Engelberth Jurgen, Engelberth Marie
Department of Integrative Biology, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA.
Plants (Basel). 2022 Feb 15;11(4):526. doi: 10.3390/plants11040526.
Green leaf volatiles (GLV) are essentially produced by the green parts of plants upon damage. GLV are mainly 6-carbon molecules derived from fatty acids through the hydroperoxide lyase pathway and can serve as airborne signals to other parts of the same plant and to neighboring plants and help to protect them against biotic and abiotic stresses. However, while the biosynthesis is generally well understood, little is known about how plants regulate the production of these important signaling molecules. To better understand how the developmental stage of the plant affects aldehyde GLV production, we selected and to represent mono- and dicot plants for this analysis. We show that the capacity to produce aldehyde GLV strongly depends on the developmental stage of the plant. Major differences in the quantity, and in the quality of these compounds were found, not only in leaves from different developmental stages, but also in different areas within a leaf. The results demonstrate that the capacity to produce GLV varies significantly within a plant and the potential implications of these findings are discussed.
绿叶挥发物（GLV）本质上是植物绿色部分在受到损伤时产生的。GLV主要是通过氢过氧化物裂解酶途径从脂肪酸衍生而来的6碳分子，可作为空气传播信号传递给同一植物的其他部分以及相邻植物，并帮助它们抵御生物和非生物胁迫。然而，虽然其生物合成过程总体上已被充分了解，但关于植物如何调节这些重要信号分子的产生却知之甚少。为了更好地理解植物的发育阶段如何影响醛类GLV的产生，我们选择了 和 来代表单子叶植物和双子叶植物进行此项分析。我们发现，产生醛类GLV的能力在很大程度上取决于植物的发育阶段。不仅在不同发育阶段的叶片中，而且在叶片内的不同区域，都发现了这些化合物在数量和质量上的主要差异。结果表明，植物体内产生GLV的能力差异显著，并对这些发现的潜在影响进行了讨论。
