Year: 2022

FRATRICIDE. "Developing sinks export a factor that triggers senescence in target leaves." Sink leaves suck out the very last of the leaf nutrients from source leaves before the source leaves are allowed to be recycled in leaf litter. https://lnkd.in/dPac2Jv View in LinkedIn

LIFE ECONOMICS. "Senescence in semelparous organisms is often considered to be the cost of sex, reflecting the trade-off between survival and reproductive investment." https://lnkd.in/dPac2Jv View in LinkedIn

TWO GREAT AND DIFFERENT GROUPS. "Animals, being heterotrophic, have to reconcile the energy demands of repair and maintenance activities with those of growth and reproduction. Some theories consider age-related physiological deterioration and mortality to be a reflection of a progressive imbalance in this relationship. It is questionable, however, whether such an explanation can apply to autotrophic organisms such as green plants." https://lnkd.in/dPac2Jv View in LinkedIn

GERMLINE AND SOMA. "Senescence and ageing in plants diverge radically from the equivalent processes in animals because of differences in organization and development. In particular, the animal body comprises distinct germline (gamete-producing) and soma (nonreproductive) cells, whereas there is no differentiation into germline and soma in plants." https://lnkd.in/dPac2Jv View in LinkedIn

MODULAR BODY PLAN. "Also of special significance for ageing is the body plan. Unlike animals, plants develop by the open-ended repetitive proliferation of homologous structural units. The vast range of plant form and life cycle arises by variations in the spatial arrangement of phytomers, or in the timing of initiation, development and senescence of these modules." https://lnkd.in/dPac2Jv View in LinkedIn

UNIFIED SIBLING RIVALRY. "Individual plants behave as competing populations of genetically equivalent organs integrated through source–sink interactions, a mode of organization that ensures adaptation to heterogeneous environments." https://lnkd.in/dPac2Jv View in LinkedIn

DUBIOUS. "Because a single plant is structured as a population of phytomers, it appears to be more like a colonial organism, such as a coral, rather than an individual. Closer examination reveals this resemblance to be perhaps superficial at best." https://lnkd.in/dPac2Jv View in LinkedIn

"LEAF SENESCENCE, involving photosynthesis cessation, degradation of macromolecules, and increase of reactive oxygen species (ROS), as well as contributing to the mobilization of nutrients from old leaves to growing or storage tissues, is regulated by various external and internal factors." https://lnkd.in/dj6JXRP View in LinkedIn

DATA CONSIDERED. "Leaf senescence initiation is affected by many such factors, such as the age of the plant, plant hormones, ROS, transcription factors, protein kinases, nutrient limitation, and drought." https://lnkd.in/dj6JXRP View in LinkedIn

CALCULATED VARIABLES. "Leaf senescence is basically governed by the developmental age. However, it is also influenced by various internal and environmental signals that are integrated into the age information." https://lnkd.in/dj6JXRP View in LinkedIn