Naturally occurring heterocycles inducing drought resistance in plants |
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| Authors: | K Ienaga M Kurohashi K Nakamura T Nakanishi T Ichii J Konishi |
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| Institution: | (1) Institute of Bio-Active Science, Nippon Zoki Pharmaceutical Co. Ltd., Yoshiro-cho, 673-14 Hyogo, (Japan);(2) Faculty of Agriculture, Kobe University, Rokkodai-cho, Nada-ku, 657 Kobe, (Japan) |
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| Abstract: | Summary During screening of animal metabolites which induce drought resistance in plants, two diketopiperazines, cyclo(L-Hyp-L-Pro) (1) and cyclo(L-Hyp-L-Leu) (2), emerged as effective. When rice seeds were pretreated with the cyclic dipeptides (1 and2) during their germination period, the resulting seedlings showed significant resistance to water-stress caused by 0.5–1.5% NaCl solution or 2.5–5.0% mannitol solution. |
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| Keywords: | Diketopiperazines hydroxyproline drought resistance plant growth regulators |
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