Abstract
Indole-3-acetic acid (IAA) and a variety of auxin analogs were tested at different concentrations for their capacity to induce short-term acidification and elongation in Zea mays L. coleoptile segments. In both tests, IAA and (+)-2,4-dichlorophenoxypropionic acid ((+)-2,4-DP) at 10-5 M stimulated most strongly, followed by (-)-alanyl-IAA ((-)-ALA), 1-naphthaleneacetic acid (1-NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D). 2-Naphthoxy-acetic acid (2-NOA) and 2-naphthaleneacetic acid (2-NAA) weakly stimulated both H+ secretion and elongation at 10-5 M, but inhibited at 10-6 M. For most of the substances tested, including those which were ineffective or inhibitory, there was a good correlation between the measured effects upon medium acidification and elongation.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 35-41 |
| Number of pages | 7 |
| Journal | Plant Science Letters |
| Volume | 34 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 1984 |
| Externally published | Yes |
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Keywords
- Acid secretion
- Auxin specificity
- Cell elongation
- Coleoptile
- Zea
Cite this
A comparison of the auxin specificity of medium acidification and elongation in maize coleoptiles. / Jacobs, Mark; Lomax, T.; Hertel, R.
In: Plant Science Letters, Vol. 34, No. 1-2, 1984, p. 35-41.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A comparison of the auxin specificity of medium acidification and elongation in maize coleoptiles
AU - Jacobs, Mark
AU - Lomax, T.
AU - Hertel, R.
PY - 1984
Y1 - 1984
N2 - Indole-3-acetic acid (IAA) and a variety of auxin analogs were tested at different concentrations for their capacity to induce short-term acidification and elongation in Zea mays L. coleoptile segments. In both tests, IAA and (+)-2,4-dichlorophenoxypropionic acid ((+)-2,4-DP) at 10-5 M stimulated most strongly, followed by (-)-alanyl-IAA ((-)-ALA), 1-naphthaleneacetic acid (1-NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D). 2-Naphthoxy-acetic acid (2-NOA) and 2-naphthaleneacetic acid (2-NAA) weakly stimulated both H+ secretion and elongation at 10-5 M, but inhibited at 10-6 M. For most of the substances tested, including those which were ineffective or inhibitory, there was a good correlation between the measured effects upon medium acidification and elongation.
AB - Indole-3-acetic acid (IAA) and a variety of auxin analogs were tested at different concentrations for their capacity to induce short-term acidification and elongation in Zea mays L. coleoptile segments. In both tests, IAA and (+)-2,4-dichlorophenoxypropionic acid ((+)-2,4-DP) at 10-5 M stimulated most strongly, followed by (-)-alanyl-IAA ((-)-ALA), 1-naphthaleneacetic acid (1-NAA) and 2,4-dichlorophenoxyacetic acid (2,4-D). 2-Naphthoxy-acetic acid (2-NOA) and 2-naphthaleneacetic acid (2-NAA) weakly stimulated both H+ secretion and elongation at 10-5 M, but inhibited at 10-6 M. For most of the substances tested, including those which were ineffective or inhibitory, there was a good correlation between the measured effects upon medium acidification and elongation.
KW - Acid secretion
KW - Auxin specificity
KW - Cell elongation
KW - Coleoptile
KW - Zea
UR - http://www.scopus.com/inward/record.url?scp=0002448126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0002448126&partnerID=8YFLogxK
U2 - 10.1016/0304-4211(84)90124-X
DO - 10.1016/0304-4211(84)90124-X
M3 - Article
AN - SCOPUS:0002448126
VL - 34
SP - 35
EP - 41
JO - Plant Science
JF - Plant Science
SN - 0168-9452
IS - 1-2
ER -