Jurkonienė Sigita, Jankauskienė Jurga, Mockevičiūtė Rima, Gavelienė Virgilija, Jankovska-Bortkevič Elžbieta, Sergiev Iskren, Todorova Dessislava, Anisimovienė Nijolė
Nature Research Centre, Institute of Botany, Akademijos Str. 2, 08412 Vilnius, Lithuania.
Institute of Plant Physiology and Genetics Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bldg. 21, 1113 Sofia, Bulgaria.
Plants (Basel). 2021 May 29;10(6):1091. doi: 10.3390/plants10061091.
This study aimed to investigate the impact of climate warming on hormonal traits of invasive and non-invasive plants at the early developmental stage. Two different lupine species-invasive Lindl. and non-invasive L.-were used in this study. Plants were grown in climate chambers under optimal (25 °C) and simulated climate warming conditions (30 °C). The content of phytohormone indole-3-acetic acid (IAA), ethylene production and the adaptive growth of both species were studied in four-day-old seedlings. A higher content of total IAA, especially of IAA-amides and transportable IAA, as well as higher ethylene emission, was determined to be characteristic for invasive lupine both under optimal and simulated warming conditions. It should be noted that IAA-L-alanine was detected entirely in the invasive plants under both growth temperatures. Further, the ethylene emission values increased significantly in invasive lupine hypocotyls under 30 °C. Invasive plants showed plasticity in their response by reducing growth in a timely manner and adapting to the rise in temperature. Based on the data of the current study, it can be suggested that the invasiveness of both species may be altered under climate warming conditions.
本研究旨在调查气候变暖对入侵植物和非入侵植物早期发育阶段激素特性的影响。本研究使用了两种不同的羽扇豆物种——入侵性的多叶羽扇豆和非入侵性的白羽扇豆。将植物置于气候箱中，分别在最佳条件（25℃）和模拟气候变暖条件（30℃）下培养。对四天大的幼苗研究了植物激素吲哚 - 3 - 乙酸（IAA）的含量、乙烯生成以及这两个物种的适应性生长。结果表明，在最佳条件和模拟变暖条件下，入侵性羽扇豆的总IAA含量较高，尤其是IAA - 酰胺和可运输IAA的含量较高，同时乙烯排放量也较高。需要注意的是，在两种生长温度下，仅在入侵植物中检测到IAA - L - 丙氨酸。此外，在30℃条件下，入侵性羽扇豆下胚轴的乙烯排放值显著增加。入侵植物通过及时减少生长并适应温度升高表现出响应的可塑性。基于本研究的数据，可以推测在气候变暖条件下，这两个物种的入侵性可能会发生改变。
