منابع مشابه
Maize leaves turn away from neighbors.
In commercial crops, maize (Zea mays) plants are typically grown at a larger distance between rows (70 cm) than within the same row (16-23 cm). This rectangular arrangement creates a heterogeneous environment in which the plants receive higher red light (R) to far-red light (FR) ratios from the interrow spaces. In field crops, the hybrid Dekalb 696 (DK696) showed an increased proportion of leav...
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A new study describes cellular mechanisms establishing synaptic specificity during development and remodeling of a zebrafish mechanosensory organ. Coordination amongst postsynaptic neurons and interactions between presynaptic and postsynaptic cells together promote the segregation of circuits responding to distinct sensory stimuli.
متن کاملEscape from competition: neighbors reduce Centaurea stoebe performance at home but not away.
The greater abundance of some exotic plants in their nonnative ranges might be explained in part by biogeographic differences in the strength of competition, but these competitive effects have not been experimentally examined in the field. We compared the effects of neighbors on the growth and reproduction of spotted knapweed (Centaurea stoebe) in Europe, where it is native, and in Montana, whe...
متن کاملby Wounding in Maize Leaves
wall carbohydrates, and organic acids. The hydroxycinnamic acid amides with tyramine and octopamine are also common types of conjugates.2) The formation of the amides serves a defensive purpose in solanaceous plants such as potato,3・4) tobacco5) and tomato.6) Various forms of stress, including physical injury, infection with pathogens and elicitor-treatments, induce the accumulation of hydroxyc...
متن کاملA Procedure for Isolation of Proplastids from Etiolated Maize Leaves
Proplastids in etiolated leaves develop into mature chloroplasts when the leaves are exposed to light. The structural changes which occur during this process have been described by von Wettstein and coworkers (6, 16, 17). Their electron micrographs show that the organelles undergo extensive development when they are exposed to light. Further study of these organelles should provide information ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2002
ISSN: 1532-2548,0032-0889
DOI: 10.1104/pp.009738