English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The effects of indoleacetic acid (IAA) on plant growth and development have been intensively studied for more than three decades. Some effects are reflected in changes in cell size, while others (e.g., adventitious roots, calluses, & tumors) involve an overall expansion with cell proliferation (1, 5. 20, 21, 35). Complementary systems have recently been found for studying in intact organisms A: mitotic activity in the absence of over-all growth by expansion (viz., dormant lettuce seeds, 13-15), and B: growth and differentiation without significant deoxyribonucleic acid (DNA) synthesis, mitosis, and cell division (viz., wheat grown from gamma-irradiated grain, 9, 11). Tn this paper we report the effects of IAA on these two systems, with particular reference to interactions of TAA with kinetin on cell division (29), and we suggest how such effects might underlie various actions of auxin as a regulator of normal growth, as a herbicide, and as a causative agent in the production of plant tumors.

Effects of Indoleacetic Acid on Growth Without Mitosis & on Mitotic Activity in Absence of Growth by Expansion