• 1984
  • 1985 Robert McCredie May, When two and two do not make four: nonlinear phenomena in ecology 1984 Samuel Victor Perry, Calcium and the regulation of contractile activity. (wikipedia.org)
  • growth
  • A clinostat is a device which uses rotation to negate the effects of gravitational pull on plant growth (gravitropism) and development (gravimorphism). (wikipedia.org)
  • Criticism and the Growth of Knowledge (1970), 52-3. (todayinsci.com)
  • 1972 Nikolaas Tinbergen, Functional ethology and the human sciences 1971 Henry Harris, Cell fusion and the analysis of malignancy 1970 Hugh Esmor Huxley, The structural basis of muscular contraction 1969 Frederick Campion Steward, From cultured cells to whole plants: the induction and control of their growth and morphogenesis 1968 Max Ferdinand Perutz, The haemoglobin molecule 1967 Andrew Fielding Huxley, The activation of striated muscle and its mechanical response. (wikipedia.org)
  • This phenomenon was termed "autoinduction" because it involved a molecule (autoinducer) that accumulated in a growth medium and induced the synthesis of components of the luminescence system. (wikipedia.org)
  • varieties
  • Indian Science Congress Association, life member Indian Phytopathological Society, life member Indian Virological Society, fellow Deutsche Phytomedizinische Gesellschaft Deutsche Virologische Gesellschaft Scientific papers Dutt, M., Sarkar, S. & Dutta, C.T.: Physiological studies on diploid and polyploid varieties of banana. (wikipedia.org)
  • Two or more taxa once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), but this is not a species complex. (wikipedia.org)
  • leaf
  • There are male (staminate) and female (pistillate) flowers (unisexual flowers) on a single plant (monoecious), and these grow singly, appearing from the leaf axils. (wikipedia.org)
  • Practically, mean height from root to leaf and leaf area can be used to describe l and a of the plant, respectively (West et al. (sinica.edu.tw)
  • organisms
  • Natural philosophy and natural theology encompassed the conceptual and metaphysical basis of plant and animal life, dealing with problems of why organisms exist and behave the way they do, though these subjects also included what is now geology, physics, chemistry, and astronomy. (wikipedia.org)
  • term
  • The term "autoinduction" was first coined in 1970, when it was observed that the bioluminescent marine bacterium Vibrio fischeri produced a luminescent enzyme (luciferase) only when cultures had reached a threshold population density. (wikipedia.org)
  • minimal
  • A plant only reacts to gravity if the gravistimulation is maintained for longer than a critical amount of time, called the minimal presentation time (MPT). (wikipedia.org)
  • allows
  • Quorum sensing is a phenomenon that allows both Gram-negative and Gram-positive bacteria to sense one another and to regulate a wide variety of physiological activities. (wikipedia.org)
  • This phenomenon allows them to act as an antifreeze at concentrations 1/300th to 1/500th of those of other dissolved solutes. (wikipedia.org)
  • species
  • An example of a superspecies is Species aggregate Used for a species complex, especially in plant taxa where polypoidy and apomixis are common. (wikipedia.org)
  • basis
  • whose genetic basis may be mono-, oligo-, or polygenic, and whose physiological basis can be mechanistically modeled at ever deeper levels of detail. (frontiersin.org)
  • systems
  • The optimal rotational speed has been investigated by comparison to 'true' responses to microgravity as seen in space-grown plants, and determined to be between 0.3 and 3 rpm for most plant systems. (wikipedia.org)
  • known
  • These analyses reveal many well-known genetic phenomena like intralocus dominance, interlocus epistasis, and varying degrees of phenotypic correlation. (frontiersin.org)
  • Since the invention of the microscope in the seventeenth century it has been known that plant and animal tissue is composed of cells : the cell was discovered by Robert Hooke. (wikipedia.org)
  • natural
  • It is all too easy for a scientist, believing he has achieved a new way of understanding some natural phenomenon, to promote his idea for some management purpose. (fws.gov)
  • cell wall
  • The plant cell wall was easily visible even with these early microscopes but no similar barrier was visible on animal cells, though it stood to reason that one must exist. (wikipedia.org)
  • turn
  • this may cause an increase in ethylene production, which may in turn cause some of the phenomena otherwise attributed to agravitropism. (wikipedia.org)
  • cells
  • Cellwall-free protoplasts of plant cells (mainly of tobacco and Chinese cabbage) were infected with viruses or with their RNA with a high efficiency and used for physiological investigations. (wikipedia.org)
  • experiences
  • The slow rotation means that the plant experiences a gravitational pull that is averaged over 360 degrees, thus approximating a weightless environment. (wikipedia.org)
  • water
  • The water in plant and animal wastes and dead tissue then evaporates and can be recycled. (thefreedictionary.com)
  • The phenomenon has been studied in some detail in frogs which, although not hibernators in the true sense, can endure very low water temperatures under the conditions of profound hypoxia that exist when they lie dormant for long periods below the surface. (nottingham.ac.uk)
  • several
  • Thus in a year's time it would take millions of plants weighing tons to feed the several steer weighing a few tons that could support one or two people. (thefreedictionary.com)