Abstract
An organ-specific-growth inhibitory substance was isolated from an aqueous methanol extract of red pine needles and determined by spectral data as 1-mono(16-hydroxyhexadecanoyl)glycerol. This substance inhibited root growth of cress (Lepidium sativum L.) and barnyard grass (Echinochloa crus-galli (L.) Beauv) seedlings at concentrations greater than 0.01 and 0.03 μM, respectively. The concentrations required for 50 % growth inhibition on roots of cress and barnyard grass were 0.16 and 3.4 μM, respectively. However, the inhibitory activity of the substance on shoots of cress and barnyard grass was very weak. The endogenous concentration of 1-mono(16-hydroxyhexadecanoyl)glycerol in the pine needles was 4.6 μmol kg -1. Two related compounds, 1-monohexadecanoylglycerol and 16-hydroxyhexadecanlic acid had no activity up to 1,000 μM on cress roots and shoots. The effectiveness of 1-mono(16-hydroxyhexadecanoyl)glycerol on root growth inhibition and the occurrence of 1-mono(16-hydroxyhexadecanoyl)glycerol in pine needles suggest the substance may play an important role in the allelopathy of red pine. Root-specific-growth-inhibition by the substance may be one of the strategies for red pine to compete with neighboring plants for nutrients and space because root growth of competitive plants may be very important for their whole plant development.
| Original language | English |
|---|---|
| Pages (from-to) | 171-175 |
| Number of pages | 5 |
| Journal | Plant Growth Regulation |
| Volume | 68 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2012 Nov |
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Keywords
- Allelopathy
- Growth inhibitor
- Phytoalexin
- Pinaceae
- Pine forest
ASJC Scopus subject areas
- Plant Science
- Agronomy and Crop Science
- Physiology
Cite this
Organ-specific-active allelopathic substance in red pine needles. / Kato-Noguchi, Hisashi; Fushimi, Yoshiko; Kimura, Fukiko; Morita, Maho; Suenaga, Kiyotake.
In: Plant Growth Regulation, Vol. 68, No. 2, 11.2012, p. 171-175.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Organ-specific-active allelopathic substance in red pine needles
AU - Kato-Noguchi, Hisashi
AU - Fushimi, Yoshiko
AU - Kimura, Fukiko
AU - Morita, Maho
AU - Suenaga, Kiyotake
PY - 2012/11
Y1 - 2012/11
N2 - An organ-specific-growth inhibitory substance was isolated from an aqueous methanol extract of red pine needles and determined by spectral data as 1-mono(16-hydroxyhexadecanoyl)glycerol. This substance inhibited root growth of cress (Lepidium sativum L.) and barnyard grass (Echinochloa crus-galli (L.) Beauv) seedlings at concentrations greater than 0.01 and 0.03 μM, respectively. The concentrations required for 50 % growth inhibition on roots of cress and barnyard grass were 0.16 and 3.4 μM, respectively. However, the inhibitory activity of the substance on shoots of cress and barnyard grass was very weak. The endogenous concentration of 1-mono(16-hydroxyhexadecanoyl)glycerol in the pine needles was 4.6 μmol kg -1. Two related compounds, 1-monohexadecanoylglycerol and 16-hydroxyhexadecanlic acid had no activity up to 1,000 μM on cress roots and shoots. The effectiveness of 1-mono(16-hydroxyhexadecanoyl)glycerol on root growth inhibition and the occurrence of 1-mono(16-hydroxyhexadecanoyl)glycerol in pine needles suggest the substance may play an important role in the allelopathy of red pine. Root-specific-growth-inhibition by the substance may be one of the strategies for red pine to compete with neighboring plants for nutrients and space because root growth of competitive plants may be very important for their whole plant development.
AB - An organ-specific-growth inhibitory substance was isolated from an aqueous methanol extract of red pine needles and determined by spectral data as 1-mono(16-hydroxyhexadecanoyl)glycerol. This substance inhibited root growth of cress (Lepidium sativum L.) and barnyard grass (Echinochloa crus-galli (L.) Beauv) seedlings at concentrations greater than 0.01 and 0.03 μM, respectively. The concentrations required for 50 % growth inhibition on roots of cress and barnyard grass were 0.16 and 3.4 μM, respectively. However, the inhibitory activity of the substance on shoots of cress and barnyard grass was very weak. The endogenous concentration of 1-mono(16-hydroxyhexadecanoyl)glycerol in the pine needles was 4.6 μmol kg -1. Two related compounds, 1-monohexadecanoylglycerol and 16-hydroxyhexadecanlic acid had no activity up to 1,000 μM on cress roots and shoots. The effectiveness of 1-mono(16-hydroxyhexadecanoyl)glycerol on root growth inhibition and the occurrence of 1-mono(16-hydroxyhexadecanoyl)glycerol in pine needles suggest the substance may play an important role in the allelopathy of red pine. Root-specific-growth-inhibition by the substance may be one of the strategies for red pine to compete with neighboring plants for nutrients and space because root growth of competitive plants may be very important for their whole plant development.
KW - Allelopathy
KW - Growth inhibitor
KW - Phytoalexin
KW - Pinaceae
KW - Pine forest
UR - http://www.scopus.com/inward/record.url?scp=84867684018&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867684018&partnerID=8YFLogxK
U2 - 10.1007/s10725-012-9703-5
DO - 10.1007/s10725-012-9703-5
M3 - Article
AN - SCOPUS:84867684018
VL - 68
SP - 171
EP - 175
JO - Plant Growth Regulation
JF - Plant Growth Regulation
SN - 0167-6903
IS - 2
ER -