Facultade de Bioloxía, Departamento de Bioloxía Vexetal e Ciencia do Solo, Universidade de Vigo, Campus As Lagoas, Marcosende, 36310, Vigo, Spain.
J Chem Ecol. 2010 Feb;36(2):205-9. doi: 10.1007/s10886-010-9750-1. Epub 2010 Feb 9.
2-(3H)-benzoxazolinone (BOA) is a secondary plant metabolite previously found to inhibit plant growth and development. The phytotoxic activity of BOA has been extensively demonstrated over the last years. However, the relation of BOA phytotoxicity with BOA accumulation in plant leaves has not been thoroughly investigated. In this work, BOA phytotoxicity on photosynthesis (PhiPSII and Pn) of lettuce (Lactuca sativa L. cv. Great Lakes) was studied, and these results were correlated with BOA quantities in the leaves. BOA-treated plants showed reduced photosynthesis rate 6 h after the beginning of the treatment, and the efficiency of photosystem II started to be affected 10 h after treatment. These results were correlated with an increasing concentration of BOA in leaves that starts 6 h after treatment and shows a maximum at 96 h.
2-(3H)-苯并恶唑酮（BOA）是一种次级植物代谢物，先前被发现能够抑制植物的生长和发育。BOA 的植物毒性在过去几年中得到了广泛的证明。然而，BOA 植物毒性与植物叶片中 BOA 积累的关系尚未得到彻底研究。在这项工作中，研究了 BOA 对生菜（Lactuca sativa L. cv. Great Lakes）光合作用（PhiPSII 和 Pn）的毒性，并且将这些结果与叶片中的 BOA 含量相关联。在处理开始后 6 小时，BOA 处理的植物表现出光合作用率降低，并且在处理 10 小时后，光系统 II 的效率开始受到影响。这些结果与叶片中 BOA 浓度的增加相关，该浓度从处理后 6 小时开始增加，并在 96 小时达到最大值。
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