Wheat leaf

Wheat leaf Wheat protein Wheat stem rust Wheatstone bridgf Wheel-balancing weight ... 

LPC Product Quality. Table 10 gives approximate analyses of several LPC products. Amino acid analyses of LPC products have been pubhshed including those from alfalfa, wheat leaf, barley, and lupin (101) soybean, sugar beet, and tobacco (102) Pro-Xan LPC products (100,103) and for a variety of other crop plants (104,105). The composition of LPCs varies widely depending on the raw materials and processes used. Amino acid profiles are generally satisfactory except for low sulfur amino acid contents, ie, cystine and methionine. 

Malone M, Leigh RA, Tomos AD. Concentrations of vacuolar inorganic ions in individual cells of intact wheat leaf epidermis. J Exper Bot 1991 42 305-309. 

The amount of chitin tetramer required to elicit the response, when administered as a single dose, was relatively high. One explanation for this phenomenon was that chitin oligomers are unstable in wheat leaf tissue, and that administration as a single dose did not properly mimic the low, but continual, levels that would be released from the polymer. This was supported by the observation that the tetramer, when administered... 

Control of mildew, potato and tomato late and early blights, wheat leaf and glume blotch and barley net blotch in grape, potato, tomoto, wheat, barley... 

Plants. Only slightly metabolized in wheat, with low residues found in the crop. Extensively photodegraded on the wheat leaf surface, giving multiple polar degradation products. On grapes and cucumbers, the main residue was unchanged quinoxyfen... 

At the DNA level, the isolated genes are dissimilar. For example, in wheat leaf and wheat endosperm, there is only 55.7% identity (Olive et al., 1989) and, on the basis of Southern blot hybridization analyses and restriction enzyme mapping, it is concluded that there are at least two distinct gene families in wheat. For spinach leaf and rice endosperm, there is only approximately a 50% identity (B. S. White and J. Preiss, unpublished results, 1998). 

Olive, M. R., Ellis, R. J., and Schuch, W. W. 1989. Isolation and nucleotide sequence of cDNA clones encoding ADPglucose pyrophosphorylase polypeptides from wheat leaf and endosperm. Plant Mol. Biol. 12, 525-538. 

Figure 3. Leaf vasculature anatomy. Tracings from light micrographs of (A) soybean leaf cross section showing PVM (arrows) (B) paradermal section of soybean leaf showing interconnecting PVM (shaded cells) and (C) cross section of a wheat leaf showing mestome sheath cells surrounding vascular tissue. Tracings provided by Shiela McKelvey.

These compoimds have been tested in vivo against wheat leaf rust, Puc-cinia recondite, at a fixed dose of 0.001 M. The following equation represents the best QSAR model for the antifungal activity (D = log[a/(100 - a)] - log Mw where, a is the percentage inhibition and Mw is the molecular weight of the tested compound) of these compoimds. 

Rice lamina inclination test Radish seedling elongation Tomato hypocotyl elongation Wheat leaf-unrolling Pea inhibition ... 

Brassinosteroids (BSs) represent a new group of plant hormones that possess a broad spectrum of physiological activities (1,2). A most Intriguing property of BSs Is their capacity to Increase stress resistance In plants, but the mechanism of such an antistress activity still remains unknown (1). As cell stress resistance Is usually associated with stress protein synthesis (3 4) our aim was to study the BS effect on protein synthesis and ultrastructure of wheat leaf cells at normal temperature and under heat shock conditions. We have also studied the Influence of BSs on mesophyll cell ultrastructure under saline stress. 

Polypeptides synthesized at control temperature (23°C) or under heat shock conditions (2.5 h, 40°) in wheat leaf segments. .treated with HBR (10 M,10 M) or BB... 

EB exerted similar effects on protein synthesis in wheat leaves as HBR (Figure 5). EB was less active in the stimulation of polypeptide synthesis in wheat leaf segments at 23°C than HBR and the number of lsoforms induced (or activated) by EB was fewer (data are not presented). Nevertheless EB was as efficient as HBR in the alteration of protein set synthesized in leaves at 42°C (Figure 5 B). 

The compound RH-124 (triazbutil, 66), 4- -butyl-1,2,4-triazole is a systemic fungicide for the control of wheat leaf rust, which is caused by Puccinia recondita tritici (Meyer et al., 1970). In foliar, seed and soil applications this active material was superior to benomyl, triarimol or oxycarboxin against leaf rust, though the duration of effectiveness inside the wheat plant was relatively short (Rowell, 1976). 

The use of Sephadex columns equilibrated with sodium chloride to purify winter wheat leaf jS-D-fructofuranosidase has been described. 

---