Acid vacuolar invertase in dormant and germinating seeds of the horse chestnut

Acid vacuolar invertase in dormant and germinating seeds of the horse chestnut A high water content is maintained in the tissues of the axial organs of horse chestnut seeds after the fruit is shed and down to the time the seeds germinate. The plant cell vacuoles, features of whose metabolism can influence the cells’ preparation to initiate growth in germination, are preserved. It was shown that the activity of acid invertase and its capacity to hydrolyze both sucrose and raffinose remain stable throughout the period of dormancy and the transition to germination, as do the molecular weight of its subunits (63 and 65 kDa) and multimer (500 to 550 kDa). The activity of the enzyme increases when the seeds swell under optimal conditions for germination; this is associated with the synthesis of new molecules of the enzyme in long-lived mRNA templates. The storability of the enzyme in the vacuoles of dormant seeds, together with the increase in its activity when seeds coming out of dormancy swell, ensures the rapid hydrolysis of sucrose issuing from the seeds’ cotyledons, thus leading to increased osmotic pressure and, as a result, the beginning of cell elongation, i.e., germination. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Acid vacuolar invertase in dormant and germinating seeds of the horse chestnut

Loading next page...
 
/lp/springer_journal/acid-vacuolar-invertase-in-dormant-and-germinating-seeds-of-the-horse-taInc1Iwnj
Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Animal Anatomy / Morphology / Histology; Developmental Biology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360409060022
Publisher site
See Article on Publisher Site

Abstract

A high water content is maintained in the tissues of the axial organs of horse chestnut seeds after the fruit is shed and down to the time the seeds germinate. The plant cell vacuoles, features of whose metabolism can influence the cells’ preparation to initiate growth in germination, are preserved. It was shown that the activity of acid invertase and its capacity to hydrolyze both sucrose and raffinose remain stable throughout the period of dormancy and the transition to germination, as do the molecular weight of its subunits (63 and 65 kDa) and multimer (500 to 550 kDa). The activity of the enzyme increases when the seeds swell under optimal conditions for germination; this is associated with the synthesis of new molecules of the enzyme in long-lived mRNA templates. The storability of the enzyme in the vacuoles of dormant seeds, together with the increase in its activity when seeds coming out of dormancy swell, ensures the rapid hydrolysis of sucrose issuing from the seeds’ cotyledons, thus leading to increased osmotic pressure and, as a result, the beginning of cell elongation, i.e., germination.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Dec 3, 2009

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