The POD, glutathione reductase (GR) activity and glutathione (GSH) level remained stable at 20 µL L ⁻¹ α -pinene. The high-activity of peroxidase (POD), APX along with the high level of GSH contributed to the cellular redox equilibrium at 15 µL L ⁻¹ α -pinene. APX reduced the membrane lipid peroxidation quickly at 10 µL L ⁻¹ α -pinene. Superoxide dismutase (SOD) and ascorbate peroxidase (APX) increased at 5 µL L ⁻¹ α -pinene to resist stress. The water-soluble proteins, the soluble sugars and proline (Pro) strengthened seedlings immunity at 5 and 10 µL L ⁻¹ α -pinene. The α -pinene-stress had no significant effect on height and fresh weight (FW) of seedlings. nutans exposed to different α -pinene concentrations. Here, we investigated the physiological, biochemical and phytohormone changes of E. However, the response changes of α -pinene-induced allelopathy to E. The α -pinene is the main allelochemical of many weeds that inhibit the growth of Elymus nutans, an important forage and ecological restoration herbage. glyptostroboides is allelopathic, and (+)-rhododendrol and 9-epi-blumenol C may be contribute to the allelopathy. glyptostrob through the growth inhibition of competing plant species nearby. Therefore, those allelopathic substances in the fallen leaves may be liberated into the rhizosphere soil during the decomposition process of fallen leaves and provide a competitive advantage for M. glyptostroboides is a deciduous perennial tree, and accumulation of its fallen leaves occur on the soil under the trees. The compound inhibited the growth of cress and L. The extract was then purified by several chromatographic steps, and two allelopathic substances were isolated and determined by spectral data to be (+)-rhododendrol and 9-epi-blumenol C.
An aqueous methanol extract of the fallen leaves inhibited the growth of cress (Lepidium sativum L.), lettuce (Lactuca sativa L.), alfalfa (Medicago sativa L.), Lolium multiflorum Lam., Phleum pretense L., and Vulpia myuros (L.) C.C.Gmel. We investigated the allelopathy and allelopathic substances in fallen leaves of M. The species are cultivated in the parks, gardens, and roadsides in many countries.
Cheng is one of the oldest living conifer species, and it has remained unchanged for millions of years compared to its fossils from the Cretaceous period.
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