linkedin post 2016-12-03 06:33:43

Uncategorized
SINKS TRUMP SOURCES. "A semelparous plant dies because its sink tissues kill its source organs by a kind of starvation, by induction of senescence in response to nutrient diversion or by export of a ‘death hormone'." (Semelparous organisms have only one reproductive episode before death). https://lnkd.in/dPac2Jv View in LinkedIn
Read More

linkedin post 2016-12-01 07:07:41

Uncategorized
CODE BIRTH. "Stereochemical match is aided by codonic or anticodonic triplets in the corresponding binding sites although an open question is the accuracy when all amino acids and aptamers are present in the same milieu. Should this mechanism turn out to be robust, it offers a convenient road toward initial establishment of the code." http://www.pnas.org/content/112/33/10104.full View in LinkedIn
Read More

linkedin post 2016-12-03 06:29:09

Uncategorized
SOURCES. "Organs that supply the precursors for sink metabolism are sources. Sources and sinks communicate through the vascular system. During development of the endosperm of cereal grains and the parenchyma of potato tubers, large amounts of starch are accumulated. These organs are supplied via the phloem with assimilated C mostly fixed by current photosynthesis." https://lnkd.in/dPac2Jv View in LinkedIn
Read More

linkedin post 2016-12-03 06:25:37

Uncategorized
SINKS. "A sink is defined as a net importer of nutrients (nitrogen (N), phosphorus (P), potassium (K), sulfur (S) and other minerals) and assimilates carbon (C) derived directly or indirectly from photosynthesis. Developing seeds, bulbs, tubers and other structures that accumulate storage compounds are strong sinks, as are expanding leaves and branches during vigorous vegetative growth." https://lnkd.in/dPac2Jv View in LinkedIn
Read More

linkedin post 2016-12-03 06:21:10

Uncategorized
FOREST TURNOVER. "Molecules, cells, phytomers, individuals and even whole floras typically turn over. Turnover is defined as flux through a pool. In the case of leaf turnover, the pool is the canopy. Newly initiated leaves are recruited to the canopy, grow and mature, become senescent and ultimately die and leave the pool." https://lnkd.in/dPac2Jv View in LinkedIn
Read More

linkedin post 2016-12-04 06:42:04

Uncategorized
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
Read More