumption of brassica vegetables is inversely... 

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