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distance signal
The systematic or long-distance signal transmission plays crucial roles in animal lives.
      
Compared with animals, however, much less is known about the roles of long-distance signal communication in plant lives.
      
The green-contrast signal would be used as a far-distance signal for flower detection.
      
We conclude that wound-induced increases in leaf JA are an important component of this long-distance signal-transduction pathway.
      
Jasmonic acid (JA) is part of a long-distance signal-transduction pathway that effects increases in de-novo nicotine synthesis in the roots of Nicotiana sylvestris Speg et Comes (Solanaceae) after leaf wounding.
      
Therefore, an apoplastic contribution to the long-distance signal transduction mechanism appears most likely.
      
To furthermore investigate the involvement of cis-abscisic acid (ABA) in this long-distance signal transduction pathway, ABA-deficient tomato mutants (Lycopersicon esculentum cv.
      
Jasmonic acid (JA) is strongly implicated in the long-distance signal transduction cascade increasing nicotine synthesis in the roots of plants after leaf wounding.
      
However, it is equally possible that an as yet unknown substance mediates this long-distance signal.
      
Phloem has recently been considered as a system for long-distance signal traffic used by plants to integrate whole-plant physiological processes.
      
Thus cytokinin may represent a long-distance signal for the relief of nitrogen starvation that is able to trigger downstream events in shoot tissues.
      
The above notion leads to the view that long-distance signal is transmitted from leaves to the hypocotyl.
      
 

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