Heinze Johannes, Werger Luise, Ogden Michael, Heinken Thilo, Hoefgen Rainer, Weber Ewald
Institute of Biochemistry and Biology, Biodiversity Research and Systematic Botany, University of Potsdam, Maulbeerallee 1, Potsdam, 14469, Germany.
Heinz Sielmann Foundation, Dyrotzer Ring 4, Wustermark (OT Elstal), 14641, Germany.
Stress Biol. 2023 Oct 9;3(1):43. doi: 10.1007/s44154-023-00123-z.
Wind is an environmental stimulus that stresses plants of all growth forms at all life-stages by influencing the development, architecture, and morphology of roots and shoots. However, comparative studies are scarce and no study directly investigated whether shoot and root morphological traits of trees, grasses and forbs differ in their response to short wind pulses of different wind intensity. In this study, we found that across species, wind stress by short wind pulses of increasing intensity consistently changed root morphology, but did not affect shoot morphological traits, except plant height in four species. Wind effects in roots were generally weak in tree species but consistent across growth forms. Furthermore, plant height of species was correlated with changes in specific root length and average diameter.Our results indicate that short-pulse wind treatments affect root morphology more than shoot morphology across growth forms. They further suggest that wind stress possibly promotes root anchorage in young plants and that these effects might depend on plant height.
风是一种环境刺激因素，它通过影响根和茎的发育、结构及形态，对处于所有生命阶段的各种生长形式的植物造成压力。然而，相关比较研究较少，且没有研究直接调查树木、草本植物和杂类草的地上部分和根系形态特征对不同强度的短时间风脉冲的响应是否存在差异。在本研究中，我们发现，在所有物种中，强度不断增加的短时间风脉冲造成的风应力持续改变根系形态，但除了四个物种的株高外，并未影响地上部分的形态特征。树木物种根系受到的风影响通常较弱，但在所有生长形式中表现一致。此外，物种的株高与比根长和平均直径的变化相关。我们的结果表明，短脉冲风处理对所有生长形式植物根系形态的影响大于对地上部分形态的影响。结果还表明，风应力可能促进幼苗根系的固着，且这些影响可能取决于株高。
