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Tragedy of the commons as a result of root competition
Summary 1 We develop and test a game-theoretic model for considering the effects of intra- and interplant competition on root proliferation and reproductive yield. 2 We predict that if space and
Self/non-self discrimination in roots
Root development was significantly greater in split-root plants whose neighbours belonged to different plants and discrimination had a vectorial component whereby plants developed more and longer lateral roots towards neighbouring roots of different plants than towards other roots of the same plant.
Intra-plant versus Inter-plant Root Competition in Beans: avoidance, resource matching or tragedy of the commons
Plants may be able to assess and respond to local opportunities in a manner that maximizes the good of the whole plant, and nutrient foraging as a game may provide a fresh perceptive for viewing root competition either intra- specifically or inter-specifically.
Density-dependent habitat selection in plants
Pea plants exhibit density-dependent habitat selection as they grow. We split the root of a young pea (Pisum sativum L.) so that half grew in one pot and half in an adjacent pot. The rest of the
Root proliferation and seed yield in response to spatial heterogeneity of below-ground competition.
Plants appear to display sophisticated nutrient foraging with outcomes that permit insights into interplant competition, and will tailor its root proliferation to local patch conditions, restraining root production when alone and over-proliferating in the presence of other plants.
The Role of Polar Movement of IAA in the Development of the Peg in Cucumis sativus L.
The developmental anatomy of the "peg" in Cucumis seedlings and the lateral distribution of IAA as a function of gravity explains how endogenous IAA can be limiting for radial extension on the upper side of horizontally growing seedlings.
Plastic bet-hedging in an amphicarpic annual: an integrated strategy under variable conditions
Evidence is found for an adaptive integrated strategy, with bet-hedging “fine-tuned” by phenotypic plasticity as a function of environmental conditions in E. spinosa, a semi-arid, amphicarpic annual, inhabiting habitats with different levels of environmental variation.
Development correlations between roots in heterogeneous environments
The results mean that root development, and especially lateral root initiation, depends on the integrated effects of the local environment and the internal correlative relations between the roots.
Evaluating the viability of Acacia populations in the Negev Desert : a remote sensing approach
In spite of the general trend of increase in tree density, many grid cells were characterized by a decline in density, indicating that demographic data obtained from relatively small research plots may lead to misleading conclusions concerning the viability of plant populations.
CO2 uptake and fluorescence responses for a shade-tolerant cactus Hylocereus undatus under current and doubled CO2 concentrations
Hylocereus undatus (Haworth) Britton and Rose growing in controlled environment chambers at 370 and 740 μmol CO 2 mol −1 air showed a Crassulacean acid metabolism (CAM) pattern of CO 2 uptake, with