Evidence for the Active and Passive Chemotropisms in Roots

Evidence for the Active and Passive Chemotropisms in Roots Changes in the elongation of root cells during the negative (away from the salt) or positive (towards the salt) chemotropic bending of roots induced by the unilateral application of agar blocks (1 mm3) with 10–3and 10–2M Cd(NO3)2solutions to the meristem zone of the root were studied. The root bending was not accompanied by differential changes in the number of cells that elongated during the 3-h period of chemical stimulation. The bending was only due to differential changes in the cell elongation rates. In most chemically stimulated roots, both concentrations of Cd(NO3)2solutions inhibited cell elongation at the stimulated and nonstimulated sides. Cell elongation was inhibited by 10–2M Cd(NO3)2mainly on the stimulated side of the roots, hence, the roots bent towards the salt. On the contrary, 10–3M Cd(NO3)2inhibited cell elongation mainly at the nonstimulated side of the roots. As a result, the roots bent away from the salt, i.e., in the direction opposite to that expected in the case of the direct inhibition of cell growth by Cd(NO3)2. It is concluded that the root chemotropisms induced by the above two Cd(NO3)2concentrations are, correspondingly, of a passive or active nature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Evidence for the Active and Passive Chemotropisms in Roots

Loading next page...
 
/lp/springer_journal/evidence-for-the-active-and-passive-chemotropisms-in-roots-XIlxYTmmCU
Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1016782825737
Publisher site
See Article on Publisher Site

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial