Petal senescence is reviewed, with the main emphasis on gene expression in relation to
physiological functions. Autophagy seems to be the major mechanism for large-scale …

Leaf senescence is a type of postmitotic senescence. The onset and progression of leaf
senescence are controlled by an array of external and internal factors including age, levels …

Sugars are important signals in the regulation of plant metabolism and development. During
stress and in senescing leaves, sugars often accumulate. In addition, both sugar …

There has been some debate whether leaf senescence is induced by sugar starvation or by
sugar accumulation. External supply of sugars has been shown to induce symptoms of …

Gluconeogenesis is a key interface between organic acid/amino acid/lipid and sugar
metabolism. The aims of this article are four-fold. First, to provide a concise overview of plant …

The protein content of seeds determines their nutritive value, downstream processing
properties and market value. Up to 95% of seed protein is derived from amino acids that are …

This review considers aspects of the structure and functions of the parenchymatous bundle
sheath that surrounds the veins in the leaves of many C3 plants. It includes a discussion of …

Cucurbitaceous plants (cucurbits) have long been preferred models for studying phloem
physiology. However, these species are unusual in that they possess two different phloem …

Phosphoenolpyruvate carboxykinase (PCK) is probably ubiquitous in flowering plants, but is
confined to certain cells or tissues. It is regulated by phosphorylation, which renders it less …

Background Isocitrate lyase (ICL) is a key enzyme in the glyoxylate cycle. In a previous study
in rice, the expression of the ICL-encoding gene (OsICL) was highly induced by salt stress …