Sucrose (Suc) accumulation is one of the key indicators of leaf senescence onset, but little is
known about its regulatory role. Here, we found that application of high (120–150 mM) and …

Sugar is involved in initiating leaf senescence. However, its regulatory role, especially as a
signal in the senescence process, is unclear. Therefore, this study was designed to illustrate …

Senescence in plants is an active and acquired developmental process that occurs at the
last developmental stage during the life cycle of a plant. Leaf senescence is a relatively slow …

Sugars are the primary products of photosynthesis and play multiple roles in plants.
Although sugars are usually considered to be the building blocks of energy storage and …

Although leaf senescence results in a loss of photosynthetic carbon fixation, the senescence-
dependent release of nutrients, especially of nitrogen, is important for the growth of young …

Plants have evolved the adaptive capacity to mitigate the negative effect of external
adversities at chemical, molecular, cellular, and physiological levels. This capacity is …

Abstract Arabidopsis hexokinase (AtHXK1), an enzyme that catalyses hexose
phosphorylation, accelerates leaf senescence, whereas the plant hormone cytokinin inhibits …

Source–sink communication is one of the key regulators of senescence; however, the
mechanisms underlying such regulation are largely unknown. We analysed senescence …

Plant growth and development depend on the availability of carbohydrates synthesised in
photosynthesis (source activity) and utilisation of these carbohydrates for growth (sink …

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 …