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Main conclusionThis study confirmed pigment profiles in different colour groups, isolated key anthocyanin biosynthetic genes and established a basis to examine the regulation of colour patterning in flowers ofCymbidiumorchid.Cymbidium orchid (Cymbidium hybrida) has a range of flower colours, often classified into four colour groups; pink, white, yellow and green. In this study, the biochemical...
NADPH oxidase activity is involved in plant adaptation and development. The reactive oxygen species sourced by NADPH oxidase activity may contribute to wall strength and protoplast volume adjustment. Root hair bulge apices of the NADPH oxidase mutant rhd2/Atrbohc were more robust than the kjk cellulose synthase mutant, but burst more readily than the wild type (WT). Root epidermal wall appeared impaired...
Examination of angiosperm primary cell walls by transmission electron microscopy shows that they contain microfibrils that probably consist of cellulose microfibrils surrounded by associated non-cellulosic polysaccharides. Previous studies using solid-state 13C NMR spectroscopy have shown that the cellulose is all crystalline with crystallites of cross-sectional dimensions of 23nm. However, it is...
Abstract. Lysed guard-cell protoplasts of Vicia faba L. exhibited hydrolytic activity characteristic of tonoplast inorganic pyrophosphatase (V-PPase; EC 3.6.1.1). Activity was inhibited by the specific V-PPase inhibitor aminomethylenediphosphonate, stimulated by K+ (Km= 51 mM) and inhibited by Ca2+ (80 nM free Ca2+ was required for 50% inhibition at 0.27 mM free Mg2+). Patch-clamp measurements of...
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